算法学习(learning-algorithms) 及 LeetCode 的题解（Go 版本）
如果你正在算法之门外彷徨，如果你正在发愁不知道该怎么进行算法学习，或许本项目能够适合你。
本项目是我准备的算法学习历程，包括我对算法书籍的整理，算法实践（Go 实现），以及各种算法的理解，也还会有一些有关方面的经验总结。
希望有更多的人参与进来，咱们一起前行，一起精进。
Inspire by aQuaYi/LeetCode-in-Go, WindomZ/leetcode-graphql
可以生成 LeetCode 模板，还可以更新 README ，还可以添加待办任务等部分琐碎的工作。
- 在
.gitignore中，添加*.toml（避免用户名密码暴露） - 在
learning-algorithms目录下，添加文本文件config.toml。 - 把以下内容复制到
config.toml中。
Username="your leetcode username"
Password="your leetcode password"- 构建
go build或者
go install- 准备题目：
go run main.go prepare -number 146 -lang golang -dir practive/leetcode_golang
go run main.go prepare -number 146 -lang c++ -dir practive/leetcode_c++
go run main.go prepare -number 146 -lang java -dir practive/leetcode_java- 更新 README
go run main.go readme统计范围：能提交 Go 解答的免费算法题。
| Easy | Medium | Hard | Total | |
|---|---|---|---|---|
| Accepted | 4 | 1 | 2 | 7 |
| Total | 245 | 412 | 177 | 834 |
- macOS 10.14.3
- go version go1.12.3 darwin/amd64
- GoLand
| 题号 | 题目 | 通过率 | 难度 | 收藏 |
|---|---|---|---|---|
| 0001 | ✅Two Sum | 44% | Easy | |
| 0002 | ✅Add Two Numbers | 31% | Medium | |
| 0007 | ✅Reverse Integer | 25% | Easy | |
| 0009 | ✅Palindrome Number | 43% | Easy | |
| 0042 | ✅Trapping Rain Water | 43% | Hard | |
| 0125 | ✅Valid Palindrome | 31% | Easy | |
| 0146 | ✅LRU Cache | 25% | Hard |
| 题号 | 题目 | 通过率 | 难度 | 收藏 |
|---|---|---|---|---|
| 0001 | ✅Two Sum | 44% | Easy | |
| 0002 | ✅Add Two Numbers | 31% | Medium | |
| 0003 | * Longest Substring Without Repeating Characters | 28% | Medium | |
| 0004 | * Median of Two Sorted Arrays | 26% | Hard | |
| 0005 | * Longest Palindromic Substring | 27% | Medium | |
| 0006 | * ZigZag Conversion | 31% | Medium | |
| 0007 | ✅Reverse Integer | 25% | Easy | |
| 0008 | * String to Integer (atoi) | 14% | Medium | |
| 0009 | ✅Palindrome Number | 43% | Easy | |
| 0010 | * Regular Expression Matching | 25% | Hard | |
| 0011 | * Container With Most Water | 44% | Medium | |
| 0012 | * Integer to Roman | 50% | Medium | |
| 0013 | * Roman to Integer | 52% | Easy | |
| 0014 | * Longest Common Prefix | 33% | Easy | |
| 0015 | * 3Sum | 23% | Medium | |
| 0016 | * 3Sum Closest | 45% | Medium | |
| 0017 | * Letter Combinations of a Phone Number | 41% | Medium | |
| 0018 | * 4Sum | 30% | Medium | |
| 0019 | * Remove Nth Node From End of List | 34% | Medium | |
| 0020 | * Valid Parentheses | 36% | Easy | |
| 0021 | * Merge Two Sorted Lists | 47% | Easy | |
| 0022 | * Generate Parentheses | 54% | Medium | |
| 0023 | * Merge k Sorted Lists | 34% | Hard | |
| 0024 | * Swap Nodes in Pairs | 44% | Medium | |
| 0025 | * Reverse Nodes in k-Group | 36% | Hard | |
| 0026 | * Remove Duplicates from Sorted Array | 40% | Easy | |
| 0027 | * Remove Element | 44% | Easy | |
| 0028 | * Implement strStr() | 31% | Easy | |
| 0029 | * Divide Two Integers | 16% | Medium | |
| 0030 | * Substring with Concatenation of All Words | 23% | Hard | |
| 0031 | * Next Permutation | 30% | Medium | |
| 0032 | * Longest Valid Parentheses | 25% | Hard | |
| 0033 | * Search in Rotated Sorted Array | 32% | Medium | |
| 0034 | * Find First and Last Position of Element in Sorted Array | 33% | Medium | |
| 0035 | * Search Insert Position | 40% | Easy | |
| 0036 | * Valid Sudoku | 42% | Medium | |
| 0037 | * Sudoku Solver | 36% | Hard | |
| 0038 | * Count and Say | 40% | Easy | |
| 0039 | * Combination Sum | 48% | Medium | |
| 0040 | * Combination Sum II | 41% | Medium | |
| 0041 | * First Missing Positive | 28% | Hard | |
| 0042 | ✅Trapping Rain Water | 43% | Hard | |
| 0043 | * Multiply Strings | 30% | Medium | |
| 0044 | * Wildcard Matching | 22% | Hard | |
| 0045 | * Jump Game II | 27% | Hard | |
| 0046 | * Permutations | 54% | Medium | |
| 0047 | * Permutations II | 40% | Medium | |
| 0048 | * Rotate Image | 48% | Medium | |
| 0049 | * Group Anagrams | 46% | Medium | |
| 0050 | * Pow(x, n) | 27% | Medium | |
| 0051 | * N-Queens | 39% | Hard | |
| 0052 | * N-Queens II | 51% | Hard | |
| 0053 | * Maximum Subarray | 43% | Easy | |
| 0054 | * Spiral Matrix | 30% | Medium | |
| 0055 | * Jump Game | 31% | Medium | |
| 0056 | * Merge Intervals | 35% | Medium | |
| 0057 | * Insert Interval | 31% | Hard | |
| 0058 | * Length of Last Word | 32% | Easy | |
| 0059 | * Spiral Matrix II | 46% | Medium | |
| 0060 | * Permutation Sequence | 32% | Medium | |
| 0061 | * Rotate List | 27% | Medium | |
| 0062 | * Unique Paths | 47% | Medium | |
| 0063 | * Unique Paths II | 33% | Medium | |
| 0064 | * Minimum Path Sum | 46% | Medium | |
| 0065 | * Valid Number | 13% | Hard | |
| 0066 | * Plus One | 41% | Easy | |
| 0067 | * Add Binary | 38% | Easy | |
| 0068 | * Text Justification | 23% | Hard | |
| 0069 | * Sqrt(x) | 31% | Easy | |
| 0070 | * Climbing Stairs | 44% | Easy | |
| 0071 | * Simplify Path | 28% | Medium | |
| 0072 | * Edit Distance | 37% | Hard | |
| 0073 | * Set Matrix Zeroes | 39% | Medium | |
| 0074 | * Search a 2D Matrix | 34% | Medium | |
| 0075 | * Sort Colors | 42% | Medium | |
| 0076 | * Minimum Window Substring | 30% | Hard | |
| 0077 | * Combinations | 47% | Medium | |
| 0078 | * Subsets | 52% | Medium | |
| 0079 | * Word Search | 31% | Medium | |
| 0080 | * Remove Duplicates from Sorted Array II | 40% | Medium | |
| 0081 | * Search in Rotated Sorted Array II | 32% | Medium | |
| 0082 | * Remove Duplicates from Sorted List II | 32% | Medium | |
| 0083 | * Remove Duplicates from Sorted List | 42% | Easy | |
| 0084 | * Largest Rectangle in Histogram | 31% | Hard | |
| 0085 | * Maximal Rectangle | 33% | Hard | |
| 0086 | * Partition List | 37% | Medium | |
| 0087 | * Scramble String | 31% | Hard | |
| 0088 | * Merge Sorted Array | 35% | Easy | |
| 0089 | * Gray Code | 45% | Medium | |
| 0090 | * Subsets II | 42% | Medium | |
| 0091 | * Decode Ways | 22% | Medium | |
| 0092 | * Reverse Linked List II | 34% | Medium | |
| 0093 | * Restore IP Addresses | 31% | Medium | |
