| 25. K 个一组翻转链表 |
60 |
https://leetcode-cn.com/problems/reverse-nodes-in-k-group |
| 3. 无重复字符的最长子串 |
57 |
https://leetcode-cn.com/problems/longest-substring-without-repeating-characters |
| 146. LRU缓存机制 |
53 |
https://leetcode-cn.com/problems/lru-cache |
| 215. 数组中的第K个最大元素 |
52 |
https://leetcode-cn.com/problems/kth-largest-element-in-an-array |
| 206. 反转链表 |
51 |
https://leetcode-cn.com/problems/reverse-linked-list |
| 103. 二叉树的锯齿形层次遍历 |
47 |
https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal |
| 15. 三数之和 |
42 |
https://leetcode-cn.com/problems/3sum |
| 121. 买卖股票的最佳时机 |
41 |
https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock |
| 160. 相交链表 |
32 |
https://leetcode-cn.com/problems/intersection-of-two-linked-lists |
| 236. 二叉树的最近公共祖先 |
32 |
https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree |
| 42. 接雨水 |
31 |
https://leetcode-cn.com/problems/trapping-rain-water |
| 33. 搜索旋转排序数组 |
27 |
https://leetcode-cn.com/problems/search-in-rotated-sorted-array |
| 31. 下一个排列 |
27 |
https://leetcode-cn.com/problems/next-permutation |
| 199. 二叉树的右视图 |
24 |
https://leetcode-cn.com/problems/binary-tree-right-side-view |
| 54. 螺旋矩阵 |
24 |
https://leetcode-cn.com/problems/spiral-matrix |
| 143. 重排链表 |
24 |
https://leetcode-cn.com/problems/reorder-list |
| 23. 合并K个排序链表 |
23 |
https://leetcode-cn.com/problems/merge-k-sorted-lists |
| 21. 合并两个有序链表 |
22 |
https://leetcode-cn.com/problems/merge-two-sorted-lists |
| 300. 最长上升子序列 |
21 |
https://leetcode-cn.com/problems/longest-increasing-subsequence |
| 69. x 的平方根 |
20 |
https://leetcode-cn.com/problems/sqrtx |
| 92. 反转链表 II |
20 |
https://leetcode-cn.com/problems/reverse-linked-list-ii |
| 105. 从前序与中序遍历序列构造二叉树 |
19 |
https://leetcode-cn.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal |
| 1. 两数之和 |
19 |
https://leetcode-cn.com/problems/two-sum |
| 124. 二叉树中的最大路径和 |
18 |
https://leetcode-cn.com/problems/binary-tree-maximum-path-sum |
| 200. 岛屿数量 |
18 |
https://leetcode-cn.com/problems/number-of-islands |
| 41. 缺失的第一个正数 |
17 |
https://leetcode-cn.com/problems/first-missing-positive |
| 101. 对称二叉树 |
16 |
https://leetcode-cn.com/problems/symmetric-tree |
| 56. 合并区间 |
16 |
https://leetcode-cn.com/problems/merge-intervals |
| 415. 字符串相加 |
16 |
https://leetcode-cn.com/problems/add-strings |
| 155. 最小栈 |
16 |
https://leetcode-cn.com/problems/min-stack |
| 46. 全排列 |
16 |
https://leetcode-cn.com/problems/permutations |
| 76. 最小覆盖子串 |
16 |
https://leetcode-cn.com/problems/minimum-window-substring |
| 补充题1. 排序奇升偶降链表 |
16 |
https://mp.weixin.qq.com/s/0WVa2wIAeG0nYnVndZiEXQ |
| 141. 环形链表 |
14 |
https://leetcode-cn.com/problems/linked-list-cycle |
| 221. 最大正方形 |
14 |
https://leetcode-cn.com/problems/maximal-square |
| 20. 有效的括号 |
14 |
https://leetcode-cn.com/problems/valid-parentheses |
| 98. 验证二叉搜索树 |
14 |
https://leetcode-cn.com/problems/validate-binary-search-tree |
| 39. 组合总和 |
14 |
https://leetcode-cn.com/problems/combination-sum |
| 102. 二叉树的层序遍历 |
13 |
https://leetcode-cn.com/problems/binary-tree-level-order-traversal |
| 53. 最大子序和 |
13 |
https://leetcode-cn.com/problems/maximum-subarray |
| 322. 零钱兑换 |
13 |
https://leetcode-cn.com/problems/coin-change |
| 162. 寻找峰值 |
13 |
https://leetcode-cn.com/problems/find-peak-element |
| 122. 买卖股票的最佳时机 II |
13 |
https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-ii |
| 142. 环形链表 II |
13 |
https://leetcode-cn.com/problems/linked-list-cycle-ii |
