| 146. LRU缓存机制 |
32 |
https://leetcode-cn.com/problems/lru-cache |
| 206. 反转链表 |
30 |
https://leetcode-cn.com/problems/reverse-linked-list |
| 补充题4. 手撕快速排序 |
24 |
https://leetcode-cn.com/problems/sort-an-array |
| 21. 合并两个有序链表 |
18 |
https://leetcode-cn.com/problems/merge-two-sorted-lists |
| 470. 用 Rand7() 实现 Rand10() |
15 |
https://leetcode-cn.com/problems/implement-rand10-using-rand7 |
| 234. 回文链表 |
14 |
https://leetcode-cn.com/problems/palindrome-linked-list |
| 8. 字符串转换整数 (atoi) |
13 |
https://leetcode-cn.com/problems/string-to-integer-atoi |
| 53. 最大子序和 |
12 |
https://leetcode-cn.com/problems/maximum-subarray |
| 460. LFU缓存 |
12 |
https://leetcode-cn.com/problems/lfu-cache |
| 215. 数组中的第K个最大元素 |
10 |
https://leetcode-cn.com/problems/kth-largest-element-in-an-array |
| 153. 寻找旋转排序数组中的最小值 |
10 |
https://leetcode-cn.com/problems/find-minimum-in-rotated-sorted-array |
| 3. 无重复字符的最长子串 |
10 |
https://leetcode-cn.com/problems/longest-substring-without-repeating-characters |
| 704. 二分查找 |
10 |
https://leetcode-cn.com/problems/binary-search |
| 415. 字符串相加 |
10 |
https://leetcode-cn.com/problems/add-strings |
| 补充题6. 手撕堆排序 |
9 |
https://leetcode-cn.com/problems/sort-an-array |
| 剑指 Offer 54. 二叉搜索树的第k大节点 |
9 |
https://leetcode-cn.com/problems/er-cha-sou-suo-shu-de-di-kda-jie-dian-lcof |
| 160. 相交链表 |
8 |
https://leetcode-cn.com/problems/intersection-of-two-linked-lists |
| 141. 环形链表 |
8 |
https://leetcode-cn.com/problems/linked-list-cycle |
| 151. 翻转字符串里的单词 |
8 |
https://leetcode-cn.com/problems/reverse-words-in-a-string |
| 4. 寻找两个正序数组的中位数 |
7 |
https://leetcode-cn.com/problems/median-of-two-sorted-arrays |
| 42. 接雨水 |
7 |
https://leetcode-cn.com/problems/trapping-rain-water |
| 102. 二叉树的层序遍历 |
7 |
https://leetcode-cn.com/problems/binary-tree-level-order-traversal |
| 144. 二叉树的前序遍历 |
7 |
https://leetcode-cn.com/problems/binary-tree-preorder-traversal |
| 300. 最长上升子序列 |
6 |
https://leetcode-cn.com/problems/longest-increasing-subsequence |
| 110. 平衡二叉树 |
6 |
https://leetcode-cn.com/problems/balanced-binary-tree |
| 2. 两数相加 |
6 |
https://leetcode-cn.com/problems/add-two-numbers |
| 70. 爬楼梯 |
6 |
https://leetcode-cn.com/problems/climbing-stairs |
| 213. 打家劫舍 II |
6 |
https://leetcode-cn.com/problems/house-robber-ii |
| 5. 最长回文子串 |
6 |
https://leetcode-cn.com/problems/longest-palindromic-substring |
| 494. 目标和 |
6 |
https://leetcode-cn.com/problems/target-sum |
| 15. 三数之和 |
6 |
https://leetcode-cn.com/problems/3sum |
| 1. 两数之和 |
5 |
https://leetcode-cn.com/problems/two-sum |
| 239. 滑动窗口最大值 |
5 |
https://leetcode-cn.com/problems/sliding-window-maximum |
| 136. 只出现一次的数字 |
5 |
https://leetcode-cn.com/problems/single-number |
| 25. K 个一组翻转链表 |
5 |
https://leetcode-cn.com/problems/reverse-nodes-in-k-group |
| 232. 用栈实现队列 |
5 |
