|
2 | 2 |
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3 | 3 | |题目|出现次数|链接| |
4 | 4 | |-|-|-| |
5 | | -|232. 用栈实现队列|7|https://leetcode-cn.com/problems/implement-queue-using-stacks| |
6 | | -|160. 相交链表|6|https://leetcode-cn.com/problems/intersection-of-two-linked-lists| |
7 | | -|21. 合并两个有序链表|5|https://leetcode-cn.com/problems/merge-two-sorted-lists| |
| 5 | +|232. 用栈实现队列|10|https://leetcode-cn.com/problems/implement-queue-using-stacks| |
| 6 | +|160. 相交链表|8|https://leetcode-cn.com/problems/intersection-of-two-linked-lists| |
| 7 | +|1. 两数之和|7|https://leetcode-cn.com/problems/two-sum| |
| 8 | +|21. 合并两个有序链表|7|https://leetcode-cn.com/problems/merge-two-sorted-lists| |
| 9 | +|179. 最大数|5|https://leetcode-cn.com/problems/largest-number| |
8 | 10 | |704. 二分查找|5|https://leetcode-cn.com/problems/binary-search| |
9 | | -|1. 两数之和|5|https://leetcode-cn.com/problems/two-sum| |
| 11 | +|146. LRU缓存机制|5|https://leetcode-cn.com/problems/lru-cache| |
10 | 12 | |226. 翻转二叉树|4|https://leetcode-cn.com/problems/invert-binary-tree| |
11 | | -|2. 两数相加|4|https://leetcode-cn.com/problems/add-two-numbers| |
12 | 13 | |206. 反转链表|4|https://leetcode-cn.com/problems/reverse-linked-list| |
13 | | -|179. 最大数|3|https://leetcode-cn.com/problems/largest-number| |
| 14 | +|2. 两数相加|4|https://leetcode-cn.com/problems/add-two-numbers| |
| 15 | +|82. 删除排序链表中的重复元素 II|4|https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list-ii| |
| 16 | +|72. 编辑距离|3|https://leetcode-cn.com/problems/edit-distance| |
14 | 17 | |15. 三数之和|3|https://leetcode-cn.com/problems/3sum| |
15 | | -|146. LRU缓存机制|3|https://leetcode-cn.com/problems/lru-cache| |
16 | | -|3. 无重复字符的最长子串|3|https://leetcode-cn.com/problems/longest-substring-without-repeating-characters| |
17 | 18 | |94. 二叉树的中序遍历|3|https://leetcode-cn.com/problems/binary-tree-inorder-traversal| |
18 | | -|102. 二叉树的层序遍历|2|https://leetcode-cn.com/problems/binary-tree-level-order-traversal| |
19 | | -|215. 数组中的第K个最大元素|2|https://leetcode-cn.com/problems/kth-largest-element-in-an-array| |
| 19 | +|34. 在排序数组中查找元素的第一个和最后一个位置|3|https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array| |
| 20 | +|102. 二叉树的层序遍历|3|https://leetcode-cn.com/problems/binary-tree-level-order-traversal| |
| 21 | +|3. 无重复字符的最长子串|3|https://leetcode-cn.com/problems/longest-substring-without-repeating-characters| |
| 22 | +|117. 填充每个节点的下一个右侧节点指针 II|3|https://leetcode-cn.com/problems/populating-next-right-pointers-in-each-node-ii| |
| 23 | +|76. 最小覆盖子串|3|https://leetcode-cn.com/problems/minimum-window-substring| |
| 24 | +|445. 两数相加 II|3|https://leetcode-cn.com/problems/add-two-numbers-ii| |
| 25 | +|19. 删除链表的倒数第N个节点|2|https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list| |
| 26 | +|补充题5. 手撕归并排序|2|https://leetcode-cn.com/problems/sort-an-array| |
| 27 | +|105. 从前序与中序遍历序列构造二叉树|2|https://leetcode-cn.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal| |
| 28 | +|199. 二叉树的右视图|2|https://leetcode-cn.com/problems/binary-tree-right-side-view| |
20 | 29 | |141. 环形链表|2|https://leetcode-cn.com/problems/linked-list-cycle| |
21 | | -|剑指 Offer 22. 链表中倒数第k个节点|2|https://leetcode-cn.com/problems/lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof| |
22 | | -|34. 在排序数组中查找元素的第一个和最后一个位置|2|https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array| |