| 48. 旋转图像 |
13 |
https://leetcode-cn.com/problems/rotate-image |
| 470. 用 Rand7() 实现 Rand10() |
13 |
https://leetcode-cn.com/problems/implement-rand10-using-rand7 |
| 补充题2. 圆环回原点问题 |
13 |
https://mp.weixin.qq.com/s/NZPaFsFrTybO3K3s7p7EVg |
| 234. 回文链表 |
12 |
https://leetcode-cn.com/problems/palindrome-linked-list |
| 518. 零钱兑换 II |
12 |
https://leetcode-cn.com/problems/coin-change-2 |
| 88. 合并两个有序数组 |
12 |
https://leetcode-cn.com/problems/merge-sorted-array |
| 2. 两数相加 |
12 |
https://leetcode-cn.com/problems/add-two-numbers |
| 32. 最长有效括号 |
12 |
https://leetcode-cn.com/problems/longest-valid-parentheses |
| 958. 二叉树的完全性检验 |
12 |
https://leetcode-cn.com/problems/check-completeness-of-a-binary-tree |
| 148. 排序链表 |
12 |
https://leetcode-cn.com/problems/sort-list |
| 198. 打家劫舍 |
12 |
https://leetcode-cn.com/problems/house-robber |
| 232. 用栈实现队列 |
12 |
https://leetcode-cn.com/problems/implement-queue-using-stacks |
| 补充题4. 手撕快速排序 |
12 |
https://leetcode-cn.com/problems/sort-an-array |
| 113. 路径总和 II |
11 |
https://leetcode-cn.com/problems/path-sum-ii |
| 5. 最长回文子串 |
11 |
https://leetcode-cn.com/problems/longest-palindromic-substring |
| 543. 二叉树的直径 |
10 |
https://leetcode-cn.com/problems/diameter-of-binary-tree |
| 79. 单词搜索 |
10 |
https://leetcode-cn.com/problems/word-search |
| 82. 删除排序链表中的重复元素 II |
10 |
https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list-ii |
| 83. 删除排序链表中的重复元素 |
9 |
https://leetcode-cn.com/problems/remove-duplicates-from-sorted-list |
| 128. 最长连续序列 |
9 |
https://leetcode-cn.com/problems/longest-consecutive-sequence |
| 22. 括号生成 |
9 |
https://leetcode-cn.com/problems/generate-parentheses |
| 94. 二叉树的中序遍历 |
9 |
https://leetcode-cn.com/problems/binary-tree-inorder-traversal |
| 739. 每日温度 |
9 |
https://leetcode-cn.com/problems/daily-temperatures |
| 78. 子集 |
9 |
https://leetcode-cn.com/problems/subsets |
| 补充题9. 36进制加法 |
9 |
https://mp.weixin.qq.com/s/XcKQwnwCh5nZsz-DLHJwzQ |
| 剑指 Offer 54. 二叉搜索树的第k大节点 |
8 |
https://leetcode-cn.com/problems/er-cha-sou-suo-shu-de-di-kda-jie-dian-lcof |
| 8. 字符串转换整数 (atoi) |
8 |
https://leetcode-cn.com/problems/string-to-integer-atoi |
| 24. 两两交换链表中的节点 |
8 |
https://leetcode-cn.com/problems/swap-nodes-in-pairs |
| 114. 二叉树展开为链表 |
8 |
https://leetcode-cn.com/problems/flatten-binary-tree-to-linked-list |
| 剑指 Offer 22. 链表中倒数第k个节点 |
8 |
https://leetcode-cn.com/problems/lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof |
| 93. 复原IP地址 |
8 |
https://leetcode-cn.com/problems/restore-ip-addresses |
| 440. 字典序的第K小数字 |
8 |
https://leetcode-cn.com/problems/k-th-smallest-in-lexicographical-order |
| 70. 爬楼梯 |
7 |
https://leetcode-cn.com/problems/climbing-stairs |
| 112. 路径总和 |
7 |
https://leetcode-cn.com/problems/path-sum |
| 695. 岛屿的最大面积 |
7 |
https://leetcode-cn.com/problems/max-area-of-island |
| 138. 复制带随机指针的链表 |
7 |
https://leetcode-cn.com/problems/copy-list-with-random-pointer |
| 19. 删除链表的倒数第N个节点 |
7 |
https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list |
| 129. 求根到叶子节点数字之和 |
7 |
https://leetcode-cn.com/problems/sum-root-to-leaf-numbers |
| 662. 二叉树最大宽度 |
7 |
https://leetcode-cn.com/problems/maximum-width-of-binary-tree |
| 240. 搜索二维矩阵 II |
7 |
https://leetcode-cn.com/problems/search-a-2d-matrix-ii |
| 556. 下一个更大元素 III |
7 |
https://leetcode-cn.com/problems/next-greater-element-iii |
| 230. 二叉搜索树中第K小的元素 |
6 |
https://leetcode-cn.com/problems/kth-smallest-element-in-a-bst |
