客户端 题目 出现次数 链接 236. 二叉树的最近公共祖先 4 https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree 92. 反转链表 II 3 https://leetcode-cn.com/problems/reverse-linked-list-ii 215. 数组中的第K个最大元素 2 https://leetcode-cn.com/problems/kth-largest-element-in-an-array 141. 环形链表 2 https://leetcode-cn.com/problems/linked-list-cycle 25. K 个一组翻转链表 2 https://leetcode-cn.com/problems/reverse-nodes-in-k-group 148. 排序链表 2 https://leetcode-cn.com/problems/sort-list 86. 分隔链表 2 https://leetcode-cn.com/problems/partition-list 128. 最长连续序列 2 https://leetcode-cn.com/problems/longest-consecutive-sequence 78. 子集 1 https://leetcode-cn.com/problems/subsets 剑指 Offer 54. 二叉搜索树的第k大节点 1 https://leetcode-cn.com/problems/er-cha-sou-suo-shu-de-di-kda-jie-dian-lcof 206. 反转链表 1 https://leetcode-cn.com/problems/reverse-linked-list 剑指 Offer 18. 删除链表的节点 1 https://leetcode-cn.com/problems/shan-chu-lian-biao-de-jie-dian-lcof 24. 两两交换链表中的节点 1 https://leetcode-cn.com/problems/swap-nodes-in-pairs 57. 插入区间 1 https://leetcode-cn.com/problems/insert-interval 200. 岛屿数量 1 https://leetcode-cn.com/problems/number-of-islands 42. 接雨水 1 https://leetcode-cn.com/problems/trapping-rain-water 695. 岛屿的最大面积 1 https://leetcode-cn.com/problems/max-area-of-island 915. 分割数组 1 https://leetcode-cn.com/problems/partition-array-into-disjoint-intervals 143. 重排链表 1 https://leetcode-cn.com/problems/reorder-list 540. 有序数组中的单一元素 1 https://leetcode-cn.com/problems/single-element-in-a-sorted-array 865. 具有所有最深结点的最小子树 1 https://leetcode-cn.com/problems/smallest-subtree-with-all-the-deepest-nodes 220. 存在重复元素 III 1 https://leetcode-cn.com/problems/contains-duplicate-iii 80. 删除排序数组中的重复项 II 1 https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array-ii 701. 二叉搜索树中的插入操作 1 https://leetcode-cn.com/problems/insert-into-a-binary-search-tree 83. 删除排序链表中的重复元素 1 https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list 319. 灯泡开关 1 https://leetcode-cn.com/problems/bulb-switcher 240. 搜索二维矩阵 II 1 https://leetcode-cn.com/problems/search-a-2d-matrix-ii 50. Pow(x, n) 1 https://leetcode-cn.com/problems/powx-n 56. 合并区间 1 https://leetcode-cn.com/problems/merge-intervals 73. 矩阵置零 1 https://leetcode-cn.com/problems/set-matrix-zeroes 530. 二叉搜索树的最小绝对差 1 https://leetcode-cn.com/problems/minimum-absolute-difference-in-bst 54. 螺旋矩阵 1 https://leetcode-cn.com/problems/spiral-matrix 72. 编辑距离 1 https://leetcode-cn.com/problems/edit-distance 1325. 删除给定值的叶子节点 1 https://leetcode-cn.com/problems/delete-leaves-with-a-given-value