| 830 較大分組的位置 |
Positions of Large Groups |
↗ |
Easy |
| 766 託普利茨矩陣 |
Toepliz Matrix |
↗ |
Easy |
| 747 至少是其餘數字兩倍的最大數 |
Largest Number At Least Twice of Others |
↗ |
Easy |
| 746 使用最小花費爬樓梯 |
Min Cost Climbing Stairs |
↗ |
Easy |
| 559 N 叉樹的最大深度 |
Maximum Depth of N Ary Tree |
↗ |
Easy |
| 687 最長同值路徑 |
Longest Univalue Path |
↗ |
Easy |
| 669 修剪二叉搜索樹 |
Trim A Binary Search Tree |
↗ |
Easy |
| 653 兩數之和 IV - 輸入 BST |
Two Sum IV Input Is A BST |
↗ |
Easy |
| 637 二叉樹的層平均值 |
Average of Level Values |
↗ |
Easy |
| 617 合併二叉樹 |
Merge Two Binary Trees |
↗ |
Easy |
| 606 根據二叉樹建立字符串 |
Construct String From Binary Tree |
↗ |
Easy |
| 724 尋找數組的中心索引 |
Find Pivot Index |
↗ |
Easy |
| 717 1 比特與 2 比特字符 |
1 Bit and 2 Bit Characters |
↗ |
Easy |
| 697 數組的度 |
Degree of An Array |
↗ |
Easy |
| 674 最長連續遞增序列 |
Longest Continuous Increasing Subsequence |
↗ |
Easy |
| 665 非遞減數列 |
Non Decreasing Array |
↗ |
Easy |
| 661 圖片平滑器 |
Image Smoother |
↗ |
Easy |
| 643 子數組最大平均數 I |
Maximum Average Subarray I |
↗ |
Easy |
| 628 三個數的最大乘積 |
Maximum Product of Three Numbers |
↗ |
Easy |
| 605 種花問題 |
Can Place Flowers |
↗ |
Easy |
| 581 最短無序連續子數組 |
Shortest Unsorted Continuous Subarray |
↗ |
Easy |
| 566 重塑矩陣 |
Reshape the Matrix |
[↗]() |
Easy |
| 561 數組拆分 I |
Array Partition I |
↗ |
Easy |
| 532 數組中的 K-diff 數對 |
K Diff Pairs in An Array |
↗ |
Easy |
| 485 最大連續 1 的個數 |
Max Consecutive Ones |
↗ |
Easy |
| 572 另外一棵樹的子樹 |
Subtree of Another Tree |
↗ |
Easy |
| 563 二叉樹的坡度 |
Bianry Tree Tilt |
↗ |
Easy |
| 543 二叉樹的直徑 |
Diameter of Binary Tree |
↗ |
Easy |
| 538 把二叉搜索樹轉換爲累加樹 |
Converse BST to Greater Tree |
↗ |
Easy |
| 501 二叉搜索樹中的衆數 |
Find Mode in Binary Search Tree |
↗ |
Easy |
| 984 不含 AAA 或 BBB 的字符串 |
String Without AAA or BBB |
↗ |
Easy |
| 944 刪列造序 |
Delete Columns to Make Sorted |
↗ |
Easy |
| 874 模擬機器人行走 |
Walking Robot Simulation |
↗ |
Easy |
| 860 檸檬水找零 |
Lemonade Change |
↗ |
Easy |
| 463 島嶼的周長 |
Island Perimeter |
↗ |
Easy |
| 461 漢明距離 |
Hamming Distance |
↗ |
Easy |
| 459 重複的子字符串 |
Repeated Substring Pattern |
↗ |
Easy |
| 458 可憐的小豬 |
Poor Pigs |
↗ |
Easy |
| 455 分發餅乾 |
Assign Cookies |
↗ |
Easy |
| 453 最小移動次數使數組元素相等 |
Minimum Moves to Equal Array Elements |
↗ |
Easy |
| 448 找到數組中消失的全部數字 |
Find All Numbers Disappeared in An Array |
↗ |
Easy |
| 447 迴旋鏢的數量 |
Number of Boomerangs |
↗ |
Easy |
| 443 壓縮字符串 |
String Compression |
↗ |
