Leetcode

Some Leetcode algorithm and data structure answer wrote by Javascript/Python ... 💯.

[TOC]

初次下载仓库后需要执行 sh init-hook.sh.

提交规则 ❗❗❗：

• 在 ./answer/ 目录下提交答案即可，目录名为问题 ID，长度为4个字符，不符合规则的提交会被阻止；
• ./answer/ID/ 下的 README.md 自述文件会自动创建（如存在则不覆盖)，也可手动维护；
• README 中的记录表格无需手动维护，脚本会自动覆盖。

QUESTIONS

ID	Title	Answer	Difficulty
0001	Two Sum	JavaScript	Easy
0002	Add Two Numbers	JavaScript	Medium
0003	Longest Substring Without Repeating Characters	JavaScript	Medium
0004	Median of Two Sorted Arrays	JavaScript	Hard
0005	Longest Palindromic Substring	JavaScript	Medium
0006	ZigZag Conversion	JavaScript	Medium
0007	Reverse Integer	JavaScript	Easy
0008	String to Integer (atoi)	JavaScript	Medium
0009	Palindrome Number	JavaScript	Easy
0010	Regular Expression Matching	JavaScript	Hard
0011	Container With Most Water	JavaScript	Medium
0012	Integer to Roman	JavaScript	Medium
0013	Roman to Integer	JavaScript	Easy
0014	Longest Common Prefix	JavaScript	Easy
0015	3Sum	JavaScript	Medium
0016	3Sum Closest	JavaScript	Medium
0017	Letter Combinations of a Phone Number	JavaScript	Medium
0018	4Sum	JavaScript	Medium
0019	Remove Nth Node From End of List	JavaScript	Medium
0020	Valid Parentheses	JavaScript	Easy
0021	Merge Two Sorted Lists	TODO	Easy
0022	Generate Parentheses	TODO	Medium
0023	Merge k Sorted Lists	TODO	Hard
0024	Swap Nodes in Pairs	TODO	Medium
0025	Reverse Nodes in k-Group	TODO	Hard
0026	Remove Duplicates from Sorted Array	JavaScript	Easy
0027	Remove Element	JavaScript	Easy
0028	Implement strStr()	JavaScript	Easy
0029	Divide Two Integers	TODO	Medium
0030	Substring with Concatenation of All Words	TODO	Hard
0031	Next Permutation	TODO	Medium
0032	Longest Valid Parentheses	TODO	Hard
0033	Search in Rotated Sorted Array	TODO	Medium
0034	Find First and Last Position of Element in Sorted Array	JavaScript	Medium
0035	Search Insert Position	JavaScript	Easy
0036	Valid Sudoku	TODO	Medium
0037	Sudoku Solver	TODO	Hard
0038	Count and Say	TODO	Easy
0039	Combination Sum	TODO	Medium
0040	Combination Sum II	TODO	Medium
0041	First Missing Positive	TODO	Hard
0042	Trapping Rain Water	TODO	Hard
0043	Multiply Strings	TODO	Medium
0044	Wildcard Matching	TODO	Hard
0045	Jump Game II	TODO	Hard
0046	Permutations	TODO	Medium
0047	Permutations II	TODO	Medium
0048	Rotate Image	TODO	Medium
0049	Group Anagrams	TODO	Medium
0050	Pow(x, n)	TODO	Medium
0051	N-Queens	TODO	Hard
0052	N-Queens II	TODO	Hard
0053	Maximum Subarray	TODO	Easy
0054	Spiral Matrix	TODO	Medium
0055	Jump Game	TODO	Medium
0056	Merge Intervals	TODO	Medium
0057	Insert Interval	TODO	Hard
0058	Length of Last Word	TODO	Easy
0059	Spiral Matrix II	TODO	Medium
0060	Permutation Sequence	TODO	Medium
0061	Rotate List	TODO	Medium
0062	Unique Paths	TODO	Medium
0063	Unique Paths II	TODO	Medium
0064	Minimum Path Sum	TODO	Medium
0065	Valid Number	TODO	Hard
0066	Plus One	TODO	Easy
0067	Add Binary	TODO	Easy
0068	Text Justification	TODO	Hard
0069	Sqrt(x)	TODO	Easy
0070	Climbing Stairs	TODO	Easy
0071	Simplify Path	TODO	Medium
0072	Edit Distance	TODO	Hard
0073	Set Matrix Zeroes	TODO	Medium
0074	Search a 2D Matrix	TODO	Medium
0075	Sort Colors	TODO	Medium
0076	Minimum Window Substring	TODO	Hard
0077	Combinations	TODO	Medium
0078	Subsets	TODO	Medium
0079	Word Search	TODO	Medium
0080	Remove Duplicates from Sorted Array II	TODO	Medium
0081	Search in Rotated Sorted Array II	TODO	Medium
0082	Remove Duplicates from Sorted List II	Python	Medium
0083	Remove Duplicates from Sorted List	TODO	Easy
0084	Largest Rectangle in Histogram	TODO	Hard
0085	Maximal Rectangle	TODO	Hard
0086	Partition List	TODO	Medium
0087	Scramble String	TODO	Hard
0088	Merge Sorted Array	TODO	Easy
0089	Gray Code	TODO	Medium
0090	Subsets II	TODO	Medium
0091	Decode Ways	TODO	Medium
0092	Reverse Linked List II	TODO	Medium
0093	Restore IP Addresses	TODO	Medium
0094	Binary Tree Inorder Traversal	TODO	Medium
0095	Unique Binary Search Trees II	TODO	Medium
0096	Unique Binary Search Trees	TODO	Medium
0097	Interleaving String	TODO	Hard
0098	Validate Binary Search Tree	TODO	Medium
0099	Recover Binary Search Tree	TODO	Hard
0100	Same Tree	TODO	Easy
0101	Symmetric Tree	TODO	Easy
0102	Binary Tree Level Order Traversal	TODO	Medium
0103	Binary Tree Zigzag Level Order Traversal	TODO	Medium
0104	Maximum Depth of Binary Tree	TODO	Easy
0105	Construct Binary Tree from Preorder and Inorder Traversal	TODO	Medium
0106	Construct Binary Tree from Inorder and Postorder Traversal	TODO	Medium
0107	Binary Tree Level Order Traversal II	TODO	Easy
0108	Convert Sorted Array to Binary Search Tree	TODO	Easy
0109	Convert Sorted List to Binary Search Tree	TODO	Medium
0110	Balanced Binary Tree	TODO	Easy
0111	Minimum Depth of Binary Tree	TODO	Easy
0112	Path Sum	TODO	Easy
0113	Path Sum II	TODO	Medium