23 | | -|117. 填充每个节点的下一个右侧节点指针 II|2|https://leetcode-cn.com/problems/populating-next-right-pointers-in-each-node-ii| |
| 30 | +|136. 只出现一次的数字|2|https://leetcode-cn.com/problems/single-number| |
24 | 31 | |剑指 Offer 51. 数组中的逆序对|2|https://leetcode-cn.com/problems/shu-zu-zhong-de-ni-xu-dui-lcof| |
25 | | -|199. 二叉树的右视图|2|https://leetcode-cn.com/problems/binary-tree-right-side-view| |
26 | | -|82. 删除排序链表中的重复元素 II|2|https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list-ii| |
27 | | -|110. 平衡二叉树|2|https://leetcode-cn.com/problems/balanced-binary-tree| |
28 | | -|补充题5. 手撕归并排序|2|https://leetcode-cn.com/problems/sort-an-array| |
| 32 | +|113. 路径总和 II|2|https://leetcode-cn.com/problems/path-sum-ii| |
29 | 33 | |405. 数字转换为十六进制数|2|https://leetcode-cn.com/problems/convert-a-number-to-hexadecimal| |
30 | | -|19. 删除链表的倒数第N个节点|2|https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list| |
31 | | -|227. 基本计算器 II|1|https://leetcode-cn.com/problems/basic-calculator-ii| |
32 | | -|443. 压缩字符串|1|https://leetcode-cn.com/problems/string-compression| |
33 | | -|349. 两个数组的交集|1|https://leetcode-cn.com/problems/intersection-of-two-arrays| |
34 | | -|680. 验证回文字符串 Ⅱ|1|https://leetcode-cn.com/problems/valid-palindrome-ii| |
35 | | -|528. 按权重随机选择|1|https://leetcode-cn.com/problems/random-pick-with-weight| |
36 | | -|208. 实现 Trie (前缀树)|1|https://leetcode-cn.com/problems/implement-trie-prefix-tree| |
37 | | -|225. 用队列实现栈|1|https://leetcode-cn.com/problems/implement-stack-using-queues| |
38 | | -|83. 删除排序链表中的重复元素|1|https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list| |
39 | | -|92. 反转链表 II|1|https://leetcode-cn.com/problems/reverse-linked-list-ii| |
40 | | -|97. 交错字符串|1|https://leetcode-cn.com/problems/interleaving-string| |
41 | | -|300. 最长上升子序列|1|https://leetcode-cn.com/problems/longest-increasing-subsequence| |
42 | | -|169. 多数元素|1|https://leetcode-cn.com/problems/majority-element| |
43 | | -|20. 有效的括号|1|https://leetcode-cn.com/problems/valid-parentheses| |
44 | | -|139. 单词拆分|1|https://leetcode-cn.com/problems/word-break| |
45 | | -|547. 省份数量（原朋友圈）|1|https://leetcode-cn.com/problems/number-of-provinces| |
46 | | -|26. 删除排序数组中的重复项|1|https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array| |
47 | | -|239. 滑动窗口最大值|1|https://leetcode-cn.com/problems/sliding-window-maximum| |
48 | | -|369. 给单链表加一|1|https://leetcode-cn.com/problems/plus-one-linked-list| |
49 | | -|补充题4. 手撕快速排序|1|https://leetcode-cn.com/problems/sort-an-array| |
50 | | -|101. 对称二叉树|1|https://leetcode-cn.com/problems/symmetric-tree| |
51 | | -|62. 不同路径|1|https://leetcode-cn.com/problems/unique-paths| |
52 | | -|54. 螺旋矩阵|1|https://leetcode-cn.com/problems/spiral-matrix| |
| 34 | +|215. 数组中的第K个最大元素|2|https://leetcode-cn.com/problems/kth-largest-element-in-an-array| |
| 35 | +|110. 平衡二叉树|2|https://leetcode-cn.com/problems/balanced-binary-tree| |
| 36 | +|剑指 Offer 22. 链表中倒数第k个节点|2|https://leetcode-cn.com/problems/lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof| |
| 37 | +|239. 滑动窗口最大值|2|https://leetcode-cn.com/problems/sliding-window-maximum| |
| 38 | +|145. 二叉树的后序遍历|2|https://leetcode-cn.com/problems/binary-tree-postorder-traversal| |
| 39 | +|25. K 个一组翻转链表|2|https://leetcode-cn.com/problems/reverse-nodes-in-k-group| |