| 110. 平衡二叉树 |
6 |
https://leetcode-cn.com/problems/balanced-binary-tree |
| 328. 奇偶链表 |
6 |
https://leetcode-cn.com/problems/odd-even-linked-list |
| 460. LFU缓存 |
6 |
https://leetcode-cn.com/problems/lfu-cache |
| 64. 最小路径和 |
6 |
https://leetcode-cn.com/problems/minimum-path-sum |
| 61. 旋转链表 |
6 |
https://leetcode-cn.com/problems/rotate-list |
| 188. 买卖股票的最佳时机 IV |
6 |
https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-iv |
| 224. 基本计算器 |
6 |
https://leetcode-cn.com/problems/basic-calculator |
| 剑指 Offer 36. 二叉搜索树与双向链表 |
6 |
https://leetcode-cn.com/problems/er-cha-sou-suo-shu-yu-shuang-xiang-lian-biao-lcof |
| 226. 翻转二叉树 |
6 |
https://leetcode-cn.com/problems/invert-binary-tree |
| 209. 长度最小的子数组 |
6 |
https://leetcode-cn.com/problems/minimum-size-subarray-sum |
| 862. 和至少为 K 的最短子数组 |
6 |
https://leetcode-cn.com/problems/shortest-subarray-with-sum-at-least-k |
| 11. 盛最多水的容器 |
6 |
https://leetcode-cn.com/problems/container-with-most-water |
| 补充题7. 木头切割问题 |
6 |
https://mp.weixin.qq.com/s/FQma0bdAWbzLMmCKhZRk7w |
| 补充题23. 检测循环依赖 |
6 |
https://mp.weixin.qq.com/s/pCRscwKqQdYYN7M1Sia7xA |
| 108. 将有序数组转换为二叉搜索树 |
5 |
https://leetcode-cn.com/problems/convert-sorted-array-to-binary-search-tree |
| 1143. 最长公共子序列 |
5 |
https://leetcode-cn.com/problems/longest-common-subsequence |
| 297. 二叉树的序列化与反序列化 |
5 |
https://leetcode-cn.com/problems/serialize-and-deserialize-binary-tree |
| 560. 和为K的子数组 |
5 |
https://leetcode-cn.com/problems/subarray-sum-equals-k |
| 704. 二分查找 |
5 |
https://leetcode-cn.com/problems/binary-search |
| 670. 最大交换 |
5 |
https://leetcode-cn.com/problems/maximum-swap |
| 421. 数组中两个数的最大异或值 |
5 |
https://leetcode-cn.com/problems/maximum-xor-of-two-numbers-in-an-array |
| 104. 二叉树的最大深度 |
5 |
https://leetcode-cn.com/problems/maximum-depth-of-binary-tree |
| 135. 分发糖果 |
5 |
https://leetcode-cn.com/problems/candy |
| 151. 翻转字符串里的单词 |
5 |
https://leetcode-cn.com/problems/reverse-words-in-a-string |
| 287. 寻找重复数 |
5 |
https://leetcode-cn.com/problems/find-the-duplicate-number |
| 528. 按权重随机选择 |
5 |
https://leetcode-cn.com/problems/random-pick-with-weight |
| 91. 解码方法 |
5 |
https://leetcode-cn.com/problems/decode-ways |
| 59. 螺旋矩阵 II |
5 |
https://leetcode-cn.com/problems/spiral-matrix-ii |
| 718. 最长重复子数组 |
5 |
https://leetcode-cn.com/problems/maximum-length-of-repeated-subarray |
| 139. 单词拆分 |
4 |
https://leetcode-cn.com/problems/word-break |
| 剑指 Offer 11. 旋转数组的最小数字 |
4 |
https://leetcode-cn.com/problems/xuan-zhuan-shu-zu-de-zui-xiao-shu-zi-lcof |
| 62. 不同路径 |
4 |
https://leetcode-cn.com/problems/unique-paths |
| 剑指 Offer 51. 数组中的逆序对 |
4 |
https://leetcode-cn.com/problems/shu-zu-zhong-de-ni-xu-dui-lcof |
| 40. 组合总和 II |
4 |
https://leetcode-cn.com/problems/combination-sum-ii |
| 1047. 删除字符串中的所有相邻重复项 |
4 |
https://leetcode-cn.com/problems/remove-all-adjacent-duplicates-in-string |
| 402. 移掉K位数字 |
4 |
https://leetcode-cn.com/problems/remove-k-digits |
| 169. 多数元素 |
4 |
https://leetcode-cn.com/problems/majority-element |
| 152. 乘积最大子数组 |
4 |
https://leetcode-cn.com/problems/maximum-product-subarray |
| 50. Pow(x, n) |
4 |
https://leetcode-cn.com/problems/powx-n |
| 4. 寻找两个正序数组的中位数 |
4 |
https://leetcode-cn.com/problems/median-of-two-sorted-arrays |
| 456. 132模式 |
4 |
https://leetcode-cn.com/problems/132-pattern |
| 239. 滑动窗口最大值 |
4 |
https://leetcode-cn.com/problems/sliding-window-maximum |
| 722. 删除注释 |
4 |
https://leetcode-cn.com/problems/remove-comments |