https://leetcode-cn.com/problems/implement-queue-using-stacks |
| 155. 最小栈 |
5 |
https://leetcode-cn.com/problems/min-stack |
| 104. 二叉树的最大深度 |
5 |
https://leetcode-cn.com/problems/maximum-depth-of-binary-tree |
| 剑指 Offer 22. 链表中倒数第k个节点 |
5 |
https://leetcode-cn.com/problems/lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof |
| 322. 零钱兑换 |
5 |
https://leetcode-cn.com/problems/coin-change |
| 525. 连续数组 |
5 |
https://leetcode-cn.com/problems/contiguous-array |
| 169. 多数元素 |
4 |
https://leetcode-cn.com/problems/majority-element |
| 236. 二叉树的最近公共祖先 |
4 |
https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree |
| 328. 奇偶链表 |
4 |
https://leetcode-cn.com/problems/odd-even-linked-list |
| 9. 回文数 |
4 |
https://leetcode-cn.com/problems/palindrome-number |
| 112. 路径总和 |
4 |
https://leetcode-cn.com/problems/path-sum |
| 142. 环形链表 II |
4 |
https://leetcode-cn.com/problems/linked-list-cycle-ii |
| 54. 螺旋矩阵 |
4 |
https://leetcode-cn.com/problems/spiral-matrix |
| 240. 搜索二维矩阵 II |
4 |
https://leetcode-cn.com/problems/search-a-2d-matrix-ii |
| 20. 有效的括号 |
4 |
https://leetcode-cn.com/problems/valid-parentheses |
| 706. 设计哈希映射 |
4 |
https://leetcode-cn.com/problems/design-hashmap |
| 678. 有效的括号字符串 |
4 |
https://leetcode-cn.com/problems/valid-parenthesis-string |
| 补充题5. 手撕归并排序 |
4 |
https://leetcode-cn.com/problems/sort-an-array |
| 31. 下一个排列 |
4 |
https://leetcode-cn.com/problems/next-permutation |
| 33. 搜索旋转排序数组 |
4 |
https://leetcode-cn.com/problems/search-in-rotated-sorted-array |
| 199. 二叉树的右视图 |
4 |
https://leetcode-cn.com/problems/binary-tree-right-side-view |
| 887. 鸡蛋掉落 |
4 |
https://leetcode-cn.com/problems/super-egg-drop |
| 46. 全排列 |
4 |
https://leetcode-cn.com/problems/permutations |
| 88. 合并两个有序数组 |
4 |
https://leetcode-cn.com/problems/merge-sorted-array |
| 23. 合并K个排序链表 |
3 |
https://leetcode-cn.com/problems/merge-k-sorted-lists |
| 189. 旋转数组 |
3 |
https://leetcode-cn.com/problems/rotate-array |
| 59. 螺旋矩阵 II |
3 |
https://leetcode-cn.com/problems/spiral-matrix-ii |
| 43. 字符串相乘 |
3 |
https://leetcode-cn.com/problems/multiply-strings |
| 384. 打乱数组 |
3 |
https://leetcode-cn.com/problems/shuffle-an-array |
| 172. 阶乘后的零 |
3 |
https://leetcode-cn.com/problems/factorial-trailing-zeroes |
| 227. 基本计算器 II |
3 |
https://leetcode-cn.com/problems/basic-calculator-ii |
| 718. 最长重复子数组 |
3 |
https://leetcode-cn.com/problems/maximum-length-of-repeated-subarray |
| 394. 字符串解码 |
3 |
https://leetcode-cn.com/problems/decode-string |
| 69. x 的平方根 |
3 |
https://leetcode-cn.com/problems/sqrtx |
| 148. 排序链表 |
3 |
https://leetcode-cn.com/problems/sort-list |
| 143. 重排链表 |
3 |
https://leetcode-cn.com/problems/reorder-list |
| 121. 买卖股票的最佳时机 |
2 |
https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock |
| 37. 解数独 |
2 |
https://leetcode-cn.com/problems/sudoku-solver |