| 0094 | * Binary Tree Inorder Traversal | 56% | Medium | |
| 0095 | * Unique Binary Search Trees II | 35% | Medium | |
| 0096 | * Unique Binary Search Trees | 46% | Medium | |
| 0097 | * Interleaving String | 27% | Hard | |
| 0098 | * Validate Binary Search Tree | 25% | Medium | |
| 0099 | * Recover Binary Search Tree | 34% | Hard | |
| 0100 | * Same Tree | 49% | Easy | |
| 0101 | * Symmetric Tree | 43% | Easy | |
| 0102 | * Binary Tree Level Order Traversal | 48% | Medium | |
| 0103 | * Binary Tree Zigzag Level Order Traversal | 41% | Medium | |
| 0104 | * Maximum Depth of Binary Tree | 60% | Easy | |
| 0105 | * Construct Binary Tree from Preorder and Inorder Traversal | 40% | Medium | |
| 0106 | * Construct Binary Tree from Inorder and Postorder Traversal | 39% | Medium | |
| 0107 | * Binary Tree Level Order Traversal II | 46% | Easy | |
| 0108 | * Convert Sorted Array to Binary Search Tree | 50% | Easy | |
| 0109 | * Convert Sorted List to Binary Search Tree | 40% | Medium | |
| 0110 | * Balanced Binary Tree | 40% | Easy | |
| 0111 | * Minimum Depth of Binary Tree | 35% | Easy | |
| 0112 | * Path Sum | 37% | Easy | |
| 0113 | * Path Sum II | 40% | Medium | |
| 0114 | * Flatten Binary Tree to Linked List | 42% | Medium | |
| 0115 | * Distinct Subsequences | 34% | Hard | |
| 0118 | * Pascal's Triangle | 45% | Easy | |
| 0119 | * Pascal's Triangle II | 43% | Easy | |
| 0120 | * Triangle | 39% | Medium | |
| 0121 | * Best Time to Buy and Sell Stock | 47% | Easy | |
| 0122 | * Best Time to Buy and Sell Stock II | 51% | Easy | |
| 0123 | * Best Time to Buy and Sell Stock III | 33% | Hard | |
| 0124 | * Binary Tree Maximum Path Sum | 29% | Hard | |
| 0125 | ✅Valid Palindrome | 31% | Easy | |
| 0126 | * Word Ladder II | 17% | Hard | |
| 0127 | * Word Ladder | 23% | Medium | |
| 0128 | * Longest Consecutive Sequence | 41% | Hard | |
| 0129 | * Sum Root to Leaf Numbers | 42% | Medium | |
| 0130 | * Surrounded Regions | 22% | Medium | |
| 0131 | * Palindrome Partitioning | 40% | Medium | |
| 0132 | * Palindrome Partitioning II | 27% | Hard | |
| 0134 | * Gas Station | 33% | Medium | |
| 0135 | * Candy | 28% | Hard | |
| 0136 | * Single Number | 59% | Easy | |
| 0137 | * Single Number II | 45% | Medium | |
| 0139 | * Word Break | 35% | Medium | |
| 0140 | * Word Break II | 27% | Hard | |
| 0141 | * Linked List Cycle | 36% | Easy | |
| 0142 | * Linked List Cycle II | 31% | Medium | |
| 0143 | * Reorder List | 30% | Medium | |
| 0144 | * Binary Tree Preorder Traversal | 51% | Medium | |
| 0145 | * Binary Tree Postorder Traversal | 48% | Hard | |
| 0146 | ✅LRU Cache | 25% | Hard | |
| 0147 | * Insertion Sort List | 37% | Medium | |
| 0148 | * Sort List | 35% | Medium | |
| 0149 | * Max Points on a Line | 15% | Hard | |
| 0150 | * Evaluate Reverse Polish Notation | 32% | Medium | |
| 0152 | * Maximum Product Subarray | 29% | Medium | |
| 0153 | * Find Minimum in Rotated Sorted Array | 42% | Medium | |
| 0154 | * Find Minimum in Rotated Sorted Array II | 39% | Hard | |
| 0155 | * Min Stack | 36% | Easy | |
| 0160 | * Intersection of Two Linked Lists | 33% | Easy | |
| 0162 | * Find Peak Element | 41% | Medium | |
| 0164 | * Maximum Gap | 32% | Hard | |
| 0165 | * Compare Version Numbers | 23% | Medium | |
| 0166 | * Fraction to Recurring Decimal | 19% | Medium | |
| 0167 | * Two Sum II - Input array is sorted | 50% | Easy | |
| 0168 | * Excel Sheet Column Title | 28% | Easy | |
| 0169 | * Majority Element | 52% | Easy | |
| 0171 | * Excel Sheet Column Number | 51% | Easy | |
| 0172 | * Factorial Trailing Zeroes | 37% | Easy | |
| 0173 | * Binary Search Tree Iterator | 48% | Medium | |
| 0174 | * Dungeon Game | 27% | Hard | |
| 0179 | * Largest Number | 25% | Medium | |
| 0187 | * Repeated DNA Sequences | 35% | Medium | |
| 0188 | * Best Time to Buy and Sell Stock IV | 26% | Hard | |
| 0189 | * Rotate Array | 29% | Easy | |
| 0190 | * Reverse Bits | 31% | Easy | |
| 0191 | * Number of 1 Bits | 43% | Easy | |
| 0198 | * House Robber | 40% | Easy | |
| 0199 | * Binary Tree Right Side View | 47% | Medium | |
| 0200 | * Number of Islands | 41% | Medium | |
| 0201 | * Bitwise AND of Numbers Range | 35% | Medium | |
| 0202 | * Happy Number | 45% | Easy | |
| 0203 | * Remove Linked List Elements | 35% | Easy | |
| 0204 | * Count Primes | 28% | Easy | |
| 0205 | * Isomorphic Strings | 37% | Easy | |
| 0206 | * Reverse Linked List | 54% | Easy | |
| 0207 | * Course Schedule | 37% | Medium | |
| 0208 | * Implement Trie (Prefix Tree) | 38% | Medium | |
| 0209 | * Minimum Size Subarray Sum | 34% | Medium | |
| 0210 | * Course Schedule II | 34% | Medium | |
| 0211 | * Add and Search Word - Data structure design | 30% | Medium | |
| 0212 | * Word Search II | 28% | Hard | |
| 0213 | * House Robber II | 35% | Medium | |
| 0214 | * Shortest Palindrome | 27% | Hard | |
| 0215 | * Kth Largest Element in an Array | 47% | Medium | |
| 0216 | * Combination Sum III | 51% | Medium | |
| 0217 | * Contains Duplicate | 51% | Easy | |
| 0218 | * The Skyline Problem | 31% | Hard | |
| 0219 | * Contains Duplicate II | 35% | Easy | |
| 0220 | * Contains Duplicate III | 19% | Medium | |
| 0221 | * Maximal Square | 32% | Medium | |
| 0222 | * Count Complete Tree Nodes | 33% | Medium | |
| 0223 | * Rectangle Area | 35% | Medium | |
| 0224 | * Basic Calculator | 32% | Hard | |
| 0225 | * Implement Stack using Queues | 39% | Easy | |
| 0226 | * Invert Binary Tree | 58% | Easy | |
| 0227 | * Basic Calculator II | 33% | Medium | |
| 0228 | * Summary Ranges | 35% | Medium | |
| 0229 | * Majority Element II | 31% | Medium | |
| 0230 | * Kth Smallest Element in a BST | 51% | Medium | |
| 0231 | * Power of Two | 41% | Easy | |
| 0232 | * Implement Queue using Stacks | 43% | Easy | |
| 0233 | * Number of Digit One | 30% | Hard | |
| 0234 | * Palindrome Linked List | 35% | Easy | |
