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Java Solution for LeetCode algorithm problems, continually updating.

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MIT license

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README.md		README.md
SECURITY.md		SECURITY.md
build.gradle		build.gradle
checkstyle.xml		checkstyle.xml
codecov.yml		codecov.yml
gradle.properties		gradle.properties
gradlew		gradlew
gradlew.bat		gradlew.bat
pom-central.xml		pom-central.xml
pom-central11.xml		pom-central11.xml
pom-central17.xml		pom-central17.xml
pom.xml		pom.xml
settings.gradle		settings.gradle

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LeetCode-in-Java

Java Solution for LeetCode algorithm problems, continually updating.

Installation

Include the following in yourpom.xml for Maven:

<dependencies>  <dependency>    <groupId>com.github.javadev</groupId>    <artifactId>leetcode-in-java</artifactId>    <version>1.10</version>  </dependency>  ...</dependencies>

Gradle:

implementation'com.github.javadev:leetcode-in-java:1.10'

"For coding interview preparation, LeetCode is one of the best online resource providing a rich library of more than 300 real coding interview questions for you to practice from using one of the 7 supported languages - C, C++, Java, Python, C#, JavaScript, Ruby."

Algorithms

#	Title	Solutions	Difficulty	Tag	Time, ms	Time, %
2151	Maximum Good People Based on Statements	Java	Hard	Array, Bit_Manipulation, Backtracking, Enumeration	76	47.57
2100	Find Good Days to Rob the Bank	Java	Medium	Array, Dynamic_Programming, Prefix_Sum	13	46.46
2099	Find Subsequence of Length K With the Largest Sum	Java	Easy	Array, Hash_Table, Sorting, Heap_Priority_Queue	6	85.46
2097	Valid Arrangement of Pairs	Java	Hard	Depth_First_Search, Graph, Eulerian_Circuit	158	100.00
2096	Step-By-Step Directions From a Binary Tree Node to Another	Java	Medium	String, Depth_First_Search, Tree, Binary_Tree	30	76.29
2095	Delete the Middle Node of a Linked List	Java	Medium	Two_Pointers, Linked_List	4	95.21
2094	Finding 3-Digit Even Numbers	Java	Easy	Array, Hash_Table, Sorting, Enumeration	2	99.62
2092	Find All People With Secret	Java	Hard	Depth_First_Search, Sorting, Breadth_First_Search, Graph, Union_Find	95	84.86
2091	Removing Minimum and Maximum From Array	Java	Medium	Array, Greedy	2	100.00
2090	K Radius Subarray Averages	Java	Medium	Array, Sliding_Window	12	83.19
2089	Find Target Indices After Sorting Array	Java	Easy	Array, Sorting, Binary_Search	1	97.90
2088	Count Fertile Pyramids in a Land	Java	Hard	Array, Dynamic_Programming, Matrix	12	83.56
2087	Minimum Cost Homecoming of a Robot in a Grid	Java	Medium	Array, Greedy, Matrix	2	79.89
2086	Minimum Number of Buckets Required to Collect Rainwater from Houses	Java	Medium	String, Dynamic_Programming, Greedy	8	73.71
2085	Count Common Words With One Occurrence	Java	Easy	Array, String, Hash_Table, Counting	6	77.66
2080	Range Frequency Queries	Java	Medium	Array, Hash_Table, Binary_Search, Design, Segment_Tree	140	97.86
2079	Watering Plants	Java	Medium	Array	0	100
2073	Time Needed to Buy Tickets	Java	Easy	Array, Simulation, Queue	0	100.00
2058	Find the Minimum and Maximum Number of Nodes Between Critical Points	Java	Medium	Linked_List	4	100.00
2057	Smallest Index With Equal Value	Java	Easy	Array	1	94.39
2055	Plates Between Candles	Java	Medium	Array, String, Binary_Search, Prefix_Sum	10	92.49
2054	Two Best Non-Overlapping Events	Java	Medium	Array, Dynamic_Programming, Sorting, Binary_Search, Heap_Priority_Queue	58	70.59
2053	Kth Distinct String in an Array	Java	Easy	Array, String, Hash_Table, Counting	7	65.75
2050	Parallel Courses III	Java	Hard	Dynamic_Programming, Graph, Topological_Sort	33	86.04
2049	Count Nodes With the Highest Score	Java	Medium	Array, Depth_First_Search, Tree, Binary_Tree	40	93.75
2048	Next Greater Numerically Balanced Number	Java	Medium	Math, Backtracking, Enumeration	2	95.19
2047	Number of Valid Words in a Sentence	Java	Easy	String	19	42.57
2045	Second Minimum Time to Reach Destination	Java	Hard	Breadth_First_Search, Graph, Shortest_Path	65	74.03
2044	Count Number of Maximum Bitwise-OR Subsets	Java	Medium	Array, Bit_Manipulation, Backtracking	12	58.97
2043	Simple Bank System	Java	Medium	Array, Hash_Table, Design, Simulation	128	72.30
2042	Check if Numbers Are Ascending in a Sentence	Java	Easy	String	2	75.46
2040	Kth Smallest Product of Two Sorted Arrays	Java	Hard	Array, Binary_Search	635	75.24
2038	Remove Colored Pieces if Both Neighbors are the Same Color	Java	Medium	String, Math, Greedy, Game_Theory	22	47.78
2037	Minimum Number of Moves to Seat Everyone	Java	Easy	Array, Sorting	5	22.01
2035	Partition Array Into Two Arrays to Minimize Sum Difference	Java	Hard	Array, Dynamic_Programming, Binary_Search, Two_Pointers, Bit_Manipulation, Ordered_Set, Bitmask	1336	39.36
2034	Stock Price Fluctuation	Java	Medium	Hash_Table, Design, Heap_Priority_Queue, Ordered_Set, Data_Stream	163	65.51
2033	Minimum Operations to Make a Uni-Value Grid	Java	Medium	Array, Math, Sorting, Matrix	41	87.53
2032	Two Out of Three	Java	Easy	Array, Hash_Table	9	45.56
2030	Smallest K-Length Subsequence With Occurrences of a Letter	Java	Hard	String, Greedy, Stack, Monotonic_Stack	131	64.46
2029	Stone Game IX	Java	Medium	Array, Math, Greedy, Counting, Game_Theory	31	10.87
2028	Find Missing Observations	Java	Medium	Array, Math, Simulation	10	31.40
2027	Minimum Moves to Convert String	Java	Easy	String, Greedy	0	100.00
2025	Maximum Number of Ways to Partition an Array	Java	Hard	Array, Hash_Table, Prefix_Sum, Counting, Enumeration	172	100.00
2024	Maximize the Confusion of an Exam	Java	Medium	String, Binary_Search, Prefix_Sum, Sliding_Window	21	44.78
2023	Number of Pairs of Strings With Concatenation Equal to Target	Java	Medium	Array, String	36	36.00
2022	Convert 1D Array Into 2D Array	Java	Easy	Array, Matrix, Simulation	8	40.41
2019	The Score of Students Solving Math Expression	Java	Hard	Array, String, Dynamic_Programming, Math, Stack, Memoization	435	89.93
2018	Check if Word Can Be Placed In Crossword	Java	Medium	Array, Matrix, Enumeration	11	52.76
2017	Grid Game	Java	Medium	Array, Matrix, Prefix_Sum	10	41.46
2016	Maximum Difference Between Increasing Elements	Java	Easy	Array	0	100.00
2014	Longest Subsequence Repeated k Times	Java	Hard	String, Greedy, Backtracking, Counting, Enumeration	169	98.59
2013	Detect Squares	Java	Medium	Array, Hash_Table, Design, Counting	67	88.46
2012	Sum of Beauty in the Array	Java	Medium	Array	10	44.69
2011	Final Value of Variable After Performing Operations	Java	Easy	Array, String, Simulation	1	94.40
2009	Minimum Number of Operations to Make Array Continuous	Java	Hard	Array, Binary_Search	57	72.43
2008	Maximum Earnings From Taxi	Java	Medium	Array, Dynamic_Programming, Sorting, Binary_Search	116	55.59
2007	Find Original Array From Doubled Array	Java	Medium	Array, Hash_Table, Sorting, Greedy	41	96.48
2006	Count Number of Pairs With Absolute Difference K	Java	Easy	Array, Hash_Table, Counting	8	58.60
2003	Smallest Missing Genetic Value in Each Subtree	Java	Hard	Dynamic_Programming, Depth_First_Search, Tree, Union_Find	126	85.18
2002	Maximum Product of the Length of Two Palindromic Subsequences	Java	Medium	String, Dynamic_Programming, Bit_Manipulation, Backtracking, Bitmask	69	89.94
2001	Number of Pairs of Interchangeable Rectangles	Java	Medium	Array, Hash_Table, Math, Counting, Number_Theory	34	99.02
2000	Reverse Prefix of Word	Java	Easy	String, Two_Pointers	0	100.00
1998	GCD Sort of an Array	Java	Hard	Array, Math, Sorting, Union_Find	51	100.00
1997	First Day Where You Have Been in All the Rooms	Java	Medium	Array, Dynamic_Programming	14	83.10
1996	The Number of Weak Characters in the Game	Java	Medium	Array, Sorting, Greedy, Stack, Monotonic_Stack	121	81.46
1995	Count Special Quadruplets	Java	Easy	Array, Enumeration	2	99.20
1994	The Number of Good Subsets	Java	Hard	Array, Dynamic_Programming, Math, Bit_Manipulation, Bitmask	15	94.29
1993	Operations on Tree	Java	Medium	Hash_Table, Breadth_First_Search, Tree, Design	394	23.03
1992	Find All Groups of Farmland	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Matrix	7	89.08
1991	Find the Middle Index in Array	Java	Easy	Array, Prefix_Sum	0	100.00
1987	Number of Unique Good Subsequences	Java	Hard	String, Dynamic_Programming	19	53.78
1986	Minimum Number of Work Sessions to Finish the Tasks	Java	Medium	Array, Dynamic_Programming, Bit_Manipulation, Backtracking, Bitmask	2	90.18
1985	Find the Kth Largest Integer in the Array	Java	Medium	Array, String, Sorting, Heap_Priority_Queue, Divide_and_Conquer, Quickselect	34	77.42
1984	Minimum Difference Between Highest and Lowest of K Scores	Java	Easy	Array, Sorting, Sliding_Window	10	7.97
1982	Find Array Given Subset Sums	Java	Hard	Array, Divide_and_Conquer	70	64.91
1981	Minimize the Difference Between Target and Chosen Elements	Java	Medium	Array, Dynamic_Programming, Matrix	480	90.78
1980	Find Unique Binary String	Java	Medium	Array, String, Backtracking	7	31.88
1979	Find Greatest Common Divisor of Array	Java	Easy	Array, Math, Number_Theory	5	10.46
1977	Number of Ways to Separate Numbers	Java	Hard	String, Dynamic_Programming, Suffix_Array	150	94.52
1976	Number of Ways to Arrive at Destination	Java	Medium	Dynamic_Programming, Graph, Topological_Sort, Shortest_Path	14	77.59
1975	Maximum Matrix Sum	Java	Medium	Array, Greedy, Matrix	4	100.00
1974	Minimum Time to Type Word Using Special Typewriter	Java	Easy	String, Greedy	1	74.90
1971	Find if Path Exists in Graph	Java	Easy	Depth_First_Search, Breadth_First_Search, Graph	4	99.57
1970	Last Day Where You Can Still Cross	Java	Hard	Array, Depth_First_Search, Breadth_First_Search, Binary_Search, Matrix, Union_Find	14	95.24
1969	Minimum Non-Zero Product of the Array Elements	Java	Medium	Math, Greedy, Recursion	0	100.00
1968	Array With Elements Not Equal to Average of Neighbors	Java	Medium	Array, Sorting, Greedy	6	92.86
1967	Number of Strings That Appear as Substrings in Word	Java	Easy	String	3	10.82
1965	Employees With Missing Information	Sql	Easy	Database, SQL_I_Day_4_Union_&_Select	617	30.40
1964	Find the Longest Valid Obstacle Course at Each Position	Java	Hard	Array, Binary_Search, Binary_Indexed_Tree	79	85.00
1963	Minimum Number of Swaps to Make the String Balanced	Java	Medium	String, Greedy, Two_Pointers, Stack	17	93.71
1962	Remove Stones to Minimize the Total	Java	Medium	Array, Heap_Priority_Queue	761	48.67
1961	Check If String Is a Prefix of Array	Java	Easy	Array, String	2	60.87
1960	Maximum Product of the Length of Two Palindromic Substrings	Java	Hard	String, Hash_Function, Rolling_Hash	32	75.00
1959	Minimum Total Space Wasted With K Resizing Operations	Java	Medium	Array, Dynamic_Programming	42	95.45
1958	Check if Move is Legal	Java	Medium	Array, Matrix, Enumeration	0	100.00
1957	Delete Characters to Make Fancy String	Java	Easy	String	54	52.94
1955	Count Number of Special Subsequences	Java	Hard	Array, Dynamic_Programming	22	80.65
1954	Minimum Garden Perimeter to Collect Enough Apples	Java	Medium	Math, Binary_Search	2	59.57
1953	Maximum Number of Weeks for Which You Can Work	Java	Medium	Array, Greedy	4	40.93
1952	Three Divisors	Java	Easy	Math	1	84.91
1948	Delete Duplicate Folders in System	Java	Hard	Array, String, Hash_Table, Trie, Hash_Function	92	97.82
1947	Maximum Compatibility Score Sum	Java	Medium	Array, Dynamic_Programming, Bit_Manipulation, Backtracking, Bitmask	2	95.90
1946	Largest Number After Mutating Substring	Java	Medium	Array, String, Greedy	18	70.91
1945	Sum of Digits of String After Convert	Java	Easy	String, Simulation	2	72.10
1944	Number of Visible People in a Queue	Java	Hard	Array, Stack, Monotonic_Stack	9	99.65
1943	Describe the Painting	Java	Medium	Array, Prefix_Sum	29	93.92
1942	The Number of the Smallest Unoccupied Chair	Java	Medium	Array, Heap_Priority_Queue, Ordered_Set	73	49.69
1941	Check if All Characters Have Equal Number of Occurrences	Java	Easy	String, Hash_Table, Counting	2	86.25
1938	Maximum Genetic Difference Query	Java	Hard	Array, Bit_Manipulation, Trie	174	100.00
1937	Maximum Number of Points with Cost	Java	Medium	Array, Dynamic_Programming	18	44.04
1936	Add Minimum Number of Rungs	Java	Medium	Array, Greedy	1	100.00
1935	Maximum Number of Words You Can Type	Java	Easy	String, Hash_Table	2	95.06
1932	Merge BSTs to Create Single BST	Java	Hard	Hash_Table, Depth_First_Search, Tree, Binary_Search, Binary_Tree	87	48.43
1931	Painting a Grid With Three Different Colors	Java	Hard	Dynamic_Programming	7	99.32
1930	Unique Length-3 Palindromic Subsequences	Java	Medium	String, Hash_Table, Prefix_Sum	31	93.44
1929	Concatenation of Array	Java	Easy	Array	1	92.52
1928	Minimum Cost to Reach Destination in Time	Java	Hard	Dynamic_Programming, Graph	52	87.97
1927	Sum Game	Java	Medium	Math, Greedy, Game_Theory	13	34.41
1926	Nearest Exit from Entrance in Maze	Java	Medium	Array, Breadth_First_Search, Matrix, Graph_Theory_I_Day_6_Matrix_Related_Problems	12	40.55
1925	Count Square Sum Triples	Java	Easy	Math, Enumeration	25	48.78
1923	Longest Common Subpath	Java	Hard	Array, Binary_Search, Hash_Function, Rolling_Hash, Suffix_Array	517	73.88
1922	Count Good Numbers	Java	Medium	Math, Recursion	1	87.11
1921	Eliminate Maximum Number of Monsters	Java	Medium	Array, Sorting, Greedy	19	90.78
1920	Build Array from Permutation	Java	Easy	Array, Simulation	1	94.23
1916	Count Ways to Build Rooms in an Ant Colony	Java	Hard	Dynamic_Programming, Math, Tree, Graph, Topological_Sort, Combinatorics	1527	34.38
1915	Number of Wonderful Substrings	Java	Medium	String, Hash_Table, Bit_Manipulation, Prefix_Sum	31	82.46
1914	Cyclically Rotating a Grid	Java	Medium	Array, Matrix, Simulation	2	91.30
1913	Maximum Product Difference Between Two Pairs	Java	Easy	Array, Sorting	7	70.01
1912	Design Movie Rental System	Java	Hard	Array, Hash_Table, Design, Heap_Priority_Queue, Ordered_Set	562	74.14
1911	Maximum Alternating Subsequence Sum	Java	Medium	Array, Dynamic_Programming	12	51.75
1910	Remove All Occurrences of a Substring	Java	Medium	String	11	39.18
1909	Remove One Element to Make the Array Strictly Increasing	Java	Easy	Array	0	100.00
1906	Minimum Absolute Difference Queries	Java	Medium	Array, Hash_Table	176	71.61
1905	Count Sub Islands	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Graph_Theory_I_Day_3_Matrix_Related_Problems	24	85.54
1904	The Number of Full Rounds You Have Played	Java	Medium	String, Math	0	100.00
1903	Largest Odd Number in String	Java	Easy	String, Math, Greedy	6	23.18
1901	Find a Peak Element II	Java	Medium	Array, Binary_Search, Matrix, Divide_and_Conquer, Binary_Search_II_Day_17	0	100.00
1900	The Earliest and Latest Rounds Where Players Compete	Java	Hard	Dynamic_Programming, Memoization	1	92.68
1899	Merge Triplets to Form Target Triplet	Java	Medium	Array, Greedy	1	98.96
1898	Maximum Number of Removable Characters	Java	Medium	Array, String, Binary_Search, Binary_Search_II_Day_6	121	72.51
1897	Redistribute Characters to Make All Strings Equal	Java	Easy	String, Hash_Table, Counting	2	100.00
1896	Minimum Cost to Change the Final Value of Expression	Java	Hard	String, Dynamic_Programming, Math, Stack	29	95.24
1895	Largest Magic Square	Java	Medium	Array, Matrix, Prefix_Sum	7	80.72
1894	Find the Student that Will Replace the Chalk	Java	Medium	Array, Binary_Search, Simulation, Prefix_Sum, Binary_Search_II_Day_2	2	76.67
1893	Check if All the Integers in a Range Are Covered	Java	Easy	Array, Hash_Table, Prefix_Sum	1	72.81
1890	The Latest Login in 2020	Sql	Easy	Database, SQL_I_Day_8_Function	571	73.59
1889	Minimum Space Wasted From Packaging	Java	Hard	Array, Sorting, Binary_Search, Prefix_Sum	98	45.92
1888	Minimum Number of Flips to Make the Binary String Alternating	Java	Medium	String, Greedy	30	75.70
1887	Reduction Operations to Make the Array Elements Equal	Java	Medium	Array, Sorting	26	94.56
1886	Determine Whether Matrix Can Be Obtained By Rotation	Java	Easy	Array, Matrix, Programming_Skills_II_Day_7	1	78.38
1884	Egg Drop With 2 Eggs and N Floors	Java	Medium	Dynamic_Programming, Math	0	100.00
1883	Minimum Skips to Arrive at Meeting On Time	Java	Hard	Array, Dynamic_Programming	70	73.08
1882	Process Tasks Using Servers	Java	Medium	Array, Heap_Priority_Queue	290	77.45
1881	Maximum Value after Insertion	Java	Medium	String, Greedy	12	85.08
1880	Check if Word Equals Summation of Two Words	Java	Easy	String	2	31.97
1879	Minimum XOR Sum of Two Arrays	Java	Hard	Array, Dynamic_Programming, Bit_Manipulation, Bitmask	15	63.49
1878	Get Biggest Three Rhombus Sums in a Grid	Java	Medium	Array, Math, Sorting, Matrix, Heap_Priority_Queue, Prefix_Sum	41	82.03
1877	Minimize Maximum Pair Sum in Array	Java	Medium	Array, Sorting, Greedy, Two_Pointers	62	82.87
1876	Substrings of Size Three with Distinct Characters	Java	Easy	String, Hash_Table, Counting, Sliding_Window	2	60.62
1873	Calculate Special Bonus	Sql	Easy	Database, SQL_I_Day_2_Select_&_Order	543	71.60
1872	Stone Game VIII	Java	Hard	Array, Dynamic_Programming, Math, Prefix_Sum, Game_Theory	3	98.18
1871	Jump Game VII	Java	Medium	String, Two_Pointers, Prefix_Sum	14	76.25
1870	Minimum Speed to Arrive on Time	Java	Medium	Array, Binary_Search, Binary_Search_II_Day_6	86	88.58
1869	Longer Contiguous Segments of Ones than Zeros	Java	Easy	String	1	88.10
1866	Number of Ways to Rearrange Sticks With K Sticks Visible	Java	Hard	Dynamic_Programming, Math, Combinatorics	67	96.33
1865	Finding Pairs With a Certain Sum	Java	Medium	Array, Hash_Table, Design	195	83.97
1864	Minimum Number of Swaps to Make the Binary String Alternating	Java	Medium	String, Greedy	3	43.20
1863	Sum of All Subset XOR Totals	Java	Easy	Array, Math, Bit_Manipulation, Backtracking, Combinatorics	22	11.36
1862	Sum of Floored Pairs	Java	Hard	Array, Math, Binary_Search, Prefix_Sum	115	70.91
1861	Rotating the Box	Java	Medium	Array, Matrix, Two_Pointers	8	92.84
1860	Incremental Memory Leak	Java	Medium	Simulation	5	78.57
1859	Sorting the Sentence	Java	Easy	String, Sorting	2	50.32
1857	Largest Color Value in a Directed Graph	Java	Hard	Hash_Table, Dynamic_Programming, Graph, Counting, Memoization, Topological_Sort	110	73.53
1856	Maximum Subarray Min-Product	Java	Medium	Array, Stack, Prefix_Sum, Monotonic_Stack	28	92.10
1855	Maximum Distance Between a Pair of Values	Java	Medium	Array, Greedy, Binary_Search, Two_Pointers, Binary_Search_I_Day_11	4	62.20
1854	Maximum Population Year	Java	Easy	Array, Counting	0	100.00
1851	Minimum Interval to Include Each Query	Java	Hard	Array, Sorting, Binary_Search, Heap_Priority_Queue, Line_Sweep	140	84.24
1850	Minimum Adjacent Swaps to Reach the Kth Smallest Number	Java	Medium	String, Greedy, Two_Pointers	24	72.99
1849	Splitting a String Into Descending Consecutive Values	Java	Medium	String, Backtracking	1	87.61
1848	Minimum Distance to the Target Element	Java	Easy	Array	1	58.33
1847	Closest Room	Java	Hard	Array, Sorting, Binary_Search	95	81.67
1846	Maximum Element After Decreasing and Rearranging	Java	Medium	Array, Sorting, Greedy	4	93.59
1845	Seat Reservation Manager	Java	Medium	Design, Heap_Priority_Queue, Programming_Skills_II_Day_17	47	87.63
1844	Replace All Digits with Characters	Java	Easy	String	1	70.12
1840	Maximum Building Height	Java	Hard	Array, Math	59	94.64
1839	Longest Substring Of All Vowels in Order	Java	Medium	String, Sliding_Window	24	86.13
1838	Frequency of the Most Frequent Element	Java	Medium	Array, Sorting, Greedy, Binary_Search, Prefix_Sum, Sliding_Window, Binary_Search_II_Day_9	11	100.00
1837	Sum of Digits in Base K	Java	Easy	Math	1	10.42
1835	Find XOR Sum of All Pairs Bitwise AND	Java	Hard	Array, Math, Bit_Manipulation	1	100.00
1834	Single-Threaded CPU	Java	Medium	Array, Sorting, Heap_Priority_Queue	134	83.22
1833	Maximum Ice Cream Bars	Java	Medium	Array, Sorting, Greedy	39	84.49
1832	Check if the Sentence Is Pangram	Java	Easy	String, Hash_Table	3	41.29
1830	Minimum Number of Operations to Make String Sorted	Java	Hard	String, Math, Combinatorics	125	94.12
1829	Maximum XOR for Each Query	Java	Medium	Array, Bit_Manipulation, Prefix_Sum	7	20.94
1828	Queries on Number of Points Inside a Circle	Java	Medium	Array, Math, Geometry	23	75.03
1827	Minimum Operations to Make the Array Increasing	Java	Easy	Array, Greedy	4	35.67
1825	Finding MK Average	Java	Hard	Design, Heap_Priority_Queue, Ordered_Set, Queue	83	60.59
