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leetcode javascript实现

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目录

index	title	code	Difficulty
1	Two Sum	JavaScript	Easy
2	Add Two Numbers	JavaScript	Medium
3	Longest Substring Without Repeating Characters	JavaScript	Medium
4	Median of Two Sorted Arrays	JavaScript	Hard
5	Longest Palindromic Substring	JavaScript	Medium
6	ZigZag Conversion	JavaScript	Medium
7	Reverse Integer	JavaScript	Easy
8	String to Integer (atoi)	JavaScript	Medium
9	Palindrome Number	JavaScript	Easy
10	Regular Expression Matching	JavaScript	Hard
11	Container With Most Water	JavaScript	Medium
12	Integer to Roman	JavaScript	Medium
13	Roman to Integer	JavaScript	Easy
14	Longest Common Prefix	JavaScript	Easy
15	3Sum	JavaScript	Medium
16	3Sum Closest	JavaScript	Medium
17	Letter Combinations of a Phone Number	JavaScript	Medium
18	4Sum	JavaScript	Medium
19	Remove Nth Node From End of List	JavaScript	Medium
20	Valid Parentheses	JavaScript	Easy
21	Merge Two Sorted Lists	JavaScript	Easy
22	Generate Parentheses	JavaScript	Medium
23	Merge k Sorted Lists	JavaScript	Hard
24	Swap Nodes in Pairs	JavaScript	Medium
25	Reverse Nodes in k-Group	JavaScript	Hard
26	Remove Duplicates from Sorted Array	JavaScript	Easy
27	Remove Element	JavaScript	Easy
28	Implement strStr()	JavaScript	Easy
29	Divide Two Integers	JavaScript	Medium
30	Substring with Concatenation of All Words		Hard
31	Next Permutation	JavaScript	Medium
32	Longest Valid Parentheses	JavaScript	Hard
33	Search in Rotated Sorted Array	JavaScript	Medium
34	Find First and Last Position of Element in Sorted Array	JavaScript	Medium
35	Search Insert Position	JavaScript	Easy
36	Valid Sudoku	JavaScript	Medium
37	Sudoku Solver		Hard
38	Count and Say	JavaScript	Easy
39	Combination Sum	JavaScript	Medium
40	Combination Sum II	JavaScript	Medium
41	First Missing Positive	JavaScript	Hard
42	Trapping Rain Water		Hard
43	Multiply Strings	JavaScript	Medium
44	Wildcard Matching	JavaScript	Hard
45	Jump Game II	JavaScript	Hard
46	Permutations	JavaScript	Medium
47	Permutations II	JavaScript	Medium
48	Rotate Image	JavaScript	Medium
49	Group Anagrams	JavaScript	Medium
50	Pow(x, n)	JavaScript	Medium
51	N-Queens		Hard
52	N-Queens II		Hard
53	Maximum Subarray	JavaScript	Easy
54	Spiral Matrix	JavaScript	Medium
55	Jump Game	JavaScript	Medium
56	Merge Intervals	JavaScript	Medium
57	Insert Interval	JavaScript	Hard
58	Length of Last Word	JavaScript	Easy
59	Spiral Matrix II	JavaScript	Medium
60	Permutation Sequence	JavaScript	Medium
61	Rotate List	JavaScript	Medium
62	Unique Paths		Medium
63	Unique Paths II	JavaScript	Medium
64	Minimum Path Sum	JavaScript	Medium
65	Valid Number	JavaScript	Hard
66	Plus One	JavaScript	Easy
67	Add Binary	JavaScript	Easy
68	Text Justification		Hard
69	Sqrt(x)	JavaScript	Easy
70	Climbing Stairs	JavaScript	Easy
71	Simplify Path	JavaScript	Medium
72	Edit Distance		Hard
73	Set Matrix Zeroes	JavaScript	Medium
74	Search a 2D Matrix	JavaScript	Medium
75	Sort Colors	JavaScript	Medium
76	Minimum Window Substring	JavaScript	Hard
77	Combinations	JavaScript	Medium
78	Subsets	JavaScript	Medium
79	Word Search	JavaScript	Medium
80	Remove Duplicates from Sorted Array II	JavaScript	Medium
81	Search in Rotated Sorted Array II	JavaScript	Medium
82	Remove Duplicates from Sorted List II	JavaScript	Medium
83	Remove Duplicates from Sorted List	JavaScript	Easy
84	Largest Rectangle in Histogram		Hard
85	Maximal Rectangle		Hard
86	Partition List	JavaScript	Medium
87	Scramble String		Hard
88	Merge Sorted Array	JavaScript	Easy
89	Gray Code	JavaScript	Medium
90	Subsets II	JavaScript	Medium
91	Decode Ways	JavaScript	Medium
92	Reverse Linked List II	JavaScript	Medium
93	Restore IP Addresses	JavaScript	Medium
94	Binary Tree Inorder Traversal	JavaScript	Medium
95	Unique Binary Search Trees II	JavaScript	Medium
96	Unique Binary Search Trees	JavaScript	Medium
97	Interleaving String	JavaScript	Hard
98	Validate Binary Search Tree	JavaScript	Medium
99	Recover Binary Search Tree	JavaScript	Hard
100	Same Tree	JavaScript	Easy
101	Symmetric Tree	JavaScript	Easy
102	Binary Tree Level Order Traversal	JavaScript	Medium
103	Binary Tree Zigzag Level Order Traversal	JavaScript	Medium
104	Maximum Depth of Binary Tree	JavaScript	Easy
105	Construct Binary Tree from Preorder and Inorder Traversal	JavaScript	Medium
106	Construct Binary Tree from Inorder and Postorder Traversal	JavaScript	Medium
107	Binary Tree Level Order Traversal II	JavaScript	Easy
108	Convert Sorted Array to Binary Search Tree	JavaScript	Easy
109	Convert Sorted List to Binary Search Tree	JavaScript	Medium
110	Balanced Binary Tree	JavaScript	Easy
111	Minimum Depth of Binary Tree	JavaScript	Easy
112	Path Sum	JavaScript	Easy
113	Path Sum II	JavaScript	Medium
114	Flatten Binary Tree to Linked List	JavaScript	Medium
115	Distinct Subsequences	JavaScript	Hard
116	Populating Next Right Pointers in Each Node	JavaScript	Medium
117	Populating Next Right Pointers in Each Node II	JavaScript	Medium
118	Pascal's Triangle	JavaScript	Easy
119	Pascal's Triangle II	JavaScript	Easy
120	Triangle	JavaScript	Medium
121	Best Time to Buy and Sell Stock	JavaScript	Easy
122	Best Time to Buy and Sell Stock II	JavaScript	Easy
123	Best Time to Buy and Sell Stock III	JavaScript	Hard
124	Binary Tree Maximum Path Sum	JavaScript	Hard
125	Valid Palindrome	JavaScript	Easy
126	Word Ladder II		Hard
127	Word Ladder		Medium
128	Longest Consecutive Sequence	JavaScript	Hard
129	Sum Root to Leaf Numbers	JavaScript	Medium
130	Surrounded Regions	JavaScript	Medium
131	Palindrome Partitioning	JavaScript	Medium
132	Palindrome Partitioning II	JavaScript	Hard
133	Clone Graph	JavaScript	Medium
134	Gas Station	JavaScript	Medium
135	Candy		Hard
136	Single Number	JavaScript	Easy
137	Single Number II	JavaScript	Medium
138	Copy List with Random Pointer	JavaScript	Medium
139	Word Break	JavaScript	Medium
140	Word Break II	JavaScript	Hard
141	Linked List Cycle	JavaScript	Easy
142	Linked List Cycle II	JavaScript	Medium
143	Reorder List	JavaScript	Medium
144	Binary Tree Preorder Traversal	JavaScript	Medium
145	Binary Tree Postorder Traversal	JavaScript	Hard
146	LRU Cache	JavaScript	Medium
147	Insertion Sort List	JavaScript	Medium
148	Sort List	JavaScript	Medium
149	Max Points on a Line		Hard
150	Evaluate Reverse Polish Notation	JavaScript	Medium
151	Reverse Words in a String	JavaScript	Medium
152	Maximum Product Subarray	JavaScript	Medium
153	Find Minimum in Rotated Sorted Array	JavaScript	Medium
154	Find Minimum in Rotated Sorted Array II	JavaScript	Hard
155	Min Stack	JavaScript	Easy
156	Binary Tree Upside Down		Medium
157	Read N Characters Given Read4		Easy
158	Read N Characters Given Read4 II - Call multiple times		Hard
159	Longest Substring with At Most Two Distinct Characters		Medium
160	Intersection of Two Linked Lists	JavaScript	Easy
161	One Edit Distance		Medium
