| 215. 数组中的第K个最大元素 |
10 |
https://leetcode-cn.com/problems/kth-largest-element-in-an-array |
| 92. 反转链表 II |
7 |
https://leetcode-cn.com/problems/reverse-linked-list-ii |
| 剑指 Offer 36. 二叉搜索树与双向链表 |
7 |
https://leetcode-cn.com/problems/er-cha-sou-suo-shu-yu-shuang-xiang-lian-biao-lcof |
| 98. 验证二叉搜索树 |
7 |
https://leetcode-cn.com/problems/validate-binary-search-tree |
| 148. 排序链表 |
7 |
https://leetcode-cn.com/problems/sort-list |
| 200. 岛屿数量 |
6 |
https://leetcode-cn.com/problems/number-of-islands |
| 328. 奇偶链表 |
6 |
https://leetcode-cn.com/problems/odd-even-linked-list |
| 23. 合并K个排序链表 |
5 |
https://leetcode-cn.com/problems/merge-k-sorted-lists |
| 306. 累加数 |
5 |
https://leetcode-cn.com/problems/additive-number |
| 110. 平衡二叉树 |
5 |
https://leetcode-cn.com/problems/balanced-binary-tree |
| 剑指 Offer 54. 二叉搜索树的第k大节点 |
5 |
https://leetcode-cn.com/problems/er-cha-sou-suo-shu-de-di-kda-jie-dian-lcof |
| 56. 合并区间 |
5 |
https://leetcode-cn.com/problems/merge-intervals |
| 33. 搜索旋转排序数组 |
5 |
https://leetcode-cn.com/problems/search-in-rotated-sorted-array |
| 2. 两数相加 |
5 |
https://leetcode-cn.com/problems/add-two-numbers |
| 146. LRU缓存机制 |
4 |
https://leetcode-cn.com/problems/lru-cache |
| 94. 二叉树的中序遍历 |
4 |
https://leetcode-cn.com/problems/binary-tree-inorder-traversal |
| 93. 复原IP地址 |
4 |
https://leetcode-cn.com/problems/restore-ip-addresses |
| 113. 路径总和 II |
4 |
https://leetcode-cn.com/problems/path-sum-ii |
| 239. 滑动窗口最大值 |
4 |
https://leetcode-cn.com/problems/sliding-window-maximum |
| 958. 二叉树的完全性检验 |
4 |
https://leetcode-cn.com/problems/check-completeness-of-a-binary-tree |
| 543. 二叉树的直径 |
4 |
https://leetcode-cn.com/problems/diameter-of-binary-tree |
| 25. K 个一组翻转链表 |
4 |
https://leetcode-cn.com/problems/reverse-nodes-in-k-group |
| 104. 二叉树的最大深度 |
4 |
https://leetcode-cn.com/problems/maximum-depth-of-binary-tree |
| 222. 完全二叉树的节点个数 |
3 |
https://leetcode-cn.com/problems/count-complete-tree-nodes |
| 83. 删除排序链表中的重复元素 |
3 |
https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list |
| 64. 最小路径和 |
3 |
https://leetcode-cn.com/problems/minimum-path-sum |
| 695. 岛屿的最大面积 |
3 |
https://leetcode-cn.com/problems/max-area-of-island |
| 剑指 Offer 27. 二叉树的镜像 |
3 |
https://leetcode-cn.com/problems/er-cha-shu-de-jing-xiang-lcof |
| 74. 搜索二维矩阵 |
3 |
https://leetcode-cn.com/problems/search-a-2d-matrix |
| 142. 环形链表 II |
3 |
https://leetcode-cn.com/problems/linked-list-cycle-ii |
| 369. 给单链表加一 |
3 |
https://leetcode-cn.com/problems/plus-one-linked-list |
| 189. 旋转数组 |
3 |
https://leetcode-cn.com/problems/rotate-array |
| 32. 最长有效括号 |
3 |
https://leetcode-cn.com/problems/longest-valid-parentheses |
| 498. 对角线遍历 |
3 |
https://leetcode-cn.com/problems/diagonal-traverse |
| 530. 二叉搜索树的最小绝对差 |
3 |
https://leetcode-cn.com/problems/minimum-absolute-difference-in-bst |
| 814. 二叉树剪枝 |
