| 1 |
两数之和 two-sum |
Python Golang |
📝 |
Easy |
| 2 |
两数相加 add-two-numbers |
Python Golang |
📝 |
Medium |
| 4 |
寻找两个正序数组的中位数 median-of-two-sorted-arrays |
Python |
📝 |
Hard |
| 5 |
最长回文子串 longest-palindromic-substring |
Python |
📝 |
Medium |
| 6 |
N 字形变换 zigzag-conversion |
Python |
📝 |
Medium |
| 7 |
整数反转 reverse-integer |
Python |
📝 |
Medium |
| 8 |
字符串转换整数 (atoi) string-to-integer-atoi |
Python |
📝 |
Medium |
| 9 |
回文数 palindrome-number |
Python |
📝 |
Easy |
| 11 |
盛最多水的容器 container-with-most-water |
Python |
📝 |
Medium |
| 12 |
整数转罗马数字 integer-to-roman |
Python |
📝 |
Medium |
| 13 |
罗马数字转整数 roman-to-integer |
Python |
📝 |
Easy |
| 14 |
最长公共前缀 longest-common-prefix |
Python |
📝 |
Easy |
| 15 |
三数之和 3sum |
Python |
📝 |
Medium |
| 16 |
最接近的三数之和 3sum-closest |
Python |
📝 |
Medium |
| 17 |
电话号码的字母组合 letter-combinations-of-a-phone-number |
Python |
📝 |
Medium |
| 18 |
四数之和 4sum |
Python |
📝 |
Medium |
| 19 |
删除链表的倒数第 N 个结点 remove-nth-node-from-end-of-list |
Python |
📝 |
Medium |
| 20 |
有效的括号 valid-parentheses |
Python |
📝 |
Easy |
| 21 |
合并两个有序链表 merge-two-sorted-lists |
Python |
📝 |
Easy |
| 22 |
括号生成 generate-parentheses |
Python |
📝 |
Medium |
| 23 |
合并K个升序链表 merge-k-sorted-lists |
Python |
📝 |
Hard |
| 24 |
两两交换链表中的节点 swap-nodes-in-pairs |
Python |
📝 |
Medium |
| 25 |
K 个一组翻转链表 reverse-nodes-in-k-group |
Python |
📝 |
Hard |
| 26 |
删除有序数组中的重复项 remove-duplicates-from-sorted-array |
Python |
📝 |
Easy |
| 27 |
移除元素 remove-element |
Python |
📝 |
Easy |
| 28 |
找出字符串中第一个匹配项的下标 find-the-index-of-the-first-occurrence-in-a-string |
Python |
📝 |
Medium |
| 29 |
两数相除 divide-two-integers |
Python |
📝 |
Medium |
| 33 |
搜索旋转排序数组 search-in-rotated-sorted-array |
Python |
📝 |
Medium |
| 34 |
在排序数组中查找元素的第一个和最后一个位置 find-first-and-last-position-of-element-in-sorted-array |
Python |
📝 |
Medium |
| 35 |
搜索插入位置 search-insert-position |
Python |
📝 |
Easy |
| 36 |
有效的数独 valid-sudoku |
Python |
📝 |
Medium |
| 37 |
解数独 sudoku-solver |
Python |
📝 |
Hard |
| 38 |
外观数列 count-and-say |
Python |
📝 |
Medium |
| 39 |
组合总和 combination-sum |
Python |
📝 |
Medium |
| 40 |
组合总和 II combination-sum-ii |
Python |
📝 |
Medium |
| 42 |
接雨水 trapping-rain-water |
Python |
📝 |
Hard |
| 43 |
字符串相乘 multiply-strings |
Python |
📝 |
Medium |
| 46 |
全排列 permutations |
Python |
📝 |
Medium |
| 47 |
全排列 II permutations-ii |
Python |
📝 |
Medium |
| 50 |
Pow(x, n) powx-n |
Python |
📝 |
Medium |
| 51 |
N 皇后 n-queens |
Python |
📝 |
Hard |
| 53 |
最大子数组和 maximum-subarray |
Python |
📝 |
Medium |
| 54 |
螺旋矩阵 spiral-matrix |
Python |
📝 |
Medium |
| 58 |
最后一个单词的长度 length-of-last-word |
Python |
📝 |
Easy |
| 59 |
螺旋矩阵 II spiral-matrix-ii |
Python |
📝 |
Medium |
| 61 |
旋转链表 rotate-list |
Python |
📝 |
Medium |
| 64 |
最小路径和 minimum-path-sum |
Python |