| 剑指 Offer 42. 连续子数组的最大和 |
2 |
https://leetcode-cn.com/problems/lian-xu-zi-shu-zu-de-zui-da-he-lcof |
| 287. 寻找重复数 |
2 |
https://leetcode-cn.com/problems/find-the-duplicate-number |
| 129. 求根到叶子节点数字之和 |
2 |
https://leetcode-cn.com/problems/sum-root-to-leaf-numbers |
| 78. 子集 |
2 |
https://leetcode-cn.com/problems/subsets |
| 剑指 Offer 03. 数组中重复的数字 |
2 |
https://leetcode-cn.com/problems/shu-zu-zhong-zhong-fu-de-shu-zi-lcof |
| 93. 复原IP地址 |
2 |
https://leetcode-cn.com/problems/restore-ip-addresses |
| 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 |
| 138. 复制带随机指针的链表 |
2 |
https://leetcode-cn.com/problems/copy-list-with-random-pointer |
| 113. 路径总和 II |
2 |
https://leetcode-cn.com/problems/path-sum-ii |
| 剑指 Offer 65. 不用加减乘除做加法 |
2 |
https://leetcode-cn.com/problems/bu-yong-jia-jian-cheng-chu-zuo-jia-fa-lcof |
| 459. 重复的子字符串 |
2 |
https://leetcode-cn.com/problems/repeated-substring-pattern |
| 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 |
| 11. 盛最多水的容器 |
2 |
https://leetcode-cn.com/problems/container-with-most-water |
| 26. 删除排序数组中的重复项 |
2 |
https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array |
| 103. 二叉树的锯齿形层次遍历 |
2 |
https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal |
| 补充题21. 字符串相减 |
2 |
https://mp.weixin.qq.com/s/kCue4c0gnLSw0HosFl_t7w |
| 907. 子数组的最小值之和 |
2 |
https://leetcode-cn.com/problems/sum-of-subarray-minimums |
| 补充题22. IP地址与整数的转换 |
2 |
https://mp.weixin.qq.com/s/u-RahFTB3JIqND41HqtotQ |
| 692. 前K个高频单词 |
2 |
https://leetcode-cn.com/problems/top-k-frequent-words |
| 200. 岛屿数量 |
2 |
https://leetcode-cn.com/problems/number-of-islands |
| 14. 最长公共前缀 |
2 |
https://leetcode-cn.com/problems/longest-common-prefix |
| 118. 杨辉三角 |
2 |
https://leetcode-cn.com/problems/pascals-triangle |
| 剑指 Offer 57 - II. 和为s的连续正数序列 |
2 |
https://leetcode-cn.com/problems/he-wei-sde-lian-xu-zheng-shu-xu-lie-lcof |
| 剑指 Offer 40. 最小的k个数 |
2 |
https://leetcode-cn.com/problems/zui-xiao-de-kge-shu-lcof |
| 378. 有序矩阵中第K小的元素 |
2 |
https://leetcode-cn.com/problems/kth-smallest-element-in-a-sorted-matrix |
| 48. 旋转图像 |
2 |
https://leetcode-cn.com/problems/rotate-image |
| 480. 滑动窗口中位数 |
2 |
https://leetcode-cn.com/problems/sliding-window-median |
| 1095. 山脉数组中查找目标值 |
2 |
https://leetcode-cn.com/problems/find-in-mountain-array |
| 405. 数字转换为十六进制数 |
2 |
https://leetcode-cn.com/problems/convert-a-number-to-hexadecimal |
| 92. 反转链表 II |
2 |
https://leetcode-cn.com/problems/reverse-linked-list-ii |
| 876. 链表的中间结点 |
2 |
https://leetcode-cn.com/problems/middle-of-the-linked-list |
| 剑指 Offer 24. 反转链表 |
1 |
https://leetcode-cn.com/problems/fan-zhuan-lian-biao-lcof |
| 409. 最长回文串 |
1 |
https://leetcode-cn.com/problems/longest-palindrome |
| 224. 基本计算器 |
1 |
https://leetcode-cn.com/problems/basic-calculator |
| 94. 二叉树的中序遍历 |