| 1095. 山脉数组中查找目标值 |
4 |
https://leetcode-cn.com/problems/find-in-mountain-array |
| 72. 编辑距离 |
4 |
https://leetcode-cn.com/problems/edit-distance |
| 153. 寻找旋转排序数组中的最小值 |
4 |
https://leetcode-cn.com/problems/find-minimum-in-rotated-sorted-array |
| 补充题3. 求区间最小数乘区间和的最大值 |
4 |
https://mp.weixin.qq.com/s/UFv7pt_djjZoK_gzUBrRXA |
| 补充题6. 手撕堆排序 |
4 |
https://leetcode-cn.com/problems/sort-an-array |
| 227. 基本计算器 II |
4 |
https://leetcode-cn.com/problems/basic-calculator-ii |
| 763. 划分字母区间 |
4 |
https://leetcode-cn.com/problems/partition-labels |
| 剑指 Offer 53 - I. 在排序数组中查找数字 I |
4 |
https://leetcode-cn.com/problems/zai-pai-xu-shu-zu-zhong-cha-zhao-shu-zi-lcof |
| 剑指 Offer 61. 扑克牌中的顺子 |
3 |
https://leetcode-cn.com/problems/bu-ke-pai-zhong-de-shun-zi-lcof |
| 977. 有序数组的平方 |
3 |
https://leetcode-cn.com/problems/squares-of-a-sorted-array |
| 剑指 Offer 09. 用两个栈实现队列 |
3 |
https://leetcode-cn.com/problems/yong-liang-ge-zhan-shi-xian-dui-lie-lcof |
| 503. 下一个更大元素 II |
3 |
https://leetcode-cn.com/problems/next-greater-element-ii |
| 283. 移动零 |
3 |
https://leetcode-cn.com/problems/move-zeroes |
| 166. 分数到小数 |
3 |
https://leetcode-cn.com/problems/fraction-to-recurring-decimal |
| 264. 丑数 II |
3 |
https://leetcode-cn.com/problems/ugly-number-ii |
| 210. 课程表 II |
3 |
https://leetcode-cn.com/problems/course-schedule-ii |
| 394. 字符串解码 |
3 |
https://leetcode-cn.com/problems/decode-string |
| 145. 二叉树的后序遍历 |
3 |
https://leetcode-cn.com/problems/binary-tree-postorder-traversal |
| 71. 简化路径 |
3 |
https://leetcode-cn.com/problems/simplify-path |
| 134. 加油站 |
3 |
https://leetcode-cn.com/problems/gas-station |
| 340. 至多包含 K 个不同字符的最长子串 |
3 |
https://leetcode-cn.com/problems/longest-substring-with-at-most-k-distinct-characters |
| 86. 分隔链表 |
3 |
https://leetcode-cn.com/problems/partition-list |
| 329. 矩阵中的最长递增路径 |
3 |
https://leetcode-cn.com/problems/longest-increasing-path-in-a-matrix |
| 144. 二叉树的前序遍历 |
3 |
https://leetcode-cn.com/problems/binary-tree-preorder-traversal |
| 10. 正则表达式匹配 |
3 |
https://leetcode-cn.com/problems/regular-expression-matching |
| 剑指 Offer 46. 把数字翻译成字符串 |
3 |
https://leetcode-cn.com/problems/ba-shu-zi-fan-yi-cheng-zi-fu-chuan-lcof |
| 136. 只出现一次的数字 |
3 |
https://leetcode-cn.com/problems/single-number |
| 18. 四数之和 |
3 |
https://leetcode-cn.com/problems/4sum |
| 剑指 Offer 27. 二叉树的镜像 |
3 |
https://leetcode-cn.com/problems/er-cha-shu-de-jing-xiang-lcof |
| 225. 用队列实现栈 |
3 |
https://leetcode-cn.com/problems/implement-stack-using-queues |
| 647. 回文子串 |
3 |
https://leetcode-cn.com/problems/palindromic-substrings |
| 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 |
| 165. 比较版本号 |
3 |
https://leetcode-cn.com/problems/compare-version-numbers |
| 887. 鸡蛋掉落 |
3 |
https://leetcode-cn.com/problems/super-egg-drop |
| 106. 从中序与后序遍历序列构造二叉树 |
3 |
https://leetcode-cn.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal |
| 498. 对角线遍历 |
3 |
https://leetcode-cn.com/problems/diagonal-traverse |
| 354. 俄罗斯套娃信封问题 |
3 |
https://leetcode-cn.com/problems/russian-doll-envelopes |
| 767. 重构字符串 |
3 |
https://leetcode-cn.com/problems/reorganize-string |
| 1254. 统计封闭岛屿的数目 |
2 |
https://leetcode-cn.com/problems/number-of-closed-islands |
| 347. 前 K 个高频元素 |
2 |
https://leetcode-cn.com/problems/top-k-frequent-elements |
| 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 |
| 剑指 Offer 45. 把数组排成最小的数 |
2 |
https://leetcode-cn.com/problems/ba-shu-zu-pai-cheng-zui-xiao-de-shu-lcof |
