| 206. 反转链表 |
27 |
https://leetcode-cn.com/problems/reverse-linked-list |
| 88. 合并两个有序数组 |
11 |
https://leetcode-cn.com/problems/merge-sorted-array |
| 补充题4. 手撕快速排序 |
11 |
https://leetcode-cn.com/problems/sort-an-array |
| 141. 环形链表 |
11 |
https://leetcode-cn.com/problems/linked-list-cycle |
| 718. 最长重复子数组 |
10 |
https://leetcode-cn.com/problems/maximum-length-of-repeated-subarray |
| 102. 二叉树的层序遍历 |
9 |
https://leetcode-cn.com/problems/binary-tree-level-order-traversal |
| 剑指 Offer 22. 链表中倒数第k个节点 |
9 |
https://leetcode-cn.com/problems/lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof |
| 8. 字符串转换整数 (atoi) |
8 |
https://leetcode-cn.com/problems/string-to-integer-atoi |
| 92. 反转链表 II |
8 |
https://leetcode-cn.com/problems/reverse-linked-list-ii |
| 232. 用栈实现队列 |
7 |
https://leetcode-cn.com/problems/implement-queue-using-stacks |
| 215. 数组中的第K个最大元素 |
7 |
https://leetcode-cn.com/problems/kth-largest-element-in-an-array |
| 124. 二叉树中的最大路径和 |
6 |
https://leetcode-cn.com/problems/binary-tree-maximum-path-sum |
| 144. 二叉树的前序遍历 |
6 |
https://leetcode-cn.com/problems/binary-tree-preorder-traversal |
| 146. LRU缓存机制 |
6 |
https://leetcode-cn.com/problems/lru-cache |
| 543. 二叉树的直径 |
6 |
https://leetcode-cn.com/problems/diameter-of-binary-tree |
| 142. 环形链表 II |
6 |
https://leetcode-cn.com/problems/linked-list-cycle-ii |
| 160. 相交链表 |
6 |
https://leetcode-cn.com/problems/intersection-of-two-linked-lists |
| 54. 螺旋矩阵 |
6 |
https://leetcode-cn.com/problems/spiral-matrix |
| 5. 最长回文子串 |
6 |
https://leetcode-cn.com/problems/longest-palindromic-substring |
| 19. 删除链表的倒数第N个节点 |
6 |
https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list |
| 21. 合并两个有序链表 |
6 |
https://leetcode-cn.com/problems/merge-two-sorted-lists |
| 25. K 个一组翻转链表 |
5 |
https://leetcode-cn.com/problems/reverse-nodes-in-k-group |
| 236. 二叉树的最近公共祖先 |
5 |
https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree |
| 15. 三数之和 |
5 |
https://leetcode-cn.com/problems/3sum |
| 94. 二叉树的中序遍历 |
5 |
https://leetcode-cn.com/problems/binary-tree-inorder-traversal |
| 82. 删除排序链表中的重复元素 II |
5 |
https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list-ii |
| 143. 重排链表 |
5 |
https://leetcode-cn.com/problems/reorder-list |
| 3. 无重复字符的最长子串 |
5 |
https://leetcode-cn.com/problems/longest-substring-without-repeating-characters |
| 56. 合并区间 |
5 |
https://leetcode-cn.com/problems/merge-intervals |
| 剑指 Offer 36. 二叉搜索树与双向链表 |
4 |
https://leetcode-cn.com/problems/er-cha-sou-suo-shu-yu-shuang-xiang-lian-biao-lcof |
| 415. 字符串相加 |
4 |
https://leetcode-cn.com/problems/add-strings |
| 704. 二分查找 |
4 |
https://leetcode-cn.com/problems/binary-search |
| 191. 位1的个数 |
4 |
https://leetcode-cn.com/problems/number-of-1-bits |
| 20. 有效的括号 |
4 |
https://leetcode-cn.com/problems/valid-parentheses |
| 113. 路径总和 II |
4 |
https://leetcode-cn.com/problems/path-sum-ii |
| 7. 整数反转 |
4 |
https://leetcode-cn.com/problems/reverse-integer |
| 2. 两数相加 |
4 |
https://leetcode-cn.com/problems/add-two-numbers |
| 53. 最大子序和 |
4 |