| 40 | +|236. 二叉树的最近公共祖先|2|https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree| |
53 | 41 | |23. 合并K个排序链表|1|https://leetcode-cn.com/problems/merge-k-sorted-lists| |
54 | | -|72. 编辑距离|1|https://leetcode-cn.com/problems/edit-distance| |
55 | 42 | |53. 最大子序和|1|https://leetcode-cn.com/problems/maximum-subarray| |
56 | 43 | |718. 最长重复子数组|1|https://leetcode-cn.com/problems/maximum-length-of-repeated-subarray| |
57 | 44 | |378. 有序矩阵中第K小的元素|1|https://leetcode-cn.com/problems/kth-smallest-element-in-a-sorted-matrix| |
58 | 45 | |154. 寻找旋转排序数组中的最小值 II|1|https://leetcode-cn.com/problems/find-minimum-in-rotated-sorted-array-ii| |
59 | 46 | |295. 数据流的中位数|1|https://leetcode-cn.com/problems/find-median-from-data-stream| |
60 | 47 | |142. 环形链表 II|1|https://leetcode-cn.com/problems/linked-list-cycle-ii| |
61 | | -|105. 从前序与中序遍历序列构造二叉树|1|https://leetcode-cn.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal| |
62 | 48 | |144. 二叉树的前序遍历|1|https://leetcode-cn.com/problems/binary-tree-preorder-traversal| |
63 | 49 | |42. 接雨水|1|https://leetcode-cn.com/problems/trapping-rain-water| |
64 | 50 | |167. 两数之和 II - 输入有序数组|1|https://leetcode-cn.com/problems/two-sum-ii-input-array-is-sorted| |
65 | | -|402. 移掉K位数字|1|https://leetcode-cn.com/problems/remove-k-digits| |
| 51 | +|54. 螺旋矩阵|1|https://leetcode-cn.com/problems/spiral-matrix| |
66 | 52 | |114. 二叉树展开为链表|1|https://leetcode-cn.com/problems/flatten-binary-tree-to-linked-list| |
67 | 53 | |153. 寻找旋转排序数组中的最小值|1|https://leetcode-cn.com/problems/find-minimum-in-rotated-sorted-array| |
68 | 54 | |剑指 Offer 10- I. 斐波那契数列|1|https://leetcode-cn.com/problems/fei-bo-na-qi-shu-lie-lcof| |
69 | 55 | |88. 合并两个有序数组|1|https://leetcode-cn.com/problems/merge-sorted-array| |
70 | 56 | |5. 最长回文子串|1|https://leetcode-cn.com/problems/longest-palindromic-substring| |
71 | 57 | |230. 二叉搜索树中第K小的元素|1|https://leetcode-cn.com/problems/kth-smallest-element-in-a-bst| |
72 | | -|136. 只出现一次的数字|1|https://leetcode-cn.com/problems/single-number| |
73 | | -|113. 路径总和 II|1|https://leetcode-cn.com/problems/path-sum-ii| |
| 58 | +|300. 最长上升子序列|1|https://leetcode-cn.com/problems/longest-increasing-subsequence| |
74 | 59 | |415. 字符串相加|1|https://leetcode-cn.com/problems/add-strings| |
75 | 60 | |138. 复制带随机指针的链表|1|https://leetcode-cn.com/problems/copy-list-with-random-pointer| |
76 | 61 | |剑指 Offer 62. 圆圈中最后剩下的数字|1|https://leetcode-cn.com/problems/yuan-quan-zhong-zui-hou-sheng-xia-de-shu-zi-lcof| |
77 | | -|98. 验证二叉搜索树|1|https://leetcode-cn.com/problems/validate-binary-search-tree| |
| 62 | +|98. 验证二叉搜索树|1|https://leetcode-cn.com/problems/validate-binary-search-tree| |
| 63 | +|402. 移掉K位数字|1|https://leetcode-cn.com/problems/remove-k-digits| |
| 64 | +|208. 实现 Trie (前缀树)|1|https://leetcode-cn.com/problems/implement-trie-prefix-tree| |
| 65 | +|528. 按权重随机选择|1|https://leetcode-cn.com/problems/random-pick-with-weight| |
| 66 | +|680. 验证回文字符串 Ⅱ|1|https://leetcode-cn.com/problems/valid-palindrome-ii| |
| 67 | +|349. 两个数组的交集|1|https://leetcode-cn.com/problems/intersection-of-two-arrays| |
| 68 | +|443. 压缩字符串|1|https://leetcode-cn.com/problems/string-compression| |
| 69 | +|225. 用队列实现栈|1|https://leetcode-cn.com/problems/implement-stack-using-queues| |
| 70 | +|83. 删除排序链表中的重复元素|1|https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list| |