1824	Minimum Sideway Jumps	Java	Medium	Array, Dynamic_Programming, Greedy	17	96.34
1823	Find the Winner of the Circular Game	Java	Medium	Array, Math, Simulation, Recursion, Queue, Data_Structure_II_Day_14_Stack_Queue	3	64.85
1822	Sign of the Product of an Array	Java	Easy	Array, Math, Programming_Skills_I_Day_4_Loop	1	58.05
1819	Number of Different Subsequences GCDs	Java	Hard	Array, Math, Counting, Number_Theory	116	96.43
1818	Minimum Absolute Sum Difference	Java	Medium	Array, Sorting, Binary_Search, Ordered_Set, Binary_Search_II_Day_7	13	99.44
1817	Finding the Users Active Minutes	Java	Medium	Array, Hash_Table	16	91.64
1816	Truncate Sentence	Java	Easy	Array, String	2	65.71
1815	Maximum Number of Groups Getting Fresh Donuts	Java	Hard	Array, Dynamic_Programming, Bit_Manipulation, Bitmask, Memoization	7	86.67
1814	Count Nice Pairs in an Array	Java	Medium	Array, Hash_Table, Math, Counting	47	83.12
1813	Sentence Similarity III	Java	Medium	Array, String, Two_Pointers	3	41.38
1812	Determine Color of a Chessboard Square	Java	Easy	String, Math	1	49.36
1808	Maximize Number of Nice Divisors	Java	Hard	Math, Recursion	1	80.77
1807	Evaluate the Bracket Pairs of a String	Java	Medium	Array, String, Hash_Table	40	80.47
1806	Minimum Number of Operations to Reinitialize a Permutation	Java	Medium	Array, Math, Simulation	0	100.00
1805	Number of Different Integers in a String	Java	Easy	String, Hash_Table	3	79.55
1803	Count Pairs With XOR in a Range	Java	Hard	Array, Bit_Manipulation, Trie	77	100.00
1802	Maximum Value at a Given Index in a Bounded Array	Java	Medium	Greedy, Binary_Search, Binary_Search_II_Day_17	2	58.44
1801	Number of Orders in the Backlog	Java	Medium	Array, Heap_Priority_Queue, Simulation	39	78.46
1800	Maximum Ascending Subarray Sum	Java	Easy	Array	0	100.00
1799	Maximize Score After N Operations	Java	Hard	Array, Dynamic_Programming, Math, Bit_Manipulation, Backtracking, Bitmask, Number_Theory	164	78.22
1798	Maximum Number of Consecutive Values You Can Make	Java	Medium	Array, Greedy	11	96.30
1797	Design Authentication Manager	Java	Medium	Hash_Table, Design, Programming_Skills_II_Day_19	41	92.67
1796	Second Largest Digit in a String	Java	Easy	String, Hash_Table	2	87.67
1795	Rearrange Products Table	Sql	Easy	Database, SQL_I_Day_4_Union_&_Select	497	64.83
1793	Maximum Score of a Good Subarray	Java	Hard	Array, Binary_Search, Two_Pointers, Stack, Monotonic_Stack	3	97.56
1792	Maximum Average Pass Ratio	Java	Medium	Array, Greedy, Heap_Priority_Queue	456	89.78
1791	Find Center of Star Graph	Java	Easy	Graph	0	100.00
1790	Check if One String Swap Can Make Strings Equal	Java	Easy	String, Hash_Table, Counting, Programming_Skills_I_Day_4_Loop	0	100.00
1787	Make the XOR of All Segments Equal to Zero	Java	Hard	Array, Dynamic_Programming, Bit_Manipulation	102	89.47
1786	Number of Restricted Paths From First to Last Node	Java	Medium	Dynamic_Programming, Heap_Priority_Queue, Graph, Topological_Sort, Shortest_Path	86	88.56
1785	Minimum Elements to Add to Form a Given Sum	Java	Medium	Array, Greedy	2	70.75
1784	Check if Binary String Has at Most One Segment of Ones	Java	Easy	String	1	65.60
1782	Count Pairs Of Nodes	Java	Hard	Binary_Search, Two_Pointers, Graph	128	86.96
1781	Sum of Beauty of All Substrings	Java	Medium	String, Hash_Table, Counting	38	100.00
1780	Check if Number is a Sum of Powers of Three	Java	Medium	Math	2	19.71
1779	Find Nearest Point That Has the Same X or Y Coordinate	Java	Easy	Array, Programming_Skills_I_Day_3_Conditional_Statements	1	100.00
1776	Car Fleet II	Java	Hard	Array, Math, Stack, Heap_Priority_Queue, Monotonic_Stack	19	93.81
1775	Equal Sum Arrays With Minimum Number of Operations	Java	Medium	Array, Hash_Table, Greedy, Counting	16	70.88
1774	Closest Dessert Cost	Java	Medium	Array, Dynamic_Programming, Backtracking	5	82.32
1773	Count Items Matching a Rule	Java	Easy	Array, String	3	98.33
1771	Maximize Palindrome Length From Subsequences	Java	Hard	String, Dynamic_Programming	58	87.88
1770	Maximum Score from Performing Multiplication Operations	Java	Medium	Array, Dynamic_Programming	31	92.41
1769	Minimum Number of Operations to Move All Balls to Each Box	Java	Medium	Array, String	3	91.66
1768	Merge Strings Alternately	Java	Easy	String, Two_Pointers, Programming_Skills_I_Day_8_String	1	86.26
1766	Tree of Coprimes	Java	Hard	Math, Depth_First_Search, Breadth_First_Search, Tree	111	94.07
1765	Map of Highest Peak	Java	Medium	Array, Breadth_First_Search, Matrix	64	85.40
1764	Form Array by Concatenating Subarrays of Another Array	Java	Medium	Array, Greedy, String_Matching	7	16.90
1763	Longest Nice Substring	Java	Easy	String, Hash_Table, Bit_Manipulation, Sliding_Window	5	61.88
1761	Minimum Degree of a Connected Trio in a Graph	Java	Hard	Graph	33	89.17
1760	Minimum Limit of Balls in a Bag	Java	Medium	Array, Binary_Search, Binary_Search_II_Day_3	44	78.49
1759	Count Number of Homogenous Substrings	Java	Medium	String, Math	19	42.40
1758	Minimum Changes To Make Alternating Binary String	Java	Easy	String	2	98.92
1757	Recyclable and Low Fat Products	Sql	Easy	Database, SQL_I_Day_1_Select	475	71.54
1755	Closest Subsequence Sum	Java	Hard	Array, Dynamic_Programming, Two_Pointers, Bit_Manipulation, Bitmask	383	87.60
1754	Largest Merge Of Two Strings	Java	Medium	String, Greedy, Two_Pointers	37	89.23
1753	Maximum Score From Removing Stones	Java	Medium	Math, Greedy, Heap_Priority_Queue	0	100.00
1752	Check if Array Is Sorted and Rotated	Java	Easy	Array	0	100.00
1751	Maximum Number of Events That Can Be Attended II	Java	Hard	Array, Dynamic_Programming, Binary_Search	12	98.33
1750	Minimum Length of String After Deleting Similar Ends	Java	Medium	String, Two_Pointers	5	68.68
1749	Maximum Absolute Sum of Any Subarray	Java	Medium	Array, Dynamic_Programming	3	90.60
1748	Sum of Unique Elements	Java	Easy	Array, Hash_Table, Counting	2	54.08
1745	Palindrome Partitioning IV	Java	Hard	String, Dynamic_Programming	10	100.00
1744	Can You Eat Your Favorite Candy on Your Favorite Day?	Java	Medium	Array, Prefix_Sum	5	100.00
1743	Restore the Array From Adjacent Pairs	Java	Medium	Array, Hash_Table	95	99.08
1742	Maximum Number of Balls in a Box	Java	Easy	Hash_Table, Math, Counting	7	98.87
1741	Find Total Time Spent by Each Employee	Sql	Easy	Database, SQL_I_Day_8_Function	414	93.27
1739	Building Boxes	Java	Hard	Math, Greedy, Binary_Search	1	84.38
1738	Find Kth Largest XOR Coordinate Value	Java	Medium	Array, Matrix, Bit_Manipulation, Heap_Priority_Queue, Prefix_Sum, Divide_and_Conquer, Quickselect	40	97.08
1737	Change Minimum Characters to Satisfy One of Three Conditions	Java	Medium	String, Hash_Table, Prefix_Sum, Counting	8	87.70
1736	Latest Time by Replacing Hidden Digits	Java	Easy	String, Greedy	3	35.96
1735	Count Ways to Make Array With Product	Java	Hard	Array, Dynamic_Programming, Math	189	43.75
1734	Decode XORed Permutation	Java	Medium	Array, Bit_Manipulation	6	34.52
1733	Minimum Number of People to Teach	Java	Medium	Array, Greedy	11	98.57
1732	Find the Highest Altitude	Java	Easy	Array, Prefix_Sum	0	100.00
1729	Find Followers Count	Sql	Easy	Database, SQL_I_Day_7_Function	456	88.39
1728	Cat and Mouse II	Java	Hard	Dynamic_Programming, Math, Breadth_First_Search, Graph, Memoization, Game_Theory	12	99.12
1727	Largest Submatrix With Rearrangements	Java	Medium	Array, Sorting, Greedy, Matrix	9	90.48
1726	Tuple with Same Product	Java	Medium	Array, Hash_Table	235	90.73
1725	Number Of Rectangles That Can Form The Largest Square	Java	Easy	Array	1	100.00
1723	Find Minimum Time to Finish All Jobs	Java	Hard	Array, Dynamic_Programming, Bit_Manipulation, Backtracking, Bitmask	3	76.73
1722	Minimize Hamming Distance After Swap Operations	Java	Medium	Array, Depth_First_Search, Union_Find	51	94.82
1721	Swapping Nodes in a Linked List	Java	Medium	Two_Pointers, Linked_List	2	100.00
1720	Decode XORed Array	Java	Easy	Array, Bit_Manipulation	1	100.00
1719	Number Of Ways To Reconstruct A Tree	Java	Hard	Tree, Graph, Topological_Sort	91	67.57
1718	Construct the Lexicographically Largest Valid Sequence	Java	Medium	Array, Backtracking	0	100.00
1717	Maximum Score From Removing Substrings	Java	Medium	String, Greedy, Stack	19	99.25
1716	Calculate Money in Leetcode Bank	Java	Easy	Math	1	65.33
1713	Minimum Operations to Make a Subsequence	Java	Hard	Array, Hash_Table, Greedy, Binary_Search	81	95.39
1712	Ways to Split Array Into Three Subarrays	Java	Medium	Array, Binary_Search, Two_Pointers, Prefix_Sum, Binary_Search_II_Day_10	16	84.24
1711	Count Good Meals	Java	Medium	Array, Hash_Table	75	93.77
1710	Maximum Units on a Truck	Java	Easy	Array, Sorting, Greedy	9	78.69
1707	Maximum XOR With an Element From Array	Java	Hard	Array, Bit_Manipulation, Trie	150	97.24
1706	Where Will the Ball Fall	Java	Medium	Array, Dynamic_Programming, Depth_First_Search, Matrix, Simulation	2	64.55
1705	Maximum Number of Eaten Apples	Java	Medium	Array, Greedy, Heap_Priority_Queue	53	77.63
1704	Determine if String Halves Are Alike	Java	Easy	String, Counting	1	100.00
1703	Minimum Adjacent Swaps for K Consecutive Ones	Java	Hard	Array, Greedy, Prefix_Sum, Sliding_Window	10	96.25
1702	Maximum Binary String After Change	Java	Medium	String, Greedy	42	82.86
1701	Average Waiting Time	Java	Medium	Array, Simulation	2	100.00
1700	Number of Students Unable to Eat Lunch	Java	Easy	Array, Stack, Simulation, Queue	2	63.14
1697	Checking Existence of Edge Length Limited Paths	Java	Hard	Array, Sorting, Graph, Union_Find	94	90.48
1696	Jump Game VI	Java	Medium	Array, Dynamic_Programming, Heap_Priority_Queue, Sliding_Window, Queue, Monotonic_Queue	23	86.05
1695	Maximum Erasure Value	Java	Medium	Array, Hash_Table, Sliding_Window	5	99.82
1694	Reformat Phone Number	Java	Easy	String	1	99.67
1693	Daily Leads and Partners	Sql	Easy	Database, SQL_I_Day_7_Function	463	78.98
1691	Maximum Height by Stacking Cuboids	Java	Hard	Array, Dynamic_Programming, Sorting	6	83.07
1690	Stone Game VII	Java	Medium	Array, Dynamic_Programming, Math, Game_Theory	18	96.71
1689	Partitioning Into Minimum Number Of Deci-Binary Numbers	Java	Medium	String, Greedy	5	93.98
1688	Count of Matches in Tournament	Java	Easy	Math, Simulation	0	100.00
1687	Delivering Boxes from Storage to Ports	Java	Hard	Array, Dynamic_Programming, Heap_Priority_Queue, Queue, Segment_Tree, Monotonic_Queue	9	91.09
1686	Stone Game VI	Java	Medium	Array, Math, Sorting, Greedy, Heap_Priority_Queue, Game_Theory	139	62.50
1685	Sum of Absolute Differences in a Sorted Array	Java	Medium	Array, Math, Prefix_Sum	4	80.17
1684	Count the Number of Consistent Strings	Java	Easy	Array, String, Hash_Table, Bit_Manipulation	6	97.04
1681	Minimum Incompatibility	Java	Hard	Array, Dynamic_Programming, Bit_Manipulation, Bitmask	1	100.00
1680	Concatenation of Consecutive Binary Numbers	Java	Medium	Math, Bit_Manipulation, Simulation	70	95.05
1679	Max Number of K-Sum Pairs	Java	Medium	Array, Hash_Table, Sorting, Two_Pointers	20	91.22
1678	Goal Parser Interpretation	Java	Easy	String, Programming_Skills_I_Day_8_String	0	100.00
1675	Minimize Deviation in Array	Java	Hard	Array, Greedy, Heap_Priority_Queue, Ordered_Set	104	88.83
1674	Minimum Moves to Make Array Complementary	Java	Medium	Array, Hash_Table, Prefix_Sum	29	22.22
1673	Find the Most Competitive Subsequence	Java	Medium	Array, Greedy, Stack, Monotonic_Stack	7	96.82
1672	Richest Customer Wealth	Java	Easy	Array, Matrix, Programming_Skills_I_Day_6_Array	0	100.00
1671	Minimum Number of Removals to Make Mountain Array	Java	Hard	Array, Dynamic_Programming, Greedy, Binary_Search	19	81.23
1670	Design Front Middle Back Queue	Java	Medium	Array, Design, Linked_List, Queue, Data_Stream	5	100.00
1669	Merge In Between Linked Lists	Java	Medium	Linked_List	2	76.51
1668	Maximum Repeating Substring	Java	Easy	String, String_Matching	1	93.15
1667	Fix Names in a Table	Sql	Easy	Database, SQL_I_Day_3_String_Processing_Functions	559	80.29
1665	Minimum Initial Energy to Finish Tasks	Java	Hard	Array, Sorting, Greedy	30	81.16
1664	Ways to Make a Fair Array	Java	Medium	Array, Dynamic_Programming	11	71.76
1663	Smallest String With A Given Numeric Value	Java	Medium	String, Greedy	22	75.05
1662	Check If Two String Arrays are Equivalent	Java	Easy	Array, String	0	100.00
1659	Maximize Grid Happiness	Java	Hard	Dynamic_Programming, Bit_Manipulation, Bitmask, Memoization	95	75.00
1658	Minimum Operations to Reduce X to Zero	Java	Medium	Array, Hash_Table, Binary_Search, Prefix_Sum, Sliding_Window	4	98.95
1657	Determine if Two Strings Are Close	Java	Medium	String, Hash_Table, Sorting	12	97.58
1656	Design an Ordered Stream	Java	Easy	Array, Hash_Table, Design, Data_Stream	95	74.07
1655	Distribute Repeating Integers	Java	Hard	Array, Dynamic_Programming, Bit_Manipulation, Backtracking, Bitmask	7	94.23
1654	Minimum Jumps to Reach Home	Java	Medium	Array, Dynamic_Programming, Breadth_First_Search, Graph_Theory_I_Day_11_Breadth_First_Search	6	99.87
1653	Minimum Deletions to Make String Balanced	Java	Medium	String, Dynamic_Programming, Stack	26	90.44
1652	Defuse the Bomb	Java	Easy	Array	0	100.00
1649	Create Sorted Array through Instructions	Java	Hard	Array, Binary_Search, Ordered_Set, Divide_and_Conquer, Segment_Tree, Binary_Indexed_Tree, Merge_Sort	35	100.00
1648	Sell Diminishing-Valued Colored Balls	Java	Medium	Array, Math, Sorting, Greedy, Binary_Search, Heap_Priority_Queue, Binary_Search_II_Day_19	27	80.64
1647	Minimum Deletions to Make Character Frequencies Unique	Java	Medium	String, Sorting, Greedy	8	100.00
1646	Get Maximum in Generated Array	Java	Easy	Array, Dynamic_Programming, Simulation	0	100.00
1643	Kth Smallest Instructions	Java	Hard	Array, Dynamic_Programming, Math, Combinatorics	1	100.00
1642	Furthest Building You Can Reach	Java	Medium	Array, Greedy, Heap_Priority_Queue	13	98.96
1641	Count Sorted Vowel Strings	Java	Medium	Dynamic_Programming	0	100.00
1640	Check Array Formation Through Concatenation	Java	Easy	Array, Hash_Table	1	87.62
1639	Number of Ways to Form a Target String Given a Dictionary	Java	Hard	Array, String, Dynamic_Programming	50	95.33
1638	Count Substrings That Differ by One Character	Java	Medium	String, Hash_Table, Dynamic_Programming	5	76.39
1637	Widest Vertical Area Between Two Points Containing No Points	Java	Medium	Array, Sorting	17	74.19
1636	Sort Array by Increasing Frequency	Java	Easy	Array, Hash_Table, Sorting	7	75.30
1632	Rank Transform of a Matrix	Java	Hard	Array, Greedy, Matrix, Graph, Union_Find, Topological_Sort	65	100.00
1631	Path With Minimum Effort	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Binary_Search, Matrix, Heap_Priority_Queue, Union_Find	75	60.52
1630	Arithmetic Subarrays	Java	Medium	Array, Sorting, Programming_Skills_II_Day_9	8	93.62
1629	Slowest Key	Java	Easy	Array, String	4	14.60
1627	Graph Connectivity With Threshold	Java	Hard	Array, Math, Union_Find	7	98.45
1626	Best Team With No Conflicts	Java	Medium	Array, Dynamic_Programming, Sorting	38	92.31
1625	Lexicographically Smallest String After Applying Operations	Java	Medium	String, Breadth_First_Search	91	91.80
1624	Largest Substring Between Two Equal Characters	Java	Easy	String, Hash_Table	1	85.13
1622	Fancy Sequence	Java	Hard	Math, Design, Segment_Tree	40	96.55
1621	Number of Sets of K Non-Overlapping Line Segments	Java	Medium	Dynamic_Programming, Math	16	94.74
1620	Coordinate With Maximum Network Quality	Java	Medium	Array, Enumeration	111	7.14
1619	Mean of Array After Removing Some Elements	Java	Easy	Array, Sorting	2	99.81
1617	Count Subtrees With Max Distance Between Cities	Java	Hard	Dynamic_Programming, Tree, Bit_Manipulation, Bitmask, Enumeration	52	78.95
1616	Split Two Strings to Make Palindrome	Java	Medium	String, Greedy, Two_Pointers	4	89.77
1615	Maximal Network Rank	Java	Medium	Graph, Graph_Theory_I_Day_14_Graph_Theory	3	97.34
1614	Maximum Nesting Depth of the Parentheses	Java	Easy	String, Stack	1	80.44
1611	Minimum One Bit Operations to Make Integers Zero	Java	Hard	Dynamic_Programming, Bit_Manipulation, Memoization	1	88.24
1610	Maximum Number of Visible Points	Java	Hard	Array, Math, Sorting, Sliding_Window, Geometry	122	97.44
1609	Even Odd Tree	Java	Medium	Breadth_First_Search, Tree, Binary_Tree	8	98.81
1608	Special Array With X Elements Greater Than or Equal X	Java	Easy	Array, Sorting, Binary_Search, Binary_Search_I_Day_7	2	61.14
1606	Find Servers That Handled Most Number of Requests	Java	Hard	Array, Greedy, Heap_Priority_Queue, Ordered_Set	118	98.21
1605	Find Valid Matrix Given Row and Column Sums	Java	Medium	Array, Greedy, Matrix	2	98.45
1604	Alert Using Same Key-Card Three or More Times in a One Hour Period	Java	Medium	Array, String, Hash_Table, Sorting	77	95.79
1603	Design Parking System	Java	Easy	Design, Simulation, Counting, Programming_Skills_I_Day_12_Class_&_Object	8	76.16
1601	Maximum Number of Achievable Transfer Requests	Java	Hard	Array, Bit_Manipulation, Backtracking, Enumeration	26	84.02
1600	Throne Inheritance	Java	Medium	Hash_Table, Depth_First_Search, Tree, Design	267	90.38
1599	Maximum Profit of Operating a Centennial Wheel	Java	Medium	Array, Simulation	4	95.65
1598	Crawler Log Folder	Java	Easy	Array, String, Stack	0	100.00
1595	Minimum Cost to Connect Two Groups of Points	Java	Hard	Array, Dynamic_Programming, Matrix, Bit_Manipulation, Bitmask	74	64.83
1594	Maximum Non Negative Product in a Matrix	Java	Medium	Array, Dynamic_Programming, Matrix	1	100.00
1593	Split a String Into the Max Number of Unique Substrings	Java	Medium	String, Hash_Table, Backtracking	8	95.81
1592	Rearrange Spaces Between Words	Java	Easy	String	3	67.74
1591	Strange Printer II	Java	Hard	Array, Matrix, Graph, Topological_Sort	12	90.00
1590	Make Sum Divisible by P	Java	Medium	Array, Hash_Table, Prefix_Sum	56	62.20
1589	Maximum Sum Obtained of Any Permutation	Java	Medium	Array, Sorting, Greedy, Prefix_Sum	25	92.45
1588	Sum of All Odd Length Subarrays	Java	Easy	Array, Math, Prefix_Sum, Programming_Skills_I_Day_6_Array	0	100.00
1587	Bank Account Summary II	Sql	Easy	Database, SQL_I_Day_10_Where	630	60.32
1585	Check If String Is Transformable With Substring Sort Operations	Java	Hard	String, Sorting, Greedy	20	97.22
1584	Min Cost to Connect All Points	Java	Medium	Array, Union_Find, Minimum_Spanning_Tree	134	87.37
1583	Count Unhappy Friends	Java	Medium	Array, Simulation	3	93.13
1582	Special Positions in a Binary Matrix	Java	Easy	Array, Matrix	2	82.12
1581	Customer Who Visited but Did Not Make Any Transactions	Sql	Easy	Database, SQL_I_Day_5_Union	1039	76.99
1579	Remove Max Number of Edges to Keep Graph Fully Traversable	Java	Hard	Graph, Union_Find	30	66.23
1578	Minimum Time to Make Rope Colorful	Java	Medium	Array, String, Dynamic_Programming, Greedy	4	100.00
1577	Number of Ways Where Square of Number Is Equal to Product of Two Numbers	Java	Medium	Array, Hash_Table, Math, Two_Pointers	20	86.27
1576	Replace All ?'s to Avoid Consecutive Repeating Characters	Java	Easy	String	2	82.74
1575	Count All Possible Routes	Java	Hard	Array, Dynamic_Programming, Memoization	111	72.26
1574	Shortest Subarray to be Removed to Make Array Sorted	Java	Medium	Array, Binary_Search, Two_Pointers, Stack, Monotonic_Stack, Binary_Search_II_Day_14	2	84.97
1573	Number of Ways to Split a String	Java	Medium	String, Math	9	82.09
1572	Matrix Diagonal Sum	Java	Easy	Array, Matrix, Programming_Skills_I_Day_7_Array	3	10.25
1569	Number of Ways to Reorder Array to Get Same BST	Java	Hard	Array, Dynamic_Programming, Math, Tree, Binary_Tree, Union_Find, Binary_Search_Tree, Divide_and_Conquer, Memoization, Combinatorics	21	97.44
1568	Minimum Number of Days to Disconnect Island	Java	Hard	Array, Depth_First_Search, Breadth_First_Search, Matrix, Strongly_Connected_Component	1	100.00
1567	Maximum Length of Subarray With Positive Product	Java	Medium	Array, Dynamic_Programming, Greedy, Dynamic_Programming_I_Day_6	4	80.86
1566	Detect Pattern of Length M Repeated K or More Times	Java	Easy	Array, Enumeration	1	49.25
1563	Stone Game V	Java	Hard	Array, Dynamic_Programming, Math, Game_Theory	36	95.56
1562	Find Latest Group of Size M	Java	Medium	Array, Binary_Search, Simulation, Binary_Search_II_Day_19	8	90.00
1561	Maximum Number of Coins You Can Get	Java	Medium	Array, Math, Sorting, Greedy, Game_Theory	34	69.29
1560	Most Visited Sector in a Circular Track	Java	Easy	Array, Simulation	1	88.89
1559	Detect Cycles in 2D Grid	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find	22	82.51