| 99. 恢复二叉搜索树 |
2 |
https://leetcode-cn.com/problems/recover-binary-search-tree |
| 125. 验证回文串 |
2 |
https://leetcode-cn.com/problems/valid-palindrome |
| 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 |
| 523. 连续的子数组和 |
2 |
https://leetcode-cn.com/problems/continuous-subarray-sum |
| 剑指 Offer 48. 最长不含重复字符的子字符串 |
2 |
https://leetcode-cn.com/problems/zui-chang-bu-han-zhong-fu-zi-fu-de-zi-zi-fu-chuan-lcof |
| 剑指 Offer 04. 二维数组中的查找 |
2 |
https://leetcode-cn.com/problems/er-wei-shu-zu-zhong-de-cha-zhao-lcof |
| 补充题24. 双栈排序 |
2 |
https://mp.weixin.qq.com/s/g_AqwsSEUwlRSevnStPkEA |
| 208. 实现 Trie (前缀树) |
2 |
https://leetcode-cn.com/problems/implement-trie-prefix-tree |
| 剑指 Offer 19. 正则表达式匹配 |
2 |
https://leetcode-cn.com/problems/zheng-ze-biao-da-shi-pi-pei-lcof |
| 895. 最大频率栈 |
2 |
https://leetcode-cn.com/problems/maximum-frequency-stack |
| 398. 随机数索引 |
2 |
https://leetcode-cn.com/problems/random-pick-index |
| 45. 跳跃游戏 II |
2 |
https://leetcode-cn.com/problems/jump-game-ii |
| 416. 分割等和子集 |
2 |
https://leetcode-cn.com/problems/partition-equal-subset-sum |
| 668. 乘法表中第k小的数 |
2 |
https://leetcode-cn.com/problems/kth-smallest-number-in-multiplication-table |
| 120. 三角形最小路径和 |
2 |
https://leetcode-cn.com/problems/triangle |
| 123. 买卖股票的最佳时机 III |
2 |
https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-iii |
| 154. 寻找旋转排序数组中的最小值 II |
2 |
https://leetcode-cn.com/problems/find-minimum-in-rotated-sorted-array-ii |
| 147. 对链表进行插入排序 |
2 |
https://leetcode-cn.com/problems/insertion-sort-list |
| 785. 判断二分图 |
2 |
https://leetcode-cn.com/problems/is-graph-bipartite |
| 468. 验证IP地址 |
2 |
https://leetcode-cn.com/problems/validate-ip-address |
| 295. 数据流的中位数 |
2 |
https://leetcode-cn.com/problems/find-median-from-data-stream |
| 404. 左叶子之和 |
2 |
https://leetcode-cn.com/problems/sum-of-left-leaves |
| 84. 柱状图中最大的矩形 |
2 |
https://leetcode-cn.com/problems/largest-rectangle-in-histogram |
| 43. 字符串相乘 |
2 |
https://leetcode-cn.com/problems/multiply-strings |
| 14. 最长公共前缀 |
2 |
https://leetcode-cn.com/problems/longest-common-prefix |
| 974. 和可被 K 整除的子数组 |
2 |
https://leetcode-cn.com/problems/subarray-sums-divisible-by-k |
| 922. 按奇偶排序数组 II |
2 |
https://leetcode-cn.com/problems/sort-array-by-parity-ii |
| 75. 颜色分类 |
2 |
https://leetcode-cn.com/problems/sort-colors |
| 191. 位1的个数 |
2 |
https://leetcode-cn.com/problems/number-of-1-bits |
| 60. 第k个排列 |
2 |
https://leetcode-cn.com/problems/permutation-sequence |
| 补充题10. 36进制减法 |
2 |
https://mp.weixin.qq.com/s/ub9GpTBjDF55hZld3V2rEA |
| 补充题5. 手撕归并排序 |
2 |
https://leetcode-cn.com/problems/sort-an-array |
| 189. 旋转数组 |
2 |
https://leetcode-cn.com/problems/rotate-array |
| 74. 搜索二维矩阵 |
2 |
https://leetcode-cn.com/problems/search-a-2d-matrix |
| 补充题14. 阿拉伯数字转中文数字 |
2 |
|
| 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 |
| 253. 会议室 II |
2 |
https://leetcode-cn.com/problems/meeting-rooms-ii |
| 7. 整数反转 |
2 |
https://leetcode-cn.com/problems/reverse-integer |
| 47. 全排列 II |
2 |
https://leetcode-cn.com/problems/permutations-ii |
| 85. 最大矩形 |
2 |
https://leetcode-cn.com/problems/maximal-rectangle |
| 81. 搜索旋转排序数组 II |
2 |
https://leetcode-cn.com/problems/search-in-rotated-sorted-array-ii |
| 44. 通配符匹配 |
2 |
https://leetcode-cn.com/problems/wildcard-matching |
| 703. 数据流中的第K大元素 |
2 |
https://leetcode-cn.com/problems/kth-largest-element-in-a-stream |
| 443. 压缩字符串 |
2 |