| 71 | +|92. 反转链表 II|1|https://leetcode-cn.com/problems/reverse-linked-list-ii| |
| 72 | +|97. 交错字符串|1|https://leetcode-cn.com/problems/interleaving-string| |
| 73 | +|227. 基本计算器 II|1|https://leetcode-cn.com/problems/basic-calculator-ii| |
| 74 | +|169. 多数元素|1|https://leetcode-cn.com/problems/majority-element| |
| 75 | +|20. 有效的括号|1|https://leetcode-cn.com/problems/valid-parentheses| |
| 76 | +|139. 单词拆分|1|https://leetcode-cn.com/problems/word-break| |
| 77 | +|547. 省份数量（原朋友圈）|1|https://leetcode-cn.com/problems/number-of-provinces| |
| 78 | +|26. 删除排序数组中的重复项|1|https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array| |
| 79 | +|369. 给单链表加一|1|https://leetcode-cn.com/problems/plus-one-linked-list| |
| 80 | +|补充题4. 手撕快速排序|1|https://leetcode-cn.com/problems/sort-an-array| |
| 81 | +|101. 对称二叉树|1|https://leetcode-cn.com/problems/symmetric-tree| |
| 82 | +|62. 不同路径|1|https://leetcode-cn.com/problems/unique-paths| |
| 83 | +|513. 找树左下角的值|1|https://leetcode-cn.com/problems/find-bottom-left-tree-value| |
| 84 | +|79. 单词搜索|1|https://leetcode-cn.com/problems/word-search| |
| 85 | +|283. 移动零|1|https://leetcode-cn.com/problems/move-zeroes| |
| 86 | +|48. 旋转图像|1|https://leetcode-cn.com/problems/rotate-image| |
| 87 | +|670. 最大交换|1|https://leetcode-cn.com/problems/maximum-swap| |
| 88 | +|703. 数据流中的第K大元素|1|https://leetcode-cn.com/problems/kth-largest-element-in-a-stream| |
| 89 | +|剑指 Offer 27. 二叉树的镜像|1|https://leetcode-cn.com/problems/er-cha-shu-de-jing-xiang-lcof| |
| 90 | +|241. 为运算表达式设计优先级|1|https://leetcode-cn.com/problems/different-ways-to-add-parentheses| |
| 91 | +|746. 使用最小花费爬楼梯|1|https://leetcode-cn.com/problems/min-cost-climbing-stairs| |
| 92 | +|187. 重复的DNA序列|1|https://leetcode-cn.com/problems/repeated-dna-sequences| |
| 93 | +|面试题 01.06. 字符串压缩|1|https://leetcode-cn.com/problems/compress-string-lcci| |
| 94 | +|958. 二叉树的完全性检验|1|https://leetcode-cn.com/problems/check-completeness-of-a-binary-tree| |
| 95 | +|剑指 Offer 33. 二叉搜索树的后序遍历序列|1|https://leetcode-cn.com/problems/er-cha-sou-suo-shu-de-hou-xu-bian-li-xu-lie-lcof| |
| 96 | +|727. 最小窗口子序列|1|https://leetcode-cn.com/problems/minimum-window-subsequence| |
| 97 | +|118. 杨辉三角|1|https://leetcode-cn.com/problems/pascals-triangle| |
| 98 | +|392. 判断子序列|1|https://leetcode-cn.com/problems/is-subsequence| |
| 99 | +|73. 矩阵置零|1|https://leetcode-cn.com/problems/set-matrix-zeroes| |
| 100 | +|47. 全排列 II|1|https://leetcode-cn.com/problems/permutations-ii| |
| 101 | +|31. 下一个排列|1|https://leetcode-cn.com/problems/next-permutation| |
| 102 | +|151. 翻转字符串里的单词|1|https://leetcode-cn.com/problems/reverse-words-in-a-string| |
| 103 | +|200. 岛屿数量|1|https://leetcode-cn.com/problems/number-of-islands| |
| 104 | +|剑指 Offer 48. 最长不含重复字符的子字符串|1|https://leetcode-cn.com/problems/zui-chang-bu-han-zhong-fu-zi-fu-de-zi-zi-fu-chuan-lcof| |
| 105 | +|1038. 从二叉搜索树到更大和树|1|https://leetcode-cn.com/problems/binary-search-tree-to-greater-sum-tree| |
| 106 | +|123. 买卖股票的最佳时机 III|1|https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-iii| |
| 107 | +|257. 二叉树的所有路径|1|https://leetcode-cn.com/problems/binary-tree-paths| |
| 108 | +|75. 颜色分类|1|https://leetcode-cn.com/problems/sort-colors| |
| 109 | +|628. 三个数的最大乘积|1|https://leetcode-cn.com/problems/maximum-product-of-three-numbers| |