0114	Flatten Binary Tree to Linked List	TODO	Medium
0115	Distinct Subsequences	TODO	Hard
0116	Populating Next Right Pointers in Each Node	TODO	Medium
0117	Populating Next Right Pointers in Each Node II	TODO	Medium
0118	Pascal's Triangle	TODO	Easy
0119	Pascal's Triangle II	TODO	Easy
0120	Triangle	TODO	Medium
0121	Best Time to Buy and Sell Stock	TODO	Easy
0122	Best Time to Buy and Sell Stock II	TODO	Easy
0123	Best Time to Buy and Sell Stock III	TODO	Hard
0124	Binary Tree Maximum Path Sum	TODO	Hard
0125	Valid Palindrome	TODO	Easy
0126	Word Ladder II	TODO	Hard
0127	Word Ladder	TODO	Medium
0128	Longest Consecutive Sequence	TODO	Hard
0129	Sum Root to Leaf Numbers	TODO	Medium
0130	Surrounded Regions	TODO	Medium
0131	Palindrome Partitioning	TODO	Medium
0132	Palindrome Partitioning II	TODO	Hard
0133	Clone Graph	TODO	Medium
0134	Gas Station	TODO	Medium
0135	Candy	TODO	Hard
0136	Single Number	TODO	Easy
0137	Single Number II	TODO	Medium
0138	Copy List with Random Pointer	TODO	Medium
0139	Word Break	TODO	Medium
0140	Word Break II	TODO	Hard
0141	Linked List Cycle	TODO	Easy
0142	Linked List Cycle II	JavaScript	Medium
0143	Reorder List	TODO	Medium
0144	Binary Tree Preorder Traversal	TODO	Medium
0145	Binary Tree Postorder Traversal	TODO	Hard
0146	LRU Cache	TODO	Hard
0147	Insertion Sort List	TODO	Medium
0148	Sort List	TODO	Medium
0149	Max Points on a Line	TODO	Hard
0150	Evaluate Reverse Polish Notation	TODO	Medium
0151	Reverse Words in a String	TODO	Medium
0152	Maximum Product Subarray	TODO	Medium
0153	Find Minimum in Rotated Sorted Array	TODO	Medium
0154	Find Minimum in Rotated Sorted Array II	TODO	Hard
0155	Min Stack	TODO	Easy
0156	Binary Tree Upside Down	TODO	Medium
0157	Read N Characters Given Read4	TODO	Easy
0158	Read N Characters Given Read4 II - Call multiple times	TODO	Hard
0159	Longest Substring with At Most Two Distinct Characters	TODO	Hard
0160	Intersection of Two Linked Lists	TODO	Easy
0161	One Edit Distance	TODO	Medium
0162	Find Peak Element	TODO	Medium
0163	Missing Ranges	TODO	Medium
0164	Maximum Gap	TODO	Hard
0165	Compare Version Numbers	TODO	Medium
0166	Fraction to Recurring Decimal	TODO	Medium
0167	Two Sum II - Input array is sorted	TODO	Easy
0168	Excel Sheet Column Title	TODO	Easy
0169	Majority Element	TODO	Easy
0170	Two Sum III - Data structure design	TODO	Easy
0171	Excel Sheet Column Number	TODO	Easy
0172	Factorial Trailing Zeroes	TODO	Easy
0173	Binary Search Tree Iterator	TODO	Medium
0174	Dungeon Game	TODO	Hard
0175	Combine Two Tables	TODO	Easy
0176	Second Highest Salary	TODO	Easy
0177	Nth Highest Salary	TODO	Medium
0178	Rank Scores	TODO	Medium
0179	Largest Number	TODO	Medium
0180	Consecutive Numbers	TODO	Medium
0181	Employees Earning More Than Their Managers	TODO	Easy
0182	Duplicate Emails	TODO	Easy
0183	Customers Who Never Order	TODO	Easy
0184	Department Highest Salary	TODO	Medium
0185	Department Top Three Salaries	TODO	Hard
0186	Reverse Words in a String II	TODO	Medium
0187	Repeated DNA Sequences	TODO	Medium
0188	Best Time to Buy and Sell Stock IV	TODO	Hard
0189	Rotate Array	TODO	Easy
0190	Reverse Bits	TODO	Easy
0191	Number of 1 Bits	TODO	Easy
0192	Word Frequency	TODO	Medium
0193	Valid Phone Numbers	TODO	Easy
0194	Transpose File	TODO	Medium
0195	Tenth Line	TODO	Easy
0196	Delete Duplicate Emails	TODO	Easy
0197	Rising Temperature	TODO	Easy
0198	House Robber	Python	Easy
0199	Binary Tree Right Side View	TODO	Medium
0200	Number of Islands	TODO	Medium
0201	Bitwise AND of Numbers Range	TODO	Medium
0202	Happy Number	TODO	Easy
0203	Remove Linked List Elements	TODO	Easy
0204	Count Primes	TODO	Easy
0205	Isomorphic Strings	TODO	Easy
0206	Reverse Linked List	TODO	Easy
0207	Course Schedule	TODO	Medium
0208	Implement Trie (Prefix Tree)	TODO	Medium
0209	Minimum Size Subarray Sum	TODO	Medium
0210	Course Schedule II	TODO	Medium
0211	Add and Search Word - Data structure design	TODO	Medium
0212	Word Search II	TODO	Hard
0213	House Robber II	TODO	Medium
0214	Shortest Palindrome	TODO	Hard
0215	Kth Largest Element in an Array	TODO	Medium
0216	Combination Sum III	TODO	Medium
0217	Contains Duplicate	TODO	Easy
0218	The Skyline Problem	TODO	Hard
0219	Contains Duplicate II	TODO	Easy
0220	Contains Duplicate III	TODO	Medium
0221	Maximal Square	TODO	Medium
0222	Count Complete Tree Nodes	TODO	Medium
0223	Rectangle Area	TODO	Medium
0224	Basic Calculator	TODO	Hard
0225	Implement Stack using Queues	TODO	Easy
0226	Invert Binary Tree	TODO	Easy
0227	Basic Calculator II	TODO	Medium
0228	Summary Ranges	TODO	Medium
0229	Majority Element II	JavaScript	Medium
0230	Kth Smallest Element in a BST	TODO	Medium
0231	Power of Two	TODO	Easy
0232	Implement Queue using Stacks	TODO	Easy
0233	Number of Digit One	TODO	Hard
0234	Palindrome Linked List	TODO	Easy