https://leetcode-cn.com/problems/string-compression |
| 381. O(1) 时间插入、删除和获取随机元素 - 允许重复 |
2 |
https://leetcode-cn.com/problems/insert-delete-getrandom-o1-duplicates-allowed |
| 补充题20. 立方根 |
2 |
|
| 395. 至少有K个重复字符的最长子串 |
2 |
https://leetcode-cn.com/problems/longest-substring-with-at-least-k-repeating-characters |
| 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 |
| 111. 二叉树的最小深度 |
1 |
https://leetcode-cn.com/problems/minimum-depth-of-binary-tree |
| 994. 腐烂的橘子 |
1 |
https://leetcode-cn.com/problems/rotting-oranges |
| 344. 反转字符串 |
1 |
https://leetcode-cn.com/problems/reverse-string |
| 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 |
| 515. 在每个树行中找最大值 |
1 |
https://leetcode-cn.com/problems/find-largest-value-in-each-tree-row |
| 1147. 段式回文 |
1 |
https://leetcode-cn.com/problems/longest-chunked-palindrome-decomposition |
| 876. 链表的中间结点 |
1 |
https://leetcode-cn.com/problems/middle-of-the-linked-list |
| 100. 相同的树 |
1 |
https://leetcode-cn.com/problems/same-tree |
| 842. 将数组拆分成斐波那契序列 |
1 |
https://leetcode-cn.com/problems/split-array-into-fibonacci-sequence |
| 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 |
| 剑指 Offer 38. 字符串的排列 |
1 |
https://leetcode-cn.com/problems/zi-fu-chuan-de-pai-lie-lcof |
| 剑指 Offer 24. 反转链表 |
1 |
https://leetcode-cn.com/problems/fan-zhuan-lian-biao-lcof |
| 剑指 Offer 53 - II. 0～n-1中缺失的数字 |
1 |
https://leetcode-cn.com/problems/que-shi-de-shu-zi-lcof |
| 701. 二叉搜索树中的插入操作 |
1 |
https://leetcode-cn.com/problems/insert-into-a-binary-search-tree |
| 349. 两个数组的交集 |
1 |
https://leetcode-cn.com/problems/intersection-of-two-arrays |
| 1156. 单字符重复子串的最大长度 |
1 |
https://leetcode-cn.com/problems/swap-for-longest-repeated-character-substring |
| 449. 序列化和反序列化二叉搜索树 |
1 |
https://leetcode-cn.com/problems/serialize-and-deserialize-bst |
| 面试题 08.12. 八皇后 |
1 |
https://leetcode-cn.com/problems/eight-queens-lcci |
| 37. 解数独 |
1 |
https://leetcode-cn.com/problems/sudoku-solver |
| 410. 分割数组的最大值 |
1 |
https://leetcode-cn.com/problems/split-array-largest-sum |
| 694. 不同岛屿的数量 |
1 |
https://leetcode-cn.com/problems/number-of-distinct-islands |
| 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 |
| 912. 排序数组 |
1 |
https://leetcode-cn.com/problems/sort-an-array |
| 173. 二叉搜索树迭代器 |
1 |
https://leetcode-cn.com/problems/binary-search-tree-iterator |
| 1139. 最大的以 1 为边界的正方形 |
1 |
https://leetcode-cn.com/problems/largest-1-bordered-square |
| 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 |
| 325. 和等于 k 的最长子数组长度 |
1 |
https://leetcode-cn.com/problems/maximum-size-subarray-sum-equals-k |
| 1363. 形成三的最大倍数 |
1 |
https://leetcode-cn.com/problems/largest-multiple-of-three |
| 951. 翻转等价二叉树 |
1 |
https://leetcode-cn.com/problems/flip-equivalent-binary-trees |
| 107. 二叉树的层次遍历 II |
1 |
https://leetcode-cn.com/problems/binary-tree-level-order-traversal-ii |
| 637. 二叉树的层平均值 |
1 |
https://leetcode-cn.com/problems/average-of-levels-in-binary-tree |
| 277. 搜寻名人 |
1 |
https://leetcode-cn.com/problems/find-the-celebrity |
| 321. 拼接最大数 |
1 |
https://leetcode-cn.com/problems/create-maximum-number |
| 525. 连续数组 |
1 |
https://leetcode-cn.com/problems/contiguous-array |
| 剑指 Offer 58 - II. 左旋转字符串 |
1 |
https://leetcode-cn.com/problems/zuo-xuan-zhuan-zi-fu-chuan-lcof |
| 97. 交错字符串 |
1 |
https://leetcode-cn.com/problems/interleaving-string |
| 204. 计数质数 |
1 |
https://leetcode-cn.com/problems/count-primes |
| 202. 快乐数 |
1 |