162	Find Peak Element	JavaScript	Medium
163	Missing Ranges		Medium
164	Maximum Gap		Hard
165	Compare Version Numbers	JavaScript	Medium
166	Fraction to Recurring Decimal	JavaScript	Medium
167	Two Sum II - Input array is sorted	JavaScript	Easy
168	Excel Sheet Column Title	JavaScript	Easy
169	Majority Element	JavaScript	Easy
170	Two Sum III - Data structure design		Easy
171	Excel Sheet Column Number	JavaScript	Easy
172	Factorial Trailing Zeroes	JavaScript	Easy
173	Binary Search Tree Iterator	JavaScript	Medium
174	Dungeon Game		Hard
175	Combine Two Tables	Mysql	Easy
176	Second Highest Salary	Mysql	Easy
177	Nth Highest Salary	Mysql	Medium
178	Rank Scores	Mysql	Medium
179	Largest Number	JavaScript	Medium
180	Consecutive Numbers	Mysql	Medium
181	Employees Earning More Than Their Managers	Mysql	Easy
182	Duplicate Emails	Mysql	Easy
183	Customers Who Never Order	Mysql	Easy
184	Department Highest Salary	Mysql	Medium
185	Department Top Three Salaries		Hard
186	Reverse Words in a String II		Medium
187	Repeated DNA Sequences	JavaScript	Medium
188	Best Time to Buy and Sell Stock IV	JavaScript	Hard
189	Rotate Array	JavaScript	Easy
190	Reverse Bits	JavaScript	Easy
191	Number of 1 Bits	JavaScript	Easy
192	Word Frequency		Medium
193	Valid Phone Numbers		Easy
194	Transpose File		Medium
195	Tenth Line		Easy
196	Delete Duplicate Emails	Mysql	Easy
197	Rising Temperature	Mysql	Easy
198	House Robber	JavaScript	Easy
199	Binary Tree Right Side View	JavaScript	Medium
200	Number of Islands	JavaScript	Medium
201	Bitwise AND of Numbers Range	JavaScript	Medium
202	Happy Number	JavaScript	Easy
203	Remove Linked List Elements	JavaScript	Easy
204	Count Primes	JavaScript	Easy
205	Isomorphic Strings	JavaScript	Easy
206	Reverse Linked List	JavaScript	Easy
207	Course Schedule	JavaScript	Medium
208	Implement Trie (Prefix Tree)	JavaScript	Medium
209	Minimum Size Subarray Sum	JavaScript	Medium
210	Course Schedule II		Medium
211	Add and Search Word - Data structure design	JavaScript	Medium
212	Word Search II		Hard
213	House Robber II	JavaScript	Medium
214	Shortest Palindrome		Hard
215	Kth Largest Element in an Array	JavaScript	Medium
216	Combination Sum III	JavaScript	Medium
217	Contains Duplicate	JavaScript	Easy
218	The Skyline Problem		Hard
219	Contains Duplicate II	JavaScript	Easy
220	Contains Duplicate III	JavaScript	Medium
221	Maximal Square	JavaScript	Medium
222	Count Complete Tree Nodes	JavaScript	Medium
223	Rectangle Area	JavaScript	Medium
224	Basic Calculator		Hard
225	Implement Stack using Queues	JavaScript	Easy
226	Invert Binary Tree	JavaScript	Easy
227	Basic Calculator II		Medium
228	Summary Ranges	JavaScript	Medium
229	Majority Element II	JavaScript	Medium
230	Kth Smallest Element in a BST	JavaScript	Medium
231	Power of Two	JavaScript	Easy
232	Implement Queue using Stacks	JavaScript	Easy
233	Number of Digit One	JavaScript	Hard
234	Palindrome Linked List	JavaScript	Easy
235	Lowest Common Ancestor of a Binary Search Tree	JavaScript	Easy
236	Lowest Common Ancestor of a Binary Tree	JavaScript	Medium
237	Delete Node in a Linked List	JavaScript	Easy
238	Product of Array Except Self	JavaScript	Medium
239	Sliding Window Maximum	JavaScript	Hard
240	Search a 2D Matrix II	JavaScript	Medium
241	Different Ways to Add Parentheses		Medium
242	Valid Anagram	JavaScript	Easy
243	Shortest Word Distance		Easy
244	Shortest Word Distance II		Medium
245	Shortest Word Distance III		Medium
246	Strobogrammatic Number		Easy
247	Strobogrammatic Number II		Medium
248	Strobogrammatic Number III		Hard
249	Group Shifted Strings		Medium
250	Count Univalue Subtrees		Medium
251	Flatten 2D Vector		Medium
252	Meeting Rooms		Easy
253	Meeting Rooms II		Medium
254	Factor Combinations		Medium
255	Verify Preorder Sequence in Binary Search Tree		Medium
256	Paint House		Easy
257	Binary Tree Paths	JavaScript	Easy
258	Add Digits	JavaScript	Easy
259	3Sum Smaller		Medium
260	Single Number III	JavaScript	Medium
261	Graph Valid Tree		Medium
262	Trips and Users		Hard
263	Ugly Number	JavaScript	Easy
264	Ugly Number II	JavaScript	Medium
265	Paint House II		Hard
266	Palindrome Permutation		Easy
267	Palindrome Permutation II		Medium
268	Missing Number	JavaScript	Easy
269	Alien Dictionary		Hard
270	Closest Binary Search Tree Value		Easy
271	Encode and Decode Strings		Medium
272	Closest Binary Search Tree Value II		Hard
273	Integer to English Words	JavaScript	Hard
274	H-Index	JavaScript	Medium
275	H-Index II	JavaScript	Medium
276	Paint Fence		Easy
277	Find the Celebrity		Medium
278	First Bad Version	JavaScript	Easy
279	Perfect Squares	JavaScript	Medium
280	Wiggle Sort		Medium
281	Zigzag Iterator		Medium
282	Expression Add Operators		Hard
283	Move Zeroes	JavaScript	Easy
284	Peeking Iterator	Python3	Medium
285	Inorder Successor in BST		Medium
286	Walls and Gates		Medium
287	Find the Duplicate Number		Medium
288	Unique Word Abbreviation		Medium
289	Game of Life	JavaScript	Medium
290	Word Pattern	JavaScript	Easy
291	Word Pattern II		Hard
292	Nim Game	JavaScript	Easy
293	Flip Game		Easy
294	Flip Game II		Medium
295	Find Median from Data Stream	JavaScript	Hard
296	Best Meeting Point		Hard
297	Serialize and Deserialize Binary Tree	JavaScript	Hard
298	Binary Tree Longest Consecutive Sequence		Medium
299	Bulls and Cows	JavaScript	Easy
300	Longest Increasing Subsequence	JavaScript	Medium
301	Remove Invalid Parentheses		Hard
302	Smallest Rectangle Enclosing Black Pixels		Hard
303	Range Sum Query - Immutable	JavaScript	Easy
304	Range Sum Query 2D - Immutable	JavaScript	Medium
305	Number of Islands II		Hard
306	Additive Number	JavaScript	Medium
307	Range Sum Query - Mutable	JavaScript	Medium
308	Range Sum Query 2D - Mutable		Hard
309	Best Time to Buy and Sell Stock with Cooldown	JavaScript	Medium
310	Minimum Height Trees		Medium
311	Sparse Matrix Multiplication		Medium
312	Burst Balloons		Hard
313	Super Ugly Number	JavaScript	Medium
314	Binary Tree Vertical Order Traversal		Medium
315	Count of Smaller Numbers After Self	JavaScript	Hard
316	Remove Duplicate Letters		Hard
317	Shortest Distance from All Buildings		Hard
318	Maximum Product of Word Lengths	JavaScript	Medium
319	Bulb Switcher	JavaScript	Medium
320	Generalized Abbreviation		Medium
321	Create Maximum Number		Hard
322	Coin Change	JavaScript	Medium
323	Number of Connected Components in an Undirected Graph		Medium
324	Wiggle Sort II		Medium
325	Maximum Size Subarray Sum Equals k		Medium
326	Power of Three	JavaScript	Easy
327	Count of Range Sum		Hard
328	Odd Even Linked List	JavaScript	Medium
329	Longest Increasing Path in a Matrix	JavaScript	Hard
330	Patching Array		Hard
331	Verify Preorder Serialization of a Binary Tree	JavaScript	Medium
332	Reconstruct Itinerary		Medium
333	Largest BST Subtree		Medium
334	Increasing Triplet Subsequence	JavaScript	Medium
335	Self Crossing		Hard
336	Palindrome Pairs		Hard
337	House Robber III	JavaScript	Medium
338	Counting Bits	JavaScript	Medium