1558	Minimum Numbers of Function Calls to Make Target Array	Java	Medium	Array, Greedy	42	69.17
1557	Minimum Number of Vertices to Reach All Nodes	Java	Medium	Graph, Data_Structure_II_Day_19_Graph, Graph_Theory_I_Day_13_Graph_Theory	8	99.94
1556	Thousand Separator	Java	Easy	String	1	57.92
1553	Minimum Number of Days to Eat N Oranges	Java	Hard	Dynamic_Programming, Memoization	5	91.90
1552	Magnetic Force Between Two Balls	Java	Medium	Array, Sorting, Binary_Search, Binary_Search_II_Day_4	39	99.65
1551	Minimum Operations to Make Array Equal	Java	Medium	Math	7	12.93
1550	Three Consecutive Odds	Java	Easy	Array	0	100.00
1547	Minimum Cost to Cut a Stick	Java	Hard	Array, Dynamic_Programming	6	100.00
1546	Maximum Number of Non-Overlapping Subarrays With Sum Equals Target	Java	Medium	Array, Hash_Table, Greedy, Prefix_Sum	56	71.58
1545	Find Kth Bit in Nth Binary String	Java	Medium	String, Recursion	0	100.00
1544	Make The String Great	Java	Easy	String, Stack	6	50.00
1542	Find Longest Awesome Substring	Java	Hard	String, Hash_Table, Bit_Manipulation	12	84.16
1541	Minimum Insertions to Balance a Parentheses String	Java	Medium	String, Greedy, Stack	12	85.50
1540	Can Convert String in K Moves	Java	Medium	String, Hash_Table	10	100.00
1539	Kth Missing Positive Number	Java	Easy	Array, Binary_Search, Binary_Search_I_Day_6	0	100.00
1537	Get the Maximum Score	Java	Hard	Array, Dynamic_Programming, Greedy, Two_Pointers	6	58.14
1536	Minimum Swaps to Arrange a Binary Grid	Java	Medium	Array, Greedy, Matrix	1	100.00
1535	Find the Winner of an Array Game	Java	Medium	Array, Simulation	1	86.99
1534	Count Good Triplets	Java	Easy	Array, Enumeration	14	82.96
1531	String Compression II	Java	Hard	String, Dynamic_Programming	34	83.91
1530	Number of Good Leaf Nodes Pairs	Java	Medium	Depth_First_Search, Tree, Binary_Tree	3	94.18
1529	Minimum Suffix Flips	Java	Medium	String, Greedy	6	89.67
1528	Shuffle String	Java	Easy	Array, String	2	54.77
1527	Patients With a Condition	Sql	Easy	Database, SQL_I_Day_3_String_Processing_Functions	308	66.93
1526	Minimum Number of Increments on Subarrays to Form a Target Array	Java	Hard	Array, Dynamic_Programming, Greedy, Stack, Monotonic_Stack	4	70.36
1525	Number of Good Ways to Split a String	Java	Medium	String, Dynamic_Programming, Bit_Manipulation	19	69.66
1524	Number of Sub-arrays With Odd Sum	Java	Medium	Array, Dynamic_Programming, Math, Prefix_Sum	9	90.24
1523	Count Odd Numbers in an Interval Range	Java	Easy	Math, Programming_Skills_I_Day_1_Basic_Data_Type	0	100.00
1521	Find a Value of a Mysterious Function Closest to Target	Java	Hard	Array, Binary_Search, Bit_Manipulation, Segment_Tree	9	100.00
1520	Maximum Number of Non-Overlapping Substrings	Java	Hard	String, Greedy	15	92.93
1519	Number of Nodes in the Sub-Tree With the Same Label	Java	Medium	Hash_Table, Depth_First_Search, Breadth_First_Search, Tree, Counting	60	98.13
1518	Water Bottles	Java	Easy	Math, Simulation	0	100.00
1515	Best Position for a Service Centre	Java	Hard	Math, Geometry, Randomized	6	87.14
1514	Path with Maximum Probability	Java	Medium	Heap_Priority_Queue, Graph, Shortest_Path	31	93.10
1513	Number of Substrings With Only 1s	Java	Medium	String, Math	3	97.83
1512	Number of Good Pairs	Java	Easy	Array, Hash_Table, Math, Counting	1	84.97
1510	Stone Game IV	Java	Hard	Dynamic_Programming, Math, Game_Theory	12	85.75
1509	Minimum Difference Between Largest and Smallest Value in Three Moves	Java	Medium	Array, Sorting, Greedy	19	76.94
1508	Range Sum of Sorted Subarray Sums	Java	Medium	Array, Sorting, Binary_Search, Two_Pointers, Binary_Search_II_Day_14	60	93.84
1507	Reformat Date	Java	Easy	String	1	98.73
1505	Minimum Possible Integer After at Most K Adjacent Swaps On Digits	Java	Hard	String, Greedy, Segment_Tree, Binary_Indexed_Tree	12	96.77
1504	Count Submatrices With All Ones	Java	Medium	Array, Dynamic_Programming, Matrix, Stack, Monotonic_Stack	9	85.86
1503	Last Moment Before All Ants Fall Out of a Plank	Java	Medium	Array, Simulation, Brainteaser	1	81.72
1502	Can Make Arithmetic Progression From Sequence	Java	Easy	Array, Sorting, Programming_Skills_I_Day_4_Loop	4	14.13
1499	Max Value of Equation	Java	Hard	Array, Heap_Priority_Queue, Sliding_Window, Queue, Monotonic_Queue	7	98.61
1498	Number of Subsequences That Satisfy the Given Sum Condition	Java	Medium	Array, Sorting, Binary_Search, Two_Pointers, Binary_Search_II_Day_15	27	99.13
1497	Check If Array Pairs Are Divisible by k	Java	Medium	Array, Hash_Table, Counting	7	97.44
1496	Path Crossing	Java	Easy	String, Hash_Table	1	97.41
1494	Parallel Courses II	Java	Hard	Dynamic_Programming, Bit_Manipulation, Graph, Bitmask	325	42.24
1493	Longest Subarray of 1's After Deleting One Element	Java	Medium	Dynamic_Programming, Math, Sliding_Window	2	87.25
1492	The kth Factor of n	Java	Medium	Math	1	83.94
1491	Average Salary Excluding the Minimum and Maximum Salary	Java	Easy	Array, Sorting, Programming_Skills_I_Day_1_Basic_Data_Type	0	100.00
1489	Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree	Java	Hard	Sorting, Graph, Union_Find, Minimum_Spanning_Tree, Strongly_Connected_Component	17	100.00
1488	Avoid Flood in The City	Java	Medium	Array, Hash_Table, Greedy, Binary_Search, Heap_Priority_Queue, Binary_Search_II_Day_18	82	75.08
1487	Making File Names Unique	Java	Medium	Array, String, Hash_Table	36	98.46
1486	XOR Operation in an Array	Java	Easy	Math, Bit_Manipulation	0	100.00
1484	Group Sold Products By The Date	Sql	Easy	Database, SQL_I_Day_3_String_Processing_Functions	395	77.20
1483	Kth Ancestor of a Tree Node	Java	Hard	Dynamic_Programming, Depth_First_Search, Breadth_First_Search, Tree, Binary_Search, Design	60	93.28
1482	Minimum Number of Days to Make m Bouquets	Java	Medium	Array, Binary_Search, Binary_Search_II_Day_7	25	69.18
1481	Least Number of Unique Integers after K Removals	Java	Medium	Array, Hash_Table, Sorting, Greedy, Counting	62	85.33
1480	Running Sum of 1d Array	Java	Easy	Array, Prefix_Sum	0	100.00
1478	Allocate Mailboxes	Java	Hard	Array, Dynamic_Programming, Math, Sorting	12	78.87
1477	Find Two Non-overlapping Sub-arrays Each With Target Sum	Java	Medium	Array, Hash_Table, Dynamic_Programming, Binary_Search, Sliding_Window	8	89.43
1476	Subrectangle Queries	Java	Medium	Array, Matrix, Design	20	97.61
1475	Final Prices With a Special Discount in a Shop	Java	Easy	Array, Stack, Monotonic_Stack	2	80.33
1473	Paint House III	Java	Hard	Array, Dynamic_Programming	26	89.13
1472	Design Browser History	Java	Medium	Array, Stack, Design, Linked_List, Data_Stream, Doubly_Linked_List	76	82.33
1471	The k Strongest Values in an Array	Java	Medium	Array, Sorting, Two_Pointers	37	88.20
1470	Shuffle the Array	Java	Easy	Array	1	51.62
1467	Probability of a Two Boxes Having The Same Number of Distinct Balls	Java	Hard	Dynamic_Programming, Math, Backtracking, Combinatorics, Probability_and_Statistics	1	100.00
1466	Reorder Routes to Make All Paths Lead to the City Zero	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph, Graph_Theory_I_Day_10_Standard_Traversal	39	97.71
1465	Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts	Java	Medium	Array, Sorting, Greedy	21	35.40
1464	Maximum Product of Two Elements in an Array	Java	Easy	Array, Sorting, Heap_Priority_Queue	1	90.39
1463	Cherry Pickup II	Java	Hard	Array, Dynamic_Programming, Matrix	10	99.58
1462	Course Schedule IV	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort	10	100.00
1461	Check If a String Contains All Binary Codes of Size K	Java	Medium	String, Hash_Table, Bit_Manipulation, Hash_Function, Rolling_Hash	169	52.07
1460	Make Two Arrays Equal by Reversing Sub-arrays	Java	Easy	Array, Hash_Table, Sorting	13	14.65
1458	Max Dot Product of Two Subsequences	Java	Hard	Array, Dynamic_Programming	6	98.36
1457	Pseudo-Palindromic Paths in a Binary Tree	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Bit_Manipulation	35	43.73
1456	Maximum Number of Vowels in a Substring of Given Length	Java	Medium	String, Sliding_Window	19	53.73
1455	Check If a Word Occurs As a Prefix of Any Word in a Sentence	Java	Easy	String, String_Matching	1	32.08
1453	Maximum Number of Darts Inside of a Circular Dartboard	Java	Hard	Array, Math, Geometry	22	100.00
1452	People Whose List of Favorite Companies Is Not a Subset of Another List	Java	Medium	Array, String, Hash_Table	117	78.71
1451	Rearrange Words in a Sentence	Java	Medium	String, Sorting	21	89.94
1450	Number of Students Doing Homework at a Given Time	Java	Easy	Array	0	100.00
1449	Form Largest Integer With Digits That Add up to Target	Java	Hard	Array, Dynamic_Programming	8	77.46
1448	Count Good Nodes in Binary Tree	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	2	99.63
1447	Simplified Fractions	Java	Medium	String, Math, Number_Theory	33	69.60
1446	Consecutive Characters	Java	Easy	String	3	30.50
1444	Number of Ways of Cutting a Pizza	Java	Hard	Array, Dynamic_Programming, Matrix, Memoization	14	46.03
1443	Minimum Time to Collect All Apples in a Tree	Java	Medium	Hash_Table, Depth_First_Search, Breadth_First_Search, Tree	75	57.75
1442	Count Triplets That Can Form Two Arrays of Equal XOR	Java	Medium	Array, Hash_Table, Math, Bit_Manipulation, Prefix_Sum	2	79.80
1441	Build an Array With Stack Operations	Java	Easy	Array, Stack, Simulation	1	38.47
1439	Find the Kth Smallest Sum of a Matrix With Sorted Rows	Java	Hard	Array, Binary_Search, Matrix, Heap_Priority_Queue	40	75.79
1438	Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit	Java	Medium	Array, Heap_Priority_Queue, Sliding_Window, Ordered_Set, Queue, Monotonic_Queue	38	81.86
1437	Check If All 1's Are at Least Length K Places Away	Java	Easy	Array	2	73.75
1436	Destination City	Java	Easy	String, Hash_Table	7	11.79
1434	Number of Ways to Wear Different Hats to Each Other	Java	Hard	Array, Dynamic_Programming, Bit_Manipulation, Bitmask	31	77.92
1433	Check If a String Can Break Another String	Java	Medium	String, Sorting, Greedy	9	77.89
1432	Max Difference You Can Get From Changing an Integer	Java	Medium	Math, Greedy	1	97.22
1431	Kids With the Greatest Number of Candies	Java	Easy	Array	1	84.43
1425	Constrained Subsequence Sum	Java	Hard	Array, Dynamic_Programming, Heap_Priority_Queue, Sliding_Window, Queue, Monotonic_Queue	69	30.52
1424	Diagonal Traverse II	Java	Medium	Array, Sorting, Heap_Priority_Queue	39	85.56
1423	Maximum Points You Can Obtain from Cards	Java	Medium	Array, Prefix_Sum, Sliding_Window	4	31.70
1422	Maximum Score After Splitting a String	Java	Easy	String	1	96.45
1420	Build Array Where You Can Find The Maximum Exactly K Comparisons	Java	Hard	Dynamic_Programming	22	86.32
1419	Minimum Number of Frogs Croaking	Java	Medium	String, Counting	19	32.16
1418	Display Table of Food Orders in a Restaurant	Java	Medium	Array, String, Hash_Table, Sorting, Ordered_Set	42	77.01
1417	Reformat The String	Java	Easy	String	4	88.39
1416	Restore The Array	Java	Hard	String, Dynamic_Programming	34	100.00
1415	The k-th Lexicographical String of All Happy Strings of Length n	Java	Medium	String, Backtracking	2	90.55
1414	Find the Minimum Number of Fibonacci Numbers Whose Sum Is K	Java	Medium	Greedy	2	67.22
1413	Minimum Value to Get Positive Step by Step Sum	Java	Easy	Array, Prefix_Sum	0	100.00
1411	Number of Ways to Paint N × 3 Grid	Java	Hard	Dynamic_Programming	14	34.91
1410	HTML Entity Parser	Java	Medium	String, Hash_Table	19	98.92
1409	Queries on a Permutation With Key	Java	Medium	Array, Simulation, Binary_Indexed_Tree	15	38.43
1408	String Matching in an Array	Java	Easy	String, String_Matching	8	24.88
1407	Top Travellers	Sql	Easy	Database, SQL_I_Day_9_Control_of_Flow	682	70.16
1406	Stone Game III	Java	Hard	Array, Dynamic_Programming, Math, Game_Theory	14	82.02
1405	Longest Happy String	Java	Medium	String, Greedy, Heap_Priority_Queue	0	100.00
1404	Number of Steps to Reduce a Number in Binary Representation to One	Java	Medium	String, Bit_Manipulation	1	62.90
1403	Minimum Subsequence in Non-Increasing Order	Java	Easy	Array, Sorting, Greedy	4	79.60
1402	Reducing Dishes	Java	Hard	Array, Dynamic_Programming, Sorting, Greedy	3	66.20
1401	Circle and Rectangle Overlapping	Java	Medium	Math, Geometry	2	6.67
1400	Construct K Palindrome Strings	Java	Medium	String, Hash_Table, Greedy, Counting	5	94.62
1399	Count Largest Group	Java	Easy	Hash_Table, Math	3	98.21
1397	Find All Good Strings	Java	Hard	String, Dynamic_Programming, String_Matching	85	41.25
1396	Design Underground System	Java	Medium	String, Hash_Table, Design	89	89.64
1395	Count Number of Teams	Java	Medium	Array, Dynamic_Programming, Binary_Indexed_Tree	18	91.75
1394	Find Lucky Integer in an Array	Java	Easy	Array, Hash_Table, Counting	2	82.56
1393	Capital Gain/Loss	Sql	Medium	Database, SQL_I_Day_9_Control_of_Flow	457	79.39
1392	Longest Happy Prefix	Java	Hard	String, Hash_Function, String_Matching, Rolling_Hash	39	28.37
1391	Check if There is a Valid Path in a Grid	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find	14	85.37
1390	Four Divisors	Java	Medium	Array, Math	13	97.25
1389	Create Target Array in the Given Order	Java	Easy	Array, Simulation	0	100.00
1388	Pizza With 3n Slices	Java	Hard	Array, Dynamic_Programming, Greedy, Heap_Priority_Queue	5	93.33
1387	Sort Integers by The Power Value	Java	Medium	Dynamic_Programming, Sorting, Memoization	52	87.20
1386	Cinema Seat Allocation	Java	Medium	Array, Hash_Table, Greedy, Bit_Manipulation	32	69.41
1385	Find the Distance Value Between Two Arrays	Java	Easy	Array, Sorting, Binary_Search, Two_Pointers, Binary_Search_I_Day_3	5	65.78
1383	Maximum Performance of a Team	Java	Hard	Array, Sorting, Greedy, Heap_Priority_Queue	66	66.03
1382	Balance a Binary Search Tree	Java	Medium	Depth_First_Search, Greedy, Tree, Binary_Tree, Binary_Search_Tree, Divide_and_Conquer	5	65.24
1381	Design a Stack With Increment Operation	Java	Medium	Array, Stack, Design	8	62.23
1380	Lucky Numbers in a Matrix	Java	Easy	Array, Matrix	2	82.40
1379	Find a Corresponding Node of a Binary Tree in a Clone of That Tree	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	2	77.89
1377	Frog Position After T Seconds	Java	Hard	Depth_First_Search, Breadth_First_Search, Tree, Graph	6	81.30
1376	Time Needed to Inform All Employees	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Programming_Skills_II_Day_11, Graph_Theory_I_Day_9_Standard_Traversal	225	22.36
1375	Number of Times Binary String Is Prefix-Aligned	Java	Medium	Array	2	89.02
1374	Generate a String With Characters That Have Odd Counts	Java	Easy	String	1	90.52
1373	Maximum Sum BST in Binary Tree	Java	Hard	Dynamic_Programming, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree	15	47.56
1372	Longest ZigZag Path in a Binary Tree	Java	Medium	Dynamic_Programming, Depth_First_Search, Tree, Binary_Tree	9	64.47
1371	Find the Longest Substring Containing Vowels in Even Counts	Java	Medium	String, Hash_Table, Bit_Manipulation, Prefix_Sum	25	80.38
1370	Increasing Decreasing String	Java	Easy	String, Hash_Table, Counting	4	80.41
1368	Minimum Cost to Make at Least One Valid Path in a Grid	Java	Hard	Array, Breadth_First_Search, Matrix, Heap_Priority_Queue, Graph, Shortest_Path	8	99.38
1367	Linked List in Binary Tree	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Linked_List, Programming_Skills_II_Day_4	2	61.23
1366	Rank Teams by Votes	Java	Medium	Array, String, Hash_Table, Sorting, Counting	5	95.68
1365	How Many Numbers Are Smaller Than the Current Number	Java	Easy	Array, Hash_Table, Sorting, Counting	26	6.46
1363	Largest Multiple of Three	Java	Hard	Array, Dynamic_Programming, Greedy	5	84.67
1362	Closest Divisors	Java	Medium	Math	8	84.91
1361	Validate Binary Tree Nodes	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Graph, Union_Find	8	69.78
1360	Number of Days Between Two Dates	Java	Easy	String, Math	2	78.82
1359	Count All Valid Pickup and Delivery Options	Java	Hard	Dynamic_Programming, Math, Combinatorics	0	100.00
1358	Number of Substrings Containing All Three Characters	Java	Medium	String, Hash_Table, Sliding_Window	15	53.82
1357	Apply Discount Every n Orders	Java	Medium	Array, Hash_Table, Design	174	58.82
1356	Sort Integers by The Number of 1 Bits	Java	Easy	Array, Sorting, Bit_Manipulation, Counting, Programming_Skills_I_Day_11_Containers_&_Libraries	10	65.50
1354	Construct Target Array With Multiple Sums	Java	Hard	Array, Heap_Priority_Queue	2	100.00
1353	Maximum Number of Events That Can Be Attended	Java	Medium	Array, Greedy, Heap_Priority_Queue	70	21.66
1352	Product of the Last K Numbers	Java	Medium	Array, Math, Design, Queue, Data_Stream	24	60.43
1351	Count Negative Numbers in a Sorted Matrix	Java	Easy	Array, Binary_Search, Matrix, Binary_Search_I_Day_8	1	49.66
1349	Maximum Students Taking Exam	Java	Hard	Array, Dynamic_Programming, Matrix, Bit_Manipulation, Bitmask	4	76.98
1348	Tweet Counts Per Frequency	Java	Medium	Hash_Table, Sorting, Binary_Search, Design, Ordered_Set	86	99.44
1347	Minimum Number of Steps to Make Two Strings Anagram	Java	Medium	String, Hash_Table, Counting	13	76.34
1346	Check If N and Its Double Exist	Java	Easy	Array, Hash_Table, Sorting, Binary_Search, Two_Pointers, Binary_Search_I_Day_9	1	99.64
1345	Jump Game IV	Java	Hard	Array, Hash_Table, Breadth_First_Search	65	89.91
1344	Angle Between Hands of a Clock	Java	Medium	Math	0	100.00
1343	Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold	Java	Medium	Array, Sliding_Window	5	46.57
1342	Number of Steps to Reduce a Number to Zero	Java	Easy	Math, Bit_Manipulation	1	58.49
1340	Jump Game V	Java	Hard	Array, Dynamic_Programming, Sorting	13	71.33
1339	Maximum Product of Splitted Binary Tree	Java	Medium	Depth_First_Search, Tree, Binary_Tree	11	83.43
1338	Reduce Array Size to The Half	Java	Medium	Array, Hash_Table, Sorting, Greedy, Heap_Priority_Queue	61	73.82
1337	The K Weakest Rows in a Matrix	Java	Easy	Array, Sorting, Binary_Search, Matrix, Heap_Priority_Queue, Binary_Search_I_Day_9	1	99.77
1335	Minimum Difficulty of a Job Schedule	Java	Hard	Array, Dynamic_Programming	11	79.28
1334	Find the City With the Smallest Number of Neighbors at a Threshold Distance	Java	Medium	Dynamic_Programming, Graph, Shortest_Path	21	49.75
1333	Filter Restaurants by Vegan-Friendly, Price and Distance	Java	Medium	Array, Sorting	10	55.43
1332	Remove Palindromic Subsequences	Java	Easy	String, Two_Pointers	0	100.00
1331	Rank Transform of an Array	Java	Easy	Array, Hash_Table, Sorting	22	98.50
1330	Reverse Subarray To Maximize Array Value	Java	Hard	Array, Math, Greedy	9	88.00
1329	Sort the Matrix Diagonally	Java	Medium	Array, Sorting, Matrix	15	26.03
1328	Break a Palindrome	Java	Medium	String, Greedy	0	100.00
1326	Minimum Number of Taps to Open to Water a Garden	Java	Hard	Array, Dynamic_Programming, Greedy	3	90.04
1325	Delete Leaves With a Given Value	Java	Medium	Depth_First_Search, Tree, Binary_Tree	2	33.61
1324	Print Words Vertically	Java	Medium	Array, String, Simulation	1	90.59
1323	Maximum 69 Number	Java	Easy	Math, Greedy	3	32.03
1320	Minimum Distance to Type a Word Using Two Fingers	Java	Hard	String, Dynamic_Programming	16	82.29
1319	Number of Operations to Make Network Connected	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph, Union_Find, Graph_Theory_I_Day_8_Standard_Traversal	9	67.64
1318	Minimum Flips to Make a OR b Equal to c	Java	Medium	Bit_Manipulation	0	100.00
1317	Convert Integer to the Sum of Two No-Zero Integers	Java	Easy	Math	1	84.36
1316	Distinct Echo Substrings	Java	Hard	String, Dynamic_Programming, Sliding_Window, Trie, Hash_Function, Rolling_Hash	165	93.15
1315	Sum of Nodes with Even-Valued Grandparent	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	2	78.61
1314	Matrix Block Sum	Java	Medium	Array, Matrix, Prefix_Sum, Dynamic_Programming_I_Day_14	5	67.46
1313	Decompress Run-Length Encoded List	Java	Easy	Array	11	10.55
1312	Minimum Insertion Steps to Make a String Palindrome	Java	Hard	String, Dynamic_Programming	25	85.70
1311	Get Watched Videos by Your Friends	Java	Medium	Array, Hash_Table, Sorting, Breadth_First_Search	39	73.81
1310	XOR Queries of a Subarray	Java	Medium	Array, Bit_Manipulation, Prefix_Sum	3	68.91
1309	Decrypt String from Alphabet to Integer Mapping	Java	Easy	String, Programming_Skills_I_Day_9_String	6	28.25
1307	Verbal Arithmetic Puzzle	Java	Hard	Array, String, Math, Backtracking	6	95.74
1306	Jump Game III	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Graph_Theory_I_Day_11_Breadth_First_Search	2	96.23