1 |
https://leetcode-cn.com/problems/binary-tree-inorder-traversal |
| 530. 二叉搜索树的最小绝对差 |
1 |
https://leetcode-cn.com/problems/minimum-absolute-difference-in-bst |
| 315. 计算右侧小于当前元素的个数 |
1 |
https://leetcode-cn.com/problems/count-of-smaller-numbers-after-self |
| 260. 只出现一次的数字 III |
1 |
https://leetcode-cn.com/problems/single-number-iii |
| 679. 24 点游戏 |
1 |
https://leetcode-cn.com/problems/24-game |
| 994. 腐烂的橘子 |
1 |
https://leetcode-cn.com/problems/rotting-oranges |
| 588. 设计内存文件系统 |
1 |
https://leetcode-cn.com/problems/design-in-memory-file-system |
| 125. 验证回文串 |
1 |
https://leetcode-cn.com/problems/valid-palindrome |
| 41. 缺失的第一个正数 |
1 |
https://leetcode-cn.com/problems/first-missing-positive |
| 337. 打家劫舍 III |
1 |
https://leetcode-cn.com/problems/house-robber-iii |
| 226. 翻转二叉树 |
1 |
https://leetcode-cn.com/problems/invert-binary-tree |
| 剑指 Offer 51. 数组中的逆序对 |
1 |
https://leetcode-cn.com/problems/shu-zu-zhong-de-ni-xu-dui-lcof |
| 补充题17. 两个有序数组第k小的数 |
1 |
|
| 217. 存在重复元素 |
1 |
https://leetcode-cn.com/problems/contains-duplicate |
| 242. 有效的字母异位词 |
1 |
https://leetcode-cn.com/problems/valid-anagram |
| 63. 不同路径 II |
1 |
https://leetcode-cn.com/problems/unique-paths-ii |
| 74. 搜索二维矩阵 |
1 |
https://leetcode-cn.com/problems/search-a-2d-matrix |
| 701. 二叉搜索树中的插入操作 |
1 |
https://leetcode-cn.com/problems/insert-into-a-binary-search-tree |
| 1047. 删除字符串中的所有相邻重复项 |
1 |
https://leetcode-cn.com/problems/remove-all-adjacent-duplicates-in-string |
| 75. 颜色分类 |
1 |
https://leetcode-cn.com/problems/sort-colors |
| 补充题14. 阿拉伯数字转中文数字 |
1 |
|
| 134. 加油站 |
1 |
https://leetcode-cn.com/problems/gas-station |
| 231. 2的幂 |
1 |
https://leetcode-cn.com/problems/power-of-two |
| 451. 根据字符出现频率排序 |
1 |
https://leetcode-cn.com/problems/sort-characters-by-frequency |
| 24. 两两交换链表中的节点 |
1 |
https://leetcode-cn.com/problems/swap-nodes-in-pairs |
| 剑指 Offer 10- I. 斐波那契数列 |
1 |
https://leetcode-cn.com/problems/fei-bo-na-qi-shu-lie-lcof |
| 7. 整数反转 |
1 |
https://leetcode-cn.com/problems/reverse-integer |
| 316. 去除重复字母 |
1 |
https://leetcode-cn.com/problems/remove-duplicate-letters |
| 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 |
| 61. 旋转链表 |
1 |
https://leetcode-cn.com/problems/rotate-list |
| 283. 移动零 |
1 |
https://leetcode-cn.com/problems/move-zeroes |
| 剑指 Offer 36. 二叉搜索树与双向链表 |
1 |
https://leetcode-cn.com/problems/er-cha-sou-suo-shu-yu-shuang-xiang-lian-biao-lcof |
| 128. 最长连续序列 |
1 |
https://leetcode-cn.com/problems/longest-consecutive-sequence |
| 1044. 最长重复子串 |
1 |
https://leetcode-cn.com/problems/longest-duplicate-substring |
| 76. 最小覆盖子串 |
1 |
https://leetcode-cn.com/problems/minimum-window-substring |
| 50. Pow(x, n) |
1 |
https://leetcode-cn.com/problems/powx-n |
| 162. 寻找峰值 |
1 |
https://leetcode-cn.com/problems/find-peak-element |