| 0235 | * Lowest Common Ancestor of a Binary Search Tree | 44% | Easy | |
| 0236 | * Lowest Common Ancestor of a Binary Tree | 37% | Medium | |
| 0237 | * Delete Node in a Linked List | 53% | Easy | |
| 0238 | * Product of Array Except Self | 54% | Medium | |
| 0239 | * Sliding Window Maximum | 38% | Hard | |
| 0240 | * Search a 2D Matrix II | 40% | Medium | |
| 0241 | * Different Ways to Add Parentheses | 49% | Medium | |
| 0242 | * Valid Anagram | 52% | Easy | |
| 0257 | * Binary Tree Paths | 45% | Easy | |
| 0258 | * Add Digits | 54% | Easy | |
| 0260 | * Single Number III | 56% | Medium | |
| 0263 | * Ugly Number | 40% | Easy | |
| 0264 | * Ugly Number II | 36% | Medium | |
| 0268 | * Missing Number | 48% | Easy | |
| 0273 | * Integer to English Words | 24% | Hard | |
| 0274 | * H-Index | 34% | Medium | |
| 0275 | * H-Index II | 35% | Medium | |
| 0279 | * Perfect Squares | 41% | Medium | |
| 0282 | * Expression Add Operators | 32% | Hard | |
| 0283 | * Move Zeroes | 54% | Easy | |
| 0287 | * Find the Duplicate Number | 49% | Medium | |
| 0289 | * Game of Life | 45% | Medium | |
| 0290 | * Word Pattern | 34% | Easy | |
| 0292 | * Nim Game | 55% | Easy | |
| 0295 | * Find Median from Data Stream | 36% | Hard | |
| 0299 | * Bulls and Cows | 39% | Medium | |
| 0300 | * Longest Increasing Subsequence | 40% | Medium | |
| 0301 | * Remove Invalid Parentheses | 39% | Hard | |
| 0303 | * Range Sum Query - Immutable | 37% | Easy | |
| 0304 | * Range Sum Query 2D - Immutable | 32% | Medium | |
| 0306 | * Additive Number | 28% | Medium | |
| 0307 | * Range Sum Query - Mutable | 28% | Medium | |
| 0309 | * Best Time to Buy and Sell Stock with Cooldown | 43% | Medium | |
| 0310 | * Minimum Height Trees | 30% | Medium | |
| 0312 | * Burst Balloons | 47% | Hard | |
| 0313 | * Super Ugly Number | 41% | Medium | |
| 0315 | * Count of Smaller Numbers After Self | 38% | Hard | |
| 0316 | * Remove Duplicate Letters | 32% | Hard | |
| 0318 | * Maximum Product of Word Lengths | 48% | Medium | |
| 0319 | * Bulb Switcher | 43% | Medium | |
| 0321 | * Create Maximum Number | 25% | Hard | |
| 0322 | * Coin Change | 30% | Medium | |
| 0324 | * Wiggle Sort II | 27% | Medium | |
| 0326 | * Power of Three | 41% | Easy | |
| 0327 | * Count of Range Sum | 32% | Hard | |
| 0328 | * Odd Even Linked List | 49% | Medium | |
| 0329 | * Longest Increasing Path in a Matrix | 39% | Hard | |
| 0330 | * Patching Array | 33% | Hard | |
| 0331 | * Verify Preorder Serialization of a Binary Tree | 38% | Medium | |
| 0332 | * Reconstruct Itinerary | 31% | Medium | |
| 0334 | * Increasing Triplet Subsequence | 39% | Medium | |
| 0335 | * Self Crossing | 26% | Hard | |
| 0336 | * Palindrome Pairs | 30% | Hard | |
| 0337 | * House Robber III | 47% | Medium | |
| 0338 | * Counting Bits | 64% | Medium | |
| 0342 | * Power of Four | 40% | Easy | |
| 0343 | * Integer Break | 47% | Medium | |
| 0344 | * Reverse String | 63% | Easy | |
| 0345 | * Reverse Vowels of a String | 41% | Easy | |
| 0347 | * Top K Frequent Elements | 54% | Medium | |
| 0349 | * Intersection of Two Arrays | 54% | Easy | |
| 0350 | * Intersection of Two Arrays II | 47% | Easy | |
| 0352 | * Data Stream as Disjoint Intervals | 43% | Hard | |
| 0354 | * Russian Doll Envelopes | 33% | Hard | |
| 0355 | * Design Twitter | 27% | Medium | |
| 0357 | * Count Numbers with Unique Digits | 46% | Medium | |
| 0363 | * Max Sum of Rectangle No Larger Than K | 35% | Hard | |
| 0365 | * Water and Jug Problem | 28% | Medium | |
| 0367 | * Valid Perfect Square | 39% | Easy | |
| 0368 | * Largest Divisible Subset | 34% | Medium | |
| 0371 | * Sum of Two Integers | 50% | Easy | |
| 0372 | * Super Pow | 35% | Medium | |
| 0373 | * Find K Pairs with Smallest Sums | 33% | Medium | |
| 0375 | * Guess Number Higher or Lower II | 37% | Medium | |
| 0376 | * Wiggle Subsequence | 37% | Medium | |
| 0377 | * Combination Sum IV | 43% | Medium | |
| 0378 | * Kth Smallest Element in a Sorted Matrix | 49% | Medium | |
| 0380 | * Insert Delete GetRandom O(1) | 42% | Medium | |
| 0381 | * Insert Delete GetRandom O(1) - Duplicates allowed | 31% | Hard | |
| 0382 | * Linked List Random Node | 49% | Medium | |
| 0383 | * Ransom Note | 49% | Easy | |
| 0384 | * Shuffle an Array | 49% | Medium | |
| 0385 | * Mini Parser | 31% | Medium | |
| 0386 | * Lexicographical Numbers | 45% | Medium | |
| 0387 | * First Unique Character in a String | 49% | Easy | |
| 0388 | * Longest Absolute File Path | 39% | Medium | |
| 0389 | * Find the Difference | 52% | Easy | |
| 0390 | * Elimination Game | 43% | Medium | |
| 0391 | * Perfect Rectangle | 28% | Hard | |
| 0392 | * Is Subsequence | 46% | Medium | |
| 0393 | * UTF-8 Validation | 35% | Medium | |
| 0394 | * Decode String | 44% | Medium | |
| 0395 | * Longest Substring with At Least K Repeating Characters | 38% | Medium | |
| 0396 | * Rotate Function | 35% | Medium | |
| 0397 | * Integer Replacement | 31% | Medium | |
| 0398 | * Random Pick Index | 49% | Medium | |
| 0399 | * Evaluate Division | 47% | Medium | |
| 0400 | * Nth Digit | 30% | Easy | |
| 0401 | * Binary Watch | 45% | Easy | |
| 0402 | * Remove K Digits | 26% | Medium | |
| 0403 | * Frog Jump | 36% | Hard | |
| 0404 | * Sum of Left Leaves | 49% | Easy | |
| 0405 | * Convert a Number to Hexadecimal | 41% | Easy | |
| 0406 | * Queue Reconstruction by Height | 59% | Medium | |
| 0407 | * Trapping Rain Water II | 39% | Hard | |
| 0409 | * Longest Palindrome | 47% | Easy | |
| 0410 | * Split Array Largest Sum | 42% | Hard | |
| 0412 | * Fizz Buzz | 59% | Easy | |
| 0413 | * Arithmetic Slices | 55% | Medium | |
| 0414 | * Third Maximum Number | 28% | Easy | |
| 0415 | * Add Strings | 43% | Easy | |
| 0416 | * Partition Equal Subset Sum | 40% | Medium | |
| 0417 | * Pacific Atlantic Water Flow | 37% | Medium | |