1305	All Elements in Two Binary Search Trees	Java	Medium	Depth_First_Search, Sorting, Tree, Binary_Tree, Binary_Search_Tree	25	63.82
1304	Find N Unique Integers Sum up to Zero	Java	Easy	Array, Math	0	100.00
1302	Deepest Leaves Sum	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	5	59.50
1301	Number of Paths with Max Score	Java	Hard	Array, Dynamic_Programming, Matrix	14	72.31
1300	Sum of Mutated Array Closest to Target	Java	Medium	Array, Sorting, Binary_Search, Binary_Search_II_Day_16	7	33.33
1299	Replace Elements with Greatest Element on Right Side	Java	Easy	Array	1	99.82
1298	Maximum Candies You Can Get from Boxes	Java	Hard	Array, Breadth_First_Search	3	100.00
1297	Maximum Number of Occurrences of a Substring	Java	Medium	String, Hash_Table, Sliding_Window	42	90.85
1296	Divide Array in Sets of K Consecutive Numbers	Java	Medium	Array, Hash_Table, Sorting, Greedy	39	97.80
1295	Find Numbers with Even Number of Digits	Java	Easy	Array	2	58.23
1293	Shortest Path in a Grid with Obstacles Elimination	Java	Hard	Array, Breadth_First_Search, Matrix	35	63.17
1292	Maximum Side Length of a Square with Sum Less than or Equal to Threshold	Java	Medium	Array, Binary_Search, Matrix, Prefix_Sum, Binary_Search_II_Day_15	23	32.97
1291	Sequential Digits	Java	Medium	Enumeration	0	100.00
1290	Convert Binary Number in a Linked List to Integer	Java	Easy	Math, Linked_List, Programming_Skills_I_Day_10_Linked_List_&_Tree	0	100.00
1289	Minimum Falling Path Sum II	Java	Hard	Array, Dynamic_Programming, Matrix	2	99.45
1288	Remove Covered Intervals	Java	Medium	Array, Sorting	6	78.87
1287	Element Appearing More Than 25% In Sorted Array	Java	Easy	Array	0	100.00
1286	Iterator for Combination	Java	Medium	String, Design, Backtracking, Iterator	10	95.00
1284	Minimum Number of Flips to Convert Binary Matrix to Zero Matrix	Java	Hard	Array, Breadth_First_Search, Matrix, Bit_Manipulation	2	89.29
1283	Find the Smallest Divisor Given a Threshold	Java	Medium	Array, Binary_Search, Binary_Search_II_Day_5	9	95.49
1282	Group the People Given the Group Size They Belong To	Java	Medium	Array, Hash_Table	6	79.04
1281	Subtract the Product and Sum of Digits of an Integer	Java	Easy	Math, Programming_Skills_I_Day_2_Operator	0	100.00
1278	Palindrome Partitioning III	Java	Hard	String, Dynamic_Programming	4	89.93
1277	Count Square Submatrices with All Ones	Java	Medium	Array, Dynamic_Programming, Matrix	5	95.33
1276	Number of Burgers with No Waste of Ingredients	Java	Medium	Math	2	87.88
1275	Find Winner on a Tic Tac Toe Game	Java	Easy	Array, Hash_Table, Matrix, Simulation	0	100.00
1269	Number of Ways to Stay in the Same Place After Some Steps	Java	Hard	Dynamic_Programming	12	89.11
1268	Search Suggestions System	Java	Medium	Array, String, Trie	28	78.06
1267	Count Servers that Communicate	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Matrix, Counting, Union_Find	5	41.00
1266	Minimum Time Visiting All Points	Java	Easy	Array, Math, Geometry	1	80.97
1263	Minimum Moves to Move a Box to Their Target Location	Java	Hard	Array, Breadth_First_Search, Matrix, Heap_Priority_Queue	16	76.00
1262	Greatest Sum Divisible by Three	Java	Medium	Array, Dynamic_Programming, Greedy	5	95.82
1261	Find Elements in a Contaminated Binary Tree	Java	Medium	Hash_Table, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Design	24	84.00
1260	Shift 2D Grid	Java	Easy	Array, Matrix, Simulation	17	14.82
1255	Maximum Score Words Formed by Letters	Java	Hard	Array, String, Dynamic_Programming, Bit_Manipulation, Backtracking, Bitmask	1	98.36
1254	Number of Closed Islands	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Graph_Theory_I_Day_2_Matrix_Related_Problems	3	55.59
1253	Reconstruct a 2-Row Binary Matrix	Java	Medium	Array, Greedy, Matrix	18	57.27
1252	Cells with Odd Values in a Matrix	Java	Easy	Array, Math, Simulation	1	87.47
1250	Check If It Is a Good Array	Java	Hard	Array, Math, Number_Theory	4	58.82
1249	Minimum Remove to Make Valid Parentheses	Java	Medium	String, Stack, Data_Structure_II_Day_14_Stack_Queue	13	94.62
1248	Count Number of Nice Subarrays	Java	Medium	Array, Hash_Table, Math, Sliding_Window	14	69.78
1247	Minimum Swaps to Make Strings Equal	Java	Medium	String, Math, Greedy	1	79.83
1240	Tiling a Rectangle with the Fewest Squares	Java	Hard	Dynamic_Programming, Backtracking	3	62.18
1239	Maximum Length of a Concatenated String with Unique Characters	Java	Medium	Array, String, Bit_Manipulation, Backtracking	9	88.28
1238	Circular Permutation in Binary Representation	Java	Medium	Math, Bit_Manipulation, Backtracking	4	100.00
1237	Find Positive Integer Solution for a Given Equation	Java	Medium	Math, Binary_Search, Two_Pointers, Interactive	2	79.60
1235	Maximum Profit in Job Scheduling	Java	Hard	Array, Dynamic_Programming, Sorting, Binary_Search	27	89.19
1234	Replace the Substring for Balanced String	Java	Medium	String, Sliding_Window	7	89.84
1233	Remove Sub-Folders from the Filesystem	Java	Medium	Array, String, Trie	32	96.54
1232	Check If It Is a Straight Line	Java	Easy	Array, Math, Geometry, Programming_Skills_I_Day_5_Function	0	100.00
1227	Airplane Seat Assignment Probability	Java	Medium	Dynamic_Programming, Math, Brainteaser, Probability_and_Statistics	1	15.63
1226	The Dining Philosophers	Java	Medium	Concurrency	10	83.56
1224	Maximum Equal Frequency	Java	Hard	Array, Hash_Table	17	93.59
1223	Dice Roll Simulation	Java	Hard	Array, Dynamic_Programming	9	90.98
1222	Queens That Can Attack the King	Java	Medium	Array, Matrix, Simulation	1	89.88
1221	Split a String in Balanced Strings	Java	Easy	String, Greedy, Counting	1	53.71
1220	Count Vowels Permutation	Java	Hard	Dynamic_Programming	7	98.50
1219	Path with Maximum Gold	Java	Medium	Array, Matrix, Backtracking	48	57.00
1218	Longest Arithmetic Subsequence of Given Difference	Java	Medium	Array, Hash_Table, Dynamic_Programming	11	98.23
1217	Minimum Cost to Move Chips to The Same Position	Java	Easy	Array, Math, Greedy	0	100.00
1210	Minimum Moves to Reach Target with Rotations	Java	Hard	Array, Breadth_First_Search, Matrix	29	78.57
1209	Remove All Adjacent Duplicates in String II	Java	Medium	String, Stack	15	88.34
1208	Get Equal Substrings Within Budget	Java	Medium	String, Binary_Search, Prefix_Sum, Sliding_Window	7	73.41
1207	Unique Number of Occurrences	Java	Easy	Array, Hash_Table	8	5.98
1206	Design Skiplist	Java	Hard	Design, Linked_List	14	96.71
1203	Sort Items by Groups Respecting Dependencies	Java	Hard	Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort	44	88.89
1202	Smallest String With Swaps	Java	Medium	String, Hash_Table, Depth_First_Search, Breadth_First_Search, Union_Find	43	86.82
1201	Ugly Number III	Java	Medium	Math, Binary_Search, Number_Theory, Binary_Search_II_Day_20	0	100.00
1200	Minimum Absolute Difference	Java	Easy	Array, Sorting	14	98.30
1195	Fizz Buzz Multithreaded	Java	Medium	Concurrency	8	80.09
1192	Critical Connections in a Network	Java	Hard	Depth_First_Search, Graph, Biconnected_Component	127	89.39
1191	K-Concatenation Maximum Sum	Java	Medium	Array, Dynamic_Programming	6	73.85
1190	Reverse Substrings Between Each Pair of Parentheses	Java	Medium	String, Stack	1	98.26
1189	Maximum Number of Balloons	Java	Easy	String, Hash_Table, Counting	3	68.13
1187	Make Array Strictly Increasing	Java	Hard	Array, Dynamic_Programming, Binary_Search	33	95.51
1186	Maximum Subarray Sum with One Deletion	Java	Medium	Array, Dynamic_Programming	3	94.48
1185	Day of the Week	Java	Easy	Math	0	100.00
1184	Distance Between Bus Stops	Java	Easy	Array	0	100.00
1179	Reformat Department Table	Sql	Easy	Database	493	64.80
1178	Number of Valid Words for Each Puzzle	Java	Hard	Array, String, Hash_Table, Bit_Manipulation, Trie	139	48.41
1177	Can Make Palindrome from Substring	Java	Medium	String, Hash_Table, Bit_Manipulation, Prefix_Sum	13	93.08
1175	Prime Arrangements	Java	Easy	Math	6	10.00
1172	Dinner Plate Stacks	Java	Hard	Hash_Table, Stack, Design, Heap_Priority_Queue	63	96.74
1171	Remove Zero Sum Consecutive Nodes from Linked List	Java	Medium	Hash_Table, Linked_List	2	90.39
1170	Compare Strings by Frequency of the Smallest Character	Java	Medium	Array, String, Hash_Table, Sorting, Binary_Search	7	57.89
1169	Invalid Transactions	Java	Medium	Array, String, Hash_Table, Sorting	11	89.89
1163	Last Substring in Lexicographical Order	Java	Hard	String, Two_Pointers	12	96.43
1162	As Far from Land as Possible	Java	Medium	Array, Dynamic_Programming, Breadth_First_Search, Matrix, Graph_Theory_I_Day_4_Matrix_Related_Problems	12	89.17
1161	Maximum Level Sum of a Binary Tree	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	9	78.65
1160	Find Words That Can Be Formed by Characters	Java	Easy	Array, String, Hash_Table	53	30.13
1158	Market Analysis I	Sql	Medium	Database, SQL_I_Day_9_Control_of_Flow	1039	77.70
1157	Online Majority Element In Subarray	Java	Hard	Array, Binary_Search, Design, Segment_Tree, Binary_Indexed_Tree	56	100.00
1156	Swap For Longest Repeated Character Substring	Java	Medium	String, Sliding_Window	22	15.79
1155	Number of Dice Rolls With Target Sum	Java	Medium	Dynamic_Programming	17	78.89
1154	Day of the Year	Java	Easy	String, Math	9	95.40
1148	Article Views I	Sql	Easy	Database, SQL_I_Day_5_Union	459	44.85
1147	Longest Chunked Palindrome Decomposition	Java	Hard	String, Dynamic_Programming, Greedy, Two_Pointers, Hash_Function, Rolling_Hash	11	44.95
1146	Snapshot Array	Java	Medium	Array, Hash_Table, Binary_Search, Design, Binary_Search_II_Day_18	37	87.93
1145	Binary Tree Coloring Game	Java	Medium	Depth_First_Search, Tree, Binary_Tree	0	100.00
1144	Decrease Elements To Make Array Zigzag	Java	Medium	Array, Greedy	0	100.00
1143	Longest Common Subsequence	Java	Medium	String, Dynamic_Programming, Algorithm_II_Day_17_Dynamic_Programming, Dynamic_Programming_I_Day_19	9	93.92
1141	User Activity for the Past 30 Days I	Sql	Easy	Database, SQL_I_Day_7_Function	543	29.24
1140	Stone Game II	Java	Medium	Array, Dynamic_Programming, Math, Game_Theory	7	68.62
1139	Largest 1-Bordered Square	Java	Medium	Array, Dynamic_Programming, Matrix	8	53.28
1138	Alphabet Board Path	Java	Medium	String, Hash_Table	1	76.10
1137	N-th Tribonacci Number	Java	Easy	Dynamic_Programming, Math, Memoization, Dynamic_Programming_I_Day_1	0	100.00
1131	Maximum of Absolute Value Expression	Java	Medium	Array, Math	8	60.95
1130	Minimum Cost Tree From Leaf Values	Java	Medium	Dynamic_Programming, Greedy, Stack, Monotonic_Stack	2	82.90
1129	Shortest Path with Alternating Colors	Java	Medium	Breadth_First_Search, Graph, Graph_Theory_I_Day_10_Standard_Traversal	5	90.28
1128	Number of Equivalent Domino Pairs	Java	Easy	Array, Hash_Table, Counting	10	69.88
1125	Smallest Sufficient Team	Java	Hard	Array, Dynamic_Programming, Bit_Manipulation, Bitmask	3	98.82
1124	Longest Well-Performing Interval	Java	Medium	Array, Hash_Table, Stack, Prefix_Sum, Monotonic_Stack	13	71.38
1123	Lowest Common Ancestor of Deepest Leaves	Java	Medium	Hash_Table, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	1	76.02
1122	Relative Sort Array	Java	Easy	Array, Hash_Table, Sorting, Counting_Sort	0	100.00
1117	Building H2O	Java	Medium	Concurrency	12	93.81
1116	Print Zero Even Odd	Java	Medium	Concurrency	5	99.83
1115	Print FooBar Alternately	Java	Medium	Concurrency	16	90.05
1114	Print in Order	Java	Easy	Concurrency	16	77.21
1111	Maximum Nesting Depth of Two Valid Parentheses Strings	Java	Medium	String, Stack	1	99.73
1110	Delete Nodes And Return Forest	Java	Medium	Depth_First_Search, Tree, Binary_Tree	5	15.90
1109	Corporate Flight Bookings	Java	Medium	Array, Prefix_Sum	3	87.75
1108	Defanging an IP Address	Java	Easy	String	0	100.00
1106	Parsing A Boolean Expression	Java	Hard	String, Stack, Recursion	3	93.78
1105	Filling Bookcase Shelves	Java	Medium	Array, Dynamic_Programming	4	23.85
1104	Path In Zigzag Labelled Binary Tree	Java	Medium	Math, Tree, Binary_Tree	1	58.50
1103	Distribute Candies to People	Java	Easy	Math, Simulation	2	49.07
1096	Brace Expansion II	Java	Hard	String, Breadth_First_Search, Stack, Backtracking	23	60.36
1095	Find in Mountain Array	Java
1093	Statistics from a Large Sample	Java	Medium	Math, Two_Pointers, Probability_and_Statistics	1	86.00
1092	Shortest Common Supersequence	Java	Hard	String, Dynamic_Programming	10	96.12
1091	Shortest Path in Binary Matrix	Java	Medium	Array, Breadth_First_Search, Matrix, Algorithm_II_Day_8_Breadth_First_Search_Depth_First_Search, Graph_Theory_I_Day_5_Matrix_Related_Problems	22	69.99
1090	Largest Values From Labels	Java	Medium	Array, Hash_Table, Sorting, Greedy, Counting	14	95.96
1089	Duplicate Zeros	Java	Easy	Array, Two_Pointers	2	67.91
1084	Sales Analysis III	Sql	Easy	Database, SQL_I_Day_10_Where	1066	69.71
1081	Smallest Subsequence of Distinct Characters	Java	Medium	String, Greedy, Stack, Monotonic_Stack	2	97.16
1080	Insufficient Nodes in Root to Leaf Paths	Java	Medium	Depth_First_Search, Tree, Binary_Tree	1	76.12
1079	Letter Tile Possibilities	Java	Medium	String, Backtracking	3	86.86
1078	Occurrences After Bigram	Java	Easy	String	0	100.00
1074	Number of Submatrices That Sum to Target	Java	Hard	Array, Hash_Table, Matrix, Prefix_Sum	171	68.35
1073	Adding Two Negabinary Numbers	Java	Medium	Array, Math	1	100.00
1072	Flip Columns For Maximum Number of Equal Rows	Java	Medium	Array, Hash_Table, Matrix	26	95.71
1071	Greatest Common Divisor of Strings	Java	Easy	String, Math	1	82.09
1054	Distant Barcodes	Java	Medium	Array, Hash_Table, Sorting, Greedy, Heap_Priority_Queue, Counting	45	64.21
1053	Previous Permutation With One Swap	Java	Medium	Array, Greedy	0	100.00
1052	Grumpy Bookstore Owner	Java	Medium	Array, Sliding_Window	4	70.26
1051	Height Checker	Java	Easy	Array, Sorting, Counting_Sort	1	94.01
1050	Actors and Directors Who Cooperated At Least Three Times	Sql	Easy	Database, SQL_I_Day_10_Where	344	76.48
1049	Last Stone Weight II	Java	Medium	Array, Dynamic_Programming	2	95.98
1048	Longest String Chain	Java	Medium	Array, String, Hash_Table, Dynamic_Programming, Two_Pointers	23	97.92
1047	Remove All Adjacent Duplicates In String	Java	Easy	String, Stack	3	99.99
1046	Last Stone Weight	Java	Easy	Array, Heap_Priority_Queue	2	73.81
1044	Longest Duplicate Substring	Java	Hard	String, Binary_Search, Sliding_Window, Hash_Function, Rolling_Hash, Suffix_Array	447	62.53
1043	Partition Array for Maximum Sum	Java	Medium	Array, Dynamic_Programming	5	90.43
1042	Flower Planting With No Adjacent	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph	19	89.02
1041	Robot Bounded In Circle	Java	Medium	String, Math, Simulation	0	100.00
1040	Moving Stones Until Consecutive II	Java	Medium	Array, Math, Sorting, Two_Pointers	8	55.00
1039	Minimum Score Triangulation of Polygon	Java	Medium	Array, Dynamic_Programming	6	38.60
1038	Binary Search Tree to Greater Sum Tree	Java	Medium	Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree	0	100.00
1037	Valid Boomerang	Java	Easy	Math, Geometry	0	100.00
1036	Escape a Large Maze	Java	Hard	Array, Hash_Table, Depth_First_Search, Breadth_First_Search	115	73.46
1035	Uncrossed Lines	Java	Medium	Array, Dynamic_Programming	5	85.32
1034	Coloring A Border	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Matrix	1	93.85
1033	Moving Stones Until Consecutive	Java	Medium	Math, Brainteaser	1	86.36
1032	Stream of Characters	Java	Hard	Array, String, Design, Trie, Data_Stream	137	81.54
1031	Maximum Sum of Two Non-Overlapping Subarrays	Java	Medium	Array, Dynamic_Programming, Sliding_Window	3	46.04
1030	Matrix Cells in Distance Order	Java	Easy	Array, Math, Sorting, Matrix, Geometry	15	69.74
1029	Two City Scheduling	Java	Medium	Array, Sorting, Greedy	1	97.54
1028	Recover a Tree From Preorder Traversal	Java	Hard	String, Depth_First_Search, Tree, Binary_Tree	5	77.57
1027	Longest Arithmetic Subsequence	Java	Medium	Array, Hash_Table, Dynamic_Programming, Binary_Search	47	98.28
1026	Maximum Difference Between Node and Ancestor	Java	Medium	Depth_First_Search, Tree, Binary_Tree	1	65.84
1025	Divisor Game	Java	Easy	Dynamic_Programming, Math, Game_Theory, Brainteaser	0	100.00
1024	Video Stitching	Java	Medium	Array, Dynamic_Programming, Greedy	1	88.78
1023	Camelcase Matching	Java	Medium	String, Two_Pointers, Trie, String_Matching	1	73.86
1022	Sum of Root To Leaf Binary Numbers	Java	Easy	Depth_First_Search, Tree, Binary_Tree	3	28.58
1021	Remove Outermost Parentheses	Java	Easy	String, Stack	4	75.39
1020	Number of Enclaves	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Graph_Theory_I_Day_3_Matrix_Related_Problems	6	68.24
1019	Next Greater Node In Linked List	Java	Medium	Array, Stack, Linked_List, Monotonic_Stack	11	96.35
1018	Binary Prefix Divisible By 5	Java	Easy	Array	3	84.58
1017	Convert to Base -2	Java	Medium	Math	2	34.15
1016	Binary String With Substrings Representing 1 To N	Java	Medium	String	0	100.00
1015	Smallest Integer Divisible by K	Java	Medium	Hash_Table, Math	2	90.67
1014	Best Sightseeing Pair	Java	Medium	Array, Dynamic_Programming, Dynamic_Programming_I_Day_7	2	99.86
1013	Partition Array Into Three Parts With Equal Sum	Java	Easy	Array, Greedy	3	53.27
1012	Numbers With Repeated Digits	Java	Hard	Dynamic_Programming, Math	3	28.17
1011	Capacity To Ship Packages Within D Days	Java	Medium	Array, Greedy, Binary_Search	10	75.31
1010	Pairs of Songs With Total Durations Divisible by 60	Java	Medium	Array, Hash_Table, Counting	4	64.39
1009	Complement of Base 10 Integer	Java	Easy	Bit_Manipulation	1	41.56
1008	Construct Binary Search Tree from Preorder Traversal	Java	Medium	Array, Tree, Binary_Tree, Stack, Monotonic_Stack, Binary_Search_Tree	0	100.00
1007	Minimum Domino Rotations For Equal Row	Java	Medium	Array, Greedy	5	79.64
1006	Clumsy Factorial	Java	Medium	Math, Stack, Simulation	1	87.97
1005	Maximize Sum Of Array After K Negations	Java	Easy	Array, Sorting, Greedy	3	81.75
1004	Max Consecutive Ones III	Java	Medium	Array, Binary_Search, Prefix_Sum, Sliding_Window	3	79.01
1003	Check If Word Is Valid After Substitutions	Java	Medium	String, Stack	5	98.54
1002	Find Common Characters	Java	Easy	Array, String, Hash_Table	4	83.51
1001	Grid Illumination	Java	Hard	Array, Hash_Table	75	90.57
1000	Minimum Cost to Merge Stones	Java	Hard	Array, Dynamic_Programming	1	99.65
0999	Available Captures for Rook	Java	Easy	Array, Matrix, Simulation	0	100.00
0998	Maximum Binary Tree II	Java	Medium	Tree, Binary_Tree	0	100.00
0997	Find the Town Judge	Java	Easy	Array, Hash_Table, Graph, Data_Structure_II_Day_19_Graph, Graph_Theory_I_Day_13_Graph_Theory	3	80.64
0996	Number of Squareful Arrays	Java	Hard	Array, Dynamic_Programming, Math, Bit_Manipulation, Backtracking, Bitmask	2	72.32
0995	Minimum Number of K Consecutive Bit Flips	Java	Hard	Array, Bit_Manipulation, Prefix_Sum, Sliding_Window	6	93.95
0994	Rotting Oranges	Java	Medium	Array, Breadth_First_Search, Matrix, Algorithm_I_Day_9_Breadth_First_Search_Depth_First_Search	3	74.27
0993	Cousins in Binary Tree	Java	Easy	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	1	60.08
0992	Subarrays with K Different Integers	Java	Hard	Array, Hash_Table, Counting, Sliding_Window	4	99.36
0991	Broken Calculator	Java	Medium	Math, Greedy	0	100.00
0990	Satisfiability of Equality Equations	Java	Medium	Array, String, Graph, Union_Find	5	24.79
0989	Add to Array-Form of Integer	Java	Easy	Array, Math, Programming_Skills_II_Day_5	7	65.92
0988	Smallest String Starting From Leaf	Java	Medium	String, Depth_First_Search, Tree, Binary_Tree	4	58.47
0987	Vertical Order Traversal of a Binary Tree	Java	Hard	Hash_Table, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	4	71.48
0986	Interval List Intersections	Java	Medium	Array, Two_Pointers, Algorithm_II_Day_4_Two_Pointers	2	99.95
0985	Sum of Even Numbers After Queries	Java	Medium	Array, Simulation	6	71.11
0984	String Without AAA or BBB	Java	Medium	String, Greedy	0	100.00
0983	Minimum Cost For Tickets	Java	Medium	Array, Dynamic_Programming	1	93.95
0982	Triples with Bitwise AND Equal To Zero	Java	Hard	Array, Hash_Table, Bit_Manipulation	120	79.59
0981	Time Based Key-Value Store	Java	Medium	String, Hash_Table, Binary_Search, Design, Binary_Search_II_Day_16	239	72.78
0980	Unique Paths III	Java	Hard	Array, Matrix, Bit_Manipulation, Backtracking	0	100.00
0979	Distribute Coins in Binary Tree	Java	Medium	Depth_First_Search, Tree, Binary_Tree	0	100.00
0978	Longest Turbulent Subarray	Java	Medium	Array, Dynamic_Programming, Sliding_Window	7	48.10