| 208. 实现 Trie (前缀树) |
1 |
https://leetcode-cn.com/problems/implement-trie-prefix-tree |
| 179. 最大数 |
1 |
https://leetcode-cn.com/problems/largest-number |
| 728. 自除数 |
1 |
https://leetcode-cn.com/problems/self-dividing-numbers |
| 391. 完美矩形 |
1 |
https://leetcode-cn.com/problems/perfect-rectangle |
| 523. 连续的子数组和 |
1 |
https://leetcode-cn.com/problems/continuous-subarray-sum |
| 137. 只出现一次的数字 II |
1 |
https://leetcode-cn.com/problems/single-number-ii |
| 598. 范围求和 II |
1 |
https://leetcode-cn.com/problems/range-addition-ii |
| 258. 各位相加 |
1 |
https://leetcode-cn.com/problems/add-digits |
| 443. 压缩字符串 |
1 |
https://leetcode-cn.com/problems/string-compression |
| 72. 编辑距离 |
1 |
https://leetcode-cn.com/problems/edit-distance |
| 292. Nim 游戏 |
1 |
https://leetcode-cn.com/problems/nim-game |
| 297. 二叉树的序列化与反序列化 |
1 |
https://leetcode-cn.com/problems/serialize-and-deserialize-binary-tree |
| 518. 零钱兑换 II |
1 |
https://leetcode-cn.com/problems/coin-change-2 |
| 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 |
| 剑指 Offer 32 - III. 从上到下打印二叉树 III |
1 |
https://leetcode-cn.com/problems/cong-shang-dao-xia-da-yin-er-cha-shu-iii-lcof |
| 622. 设计循环队列 |
1 |
https://leetcode-cn.com/problems/design-circular-queue |
| 1299. 将每个元素替换为右侧最大元素 |
1 |
https://leetcode-cn.com/problems/replace-elements-with-greatest-element-on-right-side |
| 67. 二进制求和 |
1 |
https://leetcode-cn.com/problems/add-binary |
| 64. 最小路径和 |
1 |
https://leetcode-cn.com/problems/minimum-path-sum |
| 剑指 Offer 52. 两个链表的第一个公共节点 |
1 |
https://leetcode-cn.com/problems/liang-ge-lian-biao-de-di-yi-ge-gong-gong-jie-dian-lcof |
| 560. 和为K的子数组 |
1 |
https://leetcode-cn.com/problems/subarray-sum-equals-k |
| 28. 实现 strStr() |
1 |
https://leetcode-cn.com/problems/implement-strstr |
| 84. 柱状图中最大的矩形 |
1 |
https://leetcode-cn.com/problems/largest-rectangle-in-histogram |
| 295. 数据流的中位数 |
1 |
https://leetcode-cn.com/problems/find-median-from-data-stream |
| 225. 用队列实现栈 |
1 |
https://leetcode-cn.com/problems/implement-stack-using-queues |
| 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 |
| 442. 数组中重复的数据 |
1 |
https://leetcode-cn.com/problems/find-all-duplicates-in-an-array |
| 381. O(1) 时间插入、删除和获取随机元素 - 允许重复 |
1 |
https://leetcode-cn.com/problems/insert-delete-getrandom-o1-duplicates-allowed |
| 695. 岛屿的最大面积 |
1 |
https://leetcode-cn.com/problems/max-area-of-island |
| 111. 二叉树的最小深度 |
1 |
https://leetcode-cn.com/problems/minimum-depth-of-binary-tree |
| 567. 字符串的排列 |
1 |
https://leetcode-cn.com/problems/permutation-in-string |
| 107. 二叉树的层次遍历 II |
1 |
https://leetcode-cn.com/problems/binary-tree-level-order-traversal-ii |
| 1219. 黄金矿工 |
1 |
https://leetcode-cn.com/problems/path-with-maximum-gold |
| 剑指 Offer 16. 数值的整数次方 |
1 |
https://leetcode-cn.com/problems/shu-zhi-de-zheng-shu-ci-fang-lcof |