| 0419 | * Battleships in a Board | 65% | Medium | |
| 0420 | * Strong Password Checker | 17% | Hard | |
| 0421 | * Maximum XOR of Two Numbers in an Array | 50% | Medium | |
| 0423 | * Reconstruct Original Digits from English | 45% | Medium | |
| 0424 | * Longest Repeating Character Replacement | 44% | Medium | |
| 0432 | * All O`one Data Structure | 29% | Hard | |
| 0433 | * Minimum Genetic Mutation | 37% | Medium | |
| 0434 | * Number of Segments in a String | 36% | Easy | |
| 0435 | * Non-overlapping Intervals | 41% | Medium | |
| 0436 | * Find Right Interval | 42% | Medium | |
| 0437 | * Path Sum III | 42% | Easy | |
| 0438 | * Find All Anagrams in a String | 37% | Easy | |
| 0440 | * K-th Smallest in Lexicographical Order | 26% | Hard | |
| 0441 | * Arranging Coins | 37% | Easy | |
| 0442 | * Find All Duplicates in an Array | 60% | Medium | |
| 0443 | * String Compression | 37% | Easy | |
| 0445 | * Add Two Numbers II | 49% | Medium | |
| 0446 | * Arithmetic Slices II - Subsequence | 30% | Hard | |
| 0447 | * Number of Boomerangs | 49% | Easy | |
| 0448 | * Find All Numbers Disappeared in an Array | 53% | Easy | |
| 0450 | * Delete Node in a BST | 39% | Medium | |
| 0451 | * Sort Characters By Frequency | 55% | Medium | |
| 0452 | * Minimum Number of Arrows to Burst Balloons | 46% | Medium | |
| 0453 | * Minimum Moves to Equal Array Elements | 49% | Easy | |
| 0454 | * 4Sum II | 50% | Medium | |
| 0455 | * Assign Cookies | 48% | Easy | |
| 0456 | * 132 Pattern | 27% | Medium | |
| 0457 | * Circular Array Loop | 27% | Medium | |
| 0458 | * Poor Pigs | 45% | Hard | |
| 0459 | * Repeated Substring Pattern | 39% | Easy | |
| 0460 | * LFU Cache | 28% | Hard | |
| 0461 | * Hamming Distance | 70% | Easy | |
| 0462 | * Minimum Moves to Equal Array Elements II | 52% | Medium | |
| 0463 | * Island Perimeter | 60% | Easy | |
| 0464 | * Can I Win | 27% | Medium | |
| 0466 | * Count The Repetitions | 27% | Hard | |
| 0467 | * Unique Substrings in Wraparound String | 33% | Medium | |
| 0468 | * Validate IP Address | 21% | Medium | |
| 0470 | * Implement Rand10() Using Rand7() | 44% | Medium | |
| 0472 | * Concatenated Words | 34% | Hard | |
| 0473 | * Matchsticks to Square | 35% | Medium | |
| 0474 | * Ones and Zeroes | 39% | Medium | |
| 0475 | * Heaters | 31% | Easy | |
| 0476 | * Number Complement | 62% | Easy | |
| 0477 | * Total Hamming Distance | 48% | Medium | |
| 0478 | * Generate Random Point in a Circle | 36% | Medium | |
| 0479 | * Largest Palindrome Product | 27% | Hard | |
| 0480 | * Sliding Window Median | 32% | Hard | |
| 0481 | * Magical String | 46% | Medium | |
| 0482 | * License Key Formatting | 40% | Easy | |
| 0483 | * Smallest Good Base | 34% | Hard | |
| 0485 | * Max Consecutive Ones | 54% | Easy | |
| 0486 | * Predict the Winner | 46% | Medium | |
| 0488 | * Zuma Game | 38% | Hard | |
| 0491 | * Increasing Subsequences | 41% | Medium | |
| 0492 | * Construct the Rectangle | 48% | Easy | |
| 0493 | * Reverse Pairs | 23% | Hard | |
| 0494 | * Target Sum | 45% | Medium | |
| 0495 | * Teemo Attacking | 52% | Medium | |
| 0496 | * Next Greater Element I | 59% | Easy | |
| 0497 | * Random Point in Non-overlapping Rectangles | 35% | Medium | |
| 0498 | * Diagonal Traverse | 45% | Medium | |
| 0500 | * Keyboard Row | 62% | Easy | |
| 0501 | * Find Mode in Binary Search Tree | 39% | Easy | |
| 0502 | * IPO | 37% | Hard | |
| 0503 | * Next Greater Element II | 50% | Medium | |
| 0504 | * Base 7 | 44% | Easy | |
| 0506 | * Relative Ranks | 48% | Easy | |
| 0507 | * Perfect Number | 34% | Easy | |
| 0508 | * Most Frequent Subtree Sum | 54% | Medium | |
| 0509 | * Fibonacci Number | 66% | Easy | |
| 0513 | * Find Bottom Left Tree Value | 58% | Medium | |
| 0514 | * Freedom Trail | 40% | Hard | |
| 0515 | * Find Largest Value in Each Tree Row | 57% | Medium | |
| 0516 | * Longest Palindromic Subsequence | 46% | Medium | |
| 0517 | * Super Washing Machines | 36% | Hard | |
| 0518 | * Coin Change 2 | 42% | Medium | |
| 0519 | * Random Flip Matrix | 33% | Medium | |
| 0520 | * Detect Capital | 52% | Easy | |
| 0521 | * Longest Uncommon Subsequence I | 56% | Easy | |
| 0522 | * Longest Uncommon Subsequence II | 32% | Medium | |
| 0523 | * Continuous Subarray Sum | 24% | Medium | |
| 0524 | * Longest Word in Dictionary through Deleting | 45% | Medium | |
| 0525 | * Contiguous Array | 42% | Medium | |
| 0526 | * Beautiful Arrangement | 54% | Medium | |
| 0528 | * Random Pick with Weight | 42% | Medium | |
| 0529 | * Minesweeper | 52% | Medium | |
| 0530 | * Minimum Absolute Difference in BST | 50% | Easy | |
| 0532 | * K-diff Pairs in an Array | 29% | Easy | |
| 0537 | * Complex Number Multiplication | 65% | Medium | |
| 0538 | * Convert BST to Greater Tree | 50% | Easy | |
| 0539 | * Minimum Time Difference | 47% | Medium | |
| 0540 | * Single Element in a Sorted Array | 57% | Medium | |
| 0541 | * Reverse String II | 45% | Easy | |
| 0542 | * 01 Matrix | 35% | Medium | |
| 0543 | * Diameter of Binary Tree | 46% | Easy | |
| 0546 | * Remove Boxes | 38% | Hard | |
| 0547 | * Friend Circles | 53% | Medium | |
| 0551 | * Student Attendance Record I | 45% | Easy | |
| 0552 | * Student Attendance Record II | 32% | Hard | |
| 0553 | * Optimal Division | 55% | Medium | |
| 0554 | * Brick Wall | 47% | Medium | |
| 0556 | * Next Greater Element III | 29% | Medium | |
| 0557 | * Reverse Words in a String III | 63% | Easy | |
| 0560 | * Subarray Sum Equals K | 42% | Medium | |
| 0561 | * Array Partition I | 68% | Easy | |
| 0563 | * Binary Tree Tilt | 46% | Easy | |
| 0564 | * Find the Closest Palindrome | 18% | Hard | |
| 0565 | * Array Nesting | 52% | Medium | |
| 0566 | * Reshape the Matrix | 58% | Easy | |
| 0567 | * Permutation in String | 38% | Medium | |
| 0572 | * Subtree of Another Tree | 41% | Easy | |
| 0575 | * Distribute Candies | 59% | Easy | |