0977	Squares of a Sorted Array	Java	Easy	Array, Sorting, Two_Pointers, Algorithm_I_Day_2_Two_Pointers	1	100.00
0976	Largest Perimeter Triangle	Java	Easy	Array, Math, Sorting, Greedy, Programming_Skills_I_Day_3_Conditional_Statements	12	26.01
0975	Odd Even Jump	Java	Hard	Array, Dynamic_Programming, Stack, Ordered_Set, Monotonic_Stack	49	98.38
0974	Subarray Sums Divisible by K	Java	Medium	Array, Hash_Table, Prefix_Sum	3	99.95
0973	K Closest Points to Origin	Java	Medium	Array, Math, Sorting, Heap_Priority_Queue, Divide_and_Conquer, Geometry, Quickselect, Data_Structure_II_Day_21_Heap_Priority_Queue, Programming_Skills_II_Day_8	4	98.26
0972	Equal Rational Numbers	Java	Hard	String, Math	4	56.67
0971	Flip Binary Tree To Match Preorder Traversal	Java	Medium	Depth_First_Search, Tree, Binary_Tree	0	100.00
0970	Powerful Integers	Java	Medium	Hash_Table, Math	1	100.00
0969	Pancake Sorting	Java	Medium	Array, Sorting, Greedy, Two_Pointers	1	100.00
0968	Binary Tree Cameras	Java	Hard	Dynamic_Programming, Depth_First_Search, Tree, Binary_Tree	0	100.00
0967	Numbers With Same Consecutive Differences	Java	Medium	Breadth_First_Search, Backtracking	1	100.00
0966	Vowel Spellchecker	Java	Medium	Array, String, Hash_Table	17	98.95
0965	Univalued Binary Tree	Java	Easy	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	1	17.57
0964	Least Operators to Express Number	Java	Hard	Dynamic_Programming, Math	16	37.78
0963	Minimum Area Rectangle II	Java	Medium	Array, Math, Geometry	12	92.95
0962	Maximum Width Ramp	Java	Medium	Array, Stack, Monotonic_Stack	6	90.69
0961	N-Repeated Element in Size 2N Array	Java	Easy	Array, Hash_Table	1	87.33
0960	Delete Columns to Make Sorted III	Java	Hard	Array, String, Dynamic_Programming	13	43.86
0959	Regions Cut By Slashes	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph, Union_Find	9	39.29
0958	Check Completeness of a Binary Tree	Java	Medium	Breadth_First_Search, Tree, Binary_Tree	2	43.56
0957	Prison Cells After N Days	Java	Medium	Array, Hash_Table, Math, Bit_Manipulation	1	97.82
0956	Tallest Billboard	Java	Hard	Array, Dynamic_Programming	18	92.68
0955	Delete Columns to Make Sorted II	Java	Medium	Array, String, Greedy	2	68.84
0954	Array of Doubled Pairs	Java	Medium	Array, Hash_Table, Sorting, Greedy	18	97.19
0953	Verifying an Alien Dictionary	Java	Easy	Array, String, Hash_Table, Programming_Skills_I_Day_9_String	0	100.00
0952	Largest Component Size by Common Factor	Java	Hard	Array, Math, Union_Find	225	76.99
0951	Flip Equivalent Binary Trees	Java	Medium	Depth_First_Search, Tree, Binary_Tree	0	100.00
0950	Reveal Cards In Increasing Order	Java	Medium	Array, Sorting, Simulation, Queue	1	100.00
0949	Largest Time for Given Digits	Java	Medium	String, Enumeration	3	91.21
0948	Bag of Tokens	Java	Medium	Array, Sorting, Greedy, Two_Pointers	4	32.05
0947	Most Stones Removed with Same Row or Column	Java	Medium	Depth_First_Search, Graph, Union_Find	5	98.95
0946	Validate Stack Sequences	Java	Medium	Array, Stack, Simulation	6	20.54
0945	Minimum Increment to Make Array Unique	Java	Medium	Array, Sorting, Greedy, Counting	9	95.25
0944	Delete Columns to Make Sorted	Java	Easy	Array, String	11	59.39
0943	Find the Shortest Superstring	Java	Hard	Array, String, Dynamic_Programming, Bit_Manipulation, Bitmask	16	100.00
0942	DI String Match	Java	Easy	Array, String, Math, Greedy, Two_Pointers	4	33.74
0941	Valid Mountain Array	Java	Easy	Array	1	100.00
0940	Distinct Subsequences II	Java	Hard	String, Dynamic_Programming	2	99.41
0939	Minimum Area Rectangle	Java	Medium	Array, Hash_Table, Math, Sorting, Geometry	63	94.31
0938	Range Sum of BST	Java	Easy	Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree	0	100.00
0937	Reorder Data in Log Files	Java	Easy	Array, String, Sorting	4	92.15
0936	Stamping The Sequence	Java	Hard	String, Greedy, Stack, Queue	6	78.43
0935	Knight Dialer	Java	Medium	Dynamic_Programming	4	99.08
0934	Shortest Bridge	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Matrix, Graph_Theory_I_Day_6_Matrix_Related_Problems	6	97.87
0933	Number of Recent Calls	Java	Easy	Design, Queue, Data_Stream	16	97.58
0932	Beautiful Array	Java	Medium	Array, Math, Divide_and_Conquer	1	89.66
0931	Minimum Falling Path Sum	Java	Medium	Array, Dynamic_Programming, Matrix, Dynamic_Programming_I_Day_13	4	72.19
0930	Binary Subarrays With Sum	Java	Medium	Array, Hash_Table, Prefix_Sum, Sliding_Window	3	84.84
0929	Unique Email Addresses	Java	Easy	Array, String, Hash_Table	10	92.59
0928	Minimize Malware Spread II	Java	Hard	Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find	41	31.01
0927	Three Equal Parts	Java	Hard	Array, Math	2	90.20
0926	Flip String to Monotone Increasing	Java	Medium	String, Dynamic_Programming	12	63.41
0925	Long Pressed Name	Java	Easy	String, Two_Pointers	1	84.87
0924	Minimize Malware Spread	Java	Hard	Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find	127	5.44
0923	3Sum With Multiplicity	Java	Medium	Array, Hash_Table, Sorting, Two_Pointers, Counting	14	69.20
0922	Sort Array By Parity II	Java	Easy	Array, Sorting, Two_Pointers	4	52.95
0921	Minimum Add to Make Parentheses Valid	Java	Medium	String, Greedy, Stack	2	33.69
0920	Number of Music Playlists	Java	Hard	Dynamic_Programming, Math, Combinatorics	2	96.55
0919	Complete Binary Tree Inserter	Java	Medium	Breadth_First_Search, Tree, Binary_Tree, Design	11	96.06
0918	Maximum Sum Circular Subarray	Java	Medium	Array, Dynamic_Programming, Divide_and_Conquer, Queue, Monotonic_Queue, Dynamic_Programming_I_Day_5	3	92.86
0917	Reverse Only Letters	Java	Easy	String, Two_Pointers	0	100.00
0916	Word Subsets	Java	Medium	Array, String, Hash_Table	30	57.30
0915	Partition Array into Disjoint Intervals	Java	Medium	Array	2	99.81
0914	X of a Kind in a Deck of Cards	Java	Easy	Array, Hash_Table, Math, Counting, Number_Theory	16	19.29
0913	Cat and Mouse	Java	Hard	Dynamic_Programming, Math, Breadth_First_Search, Graph, Memoization, Game_Theory	16	97.20
0912	Sort an Array	Java	Medium	Array, Sorting, Heap_Priority_Queue, Divide_and_Conquer, Merge_Sort, Bucket_Sort, Counting_Sort, Radix_Sort	25	38.15
0911	Online Election	Java	Medium	Array, Hash_Table, Binary_Search, Design, Binary_Search_II_Day_20	63	98.81
0910	Smallest Range II	Java	Medium	Array, Math, Sorting, Greedy, Programming_Skills_II_Day_13	10	73.16
0909	Snakes and Ladders	Java	Medium	Array, Breadth_First_Search, Matrix	7	79.52
0908	Smallest Range I	Java	Easy	Array, Math	2	88.84
0907	Sum of Subarray Minimums	Java	Medium	Array, Dynamic_Programming, Stack, Monotonic_Stack	20	95.88
0906	Super Palindromes	Java	Hard	Math, Enumeration	229	91.38
0905	Sort Array By Parity	Java	Easy	Array, Sorting, Two_Pointers	1	95.51
0904	Fruit Into Baskets	Java	Medium	Array, Hash_Table, Sliding_Window	6	95.60
0903	Valid Permutations for DI Sequence	Java	Hard	Dynamic_Programming	3	74.00
0902	Numbers At Most N Given Digit Set	Java	Hard	Array, Dynamic_Programming, Math, Binary_Search	2	18.29
0901	Online Stock Span	Java	Medium	Stack, Design, Monotonic_Stack, Data_Stream	47	76.17
0900	RLE Iterator	Java	Medium	Array, Design, Counting, Iterator	3	100.00
0899	Orderly Queue	Java	Hard	String, Math, Sorting	1	100.00
0898	Bitwise ORs of Subarrays	Java	Medium	Array, Dynamic_Programming, Bit_Manipulation	151	97.74
0897	Increasing Order Search Tree	Java	Easy	Depth_First_Search, Tree, Binary_Tree, Stack, Binary_Search_Tree	0	100.00
0896	Monotonic Array	Java	Easy	Array, Programming_Skills_II_Day_1	2	86.21
0895	Maximum Frequency Stack	Java	Hard	Hash_Table, Stack, Design, Ordered_Set	43	65.81
0894	All Possible Full Binary Trees	Java	Medium	Dynamic_Programming, Tree, Binary_Tree, Recursion, Memoization	3	68.56
0893	Groups of Special-Equivalent Strings	Java	Medium	Array, String, Hash_Table	3	99.09
0892	Surface Area of 3D Shapes	Java	Easy	Array, Math, Matrix, Geometry	2	98.73
0891	Sum of Subsequence Widths	Java	Hard	Array, Math, Sorting	56	30.61
0890	Find and Replace Pattern	Java	Medium	Array, String, Hash_Table	1	97.13
0889	Construct Binary Tree from Preorder and Postorder Traversal	Java	Medium	Array, Hash_Table, Tree, Binary_Tree, Divide_and_Conquer	1	91.04
0888	Fair Candy Swap	Java	Easy	Array, Hash_Table, Sorting, Binary_Search	18	68.20
0887	Super Egg Drop	Java	Hard	Dynamic_Programming, Math, Binary_Search	0	100.00
0886	Possible Bipartition	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph, Union_Find, Graph_Theory_I_Day_14_Graph_Theory	20	80.12
0885	Spiral Matrix III	Java	Medium	Array, Matrix, Simulation	3	95.45
0884	Uncommon Words from Two Sentences	Java	Easy	String, Hash_Table	1	100.00
0883	Projection Area of 3D Shapes	Java	Easy	Array, Math, Matrix, Geometry	1	100.00
0882	Reachable Nodes In Subdivided Graph	Java	Hard	Heap_Priority_Queue, Graph, Shortest_Path	28	95.85
0881	Boats to Save People	Java	Medium	Array, Sorting, Greedy, Two_Pointers	20	61.11
0880	Decoded String at Index	Java	Medium	String, Stack	0	100.00
0879	Profitable Schemes	Java	Hard	Array, Dynamic_Programming	80	43.42
0878	Nth Magical Number	Java	Hard	Math, Binary_Search	0	100.00
0877	Stone Game	Java	Medium	Array, Dynamic_Programming, Math, Game_Theory	0	100.00
0876	Middle of the Linked List	Java	Easy	Two_Pointers, Linked_List, Algorithm_I_Day_5_Two_Pointers, Programming_Skills_I_Day_10_Linked_List_&_Tree	0	100.00
0875	Koko Eating Bananas	Java	Medium	Array, Binary_Search, Binary_Search_II_Day_4	15	91.32
0874	Walking Robot Simulation	Java	Medium	Array, Simulation	16	93.75
0873	Length of Longest Fibonacci Subsequence	Java	Medium	Array, Hash_Table, Dynamic_Programming	120	92.64
0872	Leaf-Similar Trees	Java	Easy	Depth_First_Search, Tree, Binary_Tree	0	100.00
0871	Minimum Number of Refueling Stops	Java	Hard	Array, Dynamic_Programming, Greedy, Heap_Priority_Queue	3	88.52
0870	Advantage Shuffle	Java	Medium	Array, Sorting, Greedy	188	28.01
0869	Reordered Power of 2	Java	Medium	Math, Sorting, Counting, Enumeration	9	25.97
0868	Binary Gap	Java	Easy	Math, Bit_Manipulation	3	9.45
0867	Transpose Matrix	Java	Easy	Array, Matrix, Simulation	1	60.83
0866	Prime Palindrome	Java	Medium	Math	2	84.68
0865	Smallest Subtree with all the Deepest Nodes	Java	Medium	Hash_Table, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	0	100.00
0864	Shortest Path to Get All Keys	Java	Hard	Breadth_First_Search, Bit_Manipulation	12	100.00
0863	All Nodes Distance K in Binary Tree	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	12	80.25
0862	Shortest Subarray with Sum at Least K	Java	Hard	Array, Binary_Search, Heap_Priority_Queue, Prefix_Sum, Sliding_Window, Queue, Monotonic_Queue	53	74.73
0861	Score After Flipping Matrix	Java	Medium	Array, Greedy, Matrix, Bit_Manipulation	1	70.04
0860	Lemonade Change	Java	Easy	Array, Greedy, Programming_Skills_II_Day_17	2	90.84
0859	Buddy Strings	Java	Easy	String, Hash_Table	2	85.33
0858	Mirror Reflection	Java	Medium	Math, Geometry	0	100.00
0857	Minimum Cost to Hire K Workers	Java	Hard	Array, Sorting, Greedy, Heap_Priority_Queue	26	85.40
0856	Score of Parentheses	Java	Medium	String, Stack	1	67.71
0855	Exam Room	Java	Medium	Design, Ordered_Set	19	74.01
0854	K-Similar Strings	Java	Hard	String, Breadth_First_Search	2	99.58
0853	Car Fleet	Java	Medium	Array, Sorting, Stack, Monotonic_Stack	118	74.11
0852	Peak Index in a Mountain Array	Java	Easy	Array, Binary_Search, Binary_Search_I_Day_2	0	100.00
0851	Loud and Rich	Java	Medium	Array, Depth_First_Search, Graph, Topological_Sort	3	99.67
0850	Rectangle Area II	Java	Hard	Array, Ordered_Set, Segment_Tree, Line_Sweep	4	97.00
0849	Maximize Distance to Closest Person	Java	Medium	Array	1	100.00
0848	Shifting Letters	Java	Medium	Array, String	11	88.11
0847	Shortest Path Visiting All Nodes	Java	Hard	Dynamic_Programming, Breadth_First_Search, Bit_Manipulation, Graph, Bitmask, Graph_Theory_I_Day_10_Standard_Traversal	14	78.72
0846	Hand of Straights	Java	Medium	Array, Hash_Table, Sorting, Greedy	19	96.16
0845	Longest Mountain in Array	Java	Medium	Array, Dynamic_Programming, Two_Pointers, Enumeration	2	94.37
0844	Backspace String Compare	Java	Easy	String, Two_Pointers, Stack, Simulation, Algorithm_II_Day_4_Two_Pointers	0	100.00
0843	Guess the Word	Java	Hard	Array, String, Math, Game_Theory, Interactive	2	68.01
0842	Split Array into Fibonacci Sequence	Java	Medium	String, Backtracking	4	62.81
0841	Keys and Rooms	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph, Data_Structure_II_Day_19_Graph, Graph_Theory_I_Day_7_Standard_Traversal	3	51.54
0840	Magic Squares In Grid	Java	Medium	Array, Math, Matrix	0	100.00
0839	Similar String Groups	Java	Hard	Array, String, Depth_First_Search, Breadth_First_Search, Union_Find	15	80.39
0838	Push Dominoes	Java	Medium	String, Dynamic_Programming, Two_Pointers	21	73.78
0837	New 21 Game	Java	Medium	Dynamic_Programming, Math, Sliding_Window, Probability_and_Statistics	5	77.70
0836	Rectangle Overlap	Java	Easy	Math, Geometry	0	100.00
0835	Image Overlap	Java	Medium	Array, Matrix	6	98.73
0834	Sum of Distances in Tree	Java	Hard	Dynamic_Programming, Depth_First_Search, Tree, Graph	52	91.09
0833	Find And Replace in String	Java	Medium	Array, String, Sorting	3	70.10
0832	Flipping an Image	Java	Easy	Array, Matrix, Two_Pointers, Simulation	1	68.54
0831	Masking Personal Information	Java	Medium	String	1	84.30
0830	Positions of Large Groups	Java	Easy	String	2	80.94
0829	Consecutive Numbers Sum	Java	Hard	Math, Enumeration	3	93.37
0828	Count Unique Characters of All Substrings of a Given String	Java	Hard	String, Dynamic_Programming	101	18.42
0827	Making A Large Island	Java	Hard	Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find	147	74.37
0826	Most Profit Assigning Work	Java	Medium	Array, Sorting, Greedy, Binary_Search, Two_Pointers, Binary_Search_II_Day_11	21	83.83
0825	Friends Of Appropriate Ages	Java	Medium	Array, Sorting, Binary_Search, Two_Pointers	3	87.71
0824	Goat Latin	Java	Easy	String	2	94.82
0823	Binary Trees With Factors	Java	Medium	Array, Hash_Table, Dynamic_Programming	28	80.54
0822	Card Flipping Game	Java	Medium	Array, Hash_Table	2	96.55
0821	Shortest Distance to a Character	Java	Easy	Array, String, Two_Pointers	3	42.73
0820	Short Encoding of Words	Java	Medium	Array, String, Hash_Table, Trie	35	49.44
0819	Most Common Word	Java	Easy	String, Hash_Table, Counting	10	88.85
0818	Race Car	Java	Hard	Dynamic_Programming	9	82.90
0817	Linked List Components	Java	Medium	Hash_Table, Linked_List	7	76.10
0816	Ambiguous Coordinates	Java	Medium	String, Backtracking	4	98.95
0815	Bus Routes	Java	Hard	Array, Hash_Table, Breadth_First_Search	49	89.11
0814	Binary Tree Pruning	Java	Medium	Depth_First_Search, Tree, Binary_Tree	0	100.00
0813	Largest Sum of Averages	Java	Medium	Array, Dynamic_Programming	4	97.01
0812	Largest Triangle Area	Java	Easy	Array, Math, Geometry	5	92.04
0811	Subdomain Visit Count	Java	Medium	Array, String, Hash_Table, Counting	5	100.00
0810	Chalkboard XOR Game	Java	Hard	Array, Math, Bit_Manipulation, Game_Theory, Brainteaser	0	100.00
0809	Expressive Words	Java	Medium	Array, String, Two_Pointers	2	86.09
0808	Soup Servings	Java	Medium	Dynamic_Programming, Math, Probability_and_Statistics	1	96.04
0807	Max Increase to Keep City Skyline	Java	Medium	Array, Greedy, Matrix	2	23.49
0806	Number of Lines To Write String	Java	Easy	Array, String	1	65.23
0805	Split Array With Same Average	Java	Hard	Array, Dynamic_Programming, Math, Bit_Manipulation, Bitmask	1323	22.41
0804	Unique Morse Code Words	Java	Easy	Array, String, Hash_Table	2	89.27
0803	Bricks Falling When Hit	Java	Hard	Array, Matrix, Union_Find	12	94.92
0802	Find Eventual Safe States	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort, Graph_Theory_I_Day_9_Standard_Traversal	7	74.93
0801	Minimum Swaps To Make Sequences Increasing	Java	Hard	Array, Dynamic_Programming	6	71.94
0799	Champagne Tower	Java	Medium	Dynamic_Programming	4	92.45
0798	Smallest Rotation with Highest Score	Java	Hard	Array, Prefix_Sum	9	78.22
0797	All Paths From Source to Target	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph, Backtracking, Algorithm_II_Day_8_Breadth_First_Search_Depth_First_Search, Graph_Theory_I_Day_7_Standard_Traversal	2	90.53
0796	Rotate String	Java	Easy	String, String_Matching	0	100.00
0795	Number of Subarrays with Bounded Maximum	Java	Medium	Array, Two_Pointers	2	100.00
0794	Valid Tic-Tac-Toe State	Java	Medium	Array, String	0	100.00
0793	Preimage Size of Factorial Zeroes Function	Java	Hard	Math, Binary_Search	0	100.00
0792	Number of Matching Subsequences	Java	Medium	String, Hash_Table, Sorting, Trie	92	84.26
0791	Custom Sort String	Java	Medium	String, Hash_Table, Sorting	1	78.82
0790	Domino and Tromino Tiling	Java	Medium	Dynamic_Programming	0	100.00
0789	Escape The Ghosts	Java	Medium	Array, Math	0	100.00
0788	Rotated Digits	Java	Medium	Dynamic_Programming, Math	2	98.95
0787	Cheapest Flights Within K Stops	Java	Medium	Dynamic_Programming, Depth_First_Search, Breadth_First_Search, Heap_Priority_Queue, Graph, Shortest_Path	9	53.93
0786	K-th Smallest Prime Fraction	Java	Hard	Array, Binary_Search, Heap_Priority_Queue	2	96.60
0785	Is Graph Bipartite?	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph, Union_Find, Graph_Theory_I_Day_14_Graph_Theory	0	100.00
0784	Letter Case Permutation	Java	Medium	String, Bit_Manipulation, Backtracking, Algorithm_I_Day_11_Recursion_Backtracking	10	40.38
0783	Minimum Distance Between BST Nodes	Java	Easy	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Binary_Search_Tree	0	100.00
0782	Transform to Chessboard	Java	Hard	Array, Math, Matrix, Bit_Manipulation	2	53.57
0781	Rabbits in Forest	Java	Medium	Array, Hash_Table, Math, Greedy	1	99.15
0780	Reaching Points	Java	Hard	Math	0	100.00
0779	K-th Symbol in Grammar	Java	Medium	Math, Bit_Manipulation, Recursion	0	100.00
0778	Swim in Rising Water	Java	Hard	Array, Depth_First_Search, Breadth_First_Search, Binary_Search, Matrix, Heap_Priority_Queue, Union_Find	13	69.75
0777	Swap Adjacent in LR String	Java	Medium	String, Two_Pointers	4	85.13
0775	Global and Local Inversions	Java	Medium	Array, Math	1	99.74
0773	Sliding Puzzle	Java	Hard	Array, Breadth_First_Search, Matrix	9	81.80
0771	Jewels and Stones	Java	Easy	String, Hash_Table	1	91.74
0770	Basic Calculator IV	Java	Hard	String, Hash_Table, Math, Stack, Recursion	17	66.18
0769	Max Chunks To Make Sorted	Java	Medium	Array, Sorting, Greedy, Stack, Monotonic_Stack	0	100.00
0768	Max Chunks To Make Sorted II	Java	Hard	Array, Sorting, Greedy, Stack, Monotonic_Stack	1	87.58
0767	Reorganize String	Java	Medium	String, Hash_Table, Sorting, Greedy, Heap_Priority_Queue, Counting	1	94.60
0766	Toeplitz Matrix	Java	Easy	Array, Matrix	1	83.45
0765	Couples Holding Hands	Java	Hard	Depth_First_Search, Greedy, Breadth_First_Search, Graph, Union_Find	0	100.00
0764	Largest Plus Sign	Java	Medium	Array, Dynamic_Programming	39	87.23
0763	Partition Labels	Java	Medium	Top_100_Liked_Questions, String, Hash_Table, Greedy, Two_Pointers, Data_Structure_II_Day_7_String	1	100.00
0762	Prime Number of Set Bits in Binary Representation	Java	Easy	Math, Bit_Manipulation	4	98.39
0761	Special Binary String	Java	Hard	String, Recursion	1	100.00
0757	Set Intersection Size At Least Two	Java	Hard	Array, Sorting, Greedy	4	100.00
0756	Pyramid Transition Matrix	Java	Medium	Depth_First_Search, Breadth_First_Search, Bit_Manipulation	129	82.94
0754	Reach a Number	Java	Medium	Math, Binary_Search	0	100.00
0753	Cracking the Safe	Java	Hard	Depth_First_Search, Graph, Eulerian_Circuit	4	96.44
0752	Open the Lock	Java	Medium	Array, String, Hash_Table, Breadth_First_Search, Graph_Theory_I_Day_12_Breadth_First_Search	72	91.06
0749	Contain Virus	Java	Hard	Array, Depth_First_Search, Breadth_First_Search, Matrix, Simulation	23	37.62
0748	Shortest Completing Word	Java	Easy	Array, String, Hash_Table	3	93.75
0747	Largest Number At Least Twice of Others	Java	Easy	Array, Sorting	0	100.00
0746	Min Cost Climbing Stairs	Java	Easy	Array, Dynamic_Programming, Dynamic_Programming_I_Day_2	1	86.38
0745	Prefix and Suffix Search	Java	Hard	String, Design, Trie	366	76.15
0744	Find Smallest Letter Greater Than Target	Java	Easy	Array, Binary_Search, Binary_Search_I_Day_4	0	100.00
0743	Network Delay Time	Java	Medium	Depth_First_Search, Breadth_First_Search, Heap_Priority_Queue, Graph, Shortest_Path	3	99.87
0741	Cherry Pickup	Java	Hard	Array, Dynamic_Programming, Matrix	11	99.40
0740	Delete and Earn	Java	Medium	Array, Hash_Table, Dynamic_Programming, Dynamic_Programming_I_Day_3	4	77.68