339	Nested List Weight Sum		Easy
340	Longest Substring with At Most K Distinct Characters		Hard
341	Flatten Nested List Iterator	JavaScript	Medium
342	Power of Four	JavaScript	Easy
343	Integer Break	JavaScript	Medium
344	Reverse String	JavaScript	Easy
345	Reverse Vowels of a String	JavaScript	Easy
346	Moving Average from Data Stream		Easy
347	Top K Frequent Elements	JavaScript	Medium
348	Design Tic-Tac-Toe		Medium
349	Intersection of Two Arrays	JavaScript	Easy
350	Intersection of Two Arrays II	JavaScript	Easy
351	Android Unlock Patterns		Medium
352	Data Stream as Disjoint Intervals	JavaScript	Hard
353	Design Snake Game		Medium
354	Russian Doll Envelopes		Hard
355	Design Twitter		Medium
356	Line Reflection		Medium
357	Count Numbers with Unique Digits	JavaScript	Medium
358	Rearrange String k Distance Apart		Hard
359	Logger Rate Limiter		Easy
360	Sort Transformed Array		Medium
361	Bomb Enemy		Medium
362	Design Hit Counter		Medium
363	Max Sum of Rectangle No Larger Than K		Hard
364	Nested List Weight Sum II		Medium
365	Water and Jug Problem		Medium
366	Find Leaves of Binary Tree		Medium
367	Valid Perfect Square	JavaScript	Easy
368	Largest Divisible Subset		Medium
369	Plus One Linked List		Medium
370	Range Addition		Medium
371	Sum of Two Integers	JavaScript	Easy
372	Super Pow	JavaScript	Medium
373	Find K Pairs with Smallest Sums	JavaScript	Medium
374	Guess Number Higher or Lower	Python3	Easy
375	Guess Number Higher or Lower II	JavaScript	Medium
376	Wiggle Subsequence	JavaScript	Medium
377	Combination Sum IV	JavaScript	Medium
378	Kth Smallest Element in a Sorted Matrix	JavaScript	Medium
379	Design Phone Directory		Medium
380	Insert Delete GetRandom O(1)	JavaScript	Medium
381	Insert Delete GetRandom O(1) - Duplicates allowed	JavaScript	Hard
382	Linked List Random Node	JavaScript	Medium
383	Ransom Note	JavaScript	Easy
384	Shuffle an Array	JavaScript	Medium
385	Mini Parser	JavaScript	Medium
386	Lexicographical Numbers	JavaScript	Medium
387	First Unique Character in a String	JavaScript	Easy
388	Longest Absolute File Path	JavaScript	Medium
389	Find the Difference	JavaScript	Easy
390	Elimination Game		Medium
391	Perfect Rectangle		Hard
392	Is Subsequence	JavaScript	Easy
393	UTF-8 Validation	JavaScript	Medium
394	Decode String	JavaScript	Medium
395	Longest Substring with At Least K Repeating Characters	JavaScript	Medium
396	Rotate Function	JavaScript	Medium
397	Integer Replacement	JavaScript	Medium
398	Random Pick Index	JavaScript	Medium
399	Evaluate Division		Medium
400	Nth Digit	JavaScript	Medium
401	Binary Watch	JavaScript	Easy
402	Remove K Digits		Medium
403	Frog Jump	JavaScript	Hard
404	Sum of Left Leaves	JavaScript	Easy
405	Convert a Number to Hexadecimal	JavaScript	Easy
406	Queue Reconstruction by Height		Medium
407	Trapping Rain Water II		Hard
408	Valid Word Abbreviation		Easy
409	Longest Palindrome	JavaScript	Easy
410	Split Array Largest Sum	JavaScript	Hard
411	Minimum Unique Word Abbreviation		Hard
412	Fizz Buzz	JavaScript	Easy
413	Arithmetic Slices	JavaScript	Medium
414	Third Maximum Number	JavaScript	Easy
415	Add Strings	JavaScript	Easy
416	Partition Equal Subset Sum	JavaScript	Medium
417	Pacific Atlantic Water Flow	JavaScript	Medium
418	Sentence Screen Fitting		Medium
419	Battleships in a Board	JavaScript	Medium
420	Strong Password Checker		Hard
421	Maximum XOR of Two Numbers in an Array	JavaScript	Medium
422	Valid Word Square		Easy
423	Reconstruct Original Digits from English	JavaScript	Medium
424	Longest Repeating Character Replacement		Medium
425	Word Squares		Hard
426	Convert Binary Search Tree to Sorted Doubly Linked List		Medium
427	Construct Quad Tree	JavaScript	Medium
428	Serialize and Deserialize N-ary Tree		Hard
429	N-ary Tree Level Order Traversal	JavaScript	Medium
430	Flatten a Multilevel Doubly Linked List	JavaScript	Medium
431	Encode N-ary Tree to Binary Tree		Hard
432	All O`one Data Structure	JavaScript	Hard
433	Minimum Genetic Mutation	JavaScript	Medium
434	Number of Segments in a String	JavaScript	Easy
435	Non-overlapping Intervals	JavaScript	Medium
436	Find Right Interval	JavaScript	Medium
437	Path Sum III	JavaScript	Easy
438	Find All Anagrams in a String	JavaScript	Medium
439	Ternary Expression Parser		Medium
440	K-th Smallest in Lexicographical Order		Hard
441	Arranging Coins	JavaScript	Easy
442	Find All Duplicates in an Array	JavaScript	Medium
443	String Compression		Easy
444	Sequence Reconstruction		Medium
445	Add Two Numbers II	JavaScript	Medium
446	Arithmetic Slices II - Subsequence	JavaScript	Hard
447	Number of Boomerangs	JavaScript	Easy
448	Find All Numbers Disappeared in an Array	JavaScript	Easy
449	Serialize and Deserialize BST	JavaScript	Medium
450	Delete Node in a BST	JavaScript	Medium
451	Sort Characters By Frequency	JavaScript	Medium
452	Minimum Number of Arrows to Burst Balloons		Medium
453	Minimum Moves to Equal Array Elements		Easy
454	4Sum II	JavaScript	Medium
455	Assign Cookies	JavaScript	Easy
456	132 Pattern		Medium
457	Circular Array Loop		Medium
458	Poor Pigs		Hard
459	Repeated Substring Pattern	JavaScript	Easy
460	LFU Cache		Hard
461	Hamming Distance	JavaScript	Easy
462	Minimum Moves to Equal Array Elements II		Medium
463	Island Perimeter	JavaScript	Easy
464	Can I Win		Medium
465	Optimal Account Balancing		Hard
466	Count The Repetitions		Hard
467	Unique Substrings in Wraparound String		Medium
468	Validate IP Address	JavaScript	Medium
469	Convex Polygon		Medium
470	Implement Rand10() Using Rand7()		Medium
471	Encode String with Shortest Length		Hard
472	Concatenated Words		Hard
473	Matchsticks to Square		Medium
474	Ones and Zeroes	JavaScript	Medium
475	Heaters	JavaScript	Easy
476	Number Complement	JavaScript	Easy
477	Total Hamming Distance	JavaScript	Medium
478	Generate Random Point in a Circle	JavaScript	Medium
479	Largest Palindrome Product		Hard
480	Sliding Window Median	JavaScript	Hard
481	Magical String		Medium
482	License Key Formatting	JavaScript	Easy
483	Smallest Good Base		Hard
484	Find Permutation		Medium
485	Max Consecutive Ones	JavaScript	Easy
486	Predict the Winner	JavaScript	Medium
487	Max Consecutive Ones II		Medium
488	Zuma Game		Hard
489	Robot Room Cleaner		Hard
490	The Maze		Medium
491	Increasing Subsequences	JavaScript	Medium
492	Construct the Rectangle	JavaScript	Easy
493	Reverse Pairs	JavaScript	Hard
494	Target Sum	JavaScript	Medium
495	Teemo Attacking	JavaScript	Medium
496	Next Greater Element I	JavaScript	Easy
497	Random Point in Non-overlapping Rectangles	JavaScript	Medium
498	Diagonal Traverse	JavaScript	Medium
499	The Maze III		Hard
500	Keyboard Row	JavaScript	Easy
501	Find Mode in Binary Search Tree	JavaScript	Easy
502	IPO		Hard
503	Next Greater Element II	JavaScript	Medium
504	Base 7	JavaScript	Easy
505	The Maze II		Medium
506	Relative Ranks	JavaScript	Easy
507	Perfect Number	JavaScript	Easy
508	Most Frequent Subtree Sum	JavaScript	Medium