0235	Lowest Common Ancestor of a Binary Search Tree	TODO	Easy
0236	Lowest Common Ancestor of a Binary Tree	TODO	Medium
0237	Delete Node in a Linked List	TODO	Easy
0238	Product of Array Except Self	TODO	Medium
0239	Sliding Window Maximum	TODO	Hard
0240	Search a 2D Matrix II	TODO	Medium
0241	Different Ways to Add Parentheses	TODO	Medium
0242	Valid Anagram	Python	Easy
0243	Shortest Word Distance	TODO	Easy
0244	Shortest Word Distance II	TODO	Medium
0245	Shortest Word Distance III	TODO	Medium
0246	Strobogrammatic Number	TODO	Easy
0247	Strobogrammatic Number II	TODO	Medium
0248	Strobogrammatic Number III	TODO	Hard
0249	Group Shifted Strings	TODO	Medium
0250	Count Univalue Subtrees	TODO	Medium
0251	Flatten 2D Vector	TODO	Medium
0252	Meeting Rooms	TODO	Easy
0253	Meeting Rooms II	TODO	Medium
0254	Factor Combinations	TODO	Medium
0255	Verify Preorder Sequence in Binary Search Tree	TODO	Medium
0256	Paint House	TODO	Easy
0257	Binary Tree Paths	TODO	Easy
0258	Add Digits	TODO	Easy
0259	3Sum Smaller	TODO	Medium
0260	Single Number III	Python	Medium
0261	Graph Valid Tree	TODO	Medium
0262	Trips and Users	TODO	Hard
0263	Ugly Number	TODO	Easy
0264	Ugly Number II	TODO	Medium
0265	Paint House II	TODO	Hard
0266	Palindrome Permutation	TODO	Easy
0267	Palindrome Permutation II	TODO	Medium
0268	Missing Number	TODO	Easy
0269	Alien Dictionary	TODO	Hard
0270	Closest Binary Search Tree Value	TODO	Easy
0271	Encode and Decode Strings	TODO	Medium
0272	Closest Binary Search Tree Value II	TODO	Hard
0273	Integer to English Words	TODO	Hard
0274	H-Index	TODO	Medium
0275	H-Index II	TODO	Medium
0276	Paint Fence	TODO	Easy
0277	Find the Celebrity	TODO	Medium
0278	First Bad Version	TODO	Easy
0279	Perfect Squares	TODO	Medium
0280	Wiggle Sort	TODO	Medium
0281	Zigzag Iterator	TODO	Medium
0282	Expression Add Operators	TODO	Hard
0283	Move Zeroes	TODO	Easy
0284	Peeking Iterator	TODO	Medium
0285	Inorder Successor in BST	TODO	Medium
0286	Walls and Gates	TODO	Medium
0287	Find the Duplicate Number	JavaScript	Medium
0288	Unique Word Abbreviation	TODO	Medium
0289	Game of Life	TODO	Medium
0290	Word Pattern	TODO	Easy
0291	Word Pattern II	TODO	Hard
0292	Nim Game	TODO	Easy
0293	Flip Game	TODO	Easy
0294	Flip Game II	TODO	Medium
0295	Find Median from Data Stream	TODO	Hard
0296	Best Meeting Point	TODO	Hard
0297	Serialize and Deserialize Binary Tree	TODO	Hard
0298	Binary Tree Longest Consecutive Sequence	TODO	Medium
0299	Bulls and Cows	TODO	Medium
0300	Longest Increasing Subsequence	TODO	Medium
0301	Remove Invalid Parentheses	TODO	Hard
0302	Smallest Rectangle Enclosing Black Pixels	TODO	Hard
0303	Range Sum Query - Immutable	TODO	Easy
0304	Range Sum Query 2D - Immutable	TODO	Medium
0305	Number of Islands II	TODO	Hard
0306	Additive Number	TODO	Medium
0307	Range Sum Query - Mutable	TODO	Medium
0308	Range Sum Query 2D - Mutable	TODO	Hard
0309	Best Time to Buy and Sell Stock with Cooldown	TODO	Medium
0310	Minimum Height Trees	TODO	Medium
0311	Sparse Matrix Multiplication	TODO	Medium
0312	Burst Balloons	TODO	Hard
0313	Super Ugly Number	TODO	Medium
0314	Binary Tree Vertical Order Traversal	TODO	Medium
0315	Count of Smaller Numbers After Self	TODO	Hard
0316	Remove Duplicate Letters	TODO	Hard
0317	Shortest Distance from All Buildings	TODO	Hard
0318	Maximum Product of Word Lengths	TODO	Medium
0319	Bulb Switcher	TODO	Medium
0320	Generalized Abbreviation	TODO	Medium
0321	Create Maximum Number	TODO	Hard
0322	Coin Change	TODO	Medium
0323	Number of Connected Components in an Undirected Graph	TODO	Medium
0324	Wiggle Sort II	TODO	Medium
0325	Maximum Size Subarray Sum Equals k	TODO	Medium
0326	Power of Three	Python	Easy
0327	Count of Range Sum	TODO	Hard
0328	Odd Even Linked List	TODO	Medium
0329	Longest Increasing Path in a Matrix	TODO	Hard
0330	Patching Array	TODO	Hard
0331	Verify Preorder Serialization of a Binary Tree	TODO	Medium
0332	Reconstruct Itinerary	TODO	Medium
0333	Largest BST Subtree	TODO	Medium
0334	Increasing Triplet Subsequence	TODO	Medium
0335	Self Crossing	TODO	Hard
0336	Palindrome Pairs	TODO	Hard
0337	House Robber III	TODO	Medium
0338	Counting Bits	Python	Medium
0339	Nested List Weight Sum	TODO	Easy
0340	Longest Substring with At Most K Distinct Characters	TODO	Hard
0341	Flatten Nested List Iterator	TODO	Medium
0342	Power of Four	TODO	Easy
0343	Integer Break	TODO	Medium
0344	Reverse String	TODO	Easy
0345	Reverse Vowels of a String	TODO	Easy
0346	Moving Average from Data Stream	TODO	Easy
0347	Top K Frequent Elements	TODO	Medium
0348	Design Tic-Tac-Toe	TODO	Medium
0349	Intersection of Two Arrays	TODO	Easy
0350	Intersection of Two Arrays II	JavaScript	Easy
0351	Android Unlock Patterns	TODO	Medium
0352	Data Stream as Disjoint Intervals	TODO	Hard
0353	Design Snake Game	TODO	Medium
0354	Russian Doll Envelopes	TODO	Hard