📝 |
Medium |
| 66 |
加一 plus-one |
Python |
📝 |
Easy |
| 67 |
二进制求和 add-binary |
Python |
📝 |
Easy |
| 69 |
x 的平方根 sqrtx |
Python |
📝 |
Easy |
| 70 |
爬楼梯 climbing-stairs |
Python |
📝 |
Easy |
| 72 |
编辑距离 edit-distance |
Python |
📝 |
Hard |
| 74 |
搜索二维矩阵 search-a-2d-matrix |
Python |
📝 |
Medium |
| 77 |
组合 combinations |
Python |
📝 |
Medium |
| 78 |
子集 subsets |
Python |
📝 |
Medium |
| 81 |
搜索旋转排序数组 II search-in-rotated-sorted-array-ii |
Python |
📝 |
Medium |
| 82 |
删除排序链表中的重复元素 II remove-duplicates-from-sorted-list-ii |
Python |
📝 |
Medium |
| 83 |
删除排序链表中的重复元素 remove-duplicates-from-sorted-list |
Python |
📝 |
Easy |
| 86 |
分隔链表 partition-list |
Python |
📝 |
Medium |
| 88 |
合并两个有序数组 merge-sorted-array |
Python |
📝 |
Easy |
| 89 |
格雷编码 gray-code |
Python |
📝 |
Medium |
| 90 |
子集 II subsets-ii |
Python |
📝 |
Medium |
| 92 |
反转链表 II reverse-linked-list-ii |
Python |
📝 |
Medium |
| 94 |
二叉树的中序遍历 binary-tree-inorder-traversal |
Python |
📝 |
Easy |
| 98 |
验证二叉搜索树 validate-binary-search-tree |
Python |
📝 |
Medium |
| 100 |
相同的树 same-tree |
Python |
📝 |
Easy |
| 101 |
对称二叉树 symmetric-tree |
Python |
📝 |
Easy |
| 104 |
二叉树的最大深度 maximum-depth-of-binary-tree |
Python |
📝 |
Easy |
| 105 |
从前序与中序遍历序列构造二叉树 construct-binary-tree-from-preorder-and-inorder-traversal |
Python |
📝 |
Medium |
| 106 |
从中序与后序遍历序列构造二叉树 construct-binary-tree-from-inorder-and-postorder-traversal |
Python |
📝 |
Medium |
| 107 |
二叉树的层序遍历 II binary-tree-level-order-traversal-ii |
Python |
📝 |
Medium |
| 108 |
将有序数组转换为二叉搜索树 convert-sorted-array-to-binary-search-tree |
Python |
📝 |
Easy |
| 111 |
二叉树的最小深度 minimum-depth-of-binary-tree |
Python |
📝 |
Easy |
| 112 |
路径总和 path-sum |
Python |
📝 |
Easy |
| 114 |
二叉树展开为链表 flatten-binary-tree-to-linked-list |
Python |
📝 |
Medium |
| 116 |
填充每个节点的下一个右侧节点指针 populating-next-right-pointers-in-each-node |
Python |
📝 |
Medium |
| 118 |
杨辉三角 pascals-triangle |
Python |
📝 |
Easy |
| 119 |
杨辉三角 II pascals-triangle-ii |
Python |
📝 |
Easy |
| 121 |
买卖股票的最佳时机 best-time-to-buy-and-sell-stock |
Python |
📝 |
Easy |
| 122 |
买卖股票的最佳时机 II best-time-to-buy-and-sell-stock-ii |
Python |
📝 |
Medium |
| 125 |
验证回文串 valid-palindrome |
Python |
📝 |
Easy |
| 131 |
分割回文串 palindrome-partitioning |
Python |
📝 |
Medium |
| 136 |
只出现一次的数字 single-number |
Python |
📝 |
Easy |
| 137 |
只出现一次的数字 II single-number-ii |
Python |
📝 |
Medium |
| 141 |
环形链表 linked-list-cycle |
Python |
📝 |
Easy |
| 142 |
环形链表 II linked-list-cycle-ii |
Python |
📝 |
Medium |
| 143 |
重排链表 reorder-list |
Python |
📝 |
Medium |
| 146 |
LRU 缓存 lru-cache |
Python |
📝 |
Medium |
| 147 |
对链表进行插入排序 insertion-sort-list |
Python |
📝 |
Medium |
| 148 |
排序链表 sort-list |
Python |
📝 |
Medium |
| 153 |
寻找旋转排序数组中的最小值 find-minimum-in-rotated-sorted-array |
Python |