509	Fibonacci Number	JavaScript	Easy
510	Inorder Successor in BST II		Medium
511	Game Play Analysis I		Easy
512	Game Play Analysis II		Easy
513	Find Bottom Left Tree Value	JavaScript	Medium
514	Freedom Trail		Hard
515	Find Largest Value in Each Tree Row	JavaScript	Medium
516	Longest Palindromic Subsequence		Medium
517	Super Washing Machines		Hard
518	Coin Change 2	JavaScript	Medium
519	Random Flip Matrix	JavaScript	Medium
520	Detect Capital	JavaScript	Easy
521	Longest Uncommon Subsequence I	JavaScript	Easy
522	Longest Uncommon Subsequence II	JavaScript	Medium
523	Continuous Subarray Sum	JavaScript	Medium
524	Longest Word in Dictionary through Deleting	JavaScript	Medium
525	Contiguous Array	JavaScript	Medium
526	Beautiful Arrangement	JavaScript	Medium
527	Word Abbreviation		Hard
528	Random Pick with Weight	JavaScript	Medium
529	Minesweeper	JavaScript	Medium
530	Minimum Absolute Difference in BST	JavaScript	Easy
531	Lonely Pixel I		Medium
532	K-diff Pairs in an Array	JavaScript	Easy
533	Lonely Pixel II		Medium
534	Game Play Analysis III		Medium
535	Encode and Decode TinyURL	JavaScript	Medium
536	Construct Binary Tree from String		Medium
537	Complex Number Multiplication	JavaScript	Medium
538	Convert BST to Greater Tree	JavaScript	Easy
539	Minimum Time Difference	JavaScript	Medium
540	Single Element in a Sorted Array	JavaScript	Medium
541	Reverse String II	JavaScript	Easy
542	01 Matrix	JavaScript	Medium
543	Diameter of Binary Tree	JavaScript	Easy
544	Output Contest Matches		Medium
545	Boundary of Binary Tree		Medium
546	Remove Boxes		Hard
547	Friend Circles	JavaScript	Medium
548	Split Array with Equal Sum		Medium
549	Binary Tree Longest Consecutive Sequence II		Medium
550	Game Play Analysis IV		Medium
551	Student Attendance Record I	JavaScript	Easy
552	Student Attendance Record II	JavaScript	Hard
553	Optimal Division		Medium
554	Brick Wall	JavaScript	Medium
555	Split Concatenated Strings		Medium
556	Next Greater Element III	JavaScript	Medium
557	Reverse Words in a String III	JavaScript	Easy
558	Quad Tree Intersection	JavaScript	Easy
559	Maximum Depth of N-ary Tree	JavaScript	Easy
560	Subarray Sum Equals K	JavaScript	Medium
561	Array Partition I	JavaScript	Easy
562	Longest Line of Consecutive One in Matrix		Medium
563	Binary Tree Tilt	JavaScript	Easy
564	Find the Closest Palindrome		Hard
565	Array Nesting	JavaScript	Medium
566	Reshape the Matrix	JavaScript	Easy
567	Permutation in String	JavaScript	Medium
568	Maximum Vacation Days		Hard
569	Median Employee Salary		Hard
570	Managers with at Least 5 Direct Reports		Medium
571	Find Median Given Frequency of Numbers		Hard
572	Subtree of Another Tree	JavaScript	Easy
573	Squirrel Simulation		Medium
574	Winning Candidate		Medium
575	Distribute Candies	JavaScript	Easy
576	Out of Boundary Paths	JavaScript	Medium
577	Employee Bonus		Easy
578	Get Highest Answer Rate Question		Medium
579	Find Cumulative Salary of an Employee		Hard
580	Count Student Number in Departments		Medium
581	Shortest Unsorted Continuous Subarray	JavaScript	Easy
582	Kill Process		Medium
583	Delete Operation for Two Strings	JavaScript	Medium
584	Find Customer Referee		Easy
585	Investments in 2016		Medium
586	Customer Placing the Largest Number of Orders		Easy
587	Erect the Fence		Hard
588	Design In-Memory File System		Hard
589	N-ary Tree Preorder Traversal	JavaScript	Easy
590	N-ary Tree Postorder Traversal	JavaScript	Easy
591	Tag Validator		Hard
592	Fraction Addition and Subtraction	JavaScript	Medium
593	Valid Square	JavaScript	Medium
594	Longest Harmonious Subsequence	JavaScript	Easy
595	Big Countries	Mysql	Easy
596	Classes More Than 5 Students	Mysql	Easy
597	Friend Requests I: Overall Acceptance Rate		Easy
598	Range Addition II	JavaScript	Easy
599	Minimum Index Sum of Two Lists	JavaScript	Easy
600	Non-negative Integers without Consecutive Ones		Hard
601	Human Traffic of Stadium		Hard
602	Friend Requests II: Who Has the Most Friends		Medium
603	Consecutive Available Seats		Easy
604	Design Compressed String Iterator		Easy
605	Can Place Flowers	JavaScript	Easy
606	Construct String from Binary Tree	JavaScript	Easy
607	Sales Person		Easy
608	Tree Node		Medium
609	Find Duplicate File in System	JavaScript	Medium
610	Triangle Judgement		Easy
611	Valid Triangle Number	JavaScript	Medium
612	Shortest Distance in a Plane		Medium
613	Shortest Distance in a Line		Easy
614	Second Degree Follower		Medium
615	Average Salary: Departments VS Company		Hard
616	Add Bold Tag in String		Medium
617	Merge Two Binary Trees	JavaScript	Easy
618	Students Report By Geography		Hard
619	Biggest Single Number		Easy
620	Not Boring Movies	Mysql	Easy
621	Task Scheduler		Medium
622	Design Circular Queue	JavaScript	Medium
623	Add One Row to Tree	JavaScript	Medium
624	Maximum Distance in Arrays		Easy
625	Minimum Factorization		Medium
626	Exchange Seats	Mysql	Medium
627	Swap Salary	Mysql	Easy
628	Maximum Product of Three Numbers	JavaScript	Easy
629	K Inverse Pairs Array		Hard
630	Course Schedule III		Hard
631	Design Excel Sum Formula		Hard
632	Smallest Range Covering Elements from K Lists		Hard
633	Sum of Square Numbers	JavaScript	Easy
634	Find the Derangement of An Array		Medium
635	Design Log Storage System		Medium
636	Exclusive Time of Functions	JavaScript	Medium
637	Average of Levels in Binary Tree	JavaScript	Easy
638	Shopping Offers		Medium
639	Decode Ways II		Hard
640	Solve the Equation	JavaScript	Medium
641	Design Circular Deque	JavaScript	Medium
642	Design Search Autocomplete System		Hard
643	Maximum Average Subarray I	JavaScript	Easy
644	Maximum Average Subarray II		Hard
645	Set Mismatch	JavaScript	Easy
646	Maximum Length of Pair Chain	JavaScript	Medium
647	Palindromic Substrings	JavaScript	Medium
648	Replace Words	JavaScript	Medium
649	Dota2 Senate		Medium
650	2 Keys Keyboard		Medium
651	4 Keys Keyboard		Medium
652	Find Duplicate Subtrees	JavaScript	Medium
653	Two Sum IV - Input is a BST	JavaScript	Easy
654	Maximum Binary Tree	JavaScript	Medium
655	Print Binary Tree	JavaScript	Medium
656	Coin Path		Hard
657	Robot Return to Origin	JavaScript	Easy
658	Find K Closest Elements	JavaScript	Medium
659	Split Array into Consecutive Subsequences		Medium
660	Remove 9		Hard
661	Image Smoother	JavaScript	Easy
662	Maximum Width of Binary Tree	JavaScript	Medium
663	Equal Tree Partition		Medium
664	Strange Printer		Hard
665	Non-decreasing Array	JavaScript	Easy
666	Path Sum IV		Medium
667	Beautiful Arrangement II		Medium
668	Kth Smallest Number in Multiplication Table		Hard
669	Trim a Binary Search Tree	JavaScript	Easy
670	Maximum Swap	JavaScript	Medium
671	Second Minimum Node In a Binary Tree	JavaScript	Easy
672	Bulb Switcher II		Medium
673	Number of Longest Increasing Subsequence	JavaScript	Medium
674	Longest Continuous Increasing Subsequence	JavaScript	Easy
675	Cut Off Trees for Golf Event		Hard
676	Implement Magic Dictionary	JavaScript	Medium