Easy |
| 441 排列硬幣 |
Arranging Coins |
↗ |
Easy |
| 438 找到字符串中全部字母異或詞 |
Find All Anagrams in A String |
↗ |
Easy |
| 437 路徑總和 III |
Path Sum III |
↗ |
Easy |
| 434 字符串中的單詞數 |
Number of Segments in A String |
↗ |
Easy |
| 429 N 叉樹的層序遍歷 |
N Ary Tree Level Order Traversal |
↗ |
Easy |
| 427 創建四叉樹 |
Construct Quad Tree |
↗ |
Easy |
| 415 字符串相加 |
Add Strings |
↗ |
Easy |
| 414 第三大的數 |
Third Maximum Num |
↗ |
Easy |
| 412 Fizz Buzz |
Fizz Buzz |
↗ |
Easy |
| 409 最長迴文串 |
Longest Palindrome |
↗ |
Easy |
| 405 數字轉換爲十六進制數 |
Convert A Number to Hexadecimal |
↗ |
Easy |
| 404 左葉子之和 |
Sum of Left Leaves |
↗ |
Easy |
| 401 二進制手錶 |
Binary Watch |
↗ |
Easy |
| 400 第 N 個數字 |
Nth Digit |
↗ |
Easy |
| 389 找不一樣 |
Find The Difference |
↗ |
Easy |
| 387 字符串中的第一個惟一字符 |
First Unique Character in A String |
↗ |
Easy |
| 383 贖金信 |
Ronsom Note |
↗ |
Easy |
| 374 猜數字大小 |
Guess Number Higher or Lower |
↗ |
Easy |
| 371 兩整數之和 |
Sum of Two Integers |
↗ |
Easy |
| 367 有效的徹底平方數 |
Valid Perfect Square |
↗ |
Easy |
| 350 兩個數組的交集 II |
Intersection of Two Arrays II |
↗ |
Easy |
| 349 兩個數組的交集 |
Intersection of Two Arrays |
↗ |
Easy |
| 345 反轉字符串中的元音字母 |
Reverse Vowels of A String |
↗ |
Easy |
| 344 反轉字符串 |
Reverse String |
↗ |
Easy |
| 342 4 的冪 |
Power of Four |
↗ |
Easy |
| 326 3 的冪 |
Power of Three |
↗ |
Easy |
| 303 區域和檢索 - 數組不可變 |
Range Sum Query Immutable |
↗ |
Easy |
| 292 Nim 遊戲 |
Nim Game |
↗ |
Easy |
| 290 單詞模式 |
Word Pattern |
↗ |
Easy |
| 283 移動零 |
Move Zeroes |
↗ |
Easy |
| 278 第一個錯誤的版本 |
First Bad Version |
↗ |
Easy |
| 268 缺失數字 |
Missing Number |
↗ |
Easy |
| 263 醜數 |
Ugly Number |
↗ |
Easy |
| 258 各位相加 |
Add Digits |
↗ |
Easy |
| 257 二叉樹的全部路徑 |
Binary Tree Paths |
↗ |
Easy |
| 242 有效的字母異或詞 |
Valid Anagram |
↗ |
Easy |
| 237 刪除鏈表中的節點 |
Delete Node in A Linked List |
↗ |
Easy |
| 235 二叉搜索樹的最近公共祖先 |
Lowest Common Ancester of A Binary Search Tree |
↗ |
Easy |
| 234 迴文鏈表 |
Palindrome Linked List |
↗ |
Easy |
| 232 用棧實現隊列 |
Implement Queue Using Stacks |
↗ |
Easy |
| 231 2 的冪 |
Power of Two |
↗ |
Easy |
| 226 翻轉二叉樹 |
Invert Binary Tree |
↗ |
Easy |
| 225 用隊列實現棧 |
Implement Stack Using Queues |
↗ |
Easy |
| 219 存在重複元素 II |
Contains Duplicate II |
↗ |
Easy |
| 217 存在重複元素 |
Contains Duplicate |
↗ |
Easy |
| 206 反轉鏈表 |
Reverse Linked List |
↗ |
Easy |
| 205 同構字符串 |
Isomorphic Strings |
↗ |
Easy |
| 204 計數質數 |
Count Primes |
↗ |
Easy |