📝 |
Medium |
| 154 |
寻找旋转排序数组中的最小值 II find-minimum-in-rotated-sorted-array-ii |
Python |
📝 |
Hard |
| 155 |
最小栈 min-stack |
Python |
📝 |
Medium |
| 160 |
相交链表 intersection-of-two-linked-lists |
Python |
📝 |
Easy |
| 162 |
寻找峰值 find-peak-element |
Python |
📝 |
Medium |
| 167 |
两数之和 II - 输入有序数组 two-sum-ii-input-array-is-sorted |
Python |
📝 |
Medium |
| 168 |
Excel表列名称 excel-sheet-column-title |
Python |
📝 |
Easy |
| 169 |
多数元素 majority-element |
Python |
📝 |
Easy |
| 171 |
Excel 表列序号 excel-sheet-column-number |
Python |
📝 |
Easy |
| 172 |
阶乘后的零 factorial-trailing-zeroes |
Python |
📝 |
Medium |
| 189 |
轮转数组 rotate-array |
Python |
📝 |
Medium |
| 190 |
颠倒二进制位 reverse-bits |
Python |
📝 |
Easy |
| 191 |
位1的个数 number-of-1-bits |
Python |
📝 |
Easy |
| 198 |
打家劫舍 house-robber |
Python |
📝 |
Medium |
| 202 |
快乐数 happy-number |
Python |
📝 |
Easy |
| 203 |
移除链表元素 remove-linked-list-elements |
Python |
📝 |
Easy |
| 204 |
计数质数 count-primes |
Python |
📝 |
Medium |
| 205 |
同构字符串 isomorphic-strings |
Python |
📝 |
Easy |
| 206 |
反转链表 reverse-linked-list |
Python |
📝 |
Easy |
| 208 |
实现 Trie (前缀树) implement-trie-prefix-tree |
Python |
📝 |
Medium |
| 215 |
数组中的第K个最大元素 kth-largest-element-in-an-array |
Python |
📝 |
Medium |
| 217 |
存在重复元素 contains-duplicate |
Python |
📝 |
Easy |
| 219 |
存在重复元素 II contains-duplicate-ii |
Python |
📝 |
Easy |
| 222 |
完全二叉树的节点个数 count-complete-tree-nodes |
Python |
📝 |
Medium |
| 225 |
用队列实现栈 implement-stack-using-queues |
Python |
📝 |
Easy |
| 226 |
翻转二叉树 invert-binary-tree |
Python |
📝 |
Easy |
| 230 |
二叉搜索树中第K小的元素 kth-smallest-element-in-a-bst |
Python |
📝 |
Medium |
| 231 |
2 的幂 power-of-two |
Python |
📝 |
Easy |
| 232 |
用栈实现队列 implement-queue-using-stacks |
Python |
📝 |
Easy |
| 234 |
回文链表 palindrome-linked-list |
Python |
📝 |
Easy |
| 235 |
二叉搜索树的最近公共祖先 lowest-common-ancestor-of-a-binary-search-tree |
Python |
📝 |
Medium |
| 236 |
二叉树的最近公共祖先 lowest-common-ancestor-of-a-binary-tree |
Python |
📝 |
Medium |
| 237 |
删除链表中的节点 delete-node-in-a-linked-list |
Python |
📝 |
Medium |
| 238 |
除自身以外数组的乘积 product-of-array-except-self |
Python |
📝 |
Medium |
| 240 |
搜索二维矩阵 II search-a-2d-matrix-ii |
Python |
📝 |
Medium |
| 242 |
有效的字母异位词 valid-anagram |
Python |
📝 |
Easy |
| 257 |
二叉树的所有路径 binary-tree-paths |
Python |
📝 |
Easy |
| 258 |
各位相加 add-digits |
Python |
📝 |
Easy |
| 260 |
只出现一次的数字 III single-number-iii |
Python |
📝 |
Medium |
| 263 |
丑数 ugly-number |
Python |
📝 |
Easy |
| 268 |
丢失的数字 missing-number |
Python |
📝 |
Easy |
| 274 |
H 指数 h-index |
Python |
📝 |
Medium |
| 275 |
H 指数 II h-index-ii |
Python |
📝 |
Medium |
| 278 |
第一个错误的版本 first-bad-version |
Python |
📝 |
Easy |
| 283 |
移动零 move-zeroes |
Python |
📝 |
Easy |
| 287 |
寻找重复数 find-the-duplicate-number |
Python |
📝 |
Medium |