2 |
https://leetcode-cn.com/problems/binary-tree-pruning |
| 22. 括号生成 |
2 |
https://leetcode-cn.com/problems/generate-parentheses |
| 1026. 节点与其祖先之间的最大差值 |
2 |
https://leetcode-cn.com/problems/maximum-difference-between-node-and-ancestor |
| 199. 二叉树的右视图 |
2 |
https://leetcode-cn.com/problems/binary-tree-right-side-view |
| 69. x 的平方根 |
2 |
https://leetcode-cn.com/problems/sqrtx |
| 21. 合并两个有序链表 |
2 |
https://leetcode-cn.com/problems/merge-two-sorted-lists |
| 86. 分隔链表 |
2 |
https://leetcode-cn.com/problems/partition-list |
| 547. 省份数量（原朋友圈） |
2 |
https://leetcode-cn.com/problems/number-of-provinces |
| 662. 二叉树最大宽度 |
2 |
https://leetcode-cn.com/problems/maximum-width-of-binary-tree |
| 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 |
| 674. 最长连续递增序列 |
2 |
https://leetcode-cn.com/problems/longest-continuous-increasing-subsequence |
| 101. 对称二叉树 |
2 |
https://leetcode-cn.com/problems/symmetric-tree |
| 986. 区间列表的交集 |
2 |
https://leetcode-cn.com/problems/interval-list-intersections |
| 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 |
| 54. 螺旋矩阵 |
2 |
https://leetcode-cn.com/problems/spiral-matrix |
| 143. 重排链表 |
2 |
https://leetcode-cn.com/problems/reorder-list |
| 7. 整数反转 |
2 |
https://leetcode-cn.com/problems/reverse-integer |
| 386. 字典序排数 |
2 |
https://leetcode-cn.com/problems/lexicographical-numbers |
| 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 |
| 232. 用栈实现队列 |
2 |
https://leetcode-cn.com/problems/implement-queue-using-stacks |
| 1038. 从二叉搜索树到更大和树 |
2 |
https://leetcode-cn.com/problems/binary-search-tree-to-greater-sum-tree |
| 206. 反转链表 |
2 |
https://leetcode-cn.com/problems/reverse-linked-list |
| 400. 第N个数字 |
2 |
https://leetcode-cn.com/problems/nth-digit |
| 221. 最大正方形 |
2 |
https://leetcode-cn.com/problems/maximal-square |
| 1. 两数之和 |
2 |
https://leetcode-cn.com/problems/two-sum |
| 5. 最长回文子串 |
2 |
https://leetcode-cn.com/problems/longest-palindromic-substring |
| 402. 移掉K位数字 |
2 |
https://leetcode-cn.com/problems/remove-k-digits |
| 52. N皇后 II |
1 |
https://leetcode-cn.com/problems/n-queens-ii |
| 103. 二叉树的锯齿形层次遍历 |
1 |
https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal |
| 8. 字符串转换整数 (atoi) |
1 |
https://leetcode-cn.com/problems/string-to-integer-atoi |
| 145. 二叉树的后序遍历 |
1 |
https://leetcode-cn.com/problems/binary-tree-postorder-traversal |
| 41. 缺失的第一个正数 |
1 |
https://leetcode-cn.com/problems/first-missing-positive |
| 剑指 Offer 45. 把数组排成最小的数 |
1 |
https://leetcode-cn.com/problems/ba-shu-zu-pai-cheng-zui-xiao-de-shu-lcof |
| 226. 翻转二叉树 |
1 |
https://leetcode-cn.com/problems/invert-binary-tree |
| 补充题12. 二叉树的下一个节点 |
1 |
|
| 394. 字符串解码 |
1 |
https://leetcode-cn.com/problems/decode-string |
| 24. 两两交换链表中的节点 |
1 |
https://leetcode-cn.com/problems/swap-nodes-in-pairs |
| 141. 环形链表 |
1 |