https://leetcode-cn.com/problems/maximum-subarray |
| 剑指 Offer 40. 最小的k个数 |
4 |
https://leetcode-cn.com/problems/zui-xiao-de-kge-shu-lcof |
| 103. 二叉树的锯齿形层次遍历 |
4 |
https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal |
| 151. 翻转字符串里的单词 |
4 |
https://leetcode-cn.com/problems/reverse-words-in-a-string |
| 1143. 最长公共子序列 |
3 |
https://leetcode-cn.com/problems/longest-common-subsequence |
| 110. 平衡二叉树 |
3 |
https://leetcode-cn.com/problems/balanced-binary-tree |
| 1. 两数之和 |
3 |
https://leetcode-cn.com/problems/two-sum |
| 199. 二叉树的右视图 |
3 |
https://leetcode-cn.com/problems/binary-tree-right-side-view |
| 234. 回文链表 |
3 |
https://leetcode-cn.com/problems/palindrome-linked-list |
| 93. 复原IP地址 |
3 |
https://leetcode-cn.com/problems/restore-ip-addresses |
| 498. 对角线遍历 |
3 |
https://leetcode-cn.com/problems/diagonal-traverse |
| 33. 搜索旋转排序数组 |
3 |
https://leetcode-cn.com/problems/search-in-rotated-sorted-array |
| 62. 不同路径 |
3 |
https://leetcode-cn.com/problems/unique-paths |
| 169. 多数元素 |
3 |
https://leetcode-cn.com/problems/majority-element |
| 剑指 Offer 62. 圆圈中最后剩下的数字 |
3 |
https://leetcode-cn.com/problems/yuan-quan-zhong-zui-hou-sheng-xia-de-shu-zi-lcof |
| 70. 爬楼梯 |
3 |
https://leetcode-cn.com/problems/climbing-stairs |
| 补充题5. 手撕归并排序 |
3 |
https://leetcode-cn.com/problems/sort-an-array |
| 468. 验证IP地址 |
3 |
https://leetcode-cn.com/problems/validate-ip-address |
| 补充题8. 计算数组的小和 |
3 |
https://mp.weixin.qq.com/s/0ih4W6nawzFUPSj3GOnYTQ |
| 83. 删除排序链表中的重复元素 |
3 |
https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list |
| 78. 子集 |
3 |
https://leetcode-cn.com/problems/subsets |
| 46. 全排列 |
3 |
https://leetcode-cn.com/problems/permutations |
| 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 |
| 384. 打乱数组 |
2 |
https://leetcode-cn.com/problems/shuffle-an-array |
| 226. 翻转二叉树 |
2 |
https://leetcode-cn.com/problems/invert-binary-tree |
| 69. x 的平方根 |
2 |
https://leetcode-cn.com/problems/sqrtx |
| 41. 缺失的第一个正数 |
2 |
https://leetcode-cn.com/problems/first-missing-positive |
| 300. 最长上升子序列 |
2 |
https://leetcode-cn.com/problems/longest-increasing-subsequence |
| 9. 回文数 |
2 |
https://leetcode-cn.com/problems/palindrome-number |
| 剑指 Offer 10- II. 青蛙跳台阶问题 |
2 |
https://leetcode-cn.com/problems/qing-wa-tiao-tai-jie-wen-ti-lcof |
| 64. 最小路径和 |
2 |
https://leetcode-cn.com/problems/minimum-path-sum |
| 687. 最长同值路径 |
2 |
https://leetcode-cn.com/problems/longest-univalue-path |
| 剑指 Offer 10- I. 斐波那契数列 |
2 |
https://leetcode-cn.com/problems/fei-bo-na-qi-shu-lie-lcof |
| 179. 最大数 |
2 |
https://leetcode-cn.com/problems/largest-number |
| 162. 寻找峰值 |
2 |
https://leetcode-cn.com/problems/find-peak-element |
| 剑指 Offer 21. 调整数组顺序使奇数位于偶数前面 |
2 |
https://leetcode-cn.com/problems/diao-zheng-shu-zu-shun-xu-shi-qi-shu-wei-yu-ou-shu-qian-mian-lcof |
| 121. 买卖股票的最佳时机 |
2 |
https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock |
| 125. 验证回文串 |
2 |
https://leetcode-cn.com/problems/valid-palindrome |
| 6. Z 字形变换 |
2 |
https://leetcode-cn.com/problems/zigzag-conversion |
| 101. 对称二叉树 |