| 203 移出鏈表元素 |
Remove Linked List Elements |
↗ |
Easy |
| 202 快樂數 |
Happy Number |
↗ |
Easy |
| 198 打家劫舍 |
House Robber |
↗ |
Easy |
| 191 位 1 的個數 |
Number of 1 Bits |
↗ |
Easy |
| 190 顛倒二進制位 |
Reverse Bits |
↗ |
Easy |
| 189 旋轉數組 |
Rotate Array |
↗ |
Easy |
| 172 階乘後的零 |
Factorial Trailing Zeors |
↗ |
Easy |
| 171 Excel 表列序號 |
Excel Sheet Column Number |
↗ |
Easy |
| 169 求衆數 |
Majority Element |
↗ |
Easy |
| 168 Excel 表列名稱 |
Excel Sheet Column Title |
↗ |
Easy |
| 167 兩數之和 II - 輸入有序數組 |
Two Sum II Input Array Is Sorted |
↗ |
Easy |
| 160 相交鏈表 |
Intersection of Two Linked List |
↗ |
Easy |
| 155 最小棧 |
Min Stack |
↗ |
Easy |
| 141 環形鏈表 |
Linked List Code |
↗ |
Easy |
| 136 只出現一次的數字 |
Single Number |
↗ |
Easy |
| 125 驗證迴文字符串 |
Valid Palindrome |
↗ |
Easy |
| 122 買賣股票的最佳時機 II |
Best Time to Buy and Sell Stock II |
↗ |
Easy |
| 121 買賣股票的最佳時機 |
Best Time to Buy and Sell Stock |
↗ |
Easy |
| 119 楊輝三角 II |
Pascals Triangle II |
↗ |
Easy |
| 118 楊輝三角 |
Pascals Triangle |
↗ |
Easy |
| 112 路徑總和 |
Path Sum |
↗ |
Easy |
| 111 二叉樹的最小深度 |
Minimum Depth of Binary Tree |
↗ |
Easy |
| 110 平衡二叉樹 |
Balanced Binary Tree |
↗ |
Easy |
| 108 將有序數組轉換爲二叉搜索樹 |
Convert Sorted Array to Binary Search Tree |
↗ |
Easy |
| 107 二叉樹的層次遍歷 II |
Binary Tree Level Order Traversal II |
↗ |
Easy |
| 104 二叉樹的最大深度 |
Maximum Depth of Binary Tree |
↗ |
Easy |
| 101 對稱二叉樹 |
Symmetric Tree |
↗ |
Easy |
| 100 相同的樹 |
Same Tree |
↗ |
Easy |
| 088 合併兩個有序數組 |
Merge Sorted Array |
↗ |
Easy |
| 083 刪除排序鏈表中的重複元素 |
Remove Duplicates from Sorted List |
↗ |
Easy |
| 070 爬樓梯 |
Climbing Stairs |
↗ |
Easy |
| 069 x 的平方根 |
Sqrt X |
↗ |
Easy |
| 068 二進制求和 |
Add Binary |
↗ |
Easy |
| 066 加一 |
Plus One |
↗ |
Easy |
| 058 最後一個單詞的長度 |
Length of Last Word |
↗ |
Easy |
| 053 最大子序和 |
Maximum Subarray |
↗ |
Easy |
| 038 報數 |
Count and say |
↗ |
Easy |
| 035 搜索插入位置 |
Search Insert Position |
↗ |
Easy |
| 028 實現 strStr() |
Implement strStr() |
↗ |
Easy |
| 027 移除元素 |
Remove Element |
↗ |
Easy |
| 026 刪除排序數組中的重複項 |
Romove Duplicates From Sorted Array |
↗ |
Easy |
| 021 合併兩個有序鏈表 |
Merge Two Sorted Lists |
↗ |
Easy |
| 020 有效的括號 |
Valid Parentheses |
↗ |
Easy |
| 014 最長公共前綴 |
Longest Common Prefix |
↗ |
Easy |
| 013 羅馬數字轉整數 |
Roman to Integer |
↗ |
Easy |
| 009 迴文數 |
Palindrome Number |
↗ |
Easy |
| 007 反轉整數 |
Reverse Integer |
↗ |
Easy |
| 001 兩數之和 |
Two Sum |
↗ |
Easy |