| 289 |
生命游戏 game-of-life |
Python |
📝 |
Medium |
| 290 |
单词规律 word-pattern |
Python |
📝 |
Easy |
| 292 |
Nim 游戏 nim-game |
Python |
📝 |
Easy |
| 297 |
二叉树的序列化与反序列化 serialize-and-deserialize-binary-tree |
Python |
📝 |
Hard |
| 300 |
最长递增子序列 longest-increasing-subsequence |
Python |
📝 |
Medium |
| 303 |
区域和检索 - 数组不可变 range-sum-query-immutable |
Python |
📝 |
Easy |
| 315 |
计算右侧小于当前元素的个数 count-of-smaller-numbers-after-self |
Python |
📝 |
Hard |
| 322 |
零钱兑换 coin-change |
Python |
📝 |
Medium |
| 326 |
3 的幂 power-of-three |
Python |
📝 |
Easy |
| 328 |
奇偶链表 odd-even-linked-list |
Python |
📝 |
Medium |
| 338 |
比特位计数 counting-bits |
Python |
📝 |
Easy |
| 341 |
扁平化嵌套列表迭代器 flatten-nested-list-iterator |
Python |
📝 |
Medium |
| 342 |
4的幂 power-of-four |
Python |
📝 |
Easy |
| 344 |
反转字符串 reverse-string |
Python |
📝 |
Easy |
| 345 |
反转字符串中的元音字母 reverse-vowels-of-a-string |
Python |
📝 |
Easy |
| 349 |
两个数组的交集 intersection-of-two-arrays |
Python |
📝 |
Easy |
| 350 |
两个数组的交集 II intersection-of-two-arrays-ii |
Python |
📝 |
Easy |
| 352 |
将数据流变为多个不相交区间 data-stream-as-disjoint-intervals |
Python |
📝 |
Hard |
| 354 |
俄罗斯套娃信封问题 russian-doll-envelopes |
Python |
📝 |
Hard |
| 367 |
有效的完全平方数 valid-perfect-square |
Python |
📝 |
Easy |
| 371 |
两整数之和 sum-of-two-integers |
Python |
📝 |
Medium |
| 374 |
猜数字大小 guess-number-higher-or-lower |
Python |
📝 |
Easy |
| 378 |
有序矩阵中第 K 小的元素 kth-smallest-element-in-a-sorted-matrix |
Python |
📝 |
Medium |
| 383 |
赎金信 ransom-note |
Python |
📝 |
Easy |
| 387 |
字符串中的第一个唯一字符 first-unique-character-in-a-string |
Python |
📝 |
Easy |
| 389 |
找不同 find-the-difference |
Python |
📝 |
Easy |
| 400 |
第 N 位数字 nth-digit |
Python |
📝 |
Medium |
| 401 |
二进制手表 binary-watch |
Python |
📝 |
Easy |
| 404 |
左叶子之和 sum-of-left-leaves |
Python |
📝 |
Easy |
| 405 |
数字转换为十六进制数 convert-a-number-to-hexadecimal |
Python |
📝 |
Easy |
| 406 |
根据身高重建队列 queue-reconstruction-by-height |
Python |
📝 |
Medium |
| 409 |
最长回文串 longest-palindrome |
Python |
📝 |
Easy |
| 412 |
Fizz Buzz fizz-buzz |
Python |
📝 |
Easy |
| 414 |
第三大的数 third-maximum-number |
Python |
📝 |
Easy |
| 415 |
字符串相加 add-strings |
Python |
📝 |
Easy |
| 416 |
分割等和子集 partition-equal-subset-sum |
Python |
📝 |
Medium |
| 434 |
字符串中的单词数 number-of-segments-in-a-string |
Python |
📝 |
Easy |
| 437 |
路径总和 III path-sum-iii |
Python |
📝 |
Medium |
| 438 |
找到字符串中所有字母异位词 find-all-anagrams-in-a-string |
Python |
📝 |
Medium |
| 440 |
字典序的第K小数字 k-th-smallest-in-lexicographical-order |
Python |
📝 |
Hard |
| 441 |
排列硬币 arranging-coins |
Python |
📝 |
Easy |
| 443 |
压缩字符串 string-compression |
Python |
📝 |
Medium |
| 445 |
两数相加 II add-two-numbers-ii |
Python |
📝 |
Medium |
| 447 |
回旋镖的数量 number-of-boomerangs |
Python |
📝 |
Medium |
| 448 |