0355	Design Twitter	TODO	Medium
0356	Line Reflection	TODO	Medium
0357	Count Numbers with Unique Digits	TODO	Medium
0358	Rearrange String k Distance Apart	TODO	Hard
0359	Logger Rate Limiter	TODO	Easy
0360	Sort Transformed Array	TODO	Medium
0361	Bomb Enemy	TODO	Medium
0362	Design Hit Counter	TODO	Medium
0363	Max Sum of Rectangle No Larger Than K	TODO	Hard
0364	Nested List Weight Sum II	TODO	Medium
0365	Water and Jug Problem	TODO	Medium
0366	Find Leaves of Binary Tree	TODO	Medium
0367	Valid Perfect Square	TODO	Easy
0368	Largest Divisible Subset	TODO	Medium
0369	Plus One Linked List	TODO	Medium
0370	Range Addition	TODO	Medium
0371	Sum of Two Integers	TODO	Easy
0372	Super Pow	TODO	Medium
0373	Find K Pairs with Smallest Sums	TODO	Medium
0374	Guess Number Higher or Lower	TODO	Easy
0375	Guess Number Higher or Lower II	TODO	Medium
0376	Wiggle Subsequence	TODO	Medium
0377	Combination Sum IV	TODO	Medium
0378	Kth Smallest Element in a Sorted Matrix	TODO	Medium
0379	Design Phone Directory	TODO	Medium
0380	Insert Delete GetRandom O(1)	TODO	Medium
0381	Insert Delete GetRandom O(1) - Duplicates allowed	TODO	Hard
0382	Linked List Random Node	TODO	Medium
0383	Ransom Note	TODO	Easy
0384	Shuffle an Array	TODO	Medium
0385	Mini Parser	TODO	Medium
0386	Lexicographical Numbers	TODO	Medium
0387	First Unique Character in a String	TODO	Easy
0388	Longest Absolute File Path	TODO	Medium
0389	Find the Difference	TODO	Easy
0390	Elimination Game	TODO	Medium
0391	Perfect Rectangle	TODO	Hard
0392	Is Subsequence	TODO	Medium
0393	UTF-8 Validation	TODO	Medium
0394	Decode String	TODO	Medium
0395	Longest Substring with At Least K Repeating Characters	TODO	Medium
0396	Rotate Function	TODO	Medium
0397	Integer Replacement	TODO	Medium
0398	Random Pick Index	TODO	Medium
0399	Evaluate Division	TODO	Medium
0400	Nth Digit	TODO	Easy
0401	Binary Watch	TODO	Easy
0402	Remove K Digits	TODO	Medium
0403	Frog Jump	TODO	Hard
0404	Sum of Left Leaves	TODO	Easy
0405	Convert a Number to Hexadecimal	TODO	Easy
0406	Queue Reconstruction by Height	TODO	Medium
0407	Trapping Rain Water II	TODO	Hard
0408	Valid Word Abbreviation	TODO	Easy
0409	Longest Palindrome	TODO	Easy
0410	Split Array Largest Sum	TODO	Hard
0411	Minimum Unique Word Abbreviation	TODO	Hard
0412	Fizz Buzz	TODO	Easy
0413	Arithmetic Slices	TODO	Medium
0414	Third Maximum Number	Python	Easy
0415	Add Strings	TODO	Easy
0416	Partition Equal Subset Sum	TODO	Medium
0417	Pacific Atlantic Water Flow	TODO	Medium
0418	Sentence Screen Fitting	TODO	Medium
0419	Battleships in a Board	TODO	Medium
0420	Strong Password Checker	TODO	Hard
0421	Maximum XOR of Two Numbers in an Array	TODO	Medium
0422	Valid Word Square	TODO	Easy
0423	Reconstruct Original Digits from English	TODO	Medium
0424	Longest Repeating Character Replacement	TODO	Medium
0425	Word Squares	TODO	Hard
0432	All O`one Data Structure	TODO	Hard
0433	Minimum Genetic Mutation	TODO	Medium
0434	Number of Segments in a String	TODO	Easy
0435	Non-overlapping Intervals	TODO	Medium
0436	Find Right Interval	TODO	Medium
0437	Path Sum III	TODO	Easy
0438	Find All Anagrams in a String	TODO	Easy
0439	Ternary Expression Parser	TODO	Medium
0440	K-th Smallest in Lexicographical Order	TODO	Hard
0441	Arranging Coins	TODO	Easy
0442	Find All Duplicates in an Array	TODO	Medium
0443	String Compression	TODO	Easy
0444	Sequence Reconstruction	TODO	Medium
0445	Add Two Numbers II	TODO	Medium
0446	Arithmetic Slices II - Subsequence	TODO	Hard
0447	Number of Boomerangs	TODO	Easy
0448	Find All Numbers Disappeared in an Array	TODO	Easy
0449	Serialize and Deserialize BST	TODO	Medium
0450	Delete Node in a BST	TODO	Medium
0451	Sort Characters By Frequency	TODO	Medium
0452	Minimum Number of Arrows to Burst Balloons	TODO	Medium
0453	Minimum Moves to Equal Array Elements	TODO	Easy
0454	4Sum II	TODO	Medium
0455	Assign Cookies	TODO	Easy
0456	132 Pattern	TODO	Medium
0457	Circular Array Loop	TODO	Medium
0458	Poor Pigs	TODO	Easy
0459	Repeated Substring Pattern	TODO	Easy
0460	LFU Cache	TODO	Hard
0461	Hamming Distance	TODO	Easy
0462	Minimum Moves to Equal Array Elements II	TODO	Medium
0463	Island Perimeter	TODO	Easy
0464	Can I Win	TODO	Medium
0465	Optimal Account Balancing	TODO	Hard
0466	Count The Repetitions	TODO	Hard
0467	Unique Substrings in Wraparound String	TODO	Medium
0468	Validate IP Address	TODO	Medium
0469	Convex Polygon	TODO	Medium
0471	Encode String with Shortest Length	TODO	Hard
0472	Concatenated Words	TODO	Hard
0473	Matchsticks to Square	TODO	Medium
0474	Ones and Zeroes	TODO	Medium
0475	Heaters	TODO	Easy
0476	Number Complement	TODO	Easy
0477	Total Hamming Distance	TODO	Medium
0479	Largest Palindrome Product	TODO	Easy
0480	Sliding Window Median	TODO	Hard
0481	Magical String	TODO	Medium