https://leetcode-cn.com/problems/happy-number |
| 1669. 合并两个链表 |
1 |
https://leetcode-cn.com/problems/merge-in-between-linked-lists |
| 807. 保持城市天际线 |
1 |
https://leetcode-cn.com/problems/max-increase-to-keep-city-skyline |
| 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 05. 替换空格 |
1 |
https://leetcode-cn.com/problems/ti-huan-kong-ge-lcof |
| 279. 完全平方数 |
1 |
https://leetcode-cn.com/problems/perfect-squares |
| 17. 电话号码的字母组合 |
1 |
https://leetcode-cn.com/problems/letter-combinations-of-a-phone-number |
| 459. 重复的子字符串 |
1 |
https://leetcode-cn.com/problems/repeated-substring-pattern |
| 剑指 Offer 59 - II. 队列的最大值 |
1 |
https://leetcode-cn.com/problems/dui-lie-de-zui-da-zhi-lcof |
| 260. 只出现一次的数字 III |
1 |
https://leetcode-cn.com/problems/single-number-iii |
| 1438. 绝对差不超过限制的最长连续子数组 |
1 |
https://leetcode-cn.com/problems/longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit |
| 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 |
| 836. 矩形重叠 |
1 |
https://leetcode-cn.com/problems/rectangle-overlap |
| 1172. 餐盘栈 |
1 |
https://leetcode-cn.com/problems/dinner-plate-stacks |
| 547. 省份数量（原朋友圈） |
1 |
https://leetcode-cn.com/problems/number-of-provinces |
| 面试题 17.24. 最大子矩阵 |
1 |
https://leetcode-cn.com/problems/max-submatrix-lcci |
| 1302. 层数最深叶子节点的和 |
1 |
https://leetcode-cn.com/problems/deepest-leaves-sum |
| 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 |
| 127. 单词接龙 |
1 |
https://leetcode-cn.com/problems/word-ladder |
| 剑指 Offer 55 - II. 平衡二叉树 |
1 |
https://leetcode-cn.com/problems/ping-heng-er-cha-shu-lcof |
| 剑指 Offer 55 - I. 二叉树的深度 |
1 |
https://leetcode-cn.com/problems/er-cha-shu-de-shen-du-lcof |
| 面试题 08.05. 递归乘法 |
1 |
https://leetcode-cn.com/problems/recursive-mulitply-lcci |
| 179. 最大数 |
1 |
https://leetcode-cn.com/problems/largest-number |
| 1107. 每日新用户统计 |
1 |
https://leetcode-cn.com/problems/new-users-daily-count |
| 剑指 Offer 10- I. 斐波那契数列 |
1 |
https://leetcode-cn.com/problems/fei-bo-na-qi-shu-lie-lcof |
| 63. 不同路径 II |
1 |
https://leetcode-cn.com/problems/unique-paths-ii |
| 397. 整数替换 |
1 |
https://leetcode-cn.com/problems/integer-replacement |
| 564. 寻找最近的回文数 |
1 |
https://leetcode-cn.com/problems/find-the-closest-palindrome |
| 765. 情侣牵手 |
1 |
https://leetcode-cn.com/problems/couples-holding-hands |
| 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 |
| 77. 组合 |
1 |
https://leetcode-cn.com/problems/combinations |
| 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 |
| 384. 打乱数组 |
1 |
https://leetcode-cn.com/problems/shuffle-an-array |
| 剑指 Offer 56 - I. 数组中数字出现的次数 |
1 |
https://leetcode-cn.com/problems/shu-zu-zhong-shu-zi-chu-xian-de-ci-shu-lcof |
| 28. 实现 strStr() |
1 |
https://leetcode-cn.com/problems/implement-strstr |
| 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 |
| 207. 课程表 |
1 |
https://leetcode-cn.com/problems/course-schedule |
| 386. 字典序排数 |
1 |
https://leetcode-cn.com/problems/lexicographical-numbers |
| 面试题 03.03. 堆盘子 |
1 |
https://leetcode-cn.com/problems/stack-of-plates-lcci |
| 331. 验证二叉树的前序序列化 |
1 |
https://leetcode-cn.com/problems/verify-preorder-serialization-of-a-binary-tree |
| 剑指 Offer 28. 对称的二叉树 |
1 |
https://leetcode-cn.com/problems/dui-cheng-de-er-cha-shu-lcof |
| 剑指 Offer 68 - II. 二叉树的最近公共祖先 |
1 |
https://leetcode-cn.com/problems/er-cha-shu-de-zui-jin-gong-gong-zu-xian-lcof |
| 848. 字母移位 |
1 |
https://leetcode-cn.com/problems/shifting-letters |
| 6. Z 字形变换 |
1 |