2 |
https://leetcode-cn.com/problems/symmetric-tree |
| 242. 有效的字母异位词 |
2 |
https://leetcode-cn.com/problems/valid-anagram |
| 剑指 Offer 15. 二进制中1的个数 |
2 |
https://leetcode-cn.com/problems/er-jin-zhi-zhong-1de-ge-shu-lcof |
| 120. 三角形最小路径和 |
2 |
https://leetcode-cn.com/problems/triangle |
| 283. 移动零 |
2 |
https://leetcode-cn.com/problems/move-zeroes |
| 118. 杨辉三角 |
2 |
https://leetcode-cn.com/problems/pascals-triangle |
| 剑指 Offer 58 - I. 翻转单词顺序 |
1 |
https://leetcode-cn.com/problems/fan-zhuan-dan-ci-shun-xu-lcof |
| 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 |
| 387. 字符串中的第一个唯一字符 |
1 |
https://leetcode-cn.com/problems/first-unique-character-in-a-string |
| 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 |
| 55. 跳跃游戏 |
1 |
https://leetcode-cn.com/problems/jump-game |
| 1245. 树的直径 |
1 |
https://leetcode-cn.com/problems/tree-diameter |
| 1044. 最长重复子串 |
1 |
https://leetcode-cn.com/problems/longest-duplicate-substring |
| 679. 24 点游戏 |
1 |
https://leetcode-cn.com/problems/24-game |
| 60. 第k个排列 |
1 |
https://leetcode-cn.com/problems/permutation-sequence |
| 132. 分割回文串 II |
1 |
https://leetcode-cn.com/problems/palindrome-partitioning-ii |
| 43. 字符串相乘 |
1 |
https://leetcode-cn.com/problems/multiply-strings |
| 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 |
| 117. 填充每个节点的下一个右侧节点指针 II |
1 |
https://leetcode-cn.com/problems/populating-next-right-pointers-in-each-node-ii |
| 补充题6. 手撕堆排序 |
1 |
https://leetcode-cn.com/problems/sort-an-array |
| 509. 斐波那契数 |
1 |
https://leetcode-cn.com/problems/fibonacci-number |
| 268. 缺失数字 |
1 |
https://leetcode-cn.com/problems/missing-number |
| 26. 删除排序数组中的重复项 |
1 |
https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array |
| 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 |
| 958. 二叉树的完全性检验 |
1 |
https://leetcode-cn.com/problems/check-completeness-of-a-binary-tree |
| 42. 接雨水 |
1 |
https://leetcode-cn.com/problems/trapping-rain-water |
| 面试题 16.03. 交点 |
1 |
https://leetcode-cn.com/problems/intersection-lcci |
| 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 |
| 240. 搜索二维矩阵 II |
1 |
https://leetcode-cn.com/problems/search-a-2d-matrix-ii |
| 450. 删除二叉搜索树中的节点 |
1 |
https://leetcode-cn.com/problems/delete-node-in-a-bst |
| 剑指 Offer 14- I. 剪绳子 |
1 |
https://leetcode-cn.com/problems/jian-sheng-zi-lcof |
| 203. 移除链表元素 |
1 |
https://leetcode-cn.com/problems/remove-linked-list-elements |
| 227. 基本计算器 II |
1 |
https://leetcode-cn.com/problems/basic-calculator-ii |
| 31. 下一个排列 |
1 |
https://leetcode-cn.com/problems/next-permutation |
| 剑指 Offer 58 - II. 左旋转字符串 |
1 |
https://leetcode-cn.com/problems/zuo-xuan-zhuan-zi-fu-chuan-lcof |
| 617. 合并二叉树 |
1 |
https://leetcode-cn.com/problems/merge-two-binary-trees |
| 1095. 山脉数组中查找目标值 |
1 |
https://leetcode-cn.com/problems/find-in-mountain-array |
| 354. 俄罗斯套娃信封问题 |
1 |
https://leetcode-cn.com/problems/russian-doll-envelopes |
| 104. 二叉树的最大深度 |
1 |
https://leetcode-cn.com/problems/maximum-depth-of-binary-tree |
| 198. 打家劫舍 |
1 |
https://leetcode-cn.com/problems/house-robber |