| 0576 | * Out of Boundary Paths | 31% | Medium | |
| 0581 | * Shortest Unsorted Continuous Subarray | 29% | Easy | |
| 0583 | * Delete Operation for Two Strings | 44% | Medium | |
| 0587 | * Erect the Fence | 34% | Hard | |
| 0591 | * Tag Validator | 32% | Hard | |
| 0592 | * Fraction Addition and Subtraction | 46% | Medium | |
| 0593 | * Valid Square | 40% | Medium | |
| 0594 | * Longest Harmonious Subsequence | 43% | Easy | |
| 0598 | * Range Addition II | 48% | Easy | |
| 0599 | * Minimum Index Sum of Two Lists | 47% | Easy | |
| 0600 | * Non-negative Integers without Consecutive Ones | 32% | Hard | |
| 0605 | * Can Place Flowers | 30% | Easy | |
| 0606 | * Construct String from Binary Tree | 51% | Easy | |
| 0609 | * Find Duplicate File in System | 54% | Medium | |
| 0611 | * Valid Triangle Number | 45% | Medium | |
| 0617 | * Merge Two Binary Trees | 70% | Easy | |
| 0621 | * Task Scheduler | 45% | Medium | |
| 0622 | * Design Circular Queue | 39% | Medium | |
| 0623 | * Add One Row to Tree | 47% | Medium | |
| 0628 | * Maximum Product of Three Numbers | 45% | Easy | |
| 0629 | * K Inverse Pairs Array | 29% | Hard | |
| 0630 | * Course Schedule III | 31% | Hard | |
| 0632 | * Smallest Range | 47% | Hard | |
| 0633 | * Sum of Square Numbers | 32% | Easy | |
| 0636 | * Exclusive Time of Functions | 48% | Medium | |
| 0637 | * Average of Levels in Binary Tree | 58% | Easy | |
| 0638 | * Shopping Offers | 48% | Medium | |
| 0639 | * Decode Ways II | 25% | Hard | |
| 0640 | * Solve the Equation | 40% | Medium | |
| 0641 | * Design Circular Deque | 49% | Medium | |
| 0643 | * Maximum Average Subarray I | 39% | Easy | |
| 0645 | * Set Mismatch | 40% | Easy | |
| 0646 | * Maximum Length of Pair Chain | 48% | Medium | |
| 0647 | * Palindromic Substrings | 56% | Medium | |
| 0648 | * Replace Words | 51% | Medium | |
| 0649 | * Dota2 Senate | 37% | Medium | |
| 0650 | * 2 Keys Keyboard | 46% | Medium | |
| 0652 | * Find Duplicate Subtrees | 45% | Medium | |
| 0653 | * Two Sum IV - Input is a BST | 52% | Easy | |
| 0654 | * Maximum Binary Tree | 75% | Medium | |
| 0655 | * Print Binary Tree | 51% | Medium | |
| 0657 | * Robot Return to Origin | 71% | Easy | |
| 0658 | * Find K Closest Elements | 37% | Medium | |
| 0659 | * Split Array into Consecutive Subsequences | 40% | Medium | |
| 0661 | * Image Smoother | 48% | Easy | |
| 0662 | * Maximum Width of Binary Tree | 39% | Medium | |
| 0664 | * Strange Printer | 36% | Hard | |
| 0665 | * Non-decreasing Array | 19% | Easy | |
| 0667 | * Beautiful Arrangement II | 51% | Medium | |
| 0668 | * Kth Smallest Number in Multiplication Table | 41% | Hard | |
| 0669 | * Trim a Binary Search Tree | 60% | Easy | |
| 0670 | * Maximum Swap | 39% | Medium | |
| 0671 | * Second Minimum Node In a Binary Tree | 43% | Easy | |
| 0672 | * Bulb Switcher II | 49% | Medium | |
| 0673 | * Number of Longest Increasing Subsequence | 33% | Medium | |
| 0674 | * Longest Continuous Increasing Subsequence | 44% | Easy | |
| 0675 | * Cut Off Trees for Golf Event | 30% | Hard | |
| 0676 | * Implement Magic Dictionary | 51% | Medium | |
| 0677 | * Map Sum Pairs | 51% | Medium | |
| 0678 | * Valid Parenthesis String | 32% | Medium | |
| 0679 | * 24 Game | 42% | Hard | |
| 0680 | * Valid Palindrome II | 34% | Easy | |
| 0682 | * Baseball Game | 60% | Easy | |
| 0684 | * Redundant Connection | 51% | Medium | |
| 0685 | * Redundant Connection II | 30% | Hard | |
| 0686 | * Repeated String Match | 31% | Easy | |
| 0687 | * Longest Univalue Path | 33% | Easy | |
| 0688 | * Knight Probability in Chessboard | 44% | Medium | |
| 0689 | * Maximum Sum of 3 Non-Overlapping Subarrays | 44% | Hard | |
| 0691 | * Stickers to Spell Word | 38% | Hard | |
| 0692 | * Top K Frequent Words | 45% | Medium | |
| 0693 | * Binary Number with Alternating Bits | 57% | Easy | |
| 0695 | * Max Area of Island | 57% | Medium | |
| 0696 | * Count Binary Substrings | 53% | Easy | |
| 0697 | * Degree of an Array | 50% | Easy | |
| 0698 | * Partition to K Equal Sum Subsets | 42% | Medium | |
| 0699 | * Falling Squares | 39% | Hard | |
| 0700 | * Search in a Binary Search Tree | 67% | Easy | |
| 0701 | * Insert into a Binary Search Tree | 75% | Medium | |
| 0703 | * Kth Largest Element in a Stream | 46% | Easy | |
| 0704 | * Binary Search | 47% | Easy | |
| 0705 | * Design HashSet | 53% | Easy | |
| 0706 | * Design HashMap | 55% | Easy | |
| 0707 | * Design Linked List | 22% | Easy | |
| 0709 | * To Lower Case | 76% | Easy | |
| 0710 | * Random Pick with Blacklist | 30% | Hard | |
| 0712 | * Minimum ASCII Delete Sum for Two Strings | 54% | Medium | |
| 0713 | * Subarray Product Less Than K | 36% | Medium | |
| 0714 | * Best Time to Buy and Sell Stock with Transaction Fee | 50% | Medium | |
| 0715 | * Range Module | 35% | Hard | |
| 0717 | * 1-bit and 2-bit Characters | 49% | Easy | |
| 0718 | * Maximum Length of Repeated Subarray | 45% | Medium | |
| 0719 | * Find K-th Smallest Pair Distance | 29% | Hard | |
| 0720 | * Longest Word in Dictionary | 44% | Easy | |
| 0721 | * Accounts Merge | 40% | Medium | |
| 0722 | * Remove Comments | 31% | Medium | |
| 0724 | * Find Pivot Index | 41% | Easy | |
| 0725 | * Split Linked List in Parts | 48% | Medium | |
| 0726 | * Number of Atoms | 44% | Hard | |
| 0728 | * Self Dividing Numbers | 69% | Easy | |
| 0729 | * My Calendar I | 47% | Medium | |
| 0730 | * Count Different Palindromic Subsequences | 38% | Hard | |
| 0731 | * My Calendar II | 44% | Medium | |
| 0732 | * My Calendar III | 54% | Hard | |
| 0733 | * Flood Fill | 50% | Easy | |
| 0735 | * Asteroid Collision | 38% | Medium | |
| 0736 | * Parse Lisp Expression | 44% | Hard | |
| 0738 | * Monotone Increasing Digits | 41% | Medium | |
| 0739 | * Daily Temperatures | 59% | Medium | |
| 0740 | * Delete and Earn | 45% | Medium | |
| 0741 | * Cherry Pickup | 29% | Hard | |