677	Map Sum Pairs	JavaScript	Medium
678	Valid Parenthesis String	JavaScript	Medium
679	24 Game		Hard
680	Valid Palindrome II	JavaScript	Easy
681	Next Closest Time		Medium
682	Baseball Game	JavaScript	Easy
683	K Empty Slots		Hard
684	Redundant Connection	JavaScript	Medium
685	Redundant Connection II		Hard
686	Repeated String Match	JavaScript	Easy
687	Longest Univalue Path	JavaScript	Easy
688	Knight Probability in Chessboard		Medium
689	Maximum Sum of 3 Non-Overlapping Subarrays		Hard
690	Employee Importance	Python3	Easy
691	Stickers to Spell Word		Hard
692	Top K Frequent Words	JavaScript	Medium
693	Binary Number with Alternating Bits	JavaScript	Easy
694	Number of Distinct Islands		Medium
695	Max Area of Island	JavaScript	Medium
696	Count Binary Substrings	JavaScript	Easy
697	Degree of an Array	JavaScript	Easy
698	Partition to K Equal Sum Subsets		Medium
699	Falling Squares		Hard
700	Search in a Binary Search Tree	JavaScript	Easy
701	Insert into a Binary Search Tree	JavaScript	Medium
702	Search in a Sorted Array of Unknown Size		Medium
703	Kth Largest Element in a Stream	JavaScript	Easy
704	Binary Search	JavaScript	Easy
705	Design HashSet	JavaScript	Easy
706	Design HashMap	JavaScript	Easy
707	Design Linked List	JavaScript	Medium
708	Insert into a Sorted Circular Linked List		Medium
709	To Lower Case	JavaScript	Easy
710	Random Pick with Blacklist		Hard
711	Number of Distinct Islands II		Hard
712	Minimum ASCII Delete Sum for Two Strings	JavaScript	Medium
713	Subarray Product Less Than K	JavaScript	Medium
714	Best Time to Buy and Sell Stock with Transaction Fee	JavaScript	Medium
715	Range Module	JavaScript	Hard
716	Max Stack		Easy
717	1-bit and 2-bit Characters	JavaScript	Easy
718	Maximum Length of Repeated Subarray	JavaScript	Medium
719	Find K-th Smallest Pair Distance		Hard
720	Longest Word in Dictionary	JavaScript	Easy
721	Accounts Merge	JavaScript	Medium
722	Remove Comments	JavaScript	Medium
723	Candy Crush		Medium
724	Find Pivot Index	JavaScript	Easy
725	Split Linked List in Parts	JavaScript	Medium
726	Number of Atoms	JavaScript	Hard
727	Minimum Window Subsequence		Hard
728	Self Dividing Numbers	JavaScript	Easy
729	My Calendar I	JavaScript	Medium
730	Count Different Palindromic Subsequences		Hard
731	My Calendar II		Medium
732	My Calendar III		Hard
733	Flood Fill	JavaScript	Easy
734	Sentence Similarity		Easy
735	Asteroid Collision	JavaScript	Medium
736	Parse Lisp Expression		Hard
737	Sentence Similarity II		Medium
738	Monotone Increasing Digits	JavaScript	Medium
739	Daily Temperatures	JavaScript	Medium
740	Delete and Earn	JavaScript	Medium
741	Cherry Pickup		Hard
742	Closest Leaf in a Binary Tree		Medium
743	Network Delay Time	JavaScript	Medium
744	Find Smallest Letter Greater Than Target	JavaScript	Easy
745	Prefix and Suffix Search		Hard
746	Min Cost Climbing Stairs	JavaScript	Easy
747	Largest Number At Least Twice of Others	JavaScript	Easy
748	Shortest Completing Word	JavaScript	Easy
749	Contain Virus		Hard
750	Number Of Corner Rectangles		Medium
751	IP to CIDR		Easy
752	Open the Lock	JavaScript	Medium
753	Cracking the Safe		Hard
754	Reach a Number		Medium
755	Pour Water		Medium
756	Pyramid Transition Matrix	JavaScript	Medium
757	Set Intersection Size At Least Two		Hard
758	Bold Words in String		Easy
759	Employee Free Time		Hard
760	Find Anagram Mappings		Easy
761	Special Binary String		Hard
762	Prime Number of Set Bits in Binary Representation		Easy
763	Partition Labels	JavaScript	Medium
764	Largest Plus Sign		Medium
765	Couples Holding Hands		Hard
766	Toeplitz Matrix	JavaScript	Easy
767	Reorganize String	JavaScript	Medium
768	Max Chunks To Make Sorted II	JavaScript	Hard
769	Max Chunks To Make Sorted	JavaScript	Medium
770	Basic Calculator IV		Hard
771	Jewels and Stones	JavaScript	Easy
772	Basic Calculator III		Hard
773	Sliding Puzzle		Hard
774	Minimize Max Distance to Gas Station		Hard
775	Global and Local Inversions		Medium
776	Split BST		Medium
777	Swap Adjacent in LR String	JavaScript	Medium
778	Swim in Rising Water		Hard
779	K-th Symbol in Grammar		Medium
780	Reaching Points		Hard
781	Rabbits in Forest	JavaScript	Medium
782	Transform to Chessboard		Hard
783	Minimum Distance Between BST Nodes	JavaScript	Easy
784	Letter Case Permutation	JavaScript	Easy
785	Is Graph Bipartite?	JavaScript	Medium
786	K-th Smallest Prime Fraction		Hard
787	Cheapest Flights Within K Stops		Medium
788	Rotated Digits	JavaScript	Easy
789	Escape The Ghosts	JavaScript	Medium
790	Domino and Tromino Tiling		Medium
791	Custom Sort String	JavaScript	Medium
792	Number of Matching Subsequences	JavaScript	Medium
793	Preimage Size of Factorial Zeroes Function		Hard
794	Valid Tic-Tac-Toe State	JavaScript	Medium
795	Number of Subarrays with Bounded Maximum	JavaScript	Medium
796	Rotate String	JavaScript	Easy
797	All Paths From Source to Target	JavaScript	Medium
798	Smallest Rotation with Highest Score		Hard
799	Champagne Tower	JavaScript	Medium
800	Similar RGB Color		Easy
801	Minimum Swaps To Make Sequences Increasing		Medium
802	Find Eventual Safe States		Medium
803	Bricks Falling When Hit		Hard
804	Unique Morse Code Words	JavaScript	Easy
805	Split Array With Same Average		Hard
806	Number of Lines To Write String	JavaScript	Easy
807	Max Increase to Keep City Skyline	JavaScript	Medium
808	Soup Servings		Medium
809	Expressive Words	JavaScript	Medium
810	Chalkboard XOR Game		Hard
811	Subdomain Visit Count	JavaScript	Easy
812	Largest Triangle Area	JavaScript	Easy
813	Largest Sum of Averages	JavaScript	Medium
814	Binary Tree Pruning	JavaScript	Medium
815	Bus Routes		Hard
816	Ambiguous Coordinates	JavaScript	Medium
817	Linked List Components	JavaScript	Medium
818	Race Car		Hard
819	Most Common Word	JavaScript	Easy
820	Short Encoding of Words	JavaScript	Medium
821	Shortest Distance to a Character	JavaScript	Easy
822	Card Flipping Game	JavaScript	Medium
823	Binary Trees With Factors	JavaScript	Medium
824	Goat Latin	JavaScript	Easy
825	Friends Of Appropriate Ages	JavaScript	Medium
826	Most Profit Assigning Work	JavaScript	Medium
827	Making A Large Island		Hard
828	Unique Letter String		Hard
829	Consecutive Numbers Sum		Hard
830	Positions of Large Groups	JavaScript	Easy
831	Masking Personal Information	JavaScript	Medium
832	Flipping an Image	JavaScript	Easy
833	Find And Replace in String	JavaScript	Medium
834	Sum of Distances in Tree		Hard
835	Image Overlap		Medium
836	Rectangle Overlap	JavaScript	Easy
837	New 21 Game		Medium
838	Push Dominoes	JavaScript	Medium
839	Similar String Groups		Hard
840	Magic Squares In Grid	JavaScript	Easy
841	Keys and Rooms	JavaScript	Medium
842	Split Array into Fibonacci Sequence	JavaScript	Medium
843	Guess the Word		Hard
844	Backspace String Compare	JavaScript	Easy
845	Longest Mountain in Array	JavaScript	Medium
846	Hand of Straights	JavaScript	Medium
847	Shortest Path Visiting All Nodes		Hard
