|
796 | 796 | | 20 |[Valid Parentheses](https://leetcode.com/problems/valid-parentheses/) |[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_20.java) |[:tv:](https://www.youtube.com/watch?v=eBbg5pnq5Zg) | Easy | Stack |
797 | 797 | | 19 |[Remove Nth Node From End of List](https://leetcode.com/problems/remove-nth-node-from-end-of-list/) |[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_19.java) |[:tv:](https://youtu.be/Kka8VgyFZfc) | Medium | Linked List |
798 | 798 | | 18 |[4 Sum](https://leetcode.com/problems/4sum/) |[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_18.java) || Medium | Two Pointers |
799 | | -| 17 |[Letter Combinations of a Phone Number](https://leetcode.com/problems/letter-combinations-of-a-phone-number/) |[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_17.java),[Javascript](https://github.com/sambabib/Leetcode/blob/sambabib-js-solutions/javascript/_17.js) || Medium | Backtracking |
| 799 | +| 17 |[Letter Combinations of a Phone Number](https://leetcode.com/problems/letter-combinations-of-a-phone-number/) |[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_17.java),[Javascript](https://github.com/fishercoder1534/Leetcode/blob/master/javascript/_17.js) || Medium | Backtracking |
800 | 800 | | 16 |[3Sum Closest](https://leetcode.com/problems/3sum-closest/) |[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_16.java) || Medium | Two Pointers |
801 | 801 | | 15 |[3Sum](https://leetcode.com/problems/3sum/) |[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_15.java),[C++](../master/cpp/_15.cpp) |[:tv:](https://www.youtube.com/watch?v=jeim_j8VdiM) | Medium | Two Pointers, Binary Search |
802 | 802 | | 14 |[Longest Common Prefix](https://leetcode.com/problems/longest-common-prefix/) |[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_14.java) |[:tv:](https://www.youtube.com/watch?v=K1ps6d7YCy4) | Easy |
|
810 | 810 | | 6|[ZigZag Conversion](https://leetcode.com/problems/zigzag-conversion/)|[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_6.java)|| Easy| |
811 | 811 | | 5|[Longest Palindromic Substring](https://leetcode.com/problems/longest-palindromic-substring/)|[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_5.java)|| Medium| |
812 | 812 | | 4 |[Median of Two Sorted Arrays](https://leetcode.com/problems/median-of-two-sorted-arrays/) |[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_4.java),[C++](../master/cpp/_4.cpp) | | Hard | Divide and Conquer |
813 | | -| 3 |[Longest Substring Without Repeating Characters](https://leetcode.com/problems/longest-substring-without-repeating-characters/) |[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_3.java),[C++](../master/cpp/_3.cpp),[Javascript](https://github.com/sambabib/Leetcode/blob/sambabib-js-solutions/javascript/_3.js) | | Medium | HashMap, Sliding Window |
| 813 | +| 3 |[Longest Substring Without Repeating Characters](https://leetcode.com/problems/longest-substring-without-repeating-characters/) |[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_3.java),[C++](../master/cpp/_3.cpp),[Javascript](https://github.com/fishercoder1534/Leetcode/blob/master/javascript/_3.js) | | Medium | HashMap, Sliding Window |
814 | 814 | | 2 |[Add Two Numbers](https://leetcode.com/problems/add-two-numbers/) |[Solution](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_2.java) | | Medium | LinkedList |
815 | 815 | | 1 |[Two Sum](https://leetcode.com/problems/two-sum/) |[Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/firstthousand/_1.java),[C++](../master/cpp/_1.cpp),[Javascript](../master/javascript/_1.js) |[:tv:](https://www.youtube.com/watch?v=kPXOr6pW8KM&t=) | Easy | HashMap |