| 155. 最小栈 |
1 |
https://leetcode-cn.com/problems/min-stack |
| 剑指 Offer 53 - I. 在排序数组中查找数字 I |
1 |
https://leetcode-cn.com/problems/zai-pai-xu-shu-zu-zhong-cha-zhao-shu-zi-lcof |
| 138. 复制带随机指针的链表 |
1 |
https://leetcode-cn.com/problems/copy-list-with-random-pointer |
| 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 |
| 137. 只出现一次的数字 II |
1 |
https://leetcode-cn.com/problems/single-number-ii |
| 518. 零钱兑换 II |
1 |
https://leetcode-cn.com/problems/coin-change-2 |
| 59. 螺旋矩阵 II |
1 |
https://leetcode-cn.com/problems/spiral-matrix-ii |
| 4. 寻找两个正序数组的中位数 |
1 |
https://leetcode-cn.com/problems/median-of-two-sorted-arrays |
| 补充题20. 立方根 |
1 |
|
| 剑指 Offer 65. 不用加减乘除做加法 |
1 |
https://leetcode-cn.com/problems/bu-yong-jia-jian-cheng-chu-zuo-jia-fa-lcof |
| 165. 比较版本号 |
1 |
https://leetcode-cn.com/problems/compare-version-numbers |
| 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 |
| 136. 只出现一次的数字 |
1 |
https://leetcode-cn.com/problems/single-number |
| 129. 求根到叶子节点数字之和 |
1 |
https://leetcode-cn.com/problems/sum-root-to-leaf-numbers |
| 剑指 Offer 43. 1～n整数中1出现的次数 |
1 |
https://leetcode-cn.com/problems/1nzheng-shu-zhong-1chu-xian-de-ci-shu-lcof |
| 面试题 02.08. 环路检测 |
1 |
https://leetcode-cn.com/problems/linked-list-cycle-lcci |
| 128. 最长连续序列 |
1 |
https://leetcode-cn.com/problems/longest-consecutive-sequence |
| 47. 全排列 II |
1 |
https://leetcode-cn.com/problems/permutations-ii |
| 61. 旋转链表 |
1 |
https://leetcode-cn.com/problems/rotate-list |
| 剑指 Offer 03. 数组中重复的数字 |
1 |
https://leetcode-cn.com/problems/shu-zu-zhong-zhong-fu-de-shu-zi-lcof |
| 剑指 Offer 29. 顺时针打印矩阵 |
1 |
https://leetcode-cn.com/problems/shun-shi-zhen-da-yin-ju-zhen-lcof |
| 面试题 02.01. 移除重复节点 |
1 |
https://leetcode-cn.com/problems/remove-duplicate-node-lcci |
| 面试题 02.02. 返回倒数第 k 个节点 |
1 |
https://leetcode-cn.com/problems/kth-node-from-end-of-list-lcci |
| 11. 盛最多水的容器 |
1 |
https://leetcode-cn.com/problems/container-with-most-water |
| 172. 阶乘后的零 |
1 |
https://leetcode-cn.com/problems/factorial-trailing-zeroes |
| 14. 最长公共前缀 |
1 |
https://leetcode-cn.com/problems/longest-common-prefix |
| 补充题21. 字符串相减 |
1 |
https://mp.weixin.qq.com/s/kCue4c0gnLSw0HosFl_t7w |
| 516. 最长回文子序列 |
1 |
https://leetcode-cn.com/problems/longest-palindromic-subsequence |
| 692. 前K个高频单词 |
1 |
https://leetcode-cn.com/problems/top-k-frequent-words |
| 91. 解码方法 |
1 |
https://leetcode-cn.com/problems/decode-ways |
| 面试题 02.05. 链表求和 |
1 |
https://leetcode-cn.com/problems/sum-lists-lcci |
| 面试题 03.05. 栈排序 |
1 |
https://leetcode-cn.com/problems/sort-of-stacks-lcci |
| 23. 合并K个排序链表 |
1 |
https://leetcode-cn.com/problems/merge-k-sorted-lists |
| 876. 链表的中间结点 |
1 |
https://leetcode-cn.com/problems/middle-of-the-linked-list |
| 145. 二叉树的后序遍历 |
1 |
https://leetcode-cn.com/problems/binary-tree-postorder-traversal |
| 622. 设计循环队列 |
1 |
https://leetcode-cn.com/problems/design-circular-queue |
| 343. 整数拆分 |
1 |
https://leetcode-cn.com/problems/integer-break |
| 112. 路径总和 |
1 |
https://leetcode-cn.com/problems/path-sum |