找到所有数组中消失的数字 find-all-numbers-disappeared-in-an-array |
Python |
📝 |
Easy |
| 450 |
删除二叉搜索树中的节点 delete-node-in-a-bst |
Python |
📝 |
Medium |
| 453 |
最小操作次数使数组元素相等 minimum-moves-to-equal-array-elements |
Python |
📝 |
Medium |
| 455 |
分发饼干 assign-cookies |
Python |
📝 |
Easy |
| 459 |
重复的子字符串 repeated-substring-pattern |
Python |
📝 |
Easy |
| 461 |
汉明距离 hamming-distance |
Python |
📝 |
Easy |
| 463 |
岛屿的周长 island-perimeter |
Python |
📝 |
Easy |
| 475 |
供暖器 heaters |
Python |
📝 |
Medium |
| 476 |
数字的补数 number-complement |
Python |
📝 |
Easy |
| 482 |
密钥格式化 license-key-formatting |
Python |
📝 |
Easy |
| 485 |
最大连续 1 的个数 max-consecutive-ones |
Python |
📝 |
Easy |
| 492 |
构造矩形 construct-the-rectangle |
Python |
📝 |
Easy |
| 494 |
目标和 target-sum |
Python |
📝 |
Medium |
| 496 |
下一个更大元素 I next-greater-element-i |
Python |
📝 |
Easy |
| 500 |
键盘行 keyboard-row |
Python |
📝 |
Easy |
| 504 |
七进制数 base-7 |
Python |
📝 |
Easy |
| 506 |
相对名次 relative-ranks |
Python |
📝 |
Easy |
| 507 |
完美数 perfect-number |
Python |
📝 |
Easy |
| 516 |
最长回文子序列 longest-palindromic-subsequence |
Python |
📝 |
Medium |
| 518 |
零钱兑换 II coin-change-ii |
Python |
📝 |
Medium |
| 520 |
检测大写字母 detect-capital |
Python |
📝 |
Easy |
| 521 |
最长特殊序列 Ⅰ longest-uncommon-subsequence-i |
Python |
📝 |
Easy |
| 530 |
二叉搜索树的最小绝对差 minimum-absolute-difference-in-bst |
Python |
📝 |
Easy |
| 532 |
数组中的 k-diff 数对 k-diff-pairs-in-an-array |
Python |
📝 |
Medium |
| 535 |
TinyURL 的加密与解密 encode-and-decode-tinyurl |
Python |
📝 |
Medium |
| 538 |
把二叉搜索树转换为累加树 convert-bst-to-greater-tree |
Python |
📝 |
Medium |
| 541 |
反转字符串 II reverse-string-ii |
Python |
📝 |
Easy |
| 543 |
二叉树的直径 diameter-of-binary-tree |
Python |
📝 |
Easy |
| 551 |
学生出勤记录 I student-attendance-record-i |
Python |
📝 |
Easy |
| 557 |
反转字符串中的单词 III reverse-words-in-a-string-iii |
Python |
📝 |
Easy |
| 561 |
数组拆分 array-partition |
Python |
📝 |
Easy |
| 566 |
重塑矩阵 reshape-the-matrix |
Python |
📝 |
Easy |
| 575 |
分糖果 distribute-candies |
Python |
📝 |
Easy |
| 581 |
最短无序连续子数组 shortest-unsorted-continuous-subarray |
Python |
📝 |
Medium |
| 594 |
最长和谐子序列 longest-harmonious-subsequence |
Python |
📝 |
Easy |
| 598 |
范围求和 II range-addition-ii |
Python |
📝 |
Easy |
| 599 |
两个列表的最小索引总和 minimum-index-sum-of-two-lists |
Python |
📝 |
Easy |
| 605 |
种花问题 can-place-flowers |
Python |
📝 |
Easy |
| 606 |
根据二叉树创建字符串 construct-string-from-binary-tree |
Python |
📝 |
Easy |
| 617 |
合并二叉树 merge-two-binary-trees |
Python |
📝 |
Easy |
| 628 |
三个数的最大乘积 maximum-product-of-three-numbers |
Python |
📝 |
Easy |
| 633 |
平方数之和 sum-of-square-numbers |
Python |
📝 |
Medium |
| 637 |
二叉树的层平均值 average-of-levels-in-binary-tree |
Python |
📝 |
Easy |
| 643 |
子数组最大平均数 I maximum-average-subarray-i |
Python |
📝 |
Easy |
| 645 |
错误的集合 set-mismatch |
Python |