0739	Daily Temperatures	Java	Medium	Top_100_Liked_Questions, Array, Stack, Monotonic_Stack, Programming_Skills_II_Day_6	10	94.99
0738	Monotone Increasing Digits	Java	Medium	Math, Greedy	0	100.00
0736	Parse Lisp Expression	Java	Hard	String, Hash_Table, Stack, Recursion	4	95.58
0735	Asteroid Collision	Java	Medium	Array, Stack	2	99.59
0733	Flood Fill	Java	Easy	Array, Depth_First_Search, Breadth_First_Search, Matrix, Algorithm_I_Day_7_Breadth_First_Search_Depth_First_Search, Graph_Theory_I_Day_1_Matrix_Related_Problems	1	85.36
0732	My Calendar III	Java	Hard	Design, Ordered_Set, Segment_Tree	40	95.37
0731	My Calendar II	Java	Medium	Design, Ordered_Set, Segment_Tree	27	97.74
0730	Count Different Palindromic Subsequences	Java	Hard	String, Dynamic_Programming	45	92.84
0729	My Calendar I	Java	Medium	Design, Ordered_Set, Segment_Tree, Programming_Skills_II_Day_20	17	97.23
0728	Self Dividing Numbers	Java	Easy	Math	1	100.00
0726	Number of Atoms	Java	Hard	String, Hash_Table, Sorting, Stack	4	87.22
0725	Split Linked List in Parts	Java	Medium	Linked_List	1	30.85
0724	Find Pivot Index	Java	Easy	Array, Prefix_Sum	2	69.67
0722	Remove Comments	Java	Medium	Array, String	1	80.24
0721	Accounts Merge	Java	Medium	Array, String, Depth_First_Search, Breadth_First_Search, Union_Find	71	31.21
0720	Longest Word in Dictionary	Java	Medium	Array, String, Hash_Table, Sorting, Trie	13	84.66
0719	Find K-th Smallest Pair Distance	Java	Hard	Array, Sorting, Binary_Search, Two_Pointers	8	81.40
0718	Maximum Length of Repeated Subarray	Java	Medium	Array, Dynamic_Programming, Binary_Search, Sliding_Window, Hash_Function, Rolling_Hash	58	77.21
0717	1-bit and 2-bit Characters	Java	Easy	Array	0	100.00
0715	Range Module	Java	Hard	Design, Ordered_Set, Segment_Tree	35	98.62
0714	Best Time to Buy and Sell Stock with Transaction Fee	Java	Medium	Array, Dynamic_Programming, Greedy, Dynamic_Programming_I_Day_8	4	78.57
0713	Subarray Product Less Than K	Java	Medium	Array, Sliding_Window, Algorithm_II_Day_5_Sliding_Window, Programming_Skills_II_Day_12	8	39.00
0712	Minimum ASCII Delete Sum for Two Strings	Java	Medium	String, Dynamic_Programming	18	91.28
0710	Random Pick with Blacklist	Java	Hard	Hash_Table, Math, Sorting, Binary_Search, Randomized	56	74.41
0709	To Lower Case	Java	Easy	String, Programming_Skills_I_Day_9_String	1	71.74
0707	Design Linked List	Java	Medium	Design, Linked_List, Data_Structure_II_Day_12_Linked_List, Programming_Skills_II_Day_19	10	70.60
0706	Design HashMap	Java	Easy	Array, Hash_Table, Design, Linked_List, Hash_Function, Data_Structure_II_Day_2_Array	13	95.71
0705	Design HashSet	Java	Easy	Array, Hash_Table, Design, Linked_List, Hash_Function	29	57.06
0704	Binary Search	Java	Easy	Array, Binary_Search, Algorithm_I_Day_1_Binary_Search, Binary_Search_I_Day_1	0	100.00
0703	Kth Largest Element in a Stream	Java	Easy	Tree, Binary_Tree, Design, Heap_Priority_Queue, Binary_Search_Tree, Data_Stream	22	52.43
0701	Insert into a Binary Search Tree	Java	Medium	Tree, Binary_Tree, Binary_Search_Tree, Data_Structure_I_Day_13_Tree	0	100.00
0700	Search in a Binary Search Tree	Java	Easy	Tree, Binary_Tree, Binary_Search_Tree, Data_Structure_I_Day_13_Tree	0	100.00
0699	Falling Squares	Java	Hard	Array, Ordered_Set, Segment_Tree	8	91.03
0698	Partition to K Equal Sum Subsets	Java	Medium	Array, Dynamic_Programming, Bit_Manipulation, Backtracking, Bitmask, Memoization	24	85.43
0697	Degree of an Array	Java	Easy	Array, Hash_Table	14	93.19
0696	Count Binary Substrings	Java	Easy	String, Two_Pointers	5	100.00
0695	Max Area of Island	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Algorithm_I_Day_7_Breadth_First_Search_Depth_First_Search, Graph_Theory_I_Day_2_Matrix_Related_Problems	3	76.79
0693	Binary Number with Alternating Bits	Java	Easy	Bit_Manipulation	0	100.00
0692	Top K Frequent Words	Java	Medium	String, Hash_Table, Sorting, Heap_Priority_Queue, Counting, Trie, Bucket_Sort	11	38.54
0691	Stickers to Spell Word	Java	Hard	Dynamic_Programming, Bit_Manipulation, Backtracking, Bitmask	34	70.23
0690	Employee Importance	Java	Medium	Hash_Table, Depth_First_Search, Breadth_First_Search	7	77.84
0689	Maximum Sum of 3 Non-Overlapping Subarrays	Java	Hard	Array, Dynamic_Programming	5	64.24
0688	Knight Probability in Chessboard	Java	Medium	Dynamic_Programming	7	85.13
0687	Longest Univalue Path	Java	Medium	Depth_First_Search, Tree, Binary_Tree	3	79.43
0686	Repeated String Match	Java	Medium	String, String_Matching	7	94.56
0685	Redundant Connection II	Java	Hard	Depth_First_Search, Breadth_First_Search, Graph, Union_Find	1	96.65
0684	Redundant Connection	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph, Union_Find	0	100.00
0682	Baseball Game	Java	Easy	Array, Stack, Simulation	4	57.60
0680	Valid Palindrome II	Java	Easy	String, Greedy, Two_Pointers	10	61.31
0679	24 Game	Java	Hard	Array, Math, Backtracking	3	87.01
0678	Valid Parenthesis String	Java	Medium	String, Dynamic_Programming, Greedy, Stack	0	100.00
0677	Map Sum Pairs	Java	Medium	String, Hash_Table, Design, Trie	17	70.10
0676	Implement Magic Dictionary	Java	Medium	String, Hash_Table, Design, Trie	38	86.83
0675	Cut Off Trees for Golf Event	Java	Hard	Array, Breadth_First_Search, Matrix, Heap_Priority_Queue	417	73.86
0674	Longest Continuous Increasing Subsequence	Java	Easy	Array	2	40.35
0673	Number of Longest Increasing Subsequence	Java	Medium	Array, Dynamic_Programming, Segment_Tree, Binary_Indexed_Tree, Algorithm_II_Day_16_Dynamic_Programming	25	68.75
0672	Bulb Switcher II	Java	Medium	Math, Depth_First_Search, Breadth_First_Search, Bit_Manipulation	0	100.00
0671	Second Minimum Node In a Binary Tree	Java	Easy	Depth_First_Search, Tree, Binary_Tree	0	100.00
0670	Maximum Swap	Java	Medium	Math, Greedy	1	80.14
0669	Trim a Binary Search Tree	Java	Medium	Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree	0	100.00
0668	Kth Smallest Number in Multiplication Table	Java	Hard	Binary_Search	12	97.84
0667	Beautiful Arrangement II	Java	Medium	Array, Math	1	84.62
0665	Non-decreasing Array	Java	Medium	Array	1	86.75
0664	Strange Printer	Java	Hard	String, Dynamic_Programming	24	76.35
0662	Maximum Width of Binary Tree	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	2	78.93
0661	Image Smoother	Java	Easy	Array, Matrix	2	100.00
0659	Split Array into Consecutive Subsequences	Java	Medium	Array, Hash_Table, Greedy, Heap_Priority_Queue	4	95.88
0658	Find K Closest Elements	Java	Medium	Array, Sorting, Binary_Search, Two_Pointers, Heap_Priority_Queue, Binary_Search_II_Day_2	3	99.20
0657	Robot Return to Origin	Java	Easy	String, Simulation	3	99.87
0655	Print Binary Tree	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	1	98.04
0654	Maximum Binary Tree	Java	Medium	Array, Tree, Binary_Tree, Stack, Monotonic_Stack, Divide_and_Conquer	3	84.36
0653	Two Sum IV - Input is a BST	Java	Easy	Hash_Table, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Two_Pointers, Binary_Search_Tree, Data_Structure_I_Day_14_Tree	5	74.23
0652	Find Duplicate Subtrees	Java	Medium	Hash_Table, Depth_First_Search, Tree, Binary_Tree	32	60.16
0650	2 Keys Keyboard	Java	Medium	Dynamic_Programming, Math	0	100.00
0649	Dota2 Senate	Java	Medium	String, Greedy, Queue	4	95.00
0648	Replace Words	Java	Medium	Array, String, Hash_Table, Trie	14	87.12
0647	Palindromic Substrings	Java	Medium	String, Dynamic_Programming	2	98.77
0646	Maximum Length of Pair Chain	Java	Medium	Array, Dynamic_Programming, Sorting, Greedy	11	88.84
0645	Set Mismatch	Java	Easy	Array, Hash_Table, Sorting, Bit_Manipulation	2	97.45
0643	Maximum Average Subarray I	Java	Easy	Array, Sliding_Window	5	74.81
0641	Design Circular Deque	Java	Medium	Array, Design, Linked_List, Queue	3	100.00
0640	Solve the Equation	Java	Medium	String, Math, Simulation	5	69.29
0639	Decode Ways II	Java	Hard	String, Dynamic_Programming	22	93.12
0638	Shopping Offers	Java	Medium	Array, Dynamic_Programming, Bit_Manipulation, Backtracking, Bitmask, Memoization	6	71.06
0637	Average of Levels in Binary Tree	Java	Easy	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	2	89.32
0636	Exclusive Time of Functions	Java	Medium	Array, Stack	17	76.73
0633	Sum of Square Numbers	Java	Medium	Math, Binary_Search, Two_Pointers, Binary_Search_I_Day_10	4	82.92
0632	Smallest Range Covering Elements from K Lists	Java	Hard	Array, Hash_Table, Sorting, Greedy, Heap_Priority_Queue, Sliding_Window	31	87.39
0630	Course Schedule III	Java	Hard	Array, Greedy, Heap_Priority_Queue	53	58.83
0629	K Inverse Pairs Array	Java	Hard	Dynamic_Programming	19	94.44
0628	Maximum Product of Three Numbers	Java	Easy	Array, Math, Sorting	2	99.90
0627	Swap Salary	Sql	Easy	Database, SQL_I_Day_2_Select_&_Order	191	96.89
0626	Exchange Seats	Sql	Medium	Database	274	65.75
0623	Add One Row to Tree	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	0	100.00
0622	Design Circular Queue	Java	Medium	Array, Design, Linked_List, Queue, Programming_Skills_II_Day_20	3	100.00
0621	Task Scheduler	Java	Medium	Array, Hash_Table, Sorting, Greedy, Heap_Priority_Queue, Counting	3	84.32
0620	Not Boring Movies	Sql	Easy	Database	258	28.33
0617	Merge Two Binary Trees	Java	Easy	Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Algorithm_I_Day_8_Breadth_First_Search_Depth_First_Search	1	72.47
0611	Valid Triangle Number	Java	Medium	Array, Sorting, Greedy, Binary_Search, Two_Pointers, Binary_Search_II_Day_1	10	100.00
0609	Find Duplicate File in System	Java	Medium	Array, String, Hash_Table	20	97.68
0608	Tree Node	Sql	Medium	Database, SQL_I_Day_4_Union_&_Select	347	95.17
0606	Construct String from Binary Tree	Java	Easy	String, Depth_First_Search, Tree, Binary_Tree	1	100.00
0605	Can Place Flowers	Java	Easy	Array, Greedy	1	96.77
0601	Human Traffic of Stadium	Sql	Hard	Database	328	62.41
0600	Non-negative Integers without Consecutive Ones	Java	Hard	Dynamic_Programming	2	74.62
0599	Minimum Index Sum of Two Lists	Java	Easy	Array, String, Hash_Table	7	93.97
0598	Range Addition II	Java	Easy	Array, Math	0	100.00
0596	Classes More Than 5 Students	Sql	Easy	Database	243	92.65
0595	Big Countries	Sql	Easy	Database, SQL_I_Day_1_Select	241	92.61
0594	Longest Harmonious Subsequence	Java	Easy	Array, Hash_Table, Sorting	11	99.77
0593	Valid Square	Java	Medium	Math, Geometry	1	97.14
0592	Fraction Addition and Subtraction	Java	Medium	String, Math, Simulation	4	98.58
0591	Tag Validator	Java	Hard	String, Stack	3	70.89
0590	N-ary Tree Postorder Traversal	Java	Easy	Depth_First_Search, Tree, Stack	0	100.00
0589	N-ary Tree Preorder Traversal	Java	Easy	Depth_First_Search, Tree, Stack, Programming_Skills_I_Day_5_Function	2	54.35
0587	Erect the Fence	Java	Hard	Array, Math, Geometry	10	87.50
0584	Find Customer Referee	Sql	Easy	Database, SQL_I_Day_1_Select	505	43.87
0583	Delete Operation for Two Strings	Java	Medium	String, Dynamic_Programming, Algorithm_II_Day_17_Dynamic_Programming	12	73.04
0581	Shortest Unsorted Continuous Subarray	Java	Medium	Array, Sorting, Greedy, Two_Pointers, Stack, Monotonic_Stack	1	98.19
0576	Out of Boundary Paths	Java	Medium	Dynamic_Programming	7	74.13
0575	Distribute Candies	Java	Easy	Array, Hash_Table	64	40.90
0572	Subtree of Another Tree	Java	Easy	Depth_First_Search, Tree, Binary_Tree, Hash_Function, String_Matching, Algorithm_II_Day_7_Breadth_First_Search_Depth_First_Search	0	100.00
0567	Permutation in String	Java	Medium	String, Hash_Table, Two_Pointers, Sliding_Window, Algorithm_I_Day_6_Sliding_Window	4	95.23
0566	Reshape the Matrix	Java	Easy	Array, Matrix, Simulation, Data_Structure_I_Day_4_Array, Programming_Skills_I_Day_7_Array	1	84.34
0565	Array Nesting	Java	Medium	Array, Depth_First_Search	4	98.54
0564	Find the Closest Palindrome	Java	Hard	String, Math	1	100.00
0563	Binary Tree Tilt	Java	Easy	Depth_First_Search, Tree, Binary_Tree	0	100.00
0561	Array Partition I	Java	Easy	Array, Sorting, Greedy, Counting_Sort	18	31.77
0560	Subarray Sum Equals K	Java	Medium	Top_100_Liked_Questions, Array, Hash_Table, Prefix_Sum, Data_Structure_II_Day_5_Array	18	89.51
0559	Maximum Depth of N-ary Tree	Java	Easy	Depth_First_Search, Breadth_First_Search, Tree	1	78.18
0558	Logical OR of Two Binary Grids Represented as Quad-Trees	Java	Medium	Tree, Divide_and_Conquer	0	100.00
0557	Reverse Words in a String III	Java	Easy	String, Two_Pointers, Algorithm_I_Day_4_Two_Pointers	5	88.09
0556	Next Greater Element III	Java	Medium	String, Math, Two_Pointers, Programming_Skills_II_Day_10	0	100.00
0554	Brick Wall	Java	Medium	Array, Hash_Table	13	75.64
0553	Optimal Division	Java	Medium	Array, Dynamic_Programming, Math	1	96.63
0552	Student Attendance Record II	Java	Hard	Dynamic_Programming	8	99.21
0551	Student Attendance Record I	Java	Easy	String	1	68.22
0547	Number of Provinces	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph, Union_Find, Algorithm_II_Day_6_Breadth_First_Search_Depth_First_Search, Graph_Theory_I_Day_8_Standard_Traversal	1	94.56
0546	Remove Boxes	Java	Hard	Array, Dynamic_Programming, Memoization	86	60.93
0543	Diameter of Binary Tree	Java	Easy	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree	1	55.16
0542	01 Matrix	Java	Medium	Array, Dynamic_Programming, Breadth_First_Search, Matrix, Algorithm_I_Day_9_Breadth_First_Search_Depth_First_Search, Graph_Theory_I_Day_5_Matrix_Related_Problems	6	96.78
0541	Reverse String II	Java	Easy	String, Two_Pointers	1	93.18
0540	Single Element in a Sorted Array	Java	Medium	Array, Binary_Search, Binary_Search_II_Day_9	0	100.00
0539	Minimum Time Difference	Java	Medium	Array, String, Math, Sorting	3	93.52
0538	Convert BST to Greater Tree	Java	Medium	Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree	1	83.78
0537	Complex Number Multiplication	Java	Medium	String, Math, Simulation	7	62.22
0535	Encode and Decode TinyURL	Java	Medium	String, Hash_Table, Design, Hash_Function	3	82.89
0532	K-diff Pairs in an Array	Java	Medium	Array, Hash_Table, Sorting, Binary_Search, Two_Pointers	14	49.69
0530	Minimum Absolute Difference in BST	Java	Easy	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Binary_Search_Tree	0	100.00
0529	Minesweeper	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Matrix	0	100.00
0528	Random Pick with Weight	Java	Medium	Math, Binary_Search, Prefix_Sum, Randomized, Binary_Search_II_Day_13	29	83.26
0526	Beautiful Arrangement	Java	Medium	Array, Dynamic_Programming, Bit_Manipulation, Backtracking, Bitmask	3	98.99
0525	Contiguous Array	Java	Medium	Array, Hash_Table, Prefix_Sum	17	92.02
0524	Longest Word in Dictionary through Deleting	Java	Medium	Array, String, Sorting, Two_Pointers	10	97.43
0523	Continuous Subarray Sum	Java	Medium	Array, Hash_Table, Math, Prefix_Sum	25	78.40
0522	Longest Uncommon Subsequence II	Java	Medium	Array, String, Hash_Table, Sorting, Two_Pointers	1	100.00
0521	Longest Uncommon Subsequence I	Java	Easy	String	0	100.00
0520	Detect Capital	Java	Easy	String	2	72.44
0519	Random Flip Matrix	Java	Medium	Hash_Table, Math, Randomized, Reservoir_Sampling	39	68.47
0518	Coin Change 2	Java	Medium	Array, Dynamic_Programming, Dynamic_Programming_I_Day_20	3	91.32
0517	Super Washing Machines	Java	Hard	Array, Greedy	0	100.00
0516	Longest Palindromic Subsequence	Java	Medium	String, Dynamic_Programming, Dynamic_Programming_I_Day_17	31	96.10
0515	Find Largest Value in Each Tree Row	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	1	96.84
0514	Freedom Trail	Java	Hard	String, Dynamic_Programming, Depth_First_Search, Breadth_First_Search	17	75.84
0513	Find Bottom Left Tree Value	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	1	80.06
0509	Fibonacci Number	Java	Easy	Dynamic_Programming, Math, Recursion, Memoization, Dynamic_Programming_I_Day_1	0	100.00
0508	Most Frequent Subtree Sum	Java	Medium	Hash_Table, Depth_First_Search, Tree, Binary_Tree	6	77.55
0507	Perfect Number	Java	Easy	Math	2	73.73
0506	Relative Ranks	Java	Easy	Array, Sorting, Heap_Priority_Queue	4	99.79
0504	Base 7	Java	Easy	Math	1	94.93
0503	Next Greater Element II	Java	Medium	Array, Stack, Monotonic_Stack, Programming_Skills_II_Day_10	7	95.85
0502	IPO	Java	Hard	Array, Sorting, Greedy, Heap_Priority_Queue	43	92.06
0501	Find Mode in Binary Search Tree	Java	Easy	Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree	1	91.60
0500	Keyboard Row	Java	Easy	Array, String, Hash_Table	0	100.00
0498	Diagonal Traverse	Java	Medium	Array, Matrix, Simulation	2	96.07
0497	Random Point in Non-overlapping Rectangles	Java	Medium	Math, Binary_Search, Prefix_Sum, Ordered_Set, Randomized, Reservoir_Sampling	44	97.50
0496	Next Greater Element I	Java	Easy	Array, Hash_Table, Stack, Monotonic_Stack, Programming_Skills_I_Day_5_Function	3	84.97
0495	Teemo Attacking	Java	Easy	Array, Simulation	4	26.85
0494	Target Sum	Java	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Backtracking	10	82.41
0493	Reverse Pairs	Java	Hard	Array, Binary_Search, Ordered_Set, Divide_and_Conquer, Segment_Tree, Binary_Indexed_Tree, Merge_Sort	121	31.13
0492	Construct the Rectangle	Java	Easy	Math	1	74.25
0491	Increasing Subsequences	Java	Medium	Array, Hash_Table, Bit_Manipulation, Backtracking	22	46.38
0488	Zuma Game	Java	Hard	String, Dynamic_Programming, Breadth_First_Search, Memoization	2077	7.41
0486	Predict the Winner	Java	Medium	Array, Dynamic_Programming, Math, Recursion, Game_Theory	0	100.00
0485	Max Consecutive Ones	Java	Easy	Array	1	100.00
0483	Smallest Good Base	Java	Hard	Math, Binary_Search	3	87.88
0482	License Key Formatting	Java	Easy	String	7	98.60
0481	Magical String	Java	Medium	String, Two_Pointers	5	88.46
0480	Sliding Window Median	Java	Hard	Array, Hash_Table, Heap_Priority_Queue, Sliding_Window	46	80.65
0479	Largest Palindrome Product	Java	Hard	Math	6	97.54
0478	Generate Random Point in a Circle	Java	Medium	Math, Geometry, Randomized, Rejection_Sampling	196	98.10
0477	Total Hamming Distance	Java	Medium	Array, Math, Bit_Manipulation	5	90.97
0476	Number Complement	Java	Easy	Bit_Manipulation	0	100.00
0475	Heaters	Java	Medium	Array, Sorting, Binary_Search, Two_Pointers	8	99.30
0474	Ones and Zeroes	Java	Medium	Array, String, Dynamic_Programming	41	68.79
0473	Matchsticks to Square	Java	Medium	Array, Dynamic_Programming, Bit_Manipulation, Backtracking, Bitmask	241	18.95
0472	Concatenated Words	Java	Hard	Array, String, Dynamic_Programming, Depth_First_Search, Trie	84	79.03
0470	Implement Rand10() Using Rand7()	Java	Medium	Math, Randomized, Probability_and_Statistics, Rejection_Sampling	10	51.04
0468	Validate IP Address	Java	Medium	String	1	98.15
0467	Unique Substrings in Wraparound String	Java	Medium	String, Dynamic_Programming	5	88.61
0466	Count The Repetitions	Java	Hard	String, Dynamic_Programming	1	100.00
0464	Can I Win	Java	Medium	Dynamic_Programming, Math, Bit_Manipulation, Bitmask, Memoization, Game_Theory	159	84.80
0463	Island Perimeter	Java	Easy	Array, Depth_First_Search, Breadth_First_Search, Matrix	9	74.15
0462	Minimum Moves to Equal Array Elements II	Java	Medium	Array, Math, Sorting	3	94.38
0461	Hamming Distance	Java	Easy	Bit_Manipulation	1	39.19
0460	LFU Cache	Java	Hard	Hash_Table, Design, Linked_List, Doubly_Linked_List	45	99.66
0459	Repeated Substring Pattern	Java	Easy	String, String_Matching, Programming_Skills_II_Day_2	9	90.15
0458	Poor Pigs	Java	Hard	Dynamic_Programming, Math, Combinatorics	0	100.00
0457	Circular Array Loop	Java	Medium	Array, Hash_Table, Two_Pointers	2	73.72
0456	132 Pattern	Java	Medium	Array, Binary_Search, Stack, Ordered_Set, Monotonic_Stack	15	80.22
0455	Assign Cookies	Java	Easy	Array, Sorting, Greedy	11	42.95
0454	4Sum II	Java	Medium	Top_Interview_Questions, Array, Hash_Table	157	74.79
0453	Minimum Moves to Equal Array Elements	Java	Medium	Array, Math	1	100.00
0452	Minimum Number of Arrows to Burst Balloons	Java	Medium	Array, Sorting, Greedy	80	76.91
0451	Sort Characters By Frequency	Java	Medium	String, Hash_Table, Sorting, Heap_Priority_Queue, Counting, Bucket_Sort, Data_Structure_II_Day_21_Heap_Priority_Queue	18	70.93
0450	Delete Node in a BST	Java	Medium	Tree, Binary_Tree, Binary_Search_Tree, Data_Structure_II_Day_16_Tree	0	100.00
0448	Find All Numbers Disappeared in an Array	Java	Easy	Array, Hash_Table	3	100.00
0443	String Compression	Java	Medium	String, Two_Pointers	2	60.36
0442	Find All Duplicates in an Array	Java	Medium	Array, Hash_Table	5	94.88
0441	Arranging Coins	Java	Easy	Math, Binary_Search, Binary_Search_I_Day_6	2	87.99