| 0743 | * Network Delay Time | 41% | Medium | |
| 0744 | * Find Smallest Letter Greater Than Target | 43% | Easy | |
| 0745 | * Prefix and Suffix Search | 30% | Hard | |
| 0746 | * Min Cost Climbing Stairs | 47% | Easy | |
| 0747 | * Largest Number At Least Twice of Others | 40% | Easy | |
| 0748 | * Shortest Completing Word | 53% | Easy | |
| 0749 | * Contain Virus | 41% | Hard | |
| 0752 | * Open the Lock | 45% | Medium | |
| 0753 | * Cracking the Safe | 46% | Hard | |
| 0754 | * Reach a Number | 32% | Easy | |
| 0756 | * Pyramid Transition Matrix | 51% | Medium | |
| 0757 | * Set Intersection Size At Least Two | 36% | Hard | |
| 0761 | * Special Binary String | 50% | Hard | |
| 0762 | * Prime Number of Set Bits in Binary Representation | 58% | Easy | |
| 0763 | * Partition Labels | 70% | Medium | |
| 0764 | * Largest Plus Sign | 43% | Medium | |
| 0765 | * Couples Holding Hands | 51% | Hard | |
| 0766 | * Toeplitz Matrix | 61% | Easy | |
| 0767 | * Reorganize String | 41% | Medium | |
| 0768 | * Max Chunks To Make Sorted II | 45% | Hard | |
| 0769 | * Max Chunks To Make Sorted | 51% | Medium | |
| 0770 | * Basic Calculator IV | 45% | Hard | |
| 0771 | * Jewels and Stones | 83% | Easy | |
| 0773 | * Sliding Puzzle | 52% | Hard | |
| 0775 | * Global and Local Inversions | 38% | Medium | |
| 0777 | * Swap Adjacent in LR String | 33% | Medium | |
| 0778 | * Swim in Rising Water | 47% | Hard | |
| 0779 | * K-th Symbol in Grammar | 37% | Medium | |
| 0780 | * Reaching Points | 27% | Hard | |
| 0781 | * Rabbits in Forest | 51% | Medium | |
| 0782 | * Transform to Chessboard | 39% | Hard | |
| 0783 | * Minimum Distance Between BST Nodes | 50% | Easy | |
| 0784 | * Letter Case Permutation | 56% | Easy | |
| 0785 | * Is Graph Bipartite? | 43% | Medium | |
| 0786 | * K-th Smallest Prime Fraction | 39% | Hard | |
| 0787 | * Cheapest Flights Within K Stops | 34% | Medium | |
| 0788 | * Rotated Digits | 54% | Easy | |
| 0789 | * Escape The Ghosts | 55% | Medium | |
| 0790 | * Domino and Tromino Tiling | 35% | Medium | |
| 0791 | * Custom Sort String | 61% | Medium | |
| 0792 | * Number of Matching Subsequences | 42% | Medium | |
| 0793 | * Preimage Size of Factorial Zeroes Function | 38% | Hard | |
| 0794 | * Valid Tic-Tac-Toe State | 29% | Medium | |
| 0795 | * Number of Subarrays with Bounded Maximum | 43% | Medium | |
| 0796 | * Rotate String | 48% | Easy | |
| 0797 | * All Paths From Source to Target | 70% | Medium | |
| 0798 | * Smallest Rotation with Highest Score | 39% | Hard | |
| 0799 | * Champagne Tower | 33% | Medium | |
| 0801 | * Minimum Swaps To Make Sequences Increasing | 34% | Medium | |
| 0802 | * Find Eventual Safe States | 43% | Medium | |
| 0803 | * Bricks Falling When Hit | 28% | Hard | |
| 0804 | * Unique Morse Code Words | 74% | Easy | |
| 0805 | * Split Array With Same Average | 24% | Hard | |
| 0806 | * Number of Lines To Write String | 62% | Easy | |
| 0807 | * Max Increase to Keep City Skyline | 81% | Medium | |
| 0808 | * Soup Servings | 36% | Medium | |
| 0809 | * Expressive Words | 43% | Medium | |
| 0810 | * Chalkboard XOR Game | 44% | Hard | |
| 0811 | * Subdomain Visit Count | 65% | Easy | |
| 0812 | * Largest Triangle Area | 55% | Easy | |
| 0813 | * Largest Sum of Averages | 44% | Medium | |
| 0814 | * Binary Tree Pruning | 70% | Medium | |
| 0815 | * Bus Routes | 39% | Hard | |
| 0816 | * Ambiguous Coordinates | 43% | Medium | |
| 0817 | * Linked List Components | 54% | Medium | |
| 0818 | * Race Car | 34% | Hard | |
| 0819 | * Most Common Word | 42% | Easy | |
| 0820 | * Short Encoding of Words | 46% | Medium | |
| 0821 | * Shortest Distance to a Character | 63% | Easy | |
| 0822 | * Card Flipping Game | 40% | Medium | |
| 0823 | * Binary Trees With Factors | 32% | Medium | |
| 0824 | * Goat Latin | 57% | Easy | |
| 0825 | * Friends Of Appropriate Ages | 36% | Medium | |
| 0826 | * Most Profit Assigning Work | 35% | Medium | |
| 0827 | * Making A Large Island | 43% | Hard | |
| 0828 | * Unique Letter String | 39% | Hard | |
| 0829 | * Consecutive Numbers Sum | 32% | Hard | |
| 0830 | * Positions of Large Groups | 47% | Easy | |
| 0831 | * Masking Personal Information | 42% | Medium | |
| 0832 | * Flipping an Image | 72% | Easy | |
| 0833 | * Find And Replace in String | 45% | Medium | |
| 0834 | * Sum of Distances in Tree | 39% | Hard | |
| 0835 | * Image Overlap | 52% | Medium | |
| 0836 | * Rectangle Overlap | 46% | Easy | |
| 0837 | * New 21 Game | 31% | Medium | |
| 0838 | * Push Dominoes | 43% | Medium | |
| 0839 | * Similar String Groups | 34% | Hard | |
| 0840 | * Magic Squares In Grid | 35% | Easy | |
| 0841 | * Keys and Rooms | 60% | Medium | |
| 0842 | * Split Array into Fibonacci Sequence | 34% | Medium | |
| 0843 | * Guess the Word | 43% | Hard | |
| 0844 | * Backspace String Compare | 45% | Easy | |
| 0845 | * Longest Mountain in Array | 34% | Medium | |
| 0846 | * Hand of Straights | 48% | Medium | |
| 0847 | * Shortest Path Visiting All Nodes | 46% | Hard | |
| 0848 | * Shifting Letters | 40% | Medium | |
| 0849 | * Maximize Distance to Closest Person | 40% | Easy | |
| 0850 | * Rectangle Area II | 44% | Hard | |
| 0851 | * Loud and Rich | 47% | Medium | |
| 0852 | * Peak Index in a Mountain Array | 69% | Easy | |
| 0853 | * Car Fleet | 39% | Medium | |
| 0854 | * K-Similar Strings | 33% | Hard | |
| 0855 | * Exam Room | 38% | Medium | |
| 0856 | * Score of Parentheses | 55% | Medium | |
| 0857 | * Minimum Cost to Hire K Workers | 47% | Hard | |
| 0858 | * Mirror Reflection | 51% | Medium | |
| 0859 | * Buddy Strings | 27% | Easy | |
| 0860 | * Lemonade Change | 50% | Easy | |
| 0861 | * Score After Flipping Matrix | 69% | Medium | |
| 0862 | * Shortest Subarray with Sum at Least K | 22% | Hard | |
| 0863 | * All Nodes Distance K in Binary Tree | 46% | Medium | |