📝 |
Easy |
| 652 |
寻找重复的子树 find-duplicate-subtrees |
Python |
📝 |
Medium |
| 653 |
两数之和 IV - 输入二叉搜索树 two-sum-iv-input-is-a-bst |
Python |
📝 |
Easy |
| 654 |
最大二叉树 maximum-binary-tree |
Python |
📝 |
Medium |
| 657 |
机器人能否返回原点 robot-return-to-origin |
Python |
📝 |
Easy |
| 661 |
图片平滑器 image-smoother |
Python |
📝 |
Easy |
| 665 |
非递减数列 non-decreasing-array |
Python |
📝 |
Medium |
| 669 |
修剪二叉搜索树 trim-a-binary-search-tree |
Python |
📝 |
Medium |
| 674 |
最长连续递增序列 longest-continuous-increasing-subsequence |
Python |
📝 |
Easy |
| 680 |
验证回文串 II valid-palindrome-ii |
Python |
📝 |
Easy |
| 682 |
棒球比赛 baseball-game |
Python |
📝 |
Easy |
| 686 |
重复叠加字符串匹配 repeated-string-match |
Python |
📝 |
Medium |
| 687 |
最长同值路径 longest-univalue-path |
Python |
📝 |
Medium |
| 690 |
员工的重要性 employee-importance |
Python |
📝 |
Medium |
| 693 |
交替位二进制数 binary-number-with-alternating-bits |
Python |
📝 |
Easy |
| 696 |
计数二进制子串 count-binary-substrings |
Python |
📝 |
Easy |
| 697 |
数组的度 degree-of-an-array |
Python |
📝 |
Easy |
| 717 |
1 比特与 2 比特字符 1-bit-and-2-bit-characters |
Python |
📝 |
Easy |
| 720 |
词典中最长的单词 longest-word-in-dictionary |
Python |
📝 |
Medium |
| 724 |
寻找数组的中心下标 find-pivot-index |
Python |
📝 |
Easy |
| 725 |
分隔链表 split-linked-list-in-parts |
Python |
📝 |
Medium |
| 728 |
自除数 self-dividing-numbers |
Python |
📝 |
Easy |
| 742 |
转换成小写字母 to-lower-case |
Python |
📝 |
Easy |
| 745 |
寻找比目标字母大的最小字母 find-smallest-letter-greater-than-target |
Python |
📝 |
Easy |
| 747 |
使用最小花费爬楼梯 min-cost-climbing-stairs |
Python |
📝 |
Easy |
| 748 |
至少是其他数字两倍的最大数 largest-number-at-least-twice-of-others |
Python |
📝 |
Easy |
| 749 |
最短补全词 shortest-completing-word |
Python |
📝 |
Easy |
| 754 |
破解保险箱 cracking-the-safe |
Python |
📝 |
Hard |
| 755 |
到达终点数字 reach-a-number |
Python |
📝 |
Medium |
| 764 |
N 叉树的层序遍历 n-ary-tree-level-order-traversal |
Python |
📝 |
Medium |
| 767 |
二进制表示中质数个计算置位 prime-number-of-set-bits-in-binary-representation |
Python |
📝 |
Easy |
| 774 |
N 叉树的最大深度 maximum-depth-of-n-ary-tree |
Python |
📝 |
Easy |
| 775 |
N 叉树的前序遍历 n-ary-tree-preorder-traversal |
Python |
📝 |
Easy |
| 776 |
N 叉树的后序遍历 n-ary-tree-postorder-traversal |
Python |
📝 |
Easy |
| 777 |
托普利茨矩阵 toeplitz-matrix |
Python |
📝 |
Easy |
| 782 |
宝石与石头 jewels-and-stones |
Python |
📝 |
Easy |
| 783 |
二叉搜索树中的搜索 search-in-a-binary-search-tree |
Python |
📝 |
Easy |
| 784 |
二叉搜索树中的插入操作 insert-into-a-binary-search-tree |
Python |
📝 |
Medium |
| 789 |
数据流中的第 K 大元素 kth-largest-element-in-a-stream |
Python |
📝 |
Easy |
| 792 |
二分查找 binary-search |
Python |
📝 |
Easy |
| 799 |
二叉搜索树节点最小距离 minimum-distance-between-bst-nodes |
Python |
📝 |
Easy |
| 800 |
字母大小写全排列 letter-case-permutation |
Python |
📝 |
Medium |
| 804 |
旋转数字 rotated-digits |
Python |
📝 |
Medium |