0440	K-th Smallest in Lexicographical Order	Java	Hard	Trie	0	100.00
0438	Find All Anagrams in a String	Java	Medium	Top_100_Liked_Questions, String, Hash_Table, Sliding_Window, Algorithm_II_Day_5_Sliding_Window, Programming_Skills_II_Day_12	8	87.18
0437	Path Sum III	Java	Medium	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree	4	87.75
0436	Find Right Interval	Java	Medium	Array, Sorting, Binary_Search, Binary_Search_II_Day_11	17	87.90
0435	Non-overlapping Intervals	Java	Medium	Array, Dynamic_Programming, Sorting, Greedy, Data_Structure_II_Day_4_Array	109	26.80
0434	Number of Segments in a String	Java	Easy	String	0	100.00
0433	Minimum Genetic Mutation	Java	Medium	String, Hash_Table, Breadth_First_Search, Graph_Theory_I_Day_12_Breadth_First_Search	0	100.00
0432	All O`one Data Structure	Java	Hard	Hash_Table, Design, Linked_List, Doubly_Linked_List	87	62.81
0430	Flatten a Multilevel Doubly Linked List	Java	Medium	Depth_First_Search, Linked_List, Doubly_Linked_List	0	100.00
0429	N-ary Tree Level Order Traversal	Java	Medium	Breadth_First_Search, Tree, Programming_Skills_II_Day_9	4	57.07
0427	Construct Quad Tree	Java	Medium	Array, Tree, Matrix, Divide_and_Conquer	1	85.16
0424	Longest Repeating Character Replacement	Java	Medium	String, Hash_Table, Sliding_Window	5	92.61
0423	Reconstruct Original Digits from English	Java	Medium	String, Hash_Table, Math	3	100.00
0421	Maximum XOR of Two Numbers in an Array	Java	Medium	Array, Hash_Table, Bit_Manipulation, Trie	22	99.22
0420	Strong Password Checker	Java	Hard	String, Greedy, Heap_Priority_Queue	0	100.00
0419	Battleships in a Board	Java	Medium	Array, Depth_First_Search, Matrix	1	83.10
0417	Pacific Atlantic Water Flow	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Matrix, Graph_Theory_I_Day_4_Matrix_Related_Problems	5	89.66
0416	Partition Equal Subset Sum	Java	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming	1	99.87
0415	Add Strings	Java	Easy	String, Math, Simulation, Data_Structure_II_Day_6_String	3	75.64
0414	Third Maximum Number	Java	Easy	Array, Sorting	1	96.71
0413	Arithmetic Slices	Java	Medium	Array, Dynamic_Programming, Algorithm_II_Day_14_Dynamic_Programming, Dynamic_Programming_I_Day_10	0	100.00
0412	Fizz Buzz	Java	Easy	Top_Interview_Questions, String, Math, Simulation	3	32.80
0410	Split Array Largest Sum	Java	Hard	Array, Dynamic_Programming, Greedy, Binary_Search	1	84.88
0409	Longest Palindrome	Java	Easy	String, Hash_Table, Greedy, Data_Structure_II_Day_6_String	1	100.00
0407	Trapping Rain Water II	Java	Hard	Array, Breadth_First_Search, Matrix, Heap_Priority_Queue	10	99.01
0406	Queue Reconstruction by Height	Java	Medium	Array, Sorting, Greedy, Segment_Tree, Binary_Indexed_Tree	9	74.45
0405	Convert a Number to Hexadecimal	Java	Easy	Math, Bit_Manipulation	0	100.00
0404	Sum of Left Leaves	Java	Easy	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Programming_Skills_I_Day_10_Linked_List_&_Tree	0	100.00
0403	Frog Jump	Java	Hard	Array, Dynamic_Programming	18	97.19
0402	Remove K Digits	Java	Medium	String, Greedy, Stack, Monotonic_Stack	6	90.82
0401	Binary Watch	Java	Easy	Bit_Manipulation, Backtracking	1	98.21
0400	Nth Digit	Java	Medium	Math, Binary_Search	0	100.00
0399	Evaluate Division	Java	Medium	Array, Depth_First_Search, Breadth_First_Search, Graph, Union_Find, Shortest_Path	1	97.67
0398	Random Pick Index	Java	Medium	Hash_Table, Math, Randomized, Reservoir_Sampling	75	74.64
0397	Integer Replacement	Java	Medium	Dynamic_Programming, Greedy, Bit_Manipulation, Memoization	0	100.00
0396	Rotate Function	Java	Medium	Array, Dynamic_Programming, Math	3	98.51
0395	Longest Substring with At Least K Repeating Characters	Java	Medium	Top_Interview_Questions, String, Hash_Table, Sliding_Window, Divide_and_Conquer	0	100.00
0394	Decode String	Java	Medium	Top_100_Liked_Questions, String, Stack, Recursion	1	83.81
0393	UTF-8 Validation	Java	Medium	Array, Bit_Manipulation	1	100.00
0392	Is Subsequence	Java	Easy	String, Dynamic_Programming, Two_Pointers, Dynamic_Programming_I_Day_19	0	100.00
0391	Perfect Rectangle	Java	Hard	Array, Line_Sweep	49	67.32
0390	Elimination Game	Java	Medium	Math	2	100.00
0389	Find the Difference	Java	Easy	String, Hash_Table, Sorting, Bit_Manipulation, Programming_Skills_I_Day_8_String	1	99.83
0388	Longest Absolute File Path	Java	Medium	String, Depth_First_Search, Stack	2	52.22
0387	First Unique Character in a String	Java	Easy	Top_Interview_Questions, String, Hash_Table, Counting, Queue, Data_Structure_I_Day_6_String	2	99.53
0386	Lexicographical Numbers	Java	Medium	Depth_First_Search, Trie	4	87.17
0385	Mini Parser	Java	Medium	String, Depth_First_Search, Stack	3	97.44
0384	Shuffle an Array	Java	Medium	Top_Interview_Questions, Array, Math, Randomized, Algorithm_II_Day_20_Others	65	94.59
0383	Ransom Note	Java	Easy	String, Hash_Table, Counting, Data_Structure_I_Day_6_String	1	99.79
0382	Linked List Random Node	Java	Medium	Math, Linked_List, Randomized, Reservoir_Sampling	7	100.00
0381	Insert Delete GetRandom O(1) - Duplicates allowed	Java	Hard	Array, Hash_Table, Math, Design, Randomized	26	100.00
0380	Insert Delete GetRandom O(1)	Java	Medium	Top_Interview_Questions, Array, Hash_Table, Math, Design, Randomized, Programming_Skills_II_Day_20	20	99.24
0378	Kth Smallest Element in a Sorted Matrix	Java	Medium	Top_Interview_Questions, Array, Sorting, Binary_Search, Matrix, Heap_Priority_Queue	0	100.00
0377	Combination Sum IV	Java	Medium	Array, Dynamic_Programming, Dynamic_Programming_I_Day_21	1	91.72
0376	Wiggle Subsequence	Java	Medium	Array, Dynamic_Programming, Greedy, Dynamic_Programming_I_Day_18	0	100.00
0375	Guess Number Higher or Lower II	Java	Medium	Dynamic_Programming, Math, Game_Theory	1	100.00
0374	Guess Number Higher or Lower	Java	Easy	Binary_Search, Interactive, Binary_Search_I_Day_1	0	100.00
0373	Find K Pairs with Smallest Sums	Java	Medium	Array, Heap_Priority_Queue	58	29.29
0372	Super Pow	Java	Medium	Math, Divide_and_Conquer	2	91.10
0371	Sum of Two Integers	Java	Medium	Top_Interview_Questions, Math, Bit_Manipulation	0	100.00
0368	Largest Divisible Subset	Java	Medium	Array, Dynamic_Programming, Math, Sorting	20	87.61
0367	Valid Perfect Square	Java	Easy	Math, Binary_Search, Binary_Search_I_Day_3	0	100.00
0365	Water and Jug Problem	Java	Medium	Math, Depth_First_Search, Breadth_First_Search, Graph_Theory_I_Day_11_Breadth_First_Search	0	100.00
0363	Max Sum of Rectangle No Larger Than K	Java	Hard	Array, Dynamic_Programming, Binary_Search, Matrix, Ordered_Set	69	97.33
0357	Count Numbers with Unique Digits	Java	Medium	Dynamic_Programming, Math, Backtracking	0	100.00
0355	Design Twitter	Java	Medium	Hash_Table, Design, Heap_Priority_Queue, Linked_List	8	99.79
0354	Russian Doll Envelopes	Java	Hard	Array, Dynamic_Programming, Sorting, Binary_Search	65	67.49
0352	Data Stream as Disjoint Intervals	Java	Hard	Binary_Search, Design, Ordered_Set	94	76.26
0350	Intersection of Two Arrays II	Java	Easy	Top_Interview_Questions, Array, Hash_Table, Sorting, Binary_Search, Two_Pointers, Data_Structure_I_Day_3_Array, Binary_Search_I_Day_10	3	81.79
0349	Intersection of Two Arrays	Java	Easy	Array, Hash_Table, Sorting, Binary_Search, Two_Pointers	1	99.75
0347	Top K Frequent Elements	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Sorting, Heap_Priority_Queue, Counting, Divide_and_Conquer, Quickselect, Bucket_Sort, Data_Structure_II_Day_20_Heap_Priority_Queue	7	99.54
0345	Reverse Vowels of a String	Java	Easy	String, Two_Pointers	4	86.90
0344	Reverse String	Java	Easy	Top_Interview_Questions, String, Two_Pointers, Recursion, Algorithm_I_Day_4_Two_Pointers	1	87.94
0343	Integer Break	Java	Medium	Dynamic_Programming, Math, Algorithm_II_Day_18_Dynamic_Programming, Dynamic_Programming_I_Day_21	0	100.00
0342	Power of Four	Java	Easy	Math, Bit_Manipulation, Recursion	1	91.73
0341	Flatten Nested List Iterator	Java	Medium	Top_Interview_Questions, Depth_First_Search, Tree, Stack, Design, Queue, Iterator, Programming_Skills_II_Day_18	3	86.51
0338	Counting Bits	Java	Easy	Top_100_Liked_Questions, Dynamic_Programming, Bit_Manipulation	1	99.97
0337	House Robber III	Java	Medium	Dynamic_Programming, Depth_First_Search, Tree, Binary_Tree	1	87.96
0336	Palindrome Pairs	Java	Hard	Array, String, Hash_Table, Trie	1219	54.97
0335	Self Crossing	Java	Hard	Array, Math, Geometry	6	44.12
0334	Increasing Triplet Subsequence	Java	Medium	Top_Interview_Questions, Array, Greedy, Data_Structure_II_Day_5_Array	3	61.85
0332	Reconstruct Itinerary	Java	Hard	Depth_First_Search, Graph, Eulerian_Circuit	11	47.68
0331	Verify Preorder Serialization of a Binary Tree	Java	Medium	String, Tree, Binary_Tree, Stack	3	94.01
0330	Patching Array	Java	Hard	Array, Greedy	0	100.00
0329	Longest Increasing Path in a Matrix	Java	Hard	Top_Interview_Questions, Dynamic_Programming, Depth_First_Search, Breadth_First_Search, Graph, Memoization, Topological_Sort	8	91.02
0328	Odd Even Linked List	Java	Medium	Top_Interview_Questions, Linked_List	0	100.00
0327	Count of Range Sum	Java	Hard	Array, Binary_Search, Ordered_Set, Divide_and_Conquer, Segment_Tree, Binary_Indexed_Tree, Merge_Sort	64	87.41
0326	Power of Three	Java	Easy	Top_Interview_Questions, Math, Recursion	18	79.91
0324	Wiggle Sort II	Java	Medium	Top_Interview_Questions, Array, Sorting, Divide_and_Conquer, Quickselect	6	69.23
0322	Coin Change	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Breadth_First_Search, Algorithm_II_Day_18_Dynamic_Programming, Dynamic_Programming_I_Day_20	22	72.14
0321	Create Maximum Number	Java	Hard	Greedy, Stack, Monotonic_Stack	9	93.46
0319	Bulb Switcher	Java	Medium	Math, Brainteaser	0	100.00
0318	Maximum Product of Word Lengths	Java	Medium	Array, String, Bit_Manipulation	10	81.97
0316	Remove Duplicate Letters	Java	Medium	String, Greedy, Stack, Monotonic_Stack	2	98.39
0315	Count of Smaller Numbers After Self	Java	Hard	Top_Interview_Questions, Array, Binary_Search, Ordered_Set, Divide_and_Conquer, Segment_Tree, Binary_Indexed_Tree, Merge_Sort	34	96.38
0313	Super Ugly Number	Java	Medium	Array, Hash_Table, Dynamic_Programming, Math, Heap_Priority_Queue	280	86.61
0312	Burst Balloons	Java	Hard	Array, Dynamic_Programming	53	86.06
0310	Minimum Height Trees	Java	Medium	Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort	22	94.43
0309	Best Time to Buy and Sell Stock with Cooldown	Java	Medium	Array, Dynamic_Programming, Dynamic_Programming_I_Day_8	0	100.00
0307	Range Sum Query - Mutable	Java	Medium	Array, Design, Segment_Tree, Binary_Indexed_Tree	61	98.40
0306	Additive Number	Java	Medium	String, Backtracking	1	87.31
0304	Range Sum Query 2D - Immutable	Java	Medium	Array, Matrix, Design, Prefix_Sum, Dynamic_Programming_I_Day_14, Programming_Skills_II_Day_13	103	98.60
0303	Range Sum Query - Immutable	Java	Easy	Array, Design, Prefix_Sum, Programming_Skills_I_Day_12_Class_&_Object	6	100.00
0301	Remove Invalid Parentheses	Java	Hard	String, Breadth_First_Search, Backtracking	4	86.17
0300	Longest Increasing Subsequence	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Binary_Search, Algorithm_II_Day_16_Dynamic_Programming, Binary_Search_II_Day_3, Dynamic_Programming_I_Day_18	3	96.86
0299	Bulls and Cows	Java	Medium	String, Hash_Table, Counting	8	67.24
0297	Serialize and Deserialize Binary Tree	Java	Hard	Top_100_Liked_Questions, Top_Interview_Questions, String, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Design, Data_Structure_II_Day_18_Tree	9	91.82
0295	Find Median from Data Stream	Java	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Sorting, Two_Pointers, Design, Heap_Priority_Queue, Data_Stream	88	98.03
0292	Nim Game	Java	Easy	Math, Game_Theory, Brainteaser	0	100.00
0290	Word Pattern	Java	Easy	String, Hash_Table, Data_Structure_II_Day_7_String	1	91.62
0289	Game of Life	Java	Medium	Top_Interview_Questions, Array, Matrix, Simulation	0	100.00
0287	Find the Duplicate Number	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Two_Pointers, Bit_Manipulation, Binary_Search_II_Day_5	4	94.82
0284	Peeking Iterator	Java	Medium	Array, Design, Iterator	5	78.72
0283	Move Zeroes	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Two_Pointers, Algorithm_I_Day_3_Two_Pointers, Programming_Skills_I_Day_6_Array	2	74.00
0282	Expression Add Operators	Java	Hard	String, Math, Backtracking	7	99.73
0279	Perfect Squares	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Breadth_First_Search, Dynamic_Programming_I_Day_21	0	100.00
0278	First Bad Version	Java	Easy	Binary_Search, Interactive, Algorithm_I_Day_1_Binary_Search, Binary_Search_I_Day_5	12	99.50
0275	H-Index II	Java	Medium	Array, Binary_Search, Binary_Search_II_Day_8	0	100.00
0274	H-Index	Java	Medium	Array, Sorting, Counting_Sort	2	51.85
0273	Integer to English Words	Java	Hard	String, Math, Recursion	5	83.37
0268	Missing Number	Java	Easy	Top_Interview_Questions, Array, Hash_Table, Math, Sorting, Bit_Manipulation	0	100.00
0264	Ugly Number II	Java	Medium	Hash_Table, Dynamic_Programming, Math, Heap_Priority_Queue, Dynamic_Programming_I_Day_11	3	88.43
0263	Ugly Number	Java	Easy	Math	1	95.93
0262	Trips and Users	Sql	Hard	Database	449	79.92
0260	Single Number III	Java	Medium	Array, Bit_Manipulation	1	98.18
0258	Add Digits	Java	Easy	Math, Simulation, Number_Theory	1	95.33
0257	Binary Tree Paths	Java	Easy	String, Depth_First_Search, Tree, Binary_Tree, Backtracking	2	91.59
0242	Valid Anagram	Java	Easy	Top_Interview_Questions, String, Hash_Table, Sorting, Data_Structure_I_Day_6_String, Programming_Skills_I_Day_11_Containers_&_Libraries	2	98.88
0241	Different Ways to Add Parentheses	Java	Medium	String, Dynamic_Programming, Math, Recursion, Memoization	2	81.46
0240	Search a 2D Matrix II	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Matrix, Divide_and_Conquer, Data_Structure_II_Day_4_Array, Binary_Search_II_Day_8	9	71.40
0239	Sliding Window Maximum	Java	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Array, Heap_Priority_Queue, Sliding_Window, Queue, Monotonic_Queue	25	95.01
0238	Product of Array Except Self	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Prefix_Sum, Data_Structure_II_Day_5_Array	1	100.00
0237	Delete Node in a Linked List	Java	Easy	Top_Interview_Questions, Linked_List	0	100.00
0236	Lowest Common Ancestor of a Binary Tree	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Data_Structure_II_Day_18_Tree	11	46.61
0235	Lowest Common Ancestor of a Binary Search Tree	Java	Easy	Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Data_Structure_I_Day_14_Tree	7	52.79
0234	Palindrome Linked List	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Two_Pointers, Stack, Linked_List, Recursion	5	89.76
0233	Number of Digit One	Java	Hard	Dynamic_Programming, Math, Recursion	0	100.00
0232	Implement Queue using Stacks	Java	Easy	Stack, Design, Queue, Data_Structure_I_Day_9_Stack_Queue, Programming_Skills_I_Day_11_Containers_&_Libraries	1	56.63
0231	Power of Two	Java	Easy	Math, Bit_Manipulation, Recursion, Algorithm_I_Day_13_Bit_Manipulation	1	95.76
0230	Kth Smallest Element in a BST	Java	Medium	Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Data_Structure_II_Day_17_Tree	0	100.00
0229	Majority Element II	Java	Medium	Array, Hash_Table, Sorting, Counting	2	91.84
0228	Summary Ranges	Java	Easy	Array	0	100.00
0227	Basic Calculator II	Java	Medium	Top_Interview_Questions, String, Math, Stack	9	88.15
0226	Invert Binary Tree	Java	Easy	Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_12_Tree	0	100.00
0225	Implement Stack using Queues	Java	Easy	Stack, Design, Queue	0	100.00
0224	Basic Calculator	Java	Hard	String, Math, Stack, Recursion	3	98.82
0223	Rectangle Area	Java	Medium	Math, Geometry	2	99.58
0222	Count Complete Tree Nodes	Java	Medium	Depth_First_Search, Tree, Binary_Search, Binary_Tree, Binary_Search_II_Day_10	0	100.00
0221	Maximal Square	Java	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Matrix, Dynamic_Programming_I_Day_16	6	80.89
0220	Contains Duplicate III	Java	Medium	Array, Sorting, Sliding_Window, Ordered_Set, Bucket_Sort	46	62.24
0219	Contains Duplicate II	Java	Easy	Array, Hash_Table, Sliding_Window	44	42.18
0218	The Skyline Problem	Java	Hard	Top_Interview_Questions, Array, Heap_Priority_Queue, Ordered_Set, Divide_and_Conquer, Segment_Tree, Binary_Indexed_Tree, Line_Sweep	21	80.36
0217	Contains Duplicate	Java	Easy	Top_Interview_Questions, Array, Hash_Table, Sorting, Data_Structure_I_Day_1_Array, Programming_Skills_I_Day_11_Containers_&_Libraries	27	16.94
0216	Combination Sum III	Java	Medium	Array, Backtracking	1	78.74
0215	Kth Largest Element in an Array	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Heap_Priority_Queue, Divide_and_Conquer, Quickselect, Data_Structure_II_Day_20_Heap_Priority_Queue	2	93.01
0214	Shortest Palindrome	Java	Hard	String, Hash_Function, String_Matching, Rolling_Hash	3	94.71
0213	House Robber II	Java	Medium	Array, Dynamic_Programming, Algorithm_II_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_3	1	31.05
0212	Word Search II	Java	Hard	Top_Interview_Questions, Array, String, Matrix, Backtracking, Trie	20	96.11
0211	Design Add and Search Words Data Structure	Java	Medium	String, Depth_First_Search, Design, Trie	403	18.89
0210	Course Schedule II	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort	7	74.90
0209	Minimum Size Subarray Sum	Java	Medium	Array, Binary_Search, Prefix_Sum, Sliding_Window, Algorithm_II_Day_5_Sliding_Window, Binary_Search_II_Day_1	1	99.98
0208	Implement Trie (Prefix Tree)	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Design, Trie	63	55.40
0207	Course Schedule	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort	2	99.76
0206	Reverse Linked List	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Data_Structure_I_Day_8_Linked_List, Algorithm_I_Day_10_Recursion_Backtracking	0	100.00
0205	Isomorphic Strings	Java	Easy	String, Hash_Table	1	100.00
0204	Count Primes	Java	Medium	Top_Interview_Questions, Array, Math, Enumeration, Number_Theory	146	72.74
0203	Remove Linked List Elements	Java	Easy	Linked_List, Recursion, Data_Structure_I_Day_7_Linked_List	1	90.35
0202	Happy Number	Java	Easy	Top_Interview_Questions, Hash_Table, Math, Two_Pointers, Algorithm_II_Day_21_Others, Programming_Skills_I_Day_4_Loop	1	93.34
0201	Bitwise AND of Numbers Range	Java	Medium	Bit_Manipulation, Algorithm_II_Day_19_Bit_Manipulation	10	40.99
0200	Number of Islands	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Algorithm_II_Day_6_Breadth_First_Search_Depth_First_Search, Graph_Theory_I_Day_1_Matrix_Related_Problems	4	73.02
0199	Binary Tree Right Side View	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_II_Day_16_Tree	1	92.96
0198	House Robber	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Algorithm_I_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_3	0	100.00
0197	Rising Temperature	Sql	Easy	Database, SQL_I_Day_6_Union	401	79.45
0196	Delete Duplicate Emails	Sql	Easy	Database, SQL_I_Day_2_Select_&_Order	541	81.09
0195	Tenth Line	Shell	Easy	Shell	4	93.33
0194	Transpose File	Shell	Medium	Shell	0	100.00
0193	Valid Phone Numbers	Shell	Easy	Shell	129	42.86
0192	Word Frequency	Shell	Medium	Shell	152	38.56
0191	Number of 1 Bits	Java	Easy	Top_Interview_Questions, Bit_Manipulation, Algorithm_I_Day_13_Bit_Manipulation, Programming_Skills_I_Day_2_Operator	0	100.00
0190	Reverse Bits	Java	Easy	Top_Interview_Questions, Bit_Manipulation, Divide_and_Conquer, Algorithm_I_Day_14_Bit_Manipulation	1	89.07
0189	Rotate Array	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Two_Pointers, Algorithm_I_Day_2_Two_Pointers	1	83.21
0188	Best Time to Buy and Sell Stock IV	Java	Hard	Array, Dynamic_Programming	2	92.32
0187	Repeated DNA Sequences	Java	Medium	String, Hash_Table, Bit_Manipulation, Sliding_Window, Hash_Function, Rolling_Hash, Data_Structure_II_Day_9_String	32	67.58
0185	Department Top Three Salaries	Sql	Hard	Database	763	63.69
0184	Department Highest Salary	Sql	Medium	Database	576	64.14
0183	Customers Who Never Order	Sql	Easy	Database, SQL_I_Day_1_Select	581	23.03
0182	Duplicate Emails	Sql	Easy	Database, SQL_I_Day_10_Where	345	59.47
0181	Employees Earning More Than Their Managers	Sql	Easy	Database	385	52.30
0180	Consecutive Numbers	Sql	Medium	Database	636	19.31
0179	Largest Number	Java	Medium	Top_Interview_Questions, String, Sorting, Greedy	11	45.93
0178	Rank Scores	Sql	Medium	Database	299	52.08
0177	Nth Highest Salary	Sql	Medium	Database	328	65.32