848	Shifting Letters	JavaScript	Medium
849	Maximize Distance to Closest Person	JavaScript	Easy
850	Rectangle Area II		Hard
851	Loud and Rich	JavaScript	Medium
852	Peak Index in a Mountain Array	JavaScript	Easy
853	Car Fleet	JavaScript	Medium
854	K-Similar Strings		Hard
855	Exam Room		Medium
856	Score of Parentheses	JavaScript	Medium
857	Minimum Cost to Hire K Workers		Hard
858	Mirror Reflection		Medium
859	Buddy Strings	JavaScript	Easy
860	Lemonade Change	JavaScript	Easy
861	Score After Flipping Matrix	JavaScript	Medium
862	Shortest Subarray with Sum at Least K	JavaScript	Hard
863	All Nodes Distance K in Binary Tree	JavaScript	Medium
864	Shortest Path to Get All Keys		Hard
865	Smallest Subtree with all the Deepest Nodes	JavaScript	Medium
866	Prime Palindrome		Medium
867	Transpose Matrix	JavaScript	Easy
868	Binary Gap	JavaScript	Easy
869	Reordered Power of 2	JavaScript	Medium
870	Advantage Shuffle	JavaScript	Medium
871	Minimum Number of Refueling Stops		Hard
872	Leaf-Similar Trees	JavaScript	Easy
873	Length of Longest Fibonacci Subsequence	JavaScript	Medium
874	Walking Robot Simulation	JavaScript	Easy
875	Koko Eating Bananas	JavaScript	Medium
876	Middle of the Linked List	JavaScript	Easy
877	Stone Game	JavaScript	Medium
878	Nth Magical Number		Hard
879	Profitable Schemes		Hard
880	Decoded String at Index		Medium
881	Boats to Save People	JavaScript	Medium
882	Reachable Nodes In Subdivided Graph		Hard
883	Projection Area of 3D Shapes	JavaScript	Easy
884	Uncommon Words from Two Sentences	JavaScript	Easy
885	Spiral Matrix III	JavaScript	Medium
886	Possible Bipartition	JavaScript	Medium
887	Super Egg Drop		Hard
888	Fair Candy Swap	JavaScript	Easy
889	Construct Binary Tree from Preorder and Postorder Traversal	JavaScript	Medium
890	Find and Replace Pattern	JavaScript	Medium
891	Sum of Subsequence Widths		Hard
892	Surface Area of 3D Shapes	JavaScript	Easy
893	Groups of Special-Equivalent Strings	JavaScript	Easy
894	All Possible Full Binary Trees	JavaScript	Medium
895	Maximum Frequency Stack		Hard
896	Monotonic Array	JavaScript	Easy
897	Increasing Order Search Tree	JavaScript	Easy
898	Bitwise ORs of Subarrays		Medium
899	Orderly Queue		Hard
900	RLE Iterator	JavaScript	Medium
901	Online Stock Span		Medium
902	Numbers At Most N Given Digit Set		Hard
903	Valid Permutations for DI Sequence		Hard
904	Fruit Into Baskets		Medium
905	Sort Array By Parity	JavaScript	Easy
906	Super Palindromes		Hard
907	Sum of Subarray Minimums	JavaScript	Medium
908	Smallest Range I	JavaScript	Easy
909	Snakes and Ladders		Medium
910	Smallest Range II		Medium
911	Online Election		Medium
912	Sort an Array	JavaScript	Medium
913	Cat and Mouse		Hard
914	X of a Kind in a Deck of Cards	JavaScript	Easy
915	Partition Array into Disjoint Intervals	JavaScript	Medium
916	Word Subsets	JavaScript	Medium
917	Reverse Only Letters	JavaScript	Easy
918	Maximum Sum Circular Subarray	JavaScript	Medium
919	Complete Binary Tree Inserter	JavaScript	Medium
920	Number of Music Playlists		Hard
921	Minimum Add to Make Parentheses Valid	JavaScript	Medium
922	Sort Array By Parity II	JavaScript	Easy
923	3Sum With Multiplicity	JavaScript	Medium
924	Minimize Malware Spread		Hard
925	Long Pressed Name	JavaScript	Easy
926	Flip String to Monotone Increasing	JavaScript	Medium
927	Three Equal Parts		Hard
928	Minimize Malware Spread II		Hard
929	Unique Email Addresses	JavaScript	Easy
930	Binary Subarrays With Sum	JavaScript	Medium
931	Minimum Falling Path Sum	JavaScript	Medium
932	Beautiful Array		Medium
933	Number of Recent Calls	JavaScript	Easy
934	Shortest Bridge	JavaScript	Medium
935	Knight Dialer	JavaScript	Medium
936	Stamping The Sequence		Hard
937	Reorder Data in Log Files	JavaScript	Easy
938	Range Sum of BST	JavaScript	Easy
939	Minimum Area Rectangle	JavaScript	Medium
940	Distinct Subsequences II	JavaScript	Hard
941	Valid Mountain Array	JavaScript	Easy
942	DI String Match	JavaScript	Easy
943	Find the Shortest Superstring		Hard
944	Delete Columns to Make Sorted	JavaScript	Easy
945	Minimum Increment to Make Array Unique	JavaScript	Medium
946	Validate Stack Sequences	JavaScript	Medium
947	Most Stones Removed with Same Row or Column		Medium
948	Bag of Tokens	JavaScript	Medium
949	Largest Time for Given Digits	JavaScript	Easy
950	Reveal Cards In Increasing Order	JavaScript	Medium
951	Flip Equivalent Binary Trees	JavaScript	Medium
952	Largest Component Size by Common Factor		Hard
953	Verifying an Alien Dictionary	JavaScript	Easy
954	Array of Doubled Pairs	JavaScript	Medium
955	Delete Columns to Make Sorted II	JavaScript	Medium
956	Tallest Billboard		Hard
957	Prison Cells After N Days		Medium
958	Check Completeness of a Binary Tree	JavaScript	Medium
959	Regions Cut By Slashes	JavaScript	Medium
960	Delete Columns to Make Sorted III		Hard
961	N-Repeated Element in Size 2N Array	JavaScript	Easy
962	Maximum Width Ramp		Medium
963	Minimum Area Rectangle II		Medium
964	Least Operators to Express Number		Hard
965	Univalued Binary Tree	JavaScript	Easy
966	Vowel Spellchecker	JavaScript	Medium
967	Numbers With Same Consecutive Differences	JavaScript	Medium
968	Binary Tree Cameras	JavaScript	Hard
969	Pancake Sorting	JavaScript	Medium
970	Powerful Integers	JavaScript	Easy
971	Flip Binary Tree To Match Preorder Traversal	JavaScript	Medium
972	Equal Rational Numbers	JavaScript	Hard
973	K Closest Points to Origin		Medium
974	Subarray Sums Divisible by K	JavaScript	Medium
975	Odd Even Jump		Hard
976	Largest Perimeter Triangle	JavaScript	Easy
977	Squares of a Sorted Array		Easy
978	Longest Turbulent Subarray		Medium
979	Distribute Coins in Binary Tree		Medium
980	Unique Paths III		Hard
981	Time Based Key-Value Store		Medium
982	Triples with Bitwise AND Equal To Zero		Hard
983	Minimum Cost For Tickets	JavaScript	Medium
984	String Without AAA or BBB		Medium
985	Sum of Even Numbers After Queries		Easy
986	Interval List Intersections		Medium
987	Vertical Order Traversal of a Binary Tree		Medium
988	Smallest String Starting From Leaf		Medium
989	Add to Array-Form of Integer		Easy
990	Satisfiability of Equality Equations		Medium
991	Broken Calculator		Medium
992	Subarrays with K Different Integers		Hard
993	Cousins in Binary Tree		Easy
994	Rotting Oranges		Easy
995	Minimum Number of K Consecutive Bit Flips		Hard
996	Number of Squareful Arrays		Hard
997	Find the Town Judge		Easy
998	Maximum Binary Tree II		Medium
999	Available Captures for Rook		Easy
1000	Minimum Cost to Merge Stones		Hard
1001	Grid Illumination	JavaScript	Hard
1002	Find Common Characters	JavaScript	Easy
1003	Check If Word Is Valid After Substitutions	JavaScript	Medium
1004	Max Consecutive Ones III	JavaScript	Medium
1005	Maximize Sum Of Array After K Negations	JavaScript	Easy
1006	Clumsy Factorial	JavaScript	Medium
1007	Minimum Domino Rotations For Equal Row	JavaScript	Medium
1008	Construct Binary Search Tree from Preorder Traversal	JavaScript	Medium