| 812 |
旋转字符串 rotate-string |
Python |
📝 |
Easy |
| 816 |
设计哈希集合 design-hashset |
Python |
📝 |
Easy |
| 817 |
设计哈希映射 design-hashmap |
Python |
📝 |
Easy |
| 822 |
唯一摩尔斯密码词 unique-morse-code-words |
Python |
📝 |
Easy |
| 824 |
写字符串需要的行数 number-of-lines-to-write-string |
Python |
📝 |
Easy |
| 825 |
保持城市天际线 max-increase-to-keep-city-skyline |
Python |
📝 |
Medium |
| 829 |
子域名访问计数 subdomain-visit-count |
Python |
📝 |
Medium |
| 830 |
最大三角形面积 largest-triangle-area |
Python |
📝 |
Easy |
| 837 |
最常见的单词 most-common-word |
Python |
📝 |
Easy |
| 838 |
设计链表 design-linked-list |
Python |
📝 |
Medium |
| 841 |
字符的最短距离 shortest-distance-to-a-character |
Python |
📝 |
Easy |
| 851 |
山羊拉丁文 goat-latin |
Python |
📝 |
Easy |
| 857 |
较大分组的位置 positions-of-large-groups |
Python |
📝 |
Easy |
| 861 |
翻转图像 flipping-an-image |
Python |
📝 |
Easy |
| 866 |
矩形重叠 rectangle-overlap |
Python |
📝 |
Easy |
| 870 |
矩阵中的幻方 magic-squares-in-grid |
Python |
📝 |
Medium |
| 874 |
比较含退格的字符串 backspace-string-compare |
Python |
📝 |
Easy |
| 879 |
到最近的人的最大距离 maximize-distance-to-closest-person |
Python |
📝 |
Medium |
| 882 |
山脉数组的峰顶索引 peak-index-in-a-mountain-array |
Python |
📝 |
Medium |
| 889 |
亲密字符串 buddy-strings |
Python |
📝 |
Easy |
| 890 |
柠檬水找零 lemonade-change |
Python |
📝 |
Easy |
| 898 |
转置矩阵 transpose-matrix |
Python |
📝 |
Easy |
| 899 |
二进制间距 binary-gap |
Python |
📝 |
Easy |
| 903 |
用 Rand7() 实现 Rand10() implement-rand10-using-rand7 |
Python |
📝 |
Medium |
| 904 |
叶子相似的树 leaf-similar-trees |
Python |
📝 |
Easy |
| 906 |
模拟行走机器人 walking-robot-simulation |
Python |
📝 |
Medium |
| 908 |
链表的中间结点 middle-of-the-linked-list |
Python |
📝 |
Easy |
| 909 |
石子游戏 stone-game |
Python |
📝 |
Medium |
| 919 |
三维形体投影面积 projection-area-of-3d-shapes |
Python |
📝 |
Easy |
| 920 |
两句话中的不常见单词 uncommon-words-from-two-sentences |
Python |
📝 |
Easy |
| 924 |
公平的糖果交换 fair-candy-swap |
Python |
📝 |
Easy |
| 925 |
根据前序和后序遍历构造二叉树 construct-binary-tree-from-preorder-and-postorder-traversal |
Python |
📝 |
Medium |
| 928 |
三维形体的表面积 surface-area-of-3d-shapes |
Python |
📝 |
Easy |
| 929 |
特殊等价字符串组 groups-of-special-equivalent-strings |
Python |
📝 |
Medium |
| 932 |
单调数列 monotonic-array |
Python |
📝 |
Easy |
| 933 |
递增顺序搜索树 increasing-order-search-tree |
Python |
📝 |
Easy |
| 941 |
按奇偶排序数组 sort-array-by-parity |
Python |
📝 |
Easy |
| 944 |
最小差值 I smallest-range-i |
Python |
📝 |
Easy |
| 950 |
卡牌分组 x-of-a-kind-in-a-deck-of-cards |
Python |
📝 |
Easy |
| 953 |
仅仅反转字母 reverse-only-letters |
Python |
📝 |
Easy |
| 958 |
按奇偶排序数组 II sort-array-by-parity-ii |
Python |
📝 |
Easy |
| 961 |
长按键入 long-pressed-name |
Python |
📝 |
Easy |
| 965 |
独特的电子邮件地址 unique-email-addresses |
Python |
📝 |
Easy |
| 967 |
下降路径最小和 minimum-falling-path-sum |
Python |
📝 |
Medium |
| 969 |