0176	Second Highest Salary	Sql	Medium	Database, SQL_I_Day_4_Union_&_Select	203	63.47
0175	Combine Two Tables	Sql	Easy	Database, SQL_I_Day_5_Union	449	30.35
0174	Dungeon Game	Java	Hard	Array, Dynamic_Programming, Matrix	1	96.60
0173	Binary Search Tree Iterator	Java	Medium	Tree, Binary_Tree, Stack, Design, Binary_Search_Tree, Iterator, Data_Structure_II_Day_17_Tree, Programming_Skills_II_Day_16	18	78.45
0172	Factorial Trailing Zeroes	Java	Medium	Top_Interview_Questions, Math	1	81.96
0171	Excel Sheet Column Number	Java	Easy	Top_Interview_Questions, String, Math	3	24.67
0169	Majority Element	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Sorting, Counting, Divide_and_Conquer, Data_Structure_II_Day_1_Array	2	83.81
0168	Excel Sheet Column Title	Java	Easy	String, Math	0	100.00
0167	Two Sum II - Input Array Is Sorted	Java	Medium	Array, Binary_Search, Two_Pointers, Algorithm_I_Day_3_Two_Pointers, Binary_Search_I_Day_7	2	49.88
0166	Fraction to Recurring Decimal	Java	Medium	Top_Interview_Questions, String, Hash_Table, Math	4	33.10
0165	Compare Version Numbers	Java	Medium	String, Two_Pointers	1	90.80
0164	Maximum Gap	Java	Hard	Array, Sorting, Bucket_Sort, Radix_Sort	36	66.54
0162	Find Peak Element	Java	Medium	Top_Interview_Questions, Array, Binary_Search, Algorithm_II_Day_2_Binary_Search, Binary_Search_II_Day_12	0	100.00
0160	Intersection of Two Linked Lists	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Data_Structure_II_Day_11_Linked_List	2	61.05
0155	Min Stack	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Stack, Design, Data_Structure_II_Day_14_Stack_Queue, Programming_Skills_II_Day_18	5	81.77
0154	Find Minimum in Rotated Sorted Array II	Java	Hard	Array, Binary_Search, Binary_Search_II_Day_13	0	100.00
0153	Find Minimum in Rotated Sorted Array	Java	Medium	Top_100_Liked_Questions, Array, Binary_Search, Algorithm_II_Day_2_Binary_Search, Binary_Search_I_Day_12	0	100.00
0152	Maximum Product Subarray	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Dynamic_Programming_I_Day_6	0	100.00
0151	Reverse Words in a String	Java	Medium	String, Two_Pointers	3	96.37
0150	Evaluate Reverse Polish Notation	Java	Medium	Top_Interview_Questions, Array, Math, Stack, Programming_Skills_II_Day_3	12	29.56
0149	Max Points on a Line	Java	Hard	Top_Interview_Questions, Array, Hash_Table, Math, Geometry, Algorithm_II_Day_21_Others	4	98.44
0148	Sort List	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Sorting, Two_Pointers, Linked_List, Divide_and_Conquer, Merge_Sort	8	78.95
0147	Insertion Sort List	Java	Medium	Sorting, Linked_List	3	92.25
0146	LRU Cache	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Design, Linked_List, Doubly_Linked_List	82	59.12
0145	Binary Tree Postorder Traversal	Java	Easy	Depth_First_Search, Tree, Binary_Tree, Stack, Data_Structure_I_Day_10_Tree	1	42.74
0144	Binary Tree Preorder Traversal	Java	Easy	Depth_First_Search, Tree, Binary_Tree, Stack, Data_Structure_I_Day_10_Tree	1	42.23
0143	Reorder List	Java	Medium	Two_Pointers, Stack, Linked_List, Recursion, Data_Structure_II_Day_13_Linked_List, Programming_Skills_II_Day_14	2	72.16
0142	Linked List Cycle II	Java	Medium	Top_100_Liked_Questions, Hash_Table, Two_Pointers, Linked_List, Data_Structure_II_Day_10_Linked_List	0	100.00
0141	Linked List Cycle	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Data_Structure_I_Day_7_Linked_List	0	100.00
0140	Word Break II	Java	Hard	Top_Interview_Questions, String, Hash_Table, Dynamic_Programming, Backtracking, Trie, Memoization	1	95.98
0139	Word Break	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Dynamic_Programming, Trie, Memoization, Algorithm_II_Day_15_Dynamic_Programming, Dynamic_Programming_I_Day_9	2	96.55
0138	Copy List with Random Pointer	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Linked_List, Programming_Skills_II_Day_14	0	100.00
0137	Single Number II	Java	Medium	Array, Bit_Manipulation	1	91.46
0136	Single Number	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Data_Structure_II_Day_1_Array, Algorithm_I_Day_14_Bit_Manipulation	2	58.97
0135	Candy	Java	Hard	Array, Greedy	3	76.49
0134	Gas Station	Java	Medium	Top_Interview_Questions, Array, Greedy	3	61.54
0133	Clone Graph	Java	Medium	Hash_Table, Depth_First_Search, Breadth_First_Search, Graph	55	16.92
0132	Palindrome Partitioning II	Java	Hard	String, Dynamic_Programming	2	99.72
0131	Palindrome Partitioning	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Backtracking	19	53.74
0130	Surrounded Regions	Java	Medium	Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Algorithm_II_Day_8_Breadth_First_Search_Depth_First_Search	2	80.58
0129	Sum Root to Leaf Numbers	Java	Medium	Depth_First_Search, Tree, Binary_Tree	0	100.00
0128	Longest Consecutive Sequence	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Union_Find	17	84.46
0127	Word Ladder	Java	Hard	Top_Interview_Questions, String, Hash_Table, Breadth_First_Search, Graph_Theory_I_Day_12_Breadth_First_Search	32	94.39
0126	Word Ladder II	Java	Hard	String, Hash_Table, Breadth_First_Search, Backtracking	4	99.18
0125	Valid Palindrome	Java	Easy	Top_Interview_Questions, String, Two_Pointers	3	88.82
0124	Binary Tree Maximum Path Sum	Java	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Depth_First_Search, Tree, Binary_Tree	1	76.01
0123	Best Time to Buy and Sell Stock III	Java	Hard	Array, Dynamic_Programming	1	100.00
0122	Best Time to Buy and Sell Stock II	Java	Medium	Top_Interview_Questions, Array, Dynamic_Programming, Greedy, Dynamic_Programming_I_Day_7	2	34.31
0121	Best Time to Buy and Sell Stock	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Data_Structure_I_Day_3_Array, Dynamic_Programming_I_Day_7	2	85.25
0120	Triangle	Java	Medium	Array, Dynamic_Programming, Algorithm_I_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_13	1	99.76
0119	Pascal's Triangle II	Java	Easy	Array, Dynamic_Programming, Data_Structure_II_Day_3_Array, Dynamic_Programming_I_Day_12	0	100.00
0118	Pascal's Triangle	Java	Easy	Top_Interview_Questions, Array, Dynamic_Programming, Data_Structure_I_Day_4_Array, Dynamic_Programming_I_Day_12	1	62.34
0117	Populating Next Right Pointers in Each Node II	Java	Medium	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Linked_List, Algorithm_II_Day_7_Breadth_First_Search_Depth_First_Search	0	100.00
0116	Populating Next Right Pointers in Each Node	Java	Medium	Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Linked_List, Algorithm_I_Day_8_Breadth_First_Search_Depth_First_Search	0	100.00
0115	Distinct Subsequences	Java	Hard	String, Dynamic_Programming	3	99.53
0114	Flatten Binary Tree to Linked List	Java	Medium	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Stack, Linked_List	1	69.36
0113	Path Sum II	Java	Medium	Depth_First_Search, Tree, Binary_Tree, Backtracking, Data_Structure_II_Day_16_Tree	1	100.00
0112	Path Sum	Java	Easy	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_12_Tree	0	100.00
0111	Minimum Depth of Binary Tree	Java	Easy	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	1	94.17
0110	Balanced Binary Tree	Java	Easy	Depth_First_Search, Tree, Binary_Tree, Programming_Skills_II_Day_2	0	100.00
0109	Convert Sorted List to Binary Search Tree	Java	Medium	Tree, Binary_Tree, Linked_List, Binary_Search_Tree, Divide_and_Conquer	1	80.17
0108	Convert Sorted Array to Binary Search Tree	Java	Easy	Top_Interview_Questions, Array, Tree, Binary_Tree, Binary_Search_Tree, Divide_and_Conquer, Data_Structure_II_Day_15_Tree	0	100.00
0107	Binary Tree Level Order Traversal II	Java	Medium	Breadth_First_Search, Tree, Binary_Tree	1	93.94
0106	Construct Binary Tree from Inorder and Postorder Traversal	Java	Medium	Array, Hash_Table, Tree, Binary_Tree, Divide_and_Conquer	1	99.20
0105	Construct Binary Tree from Preorder and Inorder Traversal	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Tree, Binary_Tree, Divide_and_Conquer, Data_Structure_II_Day_15_Tree	1	99.69
0104	Maximum Depth of Binary Tree	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_11_Tree, Programming_Skills_I_Day_10_Linked_List_&_Tree	0	100.00
0103	Binary Tree Zigzag Level Order Traversal	Java	Medium	Top_Interview_Questions, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_II_Day_15_Tree	1	86.98
0102	Binary Tree Level Order Traversal	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_11_Tree	0	100.00
0101	Symmetric Tree	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_11_Tree	0	100.00
0100	Same Tree	Java	Easy	Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree	0	100.00
0099	Recover Binary Search Tree	Java	Medium	Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree	3	71.74
0098	Validate Binary Search Tree	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Data_Structure_I_Day_14_Tree	0	100.00
0097	Interleaving String	Java	Medium	String, Dynamic_Programming	1	96.15
0096	Unique Binary Search Trees	Java	Medium	Top_100_Liked_Questions, Dynamic_Programming, Math, Tree, Binary_Tree, Binary_Search_Tree, Dynamic_Programming_I_Day_11	0	100.00
0095	Unique Binary Search Trees II	Java	Medium	Dynamic_Programming, Tree, Binary_Tree, Backtracking, Binary_Search_Tree	1	97.38
0094	Binary Tree Inorder Traversal	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Stack, Data_Structure_I_Day_10_Tree	0	100.00
0093	Restore IP Addresses	Java	Medium	String, Backtracking	12	26.89
0092	Reverse Linked List II	Java	Medium	Linked_List	0	100.00
0091	Decode Ways	Java	Medium	Top_Interview_Questions, String, Dynamic_Programming, Algorithm_II_Day_15_Dynamic_Programming, Dynamic_Programming_I_Day_10	2	64.33
0090	Subsets II	Java	Medium	Array, Bit_Manipulation, Backtracking, Algorithm_II_Day_9_Recursion_Backtracking	2	75.68
0089	Gray Code	Java	Medium	Math, Bit_Manipulation, Backtracking	2	99.93
0088	Merge Sorted Array	Java	Easy	Top_Interview_Questions, Array, Sorting, Two_Pointers, Data_Structure_I_Day_2_Array	0	100.00
0087	Scramble String	Java	Hard	String, Dynamic_Programming	23	54.15
0086	Partition List	Java	Medium	Two_Pointers, Linked_List	1	59.29
0085	Maximal Rectangle	Java	Hard	Top_100_Liked_Questions, Array, Dynamic_Programming, Matrix, Stack, Monotonic_Stack	4	95.78
0084	Largest Rectangle in Histogram	Java	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Array, Stack, Monotonic_Stack	11	94.31
0083	Remove Duplicates from Sorted List	Java	Easy	Linked_List, Data_Structure_I_Day_8_Linked_List	0	100.00
0082	Remove Duplicates from Sorted List II	Java	Medium	Two_Pointers, Linked_List, Data_Structure_II_Day_11_Linked_List, Algorithm_II_Day_3_Two_Pointers	1	70.85
0081	Search in Rotated Sorted Array II	Java	Medium	Array, Binary_Search, Binary_Search_II_Day_12	1	73.34
0080	Remove Duplicates from Sorted Array II	Java	Medium	Array, Two_Pointers	1	77.11
0079	Word Search	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Matrix, Backtracking, Algorithm_II_Day_11_Recursion_Backtracking	178	45.01
0078	Subsets	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Backtracking, Algorithm_II_Day_9_Recursion_Backtracking	1	79.43
0077	Combinations	Java	Medium	Backtracking, Algorithm_I_Day_11_Recursion_Backtracking	5	89.72
0076	Minimum Window Substring	Java	Hard	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window	3	98.09
0075	Sort Colors	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Data_Structure_II_Day_2_Array	1	33.23
0074	Search a 2D Matrix	Java	Medium	Top_100_Liked_Questions, Array, Binary_Search, Matrix, Data_Structure_I_Day_5_Array, Algorithm_II_Day_1_Binary_Search, Binary_Search_I_Day_8	0	100.00
0073	Set Matrix Zeroes	Java	Medium	Top_Interview_Questions, Array, Hash_Table, Matrix	2	60.26
0072	Edit Distance	Java	Hard	Top_100_Liked_Questions, String, Dynamic_Programming, Algorithm_II_Day_18_Dynamic_Programming, Dynamic_Programming_I_Day_19	7	66.86
0071	Simplify Path	Java	Medium	String, Stack	4	87.52
0070	Climbing Stairs	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Algorithm_I_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_2	0	100.00
0069	Sqrt(x)	Java	Easy	Top_Interview_Questions, Math, Binary_Search, Binary_Search_I_Day_4	1	99.48
0068	Text Justification	Java	Hard	Array, String, Simulation	1	77.17
0067	Add Binary	Java	Easy	String, Math, Bit_Manipulation, Simulation, Programming_Skills_II_Day_5	3	67.14
0066	Plus One	Java	Easy	Top_Interview_Questions, Array, Math, Programming_Skills_II_Day_3	0	100.00
0065	Valid Number	Java	Hard	String	4	46.38
0064	Minimum Path Sum	Java	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Matrix, Dynamic_Programming_I_Day_16	1	99.65
0063	Unique Paths II	Java	Medium	Array, Dynamic_Programming, Matrix, Dynamic_Programming_I_Day_15	1	56.99
0062	Unique Paths	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Combinatorics, Algorithm_II_Day_13_Dynamic_Programming, Dynamic_Programming_I_Day_15	1	45.44
0061	Rotate List	Java	Medium	Two_Pointers, Linked_List, Programming_Skills_II_Day_16	0	100.00
0060	Permutation Sequence	Java	Hard	Math, Recursion	0	100.00
0059	Spiral Matrix II	Java	Medium	Array, Matrix, Simulation, Data_Structure_II_Day_3_Array	0	100.00
0058	Length of Last Word	Java	Easy	String, Programming_Skills_II_Day_6	0	100.00
0057	Insert Interval	Java	Medium	Array	1	99.15
0056	Merge Intervals	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Data_Structure_II_Day_2_Array	22	12.57
0055	Jump Game	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Greedy, Algorithm_II_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_4	2	87.28
0054	Spiral Matrix	Java	Medium	Top_Interview_Questions, Array, Matrix, Simulation, Programming_Skills_II_Day_8	0	100.00
0053	Maximum Subarray	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Divide_and_Conquer, Data_Structure_I_Day_1_Array, Dynamic_Programming_I_Day_5	1	100.00
0052	N-Queens II	Java	Hard	Backtracking	1	95.66
0051	N-Queens	Java	Hard	Array, Backtracking	3	87.94
0050	Pow(x, n)	Java	Medium	Top_Interview_Questions, Math, Recursion	1	71.59
0049	Group Anagrams	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sorting, Data_Structure_II_Day_8_String, Programming_Skills_II_Day_11	10	74.79
0048	Rotate Image	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Matrix, Data_Structure_II_Day_3_Array, Programming_Skills_II_Day_7	0	100.00
0047	Permutations II	Java	Medium	Array, Backtracking, Algorithm_II_Day_10_Recursion_Backtracking	2	86.24
0046	Permutations	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Backtracking, Algorithm_I_Day_11_Recursion_Backtracking	2	71.89
0045	Jump Game II	Java	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Greedy, Algorithm_II_Day_13_Dynamic_Programming, Dynamic_Programming_I_Day_4	1	99.67
0044	Wildcard Matching	Java	Hard	Top_Interview_Questions, String, Dynamic_Programming, Greedy, Recursion	4	92.10
0043	Multiply Strings	Java	Medium	String, Math, Simulation, Data_Structure_II_Day_8_String, Programming_Skills_II_Day_4	3	96.85
0042	Trapping Rain Water	Java	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Two_Pointers, Stack, Monotonic_Stack, Dynamic_Programming_I_Day_9	1	92.60
0041	First Missing Positive	Java	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table	3	85.60
0040	Combination Sum II	Java	Medium	Array, Backtracking, Algorithm_II_Day_10_Recursion_Backtracking	4	82.05
0039	Combination Sum	Java	Medium	Top_100_Liked_Questions, Array, Backtracking, Algorithm_II_Day_10_Recursion_Backtracking	1	100.00
0038	Count and Say	Java	Medium	Top_Interview_Questions, String	3	84.24
0037	Sudoku Solver	Java	Hard	Array, Matrix, Backtracking	6	88.24
0036	Valid Sudoku	Java	Medium	Top_Interview_Questions, Array, Hash_Table, Matrix, Data_Structure_I_Day_5_Array	2	92.22
0035	Search Insert Position	Java	Easy	Top_100_Liked_Questions, Array, Binary_Search, Algorithm_I_Day_1_Binary_Search, Binary_Search_I_Day_2	0	100.00
0034	Find First and Last Position of Element in Sorted Array	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Algorithm_II_Day_1_Binary_Search, Binary_Search_I_Day_5	1	30.87
0033	Search in Rotated Sorted Array	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Algorithm_II_Day_1_Binary_Search, Binary_Search_I_Day_11	0	100.00
0032	Longest Valid Parentheses	Java	Hard	Top_100_Liked_Questions, String, Dynamic_Programming, Stack	2	89.17
0031	Next Permutation	Java	Medium	Top_100_Liked_Questions, Array, Two_Pointers	1	74.73
0030	Substring with Concatenation of All Words	Java	Hard	String, Hash_Table, Sliding_Window	7	98.08
0029	Divide Two Integers	Java	Medium	Top_Interview_Questions, Math, Bit_Manipulation	3	33.42
0028	Implement strStr()	Java	Easy	Top_Interview_Questions, String, Two_Pointers, String_Matching, Programming_Skills_II_Day_1	462	62.14
0027	Remove Element	Java	Easy	Array, Two_Pointers	0	100.00
0026	Remove Duplicates from Sorted Array	Java	Easy	Top_Interview_Questions, Array, Two_Pointers	1	88.35
0025	Reverse Nodes in k-Group	Java	Hard	Top_100_Liked_Questions, Linked_List, Recursion, Data_Structure_II_Day_13_Linked_List	0	100.00
0024	Swap Nodes in Pairs	Java	Medium	Top_100_Liked_Questions, Linked_List, Recursion, Data_Structure_II_Day_12_Linked_List	0	100.00
0023	Merge k Sorted Lists	Java	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Heap_Priority_Queue, Linked_List, Divide_and_Conquer, Merge_Sort	1	100.00
0022	Generate Parentheses	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Backtracking, Algorithm_II_Day_11_Recursion_Backtracking	1	87.91
0021	Merge Two Sorted Lists	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Data_Structure_I_Day_7_Linked_List, Algorithm_I_Day_10_Recursion_Backtracking	1	61.88
0020	Valid Parentheses	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, String, Stack, Data_Structure_I_Day_9_Stack_Queue	3	53.65
0019	Remove Nth Node From End of List	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Two_Pointers, Linked_List, Algorithm_I_Day_5_Two_Pointers	1	56.40
0018	4Sum	Java	Medium	Array, Sorting, Two_Pointers	24	60.61
0017	Letter Combinations of a Phone Number	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Backtracking, Algorithm_II_Day_11_Recursion_Backtracking	1	87.99
0016	3Sum Closest	Java	Medium	Array, Sorting, Two_Pointers	3	99.31
0015	3Sum	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Data_Structure_II_Day_1_Array, Algorithm_II_Day_3_Two_Pointers	29	68.11
0014	Longest Common Prefix	Java	Easy	Top_Interview_Questions, String	1	79.65
0013	Roman to Integer	Java	Easy	Top_Interview_Questions, String, Hash_Table, Math	5	82.08
0012	Integer to Roman	Java	Medium	String, Hash_Table, Math	7	70.99
0011	Container With Most Water	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Greedy, Two_Pointers, Algorithm_II_Day_4_Two_Pointers	3	91.89
0010	Regular Expression Matching	Java	Hard	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Recursion	1	100.00
0009	Palindrome Number	Java	Easy	Math	6	99.98
0008	String to Integer (atoi)	Java	Medium	Top_Interview_Questions, String	2	83.27
0007	Reverse Integer	Java	Medium	Top_Interview_Questions, Math	2	66.13
0006	Zigzag Conversion	Java	Medium	String	4	92.78
0005	Longest Palindromic Substring	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Data_Structure_II_Day_9_String, Algorithm_II_Day_14_Dynamic_Programming, Dynamic_Programming_I_Day_17	8	98.93
0004	Median of Two Sorted Arrays	Java	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Divide_and_Conquer	3	79.08
0003	Longest Substring Without Repeating Characters	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Algorithm_I_Day_6_Sliding_Window	3	95.99
0002	Add Two Numbers	Java	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Math, Linked_List, Recursion, Data_Structure_II_Day_10_Linked_List, Programming_Skills_II_Day_15	1	100.00
0001	Two Sum	Java	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Data_Structure_I_Day_2_Array	3	80.08

Contributing

Your ideas/fixes/algorithms are more than welcome!

Fork this repo
Clone your forked repo (git clone https://github.com/YOUR_GITHUB_USERNAME/LeetCode-in-Java.git) onto your local machine
cd into your cloned directory, create your feature branch (git checkout -b my-awesome-fix)
git add your desired changes to this repo
Commit your changes (git commit -m 'Added some awesome features/fixes')
Push to the branch (git push origin my-awesome-feature)
Open your forked repo on Github website, create a new Pull Request to this repo!

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