| 0864 | * Shortest Path to Get All Keys | 35% | Hard | |
| 0865 | * Smallest Subtree with all the Deepest Nodes | 55% | Medium | |
| 0866 | * Prime Palindrome | 20% | Medium | |
| 0867 | * Transpose Matrix | 63% | Easy | |
| 0868 | * Binary Gap | 59% | Easy | |
| 0869 | * Reordered Power of 2 | 50% | Medium | |
| 0870 | * Advantage Shuffle | 42% | Medium | |
| 0871 | * Minimum Number of Refueling Stops | 28% | Hard | |
| 0872 | * Leaf-Similar Trees | 63% | Easy | |
| 0873 | * Length of Longest Fibonacci Subsequence | 46% | Medium | |
| 0874 | * Walking Robot Simulation | 31% | Easy | |
| 0875 | * Koko Eating Bananas | 45% | Medium | |
| 0876 | * Middle of the Linked List | 63% | Easy | |
| 0877 | * Stone Game | 61% | Medium | |
| 0878 | * Nth Magical Number | 25% | Hard | |
| 0879 | * Profitable Schemes | 36% | Hard | |
| 0880 | * Decoded String at Index | 23% | Medium | |
| 0881 | * Boats to Save People | 43% | Medium | |
| 0882 | * Reachable Nodes In Subdivided Graph | 37% | Hard | |
| 0883 | * Projection Area of 3D Shapes | 65% | Easy | |
| 0884 | * Uncommon Words from Two Sentences | 60% | Easy | |
| 0885 | * Spiral Matrix III | 63% | Medium | |
| 0886 | * Possible Bipartition | 40% | Medium | |
| 0887 | * Super Egg Drop | 25% | Hard | |
| 0888 | * Fair Candy Swap | 56% | Easy | |
| 0889 | * Construct Binary Tree from Preorder and Postorder Traversal | 59% | Medium | |
| 0890 | * Find and Replace Pattern | 71% | Medium | |
| 0891 | * Sum of Subsequence Widths | 28% | Hard | |
| 0892 | * Surface Area of 3D Shapes | 55% | Easy | |
| 0893 | * Groups of Special-Equivalent Strings | 62% | Easy | |
| 0894 | * All Possible Full Binary Trees | 70% | Medium | |
| 0895 | * Maximum Frequency Stack | 55% | Hard | |
| 0896 | * Monotonic Array | 55% | Easy | |
| 0897 | * Increasing Order Search Tree | 64% | Easy | |
| 0898 | * Bitwise ORs of Subarrays | 33% | Medium | |
| 0899 | * Orderly Queue | 47% | Hard | |
| 0900 | * RLE Iterator | 50% | Medium | |
| 0901 | * Online Stock Span | 48% | Medium | |
| 0902 | * Numbers At Most N Given Digit Set | 28% | Hard | |
| 0903 | * Valid Permutations for DI Sequence | 43% | Hard | |
| 0904 | * Fruit Into Baskets | 41% | Medium | |
| 0905 | * Sort Array By Parity | 72% | Easy | |
| 0906 | * Super Palindromes | 30% | Hard | |
| 0907 | * Sum of Subarray Minimums | 26% | Medium | |
| 0908 | * Smallest Range I | 64% | Easy | |
| 0909 | * Snakes and Ladders | 32% | Medium | |
| 0910 | * Smallest Range II | 23% | Medium | |
| 0911 | * Online Election | 46% | Medium | |
| 0912 | * Sort an Array | 64% | Medium | |
| 0913 | * Cat and Mouse | 28% | Hard | |
| 0914 | * X of a Kind in a Deck of Cards | 34% | Easy | |
| 0915 | * Partition Array into Disjoint Intervals | 43% | Medium | |
| 0916 | * Word Subsets | 45% | Medium | |
| 0917 | * Reverse Only Letters | 55% | Easy | |
| 0918 | * Maximum Sum Circular Subarray | 31% | Medium | |
| 0919 | * Complete Binary Tree Inserter | 55% | Medium | |
| 0920 | * Number of Music Playlists | 43% | Hard | |
| 0921 | * Minimum Add to Make Parentheses Valid | 70% | Medium | |
| 0922 | * Sort Array By Parity II | 67% | Easy | |
| 0923 | * 3Sum With Multiplicity | 33% | Medium | |
| 0924 | * Minimize Malware Spread | 39% | Hard | |
| 0925 | * Long Pressed Name | 44% | Easy | |
| 0926 | * Flip String to Monotone Increasing | 49% | Medium | |
| 0927 | * Three Equal Parts | 30% | Hard | |
| 0928 | * Minimize Malware Spread II | 38% | Hard | |
| 0929 | * Unique Email Addresses | 71% | Easy | |
| 0930 | * Binary Subarrays With Sum | 37% | Medium | |
| 0931 | * Minimum Falling Path Sum | 58% | Medium | |
| 0932 | * Beautiful Array | 52% | Medium | |
| 0933 | * Number of Recent Calls | 69% | Easy | |
| 0934 | * Shortest Bridge | 43% | Medium | |
| 0935 | * Knight Dialer | 40% | Medium | |
| 0936 | * Stamping The Sequence | 36% | Hard | |
| 0937 | * Reorder Log Files | 57% | Easy | |
| 0938 | * Range Sum of BST | 79% | Easy | |
| 0939 | * Minimum Area Rectangle | 50% | Medium | |
| 0940 | * Distinct Subsequences II | 39% | Hard | |
| 0941 | * Valid Mountain Array | 35% | Easy | |
| 0942 | * DI String Match | 69% | Easy | |
| 0943 | * Find the Shortest Superstring | 37% | Hard | |
| 0944 | * Delete Columns to Make Sorted | 69% | Easy | |
| 0945 | * Minimum Increment to Make Array Unique | 42% | Medium | |
| 0946 | * Validate Stack Sequences | 57% | Medium | |
| 0947 | * Most Stones Removed with Same Row or Column | 54% | Medium | |
| 0948 | * Bag of Tokens | 39% | Medium | |
| 0949 | * Largest Time for Given Digits | 33% | Easy | |
| 0950 | * Reveal Cards In Increasing Order | 71% | Medium | |
| 0951 | * Flip Equivalent Binary Trees | 65% | Medium | |
| 0952 | * Largest Component Size by Common Factor | 26% | Hard | |
| 0953 | * Verifying an Alien Dictionary | 55% | Easy | |
| 0954 | * Array of Doubled Pairs | 34% | Medium | |
| 0955 | * Delete Columns to Make Sorted II | 31% | Medium | |
| 0956 | * Tallest Billboard | 37% | Hard | |
| 0957 | * Prison Cells After N Days | 37% | Medium | |
| 0958 | * Check Completeness of a Binary Tree | 46% | Medium | |
| 0959 | * Regions Cut By Slashes | 62% | Medium | |
| 0960 | * Delete Columns to Make Sorted III | 52% | Hard | |
| 0961 | * N-Repeated Element in Size 2N Array | 72% | Easy | |
| 0962 | * Maximum Width Ramp | 41% | Medium | |
| 0963 | * Minimum Area Rectangle II | 44% | Medium | |
| 0964 | * Least Operators to Express Number | 40% | Hard | |
| 0965 | * Univalued Binary Tree | 66% | Easy | |
| 0966 | * Vowel Spellchecker | 41% | Medium | |
| 0967 | * Numbers With Same Consecutive Differences | 36% | Medium | |
| 0968 | * Binary Tree Cameras | 34% | Hard | |
| 0969 | * Pancake Sorting | 62% | Medium | |
| 0970 | * Powerful Integers | 39% | Easy | |
| 0971 | * Flip Binary Tree To Match Preorder Traversal | 42% | Medium | |