0482	License Key Formatting	TODO	Easy
0483	Smallest Good Base	TODO	Hard
0484	Find Permutation	TODO	Medium
0485	Max Consecutive Ones	TODO	Easy
0486	Predict the Winner	TODO	Medium
0487	Max Consecutive Ones II	TODO	Medium
0488	Zuma Game	TODO	Hard
0490	The Maze	TODO	Medium
0491	Increasing Subsequences	TODO	Medium
0492	Construct the Rectangle	TODO	Easy
0493	Reverse Pairs	TODO	Hard
0494	Target Sum	TODO	Medium
0495	Teemo Attacking	TODO	Medium
0496	Next Greater Element I	TODO	Easy
0498	Diagonal Traverse	TODO	Medium
0499	The Maze III	TODO	Hard
0500	Keyboard Row	TODO	Easy
0501	Find Mode in Binary Search Tree	TODO	Easy
0502	IPO	TODO	Hard
0503	Next Greater Element II	TODO	Medium
0504	Base 7	TODO	Easy
0505	The Maze II	TODO	Medium
0506	Relative Ranks	TODO	Easy
0507	Perfect Number	TODO	Easy
0508	Most Frequent Subtree Sum	TODO	Medium
0513	Find Bottom Left Tree Value	TODO	Medium
0514	Freedom Trail	TODO	Hard
0515	Find Largest Value in Each Tree Row	TODO	Medium
0516	Longest Palindromic Subsequence	TODO	Medium
0517	Super Washing Machines	TODO	Hard
0518	Coin Change 2	TODO	Medium
0520	Detect Capital	TODO	Easy
0521	Longest Uncommon Subsequence I	TODO	Easy
0522	Longest Uncommon Subsequence II	TODO	Medium
0523	Continuous Subarray Sum	TODO	Medium
0524	Longest Word in Dictionary through Deleting	Python	Medium
0525	Contiguous Array	TODO	Medium
0526	Beautiful Arrangement	TODO	Medium
0527	Word Abbreviation	TODO	Hard
0529	Minesweeper	TODO	Medium
0530	Minimum Absolute Difference in BST	TODO	Easy
0531	Lonely Pixel I	TODO	Medium
0532	K-diff Pairs in an Array	TODO	Easy
0533	Lonely Pixel II	TODO	Medium
0535	Encode and Decode TinyURL	TODO	Medium
0536	Construct Binary Tree from String	TODO	Medium
0537	Complex Number Multiplication	TODO	Medium
0538	Convert BST to Greater Tree	TODO	Easy
0539	Minimum Time Difference	TODO	Medium
0540	Single Element in a Sorted Array	TODO	Medium
0541	Reverse String II	TODO	Easy
0542	01 Matrix	TODO	Medium
0543	Diameter of Binary Tree	TODO	Easy
0544	Output Contest Matches	TODO	Medium
0545	Boundary of Binary Tree	TODO	Medium
0546	Remove Boxes	TODO	Hard
0547	Friend Circles	TODO	Medium
0548	Split Array with Equal Sum	TODO	Medium
0549	Binary Tree Longest Consecutive Sequence II	TODO	Medium
0551	Student Attendance Record I	JavaScript	Easy
0552	Student Attendance Record II	TODO	Hard
0553	Optimal Division	TODO	Medium
0554	Brick Wall	TODO	Medium
0555	Split Concatenated Strings	TODO	Medium
0556	Next Greater Element III	TODO	Medium
0557	Reverse Words in a String III	TODO	Easy
0560	Subarray Sum Equals K	TODO	Medium
0561	Array Partition I	TODO	Easy
0562	Longest Line of Consecutive One in Matrix	TODO	Medium
0563	Binary Tree Tilt	TODO	Easy
0564	Find the Closest Palindrome	TODO	Hard
0565	Array Nesting	TODO	Medium
0566	Reshape the Matrix	TODO	Easy
0567	Permutation in String	TODO	Medium
0568	Maximum Vacation Days	TODO	Hard
0569	Median Employee Salary	TODO	Hard
0570	Managers with at Least 5 Direct Reports	TODO	Medium
0571	Find Median Given Frequency of Numbers	TODO	Hard
0572	Subtree of Another Tree	TODO	Easy
0573	Squirrel Simulation	TODO	Medium
0574	Winning Candidate	TODO	Medium
0575	Distribute Candies	TODO	Easy
0576	Out of Boundary Paths	TODO	Medium
0577	Employee Bonus	TODO	Easy
0578	Get Highest Answer Rate Question	TODO	Medium
0579	Find Cumulative Salary of an Employee	TODO	Hard
0580	Count Student Number in Departments	TODO	Medium
0581	Shortest Unsorted Continuous Subarray	TODO	Easy
0582	Kill Process	TODO	Medium
0583	Delete Operation for Two Strings	TODO	Medium
0584	Find Customer Referee	TODO	Easy
0585	Investments in 2016	TODO	Medium
0586	Customer Placing the Largest Number of Orders	TODO	Easy
0587	Erect the Fence	TODO	Hard
0588	Design In-Memory File System	TODO	Hard
0591	Tag Validator	TODO	Hard
0592	Fraction Addition and Subtraction	TODO	Medium
0593	Valid Square	TODO	Medium
0594	Longest Harmonious Subsequence	TODO	Easy
0595	Big Countries	TODO	Easy
0596	Classes More Than 5 Students	TODO	Easy
0597	Friend Requests I: Overall Acceptance Rate	TODO	Easy
0598	Range Addition II	TODO	Easy
0599	Minimum Index Sum of Two Lists	TODO	Easy
0600	Non-negative Integers without Consecutive Ones	TODO	Hard
0601	Human Traffic of Stadium	TODO	Hard
0602	Friend Requests II: Who Has the Most Friends	TODO	Medium
0603	Consecutive Available Seats	TODO	Easy
0604	Design Compressed String Iterator	TODO	Easy
0605	Can Place Flowers	TODO	Easy
0606	Construct String from Binary Tree	TODO	Easy
0607	Sales Person	TODO	Easy
0608	Tree Node	TODO	Medium
0609	Find Duplicate File in System	TODO	Medium
0610	Triangle Judgement	TODO	Easy
0611	Valid Triangle Number	TODO	Medium
0612	Shortest Distance in a Plane	TODO	Medium
0613	Shortest Distance in a Line	TODO	Easy
0614	Second Degree Follower	TODO	Medium