1009	Complement of Base 10 Integer	JavaScript	Easy
1010	Pairs of Songs With Total Durations Divisible by 60	JavaScript	Easy
1011	Capacity To Ship Packages Within D Days	JavaScript	Medium
1012	Numbers With Repeated Digits		Hard
1013	Partition Array Into Three Parts With Equal Sum	JavaScript	Easy
1014	Best Sightseeing Pair	JavaScript	Medium
1015	Smallest Integer Divisible by K		Medium
1016	Binary String With Substrings Representing 1 To N		Medium
1017	Convert to Base -2	JavaScript	Medium
1018	Binary Prefix Divisible By 5	JavaScript	Easy
1019	Next Greater Node In Linked List	JavaScript	Medium
1020	Number of Enclaves	JavaScript	Medium
1021	Remove Outermost Parentheses	JavaScript	Easy
1022	Sum of Root To Leaf Binary Numbers	JavaScript	Easy
1023	Camelcase Matching	JavaScript	Medium
1024	Video Stitching	JavaScript	Medium
1025	Divisor Game	JavaScript	Easy
1026	Maximum Difference Between Node and Ancestor	JavaScript	Medium
1027	Longest Arithmetic Sequence	JavaScript	Medium
1028	Recover a Tree From Preorder Traversal	JavaScript	Hard
1029	Two City Scheduling	JavaScript	Easy
1030	Matrix Cells in Distance Order	JavaScript	Easy
1031	Maximum Sum of Two Non-Overlapping Subarrays	JavaScript	Medium
1032	Stream of Characters	JavaScript	Hard
1033	Moving Stones Until Consecutive	JavaScript	Easy
1034	Coloring A Border	JavaScript	Medium
1035	Uncrossed Lines		Medium
1036	Escape a Large Maze		Hard
1037	Valid Boomerang	JavaScript	Easy
1038	Binary Search Tree to Greater Sum Tree	JavaScript	Medium
1039	Minimum Score Triangulation of Polygon		Medium
1040	Moving Stones Until Consecutive II		Medium
1041	Robot Bounded In Circle	JavaScript	Medium
1042	Flower Planting With No Adjacent		Easy
1043	Partition Array for Maximum Sum	JavaScript	Medium
1044	Longest Duplicate Substring		Hard
1045	Customers Who Bought All Products		Medium
1046	Last Stone Weight	JavaScript	Easy
1047	Remove All Adjacent Duplicates In String	JavaScript	Easy
1048	Longest String Chain	JavaScript	Medium
1049	Last Stone Weight II		Medium
1050	Actors and Directors Who Cooperated At Least Three Times		Easy
1051	Height Checker	JavaScript	Easy
1052	Grumpy Bookstore Owner	JavaScript	Medium
1053	Previous Permutation With One Swap	JavaScript	Medium
1054	Distant Barcodes	JavaScript	Medium
1055	Shortest Way to Form String		Medium
1056	Confusing Number		Easy
1057	Campus Bikes		Medium
1058	Minimize Rounding Error to Meet Target		Medium
1059	All Paths from Source Lead to Destination		Medium
1060	Missing Element in Sorted Array		Medium
1061	Lexicographically Smallest Equivalent String		Medium
1062	Longest Repeating Substring		Medium
1063	Number of Valid Subarrays		Hard
1064	Fixed Point	JavaScript	Easy
1065	Index Pairs of a String	JavaScript	Easy
1066	Campus Bikes II		Medium
1067	Digit Count in Range		Hard
1068	Product Sales Analysis I		Easy
1069	Product Sales Analysis II		Easy
1070	Product Sales Analysis III		Medium
1071	Greatest Common Divisor of Strings	JavaScript	Easy
1072	Flip Columns For Maximum Number of Equal Rows		Medium
1073	Adding Two Negabinary Numbers		Medium
1074	Number of Submatrices That Sum to Target		Hard
1075	Project Employees I		Easy
1076	Project Employees II		Easy
1077	Project Employees III		Medium
1078	Occurrences After Bigram	JavaScript	Easy
1079	Letter Tile Possibilities	JavaScript	Medium
1080	Insufficient Nodes in Root to Leaf Paths	JavaScript	Medium
1081	Smallest Subsequence of Distinct Characters		Medium
1082	Sales Analysis I		Easy
1083	Sales Analysis II		Easy
1084	Sales Analysis III		Easy
1085	Sum of Digits in the Minimum Number	JavaScript	Easy
1086	High Five	JavaScript	Easy
1087	Brace Expansion	JavaScript	Medium
1088	Confusing Number II		Hard
1089	Duplicate Zeros	JavaScript	Easy
1090	Largest Values From Labels	JavaScript	Medium
1091	Shortest Path in Binary Matrix	JavaScript	Medium
1092	Shortest Common Supersequence	JavaScript	Hard
1093	Statistics from a Large Sample	JavaScript	Medium
1094	Car Pooling	JavaScript	Medium
1095	Find in Mountain Array	JavaScript Python3	Hard
1096	Brace Expansion II	JavaScript	Hard
1097	Game Play Analysis V		Hard
1098	Unpopular Books		Medium
1099	Two Sum Less Than K	JavaScript	Easy
1100	Find K-Length Substrings With No Repeated Characters	JavaScript	Medium
1101	The Earliest Moment When Everyone Become Friends	JavaScript	Medium
1102	Path With Maximum Minimum Value		Medium
1103	Distribute Candies to People	JavaScript	Easy
1104	Path In Zigzag Labelled Binary Tree	JavaScript	Medium
1105	Filling Bookcase Shelves		Medium
1106	Parsing A Boolean Expression	JavaScript	Hard
1107	New Users Daily Count		Medium
1108	Defanging an IP Address	JavaScript	Easy
1109	Corporate Flight Bookings	JavaScript	Medium
1110	Delete Nodes And Return Forest	JavaScript	Medium
1111	Maximum Nesting Depth of Two Valid Parentheses Strings		Medium
1112	Highest Grade For Each Student		Medium
1113	Reported Posts		Easy
1114	Print in Order		Easy
1115	Print FooBar Alternately		Medium
1116	Print Zero Even Odd		Medium
1117	Building H2O		Medium
1118	Number of Days in a Month	JavaScript	Easy
1119	Remove Vowels from a String	JavaScript	Easy
1120	Maximum Average Subtree	JavaScript	Medium
1121	Divide Array Into Increasing Sequences		Hard
1122	Relative Sort Array	JavaScript	Easy
1123	Lowest Common Ancestor of Deepest Leaves	JavaScript	Medium
1124	Longest Well-Performing Interval		Medium
1125	Smallest Sufficient Team		Hard
1126	Active Businesses		Medium
1127	User Purchase Platform		Hard
1128	Number of Equivalent Domino Pairs	JavaScript	Easy
1129	Shortest Path with Alternating Colors	JavaScript	Medium
1130	Minimum Cost Tree From Leaf Values	JavaScript	Medium
1131	Maximum of Absolute Value Expression	JavaScript	Medium
1132	Reported Posts II		Medium
1133	Largest Unique Number	JavaScript	Easy
1134	Armstrong Number	JavaScript	Easy
1135	Connecting Cities With Minimum Cost		Medium
1136	Parallel Courses		Hard
1137	N-th Tribonacci Number	JavaScript	Easy
1138	Alphabet Board Path	JavaScript	Medium
1139	Largest 1-Bordered Square	JavaScript	Medium
1140	Stone Game II		Medium
1141	User Activity for the Past 30 Days I		Easy
1142	User Activity for the Past 30 Days II		Easy
1143	Longest Common Subsequence	JavaScript	Medium
1144	Decrease Elements To Make Array Zigzag	JavaScript	Medium
1145	Binary Tree Coloring Game	JavaScript	Medium
1146	Snapshot Array	JavaScript	Medium
1147	Longest Chunked Palindrome Decomposition		Hard
1148	Article Views I		Easy
1149	Article Views II		Medium
1150	Check If a Number Is Majority Element in a Sorted Array	JavaScript	Easy
1151	Minimum Swaps to Group All 1's Together		Medium
1152	Analyze User Website Visit Pattern	JavaScript	Medium
1153	String Transforms Into Another String		Hard
1154	Day of the Year	JavaScript	Easy
1155	Number of Dice Rolls With Target Sum	JavaScript	Medium
1156	Swap For Longest Repeated Character Substring	JavaScript	Medium
1157	Online Majority Element In Subarray		Hard