| 0972 | * Equal Rational Numbers | 40% | Hard | |
| 0973 | * K Closest Points to Origin | 62% | Medium | |
| 0974 | * Subarray Sums Divisible by K | 44% | Medium | |
| 0975 | * Odd Even Jump | 49% | Hard | |
| 0976 | * Largest Perimeter Triangle | 56% | Easy | |
| 0977 | * Squares of a Sorted Array | 72% | Easy | |
| 0978 | * Longest Turbulent Subarray | 45% | Medium | |
| 0979 | * Distribute Coins in Binary Tree | 66% | Medium | |
| 0980 | * Unique Paths III | 71% | Hard | |
| 0981 | * Time Based Key-Value Store | 50% | Medium | |
| 0982 | * Triples with Bitwise AND Equal To Zero | 53% | Hard | |
| 0983 | * Minimum Cost For Tickets | 57% | Medium | |
| 0984 | * String Without AAA or BBB | 33% | Medium | |
| 0985 | * Sum of Even Numbers After Queries | 64% | Easy | |
| 0986 | * Interval List Intersections | 62% | Medium | |
| 0987 | * Vertical Order Traversal of a Binary Tree | 32% | Medium | |
| 0988 | * Smallest String Starting From Leaf | 46% | Medium | |
| 0989 | * Add to Array-Form of Integer | 44% | Easy | |
| 0990 | * Satisfiability of Equality Equations | 39% | Medium | |
| 0991 | * Broken Calculator | 39% | Medium | |
| 0992 | * Subarrays with K Different Integers | 45% | Hard | |
| 0993 | * Cousins in Binary Tree | 52% | Easy | |
| 0994 | * Rotting Oranges | 46% | Easy | |
| 0995 | * Minimum Number of K Consecutive Bit Flips | 49% | Hard | |
| 0996 | * Number of Squareful Arrays | 48% | Hard | |
| 0997 | * Find the Town Judge | 48% | Easy | |
| 0998 | * Maximum Binary Tree II | 62% | Medium | |
| 0999 | * Available Captures for Rook | 66% | Easy | |
| 1000 | * Minimum Cost to Merge Stones | 29% | Hard | |
| 1001 | * Grid Illumination | 34% | Hard | |
| 1002 | * Find Common Characters | 65% | Easy | |
| 1003 | * Check If Word Is Valid After Substitutions | 51% | Medium | |
| 1004 | * Max Consecutive Ones III | 52% | Medium | |
| 1005 | * Maximize Sum Of Array After K Negations | 49% | Easy | |
| 1006 | * Clumsy Factorial | 54% | Medium | |
| 1007 | * Minimum Domino Rotations For Equal Row | 47% | Medium | |
| 1008 | * Construct Binary Search Tree from Preorder Traversal | 72% | Medium | |
| 1009 | * Complement of Base 10 Integer | 58% | Easy | |
| 1010 | * Pairs of Songs With Total Durations Divisible by 60 | 45% | Easy | |
| 1011 | * Capacity To Ship Packages Within D Days | 52% | Medium | |
| 1012 | * Numbers With Repeated Digits | 34% | Hard | |
| 1013 | * Partition Array Into Three Parts With Equal Sum | 55% | Easy | |
| 1014 | * Best Sightseeing Pair | 48% | Medium | |
| 1015 | * Smallest Integer Divisible by K | 27% | Medium | |
| 1016 | * Binary String With Substrings Representing 1 To N | 62% | Medium | |
| 1017 | * Convert to Base -2 | 55% | Medium | |
| 1018 | * Binary Prefix Divisible By 5 | 46% | Easy | |
| 1019 | * Next Greater Node In Linked List | 56% | Medium | |
| 1020 | * Number of Enclaves | 54% | Medium | |
| 1021 | * Remove Outermost Parentheses | 77% | Easy | |
| 1022 | * Sum of Root To Leaf Binary Numbers | 51% | Easy | |
| 1023 | * Camelcase Matching | 57% | Medium | |
| 1024 | * Video Stitching | 47% | Medium | |
| 1025 | * Divisor Game | 62% | Easy | |
| 1026 | * Maximum Difference Between Node and Ancestor | 58% | Medium | |
| 1027 | * Longest Arithmetic Sequence | 45% | Medium | |
| 1028 | * Recover a Tree From Preorder Traversal | 71% | Hard | |
| 1029 | * Two City Scheduling | 53% | Easy | |
| 1030 | * Matrix Cells in Distance Order | 66% | Easy | |
| 1031 | * Maximum Sum of Two Non-Overlapping Subarrays | 55% | Medium | |
| 1032 | * Stream of Characters | 40% | Hard | |
| 1033 | * Moving Stones Until Consecutive | 33% | Easy | |
| 1034 | * Coloring A Border | 42% | Medium | |
| 1035 | * Uncrossed Lines | 50% | Medium | |
| 1036 | * Escape a Large Maze | 38% | Hard | |
| 1037 | * Valid Boomerang | 37% | Easy | |
| 1038 | * Binary Search Tree to Greater Sum Tree | 80% | Medium | |
| 1039 | * Minimum Score Triangulation of Polygon | 39% | Medium | |
| 1040 | * Moving Stones Until Consecutive II | 45% | Medium | |
| 1041 | * Robot Bounded In Circle | 40% | Easy | |
| 1042 | * Flower Planting With No Adjacent | 45% | Easy | |
| 1043 | * Partition Array for Maximum Sum | 58% | Medium | |
| 1044 | * Longest Duplicate Substring | 23% | Hard |
以下免费的算法题，暂时不能提交 Go 解答
- 116.Populating Next Right Pointers in Each Node
- 117.Populating Next Right Pointers in Each Node II
- 133.Clone Graph
- 138.Copy List with Random Pointer
- 151.Reverse Words in a String
- 278.First Bad Version
- 284.Peeking Iterator
- 297.Serialize and Deserialize Binary Tree
- 341.Flatten Nested List Iterator
- 374.Guess Number Higher or Lower
- 426.Convert Binary Search Tree to Sorted Doubly Linked List
- 427.Construct Quad Tree
- 429.N-ary Tree Level Order Traversal
- 430.Flatten a Multilevel Doubly Linked List
- 449.Serialize and Deserialize BST
- 535.Encode and Decode TinyURL
- 558.Quad Tree Intersection
- 559.Maximum Depth of N-ary Tree
- 589.N-ary Tree Preorder Traversal
- 590.N-ary Tree Postorder Traversal
- 690.Employee Importance
- 708.Insert into a Cyclic Sorted List
notes LeetCode 题解，也会记录我答题过程中对知识点的总结。
- 仔细研读经典算法书籍（详细书单见后文）
- 把所有经典数据结构和算法都写一遍
- 刷题（LeetCode等）
- 找志同道合的人一起交流学习
- 参加比赛
- 。。。
- ☆☆☆☆☆《算法基础-打开算法之门》科尔曼[算法导论作者之一]（阅读进度20%）
- ☆☆☆☆☆《算法导论》 是一本对算法介绍比较全面的经典书籍
- ☆☆☆☆《编程珠玑I》
- ☆☆☆☆《编程珠玑II》
- ☆☆☆《算法-Algorithms》第四版，普林斯顿大学，这本近千页的书只有6章,其中四章分别是排序，查找，图，字符串，足见介绍的有多么的细致。（暂时不阅读）
- 《剑指offer》
- 《编程之法:面试和算法心得》
- 《算法谜题》
- 《编程之美》
- 《推荐系统-技术、评估及高效算法》
- 《深入理解计算机系统》
- 《TCP/IP详解一二三卷》
2. July 博客
比方说：《数据挖掘十大算法系列》、《经典算法研究》、《BAT机器学习面试1000题系列》、《程序员编程艺术》等系列。
- Fork 此项目
- 克隆你自己的项目到你本地 （git clone https://github.com/your_github_name/learning-algorithms.git）
- 创建你新的 feature 分支 (git checkout -b my_feature)
- 添加并提交你的修改内容 (git commit -am 'Add some feature')
- 推送到你自己项目的远端 feature 分支 (git push origin my_feature)
- 创建一个新的 PR（Pull Request）
License: BSD 3-Clause License