0615	Average Salary: Departments VS Company	TODO	Hard
0616	Add Bold Tag in String	TODO	Medium
0617	Merge Two Binary Trees	TODO	Easy
0618	Students Report By Geography	TODO	Hard
0619	Biggest Single Number	TODO	Easy
0620	Not Boring Movies	TODO	Easy
0621	Task Scheduler	TODO	Medium
0623	Add One Row to Tree	TODO	Medium
0624	Maximum Distance in Arrays	TODO	Easy
0625	Minimum Factorization	TODO	Medium
0626	Exchange Seats	TODO	Medium
0627	Swap Salary	TODO	Easy
0628	Maximum Product of Three Numbers	TODO	Easy
0629	K Inverse Pairs Array	TODO	Hard
0630	Course Schedule III	TODO	Hard
0631	Design Excel Sum Formula	TODO	Hard
0632	Smallest Range	TODO	Hard
0633	Sum of Square Numbers	TODO	Easy
0634	Find the Derangement of An Array	TODO	Medium
0635	Design Log Storage System	TODO	Medium
0636	Exclusive Time of Functions	TODO	Medium
0637	Average of Levels in Binary Tree	TODO	Easy
0638	Shopping Offers	TODO	Medium
0639	Decode Ways II	TODO	Hard
0640	Solve the Equation	TODO	Medium
0642	Design Search Autocomplete System	TODO	Hard
0643	Maximum Average Subarray I	TODO	Easy
0644	Maximum Average Subarray II	TODO	Hard
0645	Set Mismatch	TODO	Easy
0646	Maximum Length of Pair Chain	TODO	Medium
0647	Palindromic Substrings	TODO	Medium
0648	Replace Words	TODO	Medium
0649	Dota2 Senate	TODO	Medium
0650	2 Keys Keyboard	TODO	Medium
0651	4 Keys Keyboard	TODO	Medium
0652	Find Duplicate Subtrees	TODO	Medium
0653	Two Sum IV - Input is a BST	TODO	Easy
0654	Maximum Binary Tree	TODO	Medium
0655	Print Binary Tree	TODO	Medium
0656	Coin Path	TODO	Hard
0657	Robot Return to Origin	TODO	Easy
0658	Find K Closest Elements	TODO	Medium
0659	Split Array into Consecutive Subsequences	TODO	Medium
0660	Remove 9	TODO	Hard
0661	Image Smoother	TODO	Easy
0662	Maximum Width of Binary Tree	TODO	Medium
0663	Equal Tree Partition	TODO	Medium
0664	Strange Printer	TODO	Hard
0665	Non-decreasing Array	TODO	Easy
0666	Path Sum IV	TODO	Medium
0667	Beautiful Arrangement II	TODO	Medium
0668	Kth Smallest Number in Multiplication Table	TODO	Hard
0669	Trim a Binary Search Tree	TODO	Easy
0670	Maximum Swap	JavaScript	Medium
0671	Second Minimum Node In a Binary Tree	TODO	Easy
0672	Bulb Switcher II	TODO	Medium
0673	Number of Longest Increasing Subsequence	TODO	Medium
0674	Longest Continuous Increasing Subsequence	TODO	Easy
0675	Cut Off Trees for Golf Event	TODO	Hard
0676	Implement Magic Dictionary	TODO	Medium
0677	Map Sum Pairs	TODO	Medium
0678	Valid Parenthesis String	TODO	Medium
0679	24 Game	TODO	Hard
0680	Valid Palindrome II	TODO	Easy
0681	Next Closest Time	TODO	Medium
0682	Baseball Game	TODO	Easy
0683	K Empty Slots	TODO	Hard
0684	Redundant Connection	TODO	Medium
0685	Redundant Connection II	TODO	Hard
0686	Repeated String Match	JavaScript	Easy
0687	Longest Univalue Path	TODO	Easy
0688	Knight Probability in Chessboard	TODO	Medium
0689	Maximum Sum of 3 Non-Overlapping Subarrays	TODO	Hard
0690	Employee Importance	TODO	Easy
0691	Stickers to Spell Word	TODO	Hard
0692	Top K Frequent Words	TODO	Medium
0693	Binary Number with Alternating Bits	TODO	Easy
0694	Number of Distinct Islands	TODO	Medium
0695	Max Area of Island	TODO	Medium
0696	Count Binary Substrings	TODO	Easy
0697	Degree of an Array	TODO	Easy
0698	Partition to K Equal Sum Subsets	TODO	Medium
0699	Falling Squares	TODO	Hard
0711	Number of Distinct Islands II	TODO	Hard
0712	Minimum ASCII Delete Sum for Two Strings	TODO	Medium
0713	Subarray Product Less Than K	TODO	Medium
0714	Best Time to Buy and Sell Stock with Transaction Fee	TODO	Medium
0715	Range Module	TODO	Hard
0716	Max Stack	TODO	Easy
0717	1-bit and 2-bit Characters	TODO	Easy
0718	Maximum Length of Repeated Subarray	TODO	Medium
0719	Find K-th Smallest Pair Distance	TODO	Hard
0720	Longest Word in Dictionary	TODO	Easy
0721	Accounts Merge	TODO	Medium
0722	Remove Comments	TODO	Medium
0723	Candy Crush	TODO	Medium
0724	Find Pivot Index	TODO	Easy
0725	Split Linked List in Parts	TODO	Medium
0726	Number of Atoms	TODO	Hard
0727	Minimum Window Subsequence	TODO	Hard
0728	Self Dividing Numbers	TODO	Easy
0729	My Calendar I	TODO	Medium
0730	Count Different Palindromic Subsequences	TODO	Hard
0731	My Calendar II	TODO	Medium
0732	My Calendar III	TODO	Hard
0733	Flood Fill	TODO	Easy
0734	Sentence Similarity	TODO	Easy
0735	Asteroid Collision	TODO	Medium
0736	Parse Lisp Expression	TODO	Hard
0737	Sentence Similarity II	TODO	Medium
0738	Monotone Increasing Digits	TODO	Medium
0739	Daily Temperatures	TODO	Medium
0740	Delete and Earn	TODO	Medium
0741	Cherry Pickup	TODO	Hard
0742	To Lower Case	TODO	Easy
0743	Closest Leaf in a Binary Tree	TODO	Medium
0744	Network Delay Time	TODO	Easy
0745	Find Smallest Letter Greater Than Target	TODO	Easy
0746	Prefix and Suffix Search	TODO	Hard
0747	Min Cost Climbing Stairs	TODO	Easy