https://leetcode-cn.com/problems/zigzag-conversion |
| 990. 等式方程的可满足性 |
1 |
https://leetcode-cn.com/problems/satisfiability-of-equality-equations |
| 567. 字符串的排列 |
1 |
https://leetcode-cn.com/problems/permutation-in-string |
| 496. 下一个更大元素 I |
1 |
https://leetcode-cn.com/problems/next-greater-element-i |
| 967. 连续差相同的数字 |
1 |
https://leetcode-cn.com/problems/numbers-with-same-consecutive-differences |
| 1405. 最长快乐字符串 |
1 |
https://leetcode-cn.com/problems/longest-happy-string |
| 1353. 最多可以参加的会议数目 |
1 |
https://leetcode-cn.com/problems/maximum-number-of-events-that-can-be-attended |
| 1574. 删除最短的子数组使剩余数组有序 |
1 |
https://leetcode-cn.com/problems/shortest-subarray-to-be-removed-to-make-array-sorted |
| 949. 给定数字能组成的最大时间 |
1 |
https://leetcode-cn.com/problems/largest-time-for-given-digits |
| 剑指 Offer 31. 栈的压入、弹出序列 |
1 |
https://leetcode-cn.com/problems/zhan-de-ya-ru-dan-chu-xu-lie-lcof |
| 213. 打家劫舍 II |
1 |
https://leetcode-cn.com/problems/house-robber-ii |
| 剑指 Offer 40. 最小的k个数 |
1 |
https://leetcode-cn.com/problems/zui-xiao-de-kge-shu-lcof |
| 1475. 商品折扣后的最终价格 |
1 |
https://leetcode-cn.com/problems/final-prices-with-a-special-discount-in-a-shop |
| 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 |
| 706. 设计哈希映射 |
1 |
https://leetcode-cn.com/problems/design-hashmap |
| 252. 会议室 |
1 |
https://leetcode-cn.com/problems/meeting-rooms |
| 剑指 Offer 63. 股票的最大利润 |
1 |
https://leetcode-cn.com/problems/gu-piao-de-zui-da-li-run-lcof |
| 680. 验证回文字符串 Ⅱ |
1 |
https://leetcode-cn.com/problems/valid-palindrome-ii |
| 341. 扁平化嵌套列表迭代器 |
1 |
https://leetcode-cn.com/problems/flatten-nested-list-iterator |
| 140. 单词拆分 II |
1 |
https://leetcode-cn.com/problems/word-break-ii |
| 716. 最大栈 |
1 |
https://leetcode-cn.com/problems/max-stack |
| 214. 最短回文串 |
1 |
https://leetcode-cn.com/problems/shortest-palindrome |
| 633. 平方数之和 |
1 |
https://leetcode-cn.com/problems/sum-of-square-numbers |
| 补充题17. 两个有序数组第k小的数 |
1 |
|
| 589. N叉树的前序遍历 |
1 |
https://leetcode-cn.com/problems/n-ary-tree-preorder-traversal |
| 1675. 数组的最小偏移量 |
1 |
https://leetcode-cn.com/problems/minimize-deviation-in-array |
| 485. 最大连续1的个数 |
1 |
https://leetcode-cn.com/problems/max-consecutive-ones |
| 补充题8. 计算数组的小和 |
1 |
https://mp.weixin.qq.com/s/rMsbcUf9ZPhvfRoyZGW6HA |
| 剑指 Offer 34. 二叉树中和为某一值的路径 |
1 |
https://leetcode-cn.com/problems/er-cha-shu-zhong-he-wei-mou-yi-zhi-de-lu-jing-lcof |
| 剑指 Offer 17. 打印从1到最大的n位数 |
1 |
https://leetcode-cn.com/problems/da-yin-cong-1dao-zui-da-de-nwei-shu-lcof |
| 861. 翻转矩阵后的得分 |
1 |
https://leetcode-cn.com/problems/score-after-flipping-matrix |
| 168. Excel表列名称 |
1 |
https://leetcode-cn.com/problems/excel-sheet-column-title |
| 剑指 Offer 14- I. 剪绳子 |
1 |
https://leetcode-cn.com/problems/jian-sheng-zi-lcof |
| 96. 不同的二叉搜索树 |
1 |
https://leetcode-cn.com/problems/unique-binary-search-trees |
| 13. 罗马数字转整数 |
1 |
https://leetcode-cn.com/problems/roman-to-integer |
| 1190. 反转每对括号间的子串 |
1 |
https://leetcode-cn.com/problems/reverse-substrings-between-each-pair-of-parentheses |
| 16. 最接近的三数之和 |
1 |
https://leetcode-cn.com/problems/3sum-closest |
| 216. 组合总和 III |
1 |
https://leetcode-cn.com/problems/combination-sum-iii |
| 剑指 Offer 32 - II. 从上到下打印二叉树 II |
1 |
https://leetcode-cn.com/problems/cong-shang-dao-xia-da-yin-er-cha-shu-ii-lcof |
| 736. Lisp 语法解析 |
1 |
https://leetcode-cn.com/problems/parse-lisp-expression |
| 137. 只出现一次的数字 II |
1 |
https://leetcode-cn.com/problems/single-number-ii |