最近的请求次数 number-of-recent-calls |
Python |
📝 |
Easy |
| 974 |
重新排列日志文件 reorder-data-in-log-files |
Python |
📝 |
Medium |
| 975 |
二叉搜索树的范围和 range-sum-of-bst |
Python |
📝 |
Easy |
| 978 |
有效的山脉数组 valid-mountain-array |
Python |
📝 |
Easy |
| 979 |
增减字符串匹配 di-string-match |
Python |
📝 |
Easy |
| 981 |
删列造序 delete-columns-to-make-sorted |
Python |
📝 |
Easy |
| 986 |
给定数字能组成的最大时间 largest-time-for-given-digits |
Python |
📝 |
Medium |
| 987 |
按递增顺序显示卡牌 reveal-cards-in-increasing-order |
Python |
📝 |
Medium |
| 990 |
验证外星语词典 verifying-an-alien-dictionary |
Python |
📝 |
Easy |
| 1001 |
在长度 2N 的数组中找出重复 N 次的元素 n-repeated-element-in-size-2n-array |
Python |
📝 |
Easy |
| 1005 |
单值二叉树 univalued-binary-tree |
Python |
📝 |
Easy |
| 1010 |
强整数 powerful-integers |
Python |
📝 |
Medium |
| 1013 |
斐波那契数 fibonacci-number |
Python |
📝 |
Easy |
| 1018 |
三角形的最大周长 largest-perimeter-triangle |
Python |
📝 |
Easy |
| 1019 |
有序数组的平方 squares-of-a-sorted-array |
Python |
📝 |
Easy |
| 1027 |
查询后的偶数和 sum-of-even-numbers-after-queries |
Python |
📝 |
Medium |
| 1031 |
数组形式的整数加法 add-to-array-form-of-integer |
Python |
📝 |
Easy |
| 1035 |
二叉树的堂兄弟节点 cousins-in-binary-tree |
Python |
📝 |
Easy |
| 1036 |
腐烂的橘子 rotting-oranges |
Python |
📝 |
Medium |
| 1039 |
找到小镇的法官 find-the-town-judge |
Python |
📝 |
Easy |
| 1041 |
可以被一步捕获的棋子数 available-captures-for-rook |
Python |
📝 |
Easy |
| 1044 |
查找共用字符 find-common-characters |
Python |
📝 |
Easy |
| 1047 |
K 次取反后最大化的数组和 maximize-sum-of-array-after-k-negations |
Python |
📝 |
Easy |
| 1054 |
十进制整数的反码 complement-of-base-10-integer |
Python |
📝 |
Easy |
| 1055 |
总持续时间可被 60 整除的歌曲 pairs-of-songs-with-total-durations-divisible-by-60 |
Python |
📝 |
Medium |
| 1062 |
将数组分成和相等的三个部分 partition-array-into-three-parts-with-equal-sum |
Python |
📝 |
Easy |
| 1071 |
可被 5 整除的二进制前缀 binary-prefix-divisible-by-5 |
Python |
📝 |
Easy |
| 1078 |
删除最外层的括号 remove-outermost-parentheses |
Python |
📝 |
Easy |
| 1086 |
除数博弈 divisor-game |
Python |
📝 |
Easy |
| 1094 |
距离顺序排列矩阵单元格 matrix-cells-in-distance-order |
Python |
📝 |
Easy |
| 1095 |
两地调度 two-city-scheduling |
Python |
📝 |
Medium |
| 1114 |
从二叉搜索树到更大和树 binary-search-tree-to-greater-sum-tree |
Python |
📝 |
Medium |
| 1227 |
等价多米诺骨牌对的数量 number-of-equivalent-domino-pairs |
Python |
📝 |
Easy |
| 1236 |
第 N 个泰波那契数 n-th-tribonacci-number |
Python |
📝 |
Easy |
| 1238 |
字母板上的路径 alphabet-board-path |
Python |
📝 |
Medium |
| 1250 |
最长公共子序列 longest-common-subsequence |
Python |
📝 |
Medium |
| 1353 |
移除字母异位词后的结果数组 find-resultant-array-after-removing-anagrams |
Python |
📝 |
Easy |
| 2355 |
不含特殊楼层的最大连续楼层数 maximum-consecutive-floors-without-special-floors |
Python |
📝 |
Medium |
| 2356 |
按位与结果大于零的最长组合 largest-combination-with-bitwise-and-greater-than-zero |
Python |
📝 |
Medium |