0748	Largest Number At Least Twice of Others	TODO	Easy
0749	Shortest Completing Word	TODO	Easy
0750	Contain Virus	TODO	Hard
0751	Number Of Corner Rectangles	TODO	Medium
0752	IP to CIDR	TODO	Easy
0753	Open the Lock	TODO	Medium
0754	Cracking the Safe	TODO	Hard
0755	Reach a Number	TODO	Easy
0756	Pour Water	TODO	Medium
0757	Pyramid Transition Matrix	TODO	Medium
0758	Convert Binary Search Tree to Sorted Doubly Linked List	TODO	Medium
0759	Set Intersection Size At Least Two	TODO	Hard
0760	Bold Words in String	TODO	Easy
0761	Employee Free Time	TODO	Hard
0762	Find Anagram Mappings	TODO	Easy
0763	Special Binary String	TODO	Hard
0764	N-ary Tree Level Order Traversal	TODO	Easy
0765	Serialize and Deserialize N-ary Tree	TODO	Hard
0766	Flatten a Multilevel Doubly Linked List	TODO	Medium
0767	Prime Number of Set Bits in Binary Representation	TODO	Easy
0768	Partition Labels	TODO	Medium
0769	Largest Plus Sign	TODO	Medium
0770	Couples Holding Hands	TODO	Hard
0771	Encode N-ary Tree to Binary Tree	TODO	Hard
0772	Construct Quad Tree	TODO	Easy
0773	Quad Tree Intersection	TODO	Easy
0774	Maximum Depth of N-ary Tree	TODO	Easy
0775	N-ary Tree Preorder Traversal	TODO	Easy
0776	N-ary Tree Postorder Traversal	TODO	Easy
0777	Toeplitz Matrix	TODO	Easy
0778	Reorganize String	TODO	Medium
0779	Max Chunks To Make Sorted II	TODO	Hard
0780	Max Chunks To Make Sorted	TODO	Medium
0781	Basic Calculator IV	TODO	Hard
0782	Jewels and Stones	TODO	Easy
0783	Search in a Binary Search Tree	TODO	Easy
0784	Insert into a Binary Search Tree	TODO	Medium
0785	Basic Calculator III	TODO	Hard
0786	Search in a Sorted Array of Unknown Size	TODO	Medium
0787	Sliding Puzzle	TODO	Hard
0788	Minimize Max Distance to Gas Station	TODO	Hard
0789	Kth Largest Element in a Stream	TODO	Easy
0790	Global and Local Inversions	TODO	Medium
0791	Split BST	TODO	Medium
0792	Binary Search	TODO	Easy
0793	Swap Adjacent in LR String	TODO	Medium
0794	Swim in Rising Water	TODO	Hard
0795	K-th Symbol in Grammar	TODO	Medium
0796	Reaching Points	TODO	Hard
0797	Rabbits in Forest	TODO	Medium
0798	Transform to Chessboard	TODO	Hard
0799	Minimum Distance Between BST Nodes	TODO	Easy
0800	Letter Case Permutation	TODO	Easy
0801	Is Graph Bipartite?	TODO	Medium
0802	K-th Smallest Prime Fraction	TODO	Hard
0803	Cheapest Flights Within K Stops	TODO	Medium
0804	Rotated Digits	TODO	Easy
0805	Escape The Ghosts	TODO	Medium
0806	Domino and Tromino Tiling	TODO	Medium
0807	Custom Sort String	TODO	Medium
0808	Number of Matching Subsequences	TODO	Medium
0809	Preimage Size of Factorial Zeroes Function	TODO	Hard
0810	Valid Tic-Tac-Toe State	TODO	Medium
0811	Number of Subarrays with Bounded Maximum	TODO	Medium
0812	Rotate String	TODO	Easy
0813	All Paths From Source to Target	TODO	Medium
0814	Smallest Rotation with Highest Score	TODO	Hard
0815	Champagne Tower	TODO	Medium
0816	Design HashSet	TODO	Easy
0817	Design HashMap	TODO	Easy
0818	Similar RGB Color	TODO	Easy
0819	Minimum Swaps To Make Sequences Increasing	TODO	Medium
0820	Find Eventual Safe States	TODO	Medium
0821	Bricks Falling When Hit	TODO	Hard
0822	Unique Morse Code Words	TODO	Easy
0823	Split Array With Same Average	TODO	Hard
0824	Number of Lines To Write String	TODO	Easy
0825	Max Increase to Keep City Skyline	TODO	Medium
0826	Soup Servings	TODO	Medium
0827	Expressive Words	TODO	Medium
0828	Chalkboard XOR Game	TODO	Hard
0829	Subdomain Visit Count	TODO	Easy
0830	Largest Triangle Area	TODO	Easy
0831	Largest Sum of Averages	TODO	Medium
0832	Binary Tree Pruning	TODO	Medium
0833	Bus Routes	TODO	Hard
0834	Ambiguous Coordinates	TODO	Medium
0835	Linked List Components	TODO	Medium
0836	Race Car	TODO	Hard
0837	Most Common Word	TODO	Easy
0838	Design Linked List	TODO	Easy
0839	Short Encoding of Words	TODO	Medium
0841	Shortest Distance to a Character	TODO	Easy
0842	Card Flipping Game	TODO	Medium
0843	Binary Trees With Factors	TODO	Medium
0850	Insert into a Cyclic Sorted List	TODO	Medium
0851	Goat Latin	TODO	Easy
0852	Friends Of Appropriate Ages	TODO	Medium
0853	Most Profit Assigning Work	TODO	Medium
0854	Making A Large Island	TODO	Hard
0855	Unique Letter String	TODO	Hard
0856	Consecutive Numbers Sum	TODO	Hard
0857	Positions of Large Groups	TODO	Easy
0858	Masking Personal Information	TODO	Medium
0859	Design Circular Deque	TODO	Medium
0860	Design Circular Queue	TODO	Medium
0861	Flipping an Image	TODO	Easy
0862	Find And Replace in String	TODO	Medium
0863	Sum of Distances in Tree	TODO	Hard
0864	Image Overlap	TODO	Medium
0865	Robot Room Cleaner	TODO	Hard
0866	Rectangle Overlap	TODO	Easy
0867	New 21 Game	TODO	Medium
0868	Push Dominoes	TODO	Medium
0869	Similar String Groups	TODO	Hard
0870	Magic Squares In Grid	TODO	Easy
0871	Keys and Rooms	TODO	Medium
0872	Split Array into Fibonacci Sequence	TODO	Medium