https://leetcode-cn.com/problems/linked-list-cycle |
| 442. 数组中重复的数据 |
1 |
https://leetcode-cn.com/problems/find-all-duplicates-in-an-array |
| 补充题4. 手撕快速排序 |
1 |
|
| 14. 最长公共前缀 |
1 |
https://leetcode-cn.com/problems/longest-common-prefix |
| 297. 二叉树的序列化与反序列化 |
1 |
https://leetcode-cn.com/problems/serialize-and-deserialize-binary-tree |
| 242. 有效的字母异位词 |
1 |
https://leetcode-cn.com/problems/valid-anagram |
| 235. 二叉搜索树的最近公共祖先 |
1 |
https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-search-tree |
| 240. 搜索二维矩阵 II |
1 |
https://leetcode-cn.com/problems/search-a-2d-matrix-ii |
| 349. 两个数组的交集 |
1 |
https://leetcode-cn.com/problems/intersection-of-two-arrays |
| 562. 矩阵中最长的连续1线段 |
1 |
https://leetcode-cn.com/problems/longest-line-of-consecutive-one-in-matrix |
| 305. 岛屿数量 II |
1 |
https://leetcode-cn.com/problems/number-of-islands-ii |
| 99. 恢复二叉搜索树 |
1 |
https://leetcode-cn.com/problems/recover-binary-search-tree |
| 108. 将有序数组转换为二叉搜索树 |
1 |
https://leetcode-cn.com/problems/convert-sorted-array-to-binary-search-tree |
| 560. 和为K的子数组 |
1 |
https://leetcode-cn.com/problems/subarray-sum-equals-k |
| 62. 不同路径 |
1 |
https://leetcode-cn.com/problems/unique-paths |
| 26. 删除排序数组中的重复项 |
1 |
https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array |
| 435. 无重叠区间 |
1 |
https://leetcode-cn.com/problems/non-overlapping-intervals |
| 136. 只出现一次的数字 |
1 |
https://leetcode-cn.com/problems/single-number |
| 889. 根据前序和后序遍历构造二叉树 |
1 |
https://leetcode-cn.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal |
| 剑指 Offer 09. 用两个栈实现队列 |
1 |
https://leetcode-cn.com/problems/yong-liang-ge-zhan-shi-xian-dui-lie-lcof |
| 236. 二叉树的最近公共祖先 |
1 |
https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree |
| 329. 矩阵中的最长递增路径 |
1 |
https://leetcode-cn.com/problems/longest-increasing-path-in-a-matrix |
| 102. 二叉树的层序遍历 |
1 |
https://leetcode-cn.com/problems/binary-tree-level-order-traversal |
| 316. 去除重复字母 |
1 |
https://leetcode-cn.com/problems/remove-duplicate-letters |
| 312. 戳气球 |
1 |
https://leetcode-cn.com/problems/burst-balloons |
| 208. 实现 Trie (前缀树) |
1 |
https://leetcode-cn.com/problems/implement-trie-prefix-tree |
| 405. 数字转换为十六进制数 |
1 |
https://leetcode-cn.com/problems/convert-a-number-to-hexadecimal |
| 704. 二分查找 |
1 |
https://leetcode-cn.com/problems/binary-search |
| 20. 有效的括号 |
1 |
https://leetcode-cn.com/problems/valid-parentheses |
| 516. 最长回文子序列 |
1 |
https://leetcode-cn.com/problems/longest-palindromic-subsequence |
| 151. 翻转字符串里的单词 |
1 |
https://leetcode-cn.com/problems/reverse-words-in-a-string |
| 416. 分割等和子集 |
1 |
https://leetcode-cn.com/problems/partition-equal-subset-sum |
| 572. 另一个树的子树 |
1 |
https://leetcode-cn.com/problems/subtree-of-another-tree |
| 450. 删除二叉搜索树中的节点 |
1 |
https://leetcode-cn.com/problems/delete-node-in-a-bst |
| 48. 旋转图像 |
1 |
https://leetcode-cn.com/problems/rotate-image |