0873	Guess the Word	TODO	Hard
0874	Backspace String Compare	TODO	Easy
0875	Longest Mountain in Array	TODO	Medium
0876	Hand of Straights	TODO	Medium
0877	Shortest Path Visiting All Nodes	TODO	Hard
0878	Shifting Letters	TODO	Medium
0879	Maximize Distance to Closest Person	TODO	Easy
0880	Rectangle Area II	TODO	Hard
0881	Loud and Rich	TODO	Medium
0882	Peak Index in a Mountain Array	TODO	Easy
0883	Car Fleet	TODO	Medium
0884	K-Similar Strings	TODO	Hard
0885	Exam Room	TODO	Medium
0886	Score of Parentheses	TODO	Medium
0887	Minimum Cost to Hire K Workers	TODO	Hard
0888	Mirror Reflection	TODO	Medium
0889	Buddy Strings	TODO	Easy
0890	Lemonade Change	TODO	Easy
0891	Score After Flipping Matrix	TODO	Medium
0892	Shortest Subarray with Sum at Least K	TODO	Hard
0893	All Nodes Distance K in Binary Tree	TODO	Medium
0894	Random Pick with Blacklist	TODO	Hard
0895	Shortest Path to Get All Keys	TODO	Hard
0896	Smallest Subtree with all the Deepest Nodes	TODO	Medium
0897	Prime Palindrome	TODO	Medium
0898	Transpose Matrix	TODO	Easy
0899	Binary Gap	TODO	Easy
0900	Reordered Power of 2	TODO	Medium
0901	Advantage Shuffle	TODO	Medium
0902	Minimum Number of Refueling Stops	TODO	Hard
0903	Implement Rand10() Using Rand7()	TODO	Medium
0904	Leaf-Similar Trees	TODO	Easy
0905	Length of Longest Fibonacci Subsequence	TODO	Medium
0906	Walking Robot Simulation	TODO	Easy
0907	Koko Eating Bananas	TODO	Medium
0908	Middle of the Linked List	TODO	Easy
0909	Stone Game	TODO	Medium
0910	Nth Magical Number	TODO	Hard
0911	Profitable Schemes	TODO	Hard
0912	Random Pick with Weight	TODO	Medium
0913	Random Flip Matrix	TODO	Medium
0914	Random Point in Non-overlapping Rectangles	Python	Medium
0915	Generate Random Point in a Circle	TODO	Medium
0916	Decoded String at Index	TODO	Medium
0917	Boats to Save People	TODO	Medium
0918	Reachable Nodes In Subdivided Graph	TODO	Hard
0919	Projection Area of 3D Shapes	TODO	Easy
0920	Uncommon Words from Two Sentences	TODO	Easy
0921	Spiral Matrix III	TODO	Medium
0922	Possible Bipartition	TODO	Medium
0923	Super Egg Drop	TODO	Hard
0924	Fair Candy Swap	TODO	Easy
0925	Construct Binary Tree from Preorder and Postorder Traversal	TODO	Medium
0926	Find and Replace Pattern	TODO	Medium
0927	Sum of Subsequence Widths	TODO	Hard
0928	Surface Area of 3D Shapes	TODO	Easy
0929	Groups of Special-Equivalent Strings	TODO	Easy
0930	All Possible Full Binary Trees	TODO	Medium
0931	Maximum Frequency Stack	TODO	Hard
0932	Monotonic Array	TODO	Easy
0933	Increasing Order Search Tree	TODO	Easy
0934	Bitwise ORs of Subarrays	TODO	Medium
0935	Orderly Queue	TODO	Hard
0936	RLE Iterator	TODO	Medium
0937	Online Stock Span	TODO	Medium
0938	Numbers At Most N Given Digit Set	TODO	Hard
0939	Valid Permutations for DI Sequence	TODO	Hard
0940	Fruit Into Baskets	TODO	Medium
0941	Sort Array By Parity	TODO	Easy
0942	Super Palindromes	TODO	Hard
0943	Sum of Subarray Minimums	TODO	Medium
0944	Smallest Range I	TODO	Easy
0945	Snakes and Ladders	TODO	Medium
0946	Smallest Range II	TODO	Medium
0947	Online Election	TODO	Medium
0949	Cat and Mouse	TODO	Hard
0950	X of a Kind in a Deck of Cards	TODO	Easy
0951	Partition Array into Disjoint Intervals	TODO	Medium
0952	Word Subsets	TODO	Medium
0953	Reverse Only Letters	TODO	Easy
0954	Maximum Sum Circular Subarray	TODO	Medium
0955	Complete Binary Tree Inserter	TODO	Medium
0956	Number of Music Playlists	TODO	Hard
0957	Minimum Add to Make Parentheses Valid	TODO	Medium
0958	Sort Array By Parity II	TODO	Easy
0959	3Sum With Multiplicity	TODO	Medium
0960	Minimize Malware Spread	TODO	Hard
0961	Long Pressed Name	TODO	Easy
0962	Flip String to Monotone Increasing	TODO	Medium
0963	Three Equal Parts	TODO	Hard
0964	Minimize Malware Spread II	TODO	Hard
0965	Unique Email Addresses	TODO	Easy
0966	Binary Subarrays With Sum	TODO	Medium
0967	Minimum Falling Path Sum	TODO	Medium
0968	Beautiful Array	TODO	Medium
0969	Number of Recent Calls	TODO	Easy
0971	Shortest Bridge	TODO	Medium
0972	Knight Dialer	TODO	Medium
0973	Stamping The Sequence	TODO	Hard
0974	Reorder Log Files	TODO	Easy
0975	Range Sum of BST	TODO	Medium
0976	Minimum Area Rectangle	TODO	Medium
0977	Distinct Subsequences II	TODO	Hard
0978	Valid Mountain Array	TODO	Easy
0979	DI String Match	TODO	Easy
0980	Find the Shortest Superstring	TODO	Hard
0981	Delete Columns to Make Sorted	TODO	Easy
0982	Minimum Increment to Make Array Unique	TODO	Medium
0983	Validate Stack Sequences	TODO	Medium
0984	Most Stones Removed with Same Row or Column	TODO	Medium
0985	Bag of Tokens	TODO	Medium
0986	Largest Time for Given Digits	TODO	Easy
0987	Reveal Cards In Increasing Order	TODO	Medium
0988	Flip Equivalent Binary Trees	TODO	Medium
0989	Largest Component Size by Common Factor	TODO	Hard

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