| 剑指 Offer 25. 合并两个排序的链表 |
1 |
https://leetcode-cn.com/problems/he-bing-liang-ge-pai-xu-de-lian-biao-lcof |
| 4. 寻找两个正序数组的中位数 |
1 |
https://leetcode-cn.com/problems/median-of-two-sorted-arrays |
| 剑指 Offer 24. 反转链表 |
1 |
https://leetcode-cn.com/problems/fan-zhuan-lian-biao-lcof |
| 556. 下一个更大元素 III |
1 |
https://leetcode-cn.com/problems/next-greater-element-iii |
| 658. 找到 K 个最接近的元素 |
1 |
https://leetcode-cn.com/problems/find-k-closest-elements |
| 剑指 Offer 11. 旋转数组的最小数字 |
1 |
https://leetcode-cn.com/problems/xuan-zhuan-shu-zu-de-zui-xiao-shu-zi-lcof |
| 17. 电话号码的字母组合 |
1 |
https://leetcode-cn.com/problems/letter-combinations-of-a-phone-number |
| 168. Excel表列名称 |
1 |
https://leetcode-cn.com/problems/excel-sheet-column-title |
| 43. 字符串相乘 |
1 |
https://leetcode-cn.com/problems/multiply-strings |
| 31. 下一个排列 |
1 |
https://leetcode-cn.com/problems/next-permutation |
| 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 |
| 468. 验证IP地址 |
1 |
https://leetcode-cn.com/problems/validate-ip-address |
| 109. 有序链表转换二叉搜索树 |
1 |
https://leetcode-cn.com/problems/convert-sorted-list-to-binary-search-tree |
| 71. 简化路径 |
1 |
https://leetcode-cn.com/problems/simplify-path |
| 124. 二叉树中的最大路径和 |
1 |
https://leetcode-cn.com/problems/binary-tree-maximum-path-sum |
| 79. 单词搜索 |
1 |
https://leetcode-cn.com/problems/word-search |
| 剑指 Offer 32 - I. 从上到下打印二叉树 |
1 |
https://leetcode-cn.com/problems/cong-shang-dao-xia-da-yin-er-cha-shu-lcof |
| 60. 第k个排列 |
1 |
https://leetcode-cn.com/problems/permutation-sequence |
| 130. 被围绕的区域 |
1 |
https://leetcode-cn.com/problems/surrounded-regions |
| 40. 组合总和 II |
1 |
https://leetcode-cn.com/problems/combination-sum-ii |
| 59. 螺旋矩阵 II |
1 |
https://leetcode-cn.com/problems/spiral-matrix-ii |
| 225. 用队列实现栈 |
1 |
https://leetcode-cn.com/problems/implement-stack-using-queues |
| 47. 全排列 II |
1 |
https://leetcode-cn.com/problems/permutations-ii |
| 343. 整数拆分 |
1 |
https://leetcode-cn.com/problems/integer-break |
| 448. 找到所有数组中消失的数字 |
1 |
https://leetcode-cn.com/problems/find-all-numbers-disappeared-in-an-array |
| 152. 乘积最大子数组 |
1 |
https://leetcode-cn.com/problems/maximum-product-subarray |
| 259. 较小的三数之和 |
1 |
https://leetcode-cn.com/problems/3sum-smaller |
| 415. 字符串相加 |
1 |
https://leetcode-cn.com/problems/add-strings |
| 257. 二叉树的所有路径 |
1 |
https://leetcode-cn.com/problems/binary-tree-paths |
| 540. 有序数组中的单一元素 |
1 |
https://leetcode-cn.com/problems/single-element-in-a-sorted-array |
| 1325. 删除给定值的叶子节点 |
1 |
https://leetcode-cn.com/problems/delete-leaves-with-a-given-value |
| 160. 相交链表 |
1 |
https://leetcode-cn.com/problems/intersection-of-two-linked-lists |
| 42. 接雨水 |
1 |
https://leetcode-cn.com/problems/trapping-rain-water |
| 剑指 Offer 12. 矩阵中的路径 |
1 |
https://leetcode-cn.com/problems/ju-zhen-zhong-de-lu-jing-lcof |