1158	Market Analysis I		Medium
1159	Market Analysis II		Hard
1160	Find Words That Can Be Formed by Characters	JavaScript	Easy
1161	Maximum Level Sum of a Binary Tree	JavaScript	Medium
1162	As Far from Land as Possible	JavaScript	Medium
1163	Last Substring in Lexicographical Order		Hard
1164	Product Price at a Given Date		Medium
1165	Single-Row Keyboard	JavaScript	Easy
1166	Design File System	JavaScript	Medium
1167	Minimum Cost to Connect Sticks	JavaScript	Medium
1168	Optimize Water Distribution in a Village		Hard
1169	Invalid Transactions	JavaScript	Medium
1170	Compare Strings by Frequency of the Smallest Character	JavaScript	Easy
1171	Remove Zero Sum Consecutive Nodes from Linked List	JavaScript	Medium
1172	Dinner Plate Stacks	JavaScript	Hard
1173	Immediate Food Delivery I		Easy
1174	Immediate Food Delivery II		Medium
1175	Prime Arrangements	JavaScript	Easy
1176	Diet Plan Performance	JavaScript	Easy
1177	Can Make Palindrome from Substring	JavaScript	Medium
1178	Number of Valid Words for Each Puzzle		Hard
1179	Reformat Department Table		Easy
1180	Count Substrings with Only One Distinct Letter	JavaScript	Easy
1181	Before and After Puzzle	JavaScript	Medium
1182	Shortest Distance to Target Color	JavaScript	Medium
1183	Maximum Number of Ones		Hard
1184	Distance Between Bus Stops	JavaScript	Easy
1185	Day of the Week	JavaScript	Easy
1186	Maximum Subarray Sum with One Deletion	JavaScript	Medium
1187	Make Array Strictly Increasing		Hard
1188	Design Bounded Blocking Queue		Medium
1189	Maximum Number of Balloons	JavaScript	Easy
1190	Reverse Substrings Between Each Pair of Parentheses	JavaScript	Medium
1191	K-Concatenation Maximum Sum	JavaScript	Medium
1192	Critical Connections in a Network		Hard
1193	Monthly Transactions I		Medium
1194	Tournament Winners		Hard
1195	Fizz Buzz Multithreaded		Medium
1196	How Many Apples Can You Put into the Basket	JavaScript	Easy
1197	Minimum Knight Moves	JavaScript	Medium
1198	Find Smallest Common Element in All Rows	JavaScript	Medium
1199	Minimum Time to Build Blocks		Hard
1200	Minimum Absolute Difference	JavaScript	Easy
1201	Ugly Number III	JavaScript	Medium
1202	Smallest String With Swaps	JavaScript	Medium
1203	Sort Items by Groups Respecting Dependencies		Hard
1204	Last Person to Fit in the Elevator		Medium
1205	Monthly Transactions II		Medium
1206	Design Skiplist		Hard
1207	Unique Number of Occurrences	JavaScript	Easy
1208	Get Equal Substrings Within Budget	JavaScript	Medium
1209	Remove All Adjacent Duplicates in String II	JavaScript	Medium
1210	Minimum Moves to Reach Target with Rotations	JavaScript	Hard
1211	Queries Quality and Percentage		Easy
1212	Team Scores in Football Tournament		Medium
1213	Intersection of Three Sorted Arrays	JavaScript	Easy
1214	Two Sum BSTs	JavaScript	Medium
1215	Stepping Numbers		Medium
1216	Valid Palindrome III		Hard
1217	Play with Chips	JavaScript	Easy
1218	Longest Arithmetic Subsequence of Given Difference	JavaScript	Medium
1219	Path with Maximum Gold	JavaScript	Medium
1220	Count Vowels Permutation	JavaScript	Hard
1221	Split a String in Balanced Strings	JavaScript	Easy
1222	Queens That Can Attack the King	JavaScript	Medium
1223	Dice Roll Simulation		Medium
1224	Maximum Equal Frequency		Hard
1225	Report Contiguous Dates		Hard
1226	The Dining Philosophers		Medium
1227	Airplane Seat Assignment Probability		Medium
1228	Missing Number In Arithmetic Progression	JavaScript	Easy
1229	Meeting Scheduler	JavaScript	Medium
1230	Toss Strange Coins	JavaScript	Medium
1231	Divide Chocolate		Hard
1232	Check If It Is a Straight Line	JavaScript	Easy
1233	Remove Sub-Folders from the Filesystem	JavaScript	Medium
1234	Replace the Substring for Balanced String		Medium
1235	Maximum Profit in Job Scheduling		Hard
1236	Web Crawler		Medium
1237	Find Positive Integer Solution for a Given Equation	JavaScript	Easy
1238	Circular Permutation in Binary Representation		Medium
1239	Maximum Length of a Concatenated String with Unique Characters	JavaScript	Medium
1240	Tiling a Rectangle with the Fewest Squares		Hard
1241	Number of Comments per Post		Easy
1242	Web Crawler Multithreaded		Medium
1243	Array Transformation		Easy
1244	Design A Leaderboard		Medium
1245	Tree Diameter		Medium
1246	Palindrome Removal		Hard
1247	Minimum Swaps to Make Strings Equal	JavaScript	Medium
1248	Count Number of Nice Subarrays	JavaScript	Medium
1249	Minimum Remove to Make Valid Parentheses	JavaScript	Medium
1250	Check If It Is a Good Array		Hard
1251	Average Selling Price		Easy
1252	Cells with Odd Values in a Matrix	JavaScript	Easy
1253	Reconstruct a 2-Row Binary Matrix	JavaScript	Medium
1254	Number of Closed Islands	JavaScript	Medium
1255	Maximum Score Words Formed by Letters	JavaScript	Hard
1256	Encode Number	JavaScript	Medium
1257	Smallest Common Region	JavaScript	Medium
1258	Synonymous Sentences	Python3	Medium
1259	Handshakes That Don't Cross		Hard
1260	Shift 2D Grid	JavaScript	Easy
1261	Find Elements in a Contaminated Binary Tree	Python3	Medium
1262	Greatest Sum Divisible by Three	JavaScript	Medium
1263	Minimum Moves to Move a Box to Their Target Location		Hard
1264	Page Recommendations		Medium
1265	Print Immutable Linked List in Reverse		Medium
1266	Minimum Time Visiting All Points	JavaScript	Easy
1267	Count Servers that Communicate	JavaScript	Medium
1268	Search Suggestions System	Python3	Medium
1269	Number of Ways to Stay in the Same Place After Some Steps	JavaScript	Hard
1270	All People Report to the Given Manager		Medium
1271	Hexspeak	Python3	Easy
1272	Remove Interval	Python3	Medium
1273	Delete Tree Nodes	JavaScript	Medium
1274	Number of Ships in a Rectangle		Hard
1275	Find Winner on a Tic Tac Toe Game	JavaScript	Easy
1276	Number of Burgers with No Waste of Ingredients	JavaScript	Medium
1277	Count Square Submatrices with All Ones	JavaScript	Medium
1278	Palindrome Partitioning III		Hard
1279	Traffic Light Controlled Intersection		Easy
1280	Students and Examinations		Easy
1281	Subtract the Product and Sum of Digits of an Integer	JavaScript	Easy
1282	Group the People Given the Group Size They Belong To	JavaScript	Medium
1283	Find the Smallest Divisor Given a Threshold	JavaScript	Medium
1284	Minimum Number of Flips to Convert Binary Matrix to Zero Matrix		Hard
1285	Find the Start and End Number of Continuous Ranges		Medium
1286	Iterator for Combination	Python3	Medium
1287	Element Appearing More Than 25% In Sorted Array	JavaScript	Easy
1288	Remove Covered Intervals	JavaScript	Medium
1289	Minimum Falling Path Sum II	JavaScript	Hard
1290	Convert Binary Number in a Linked List to Integer	JavaScript	Easy
1291	Sequential Digits	JavaScript	Medium
1292	Maximum Side Length of a Square with Sum Less than or Equal to Threshold		Medium
1293	Shortest Path in a Grid with Obstacles Elimination		Hard
1294	Weather Type in Each Country		Easy
1295	Find Numbers with Even Number of Digits	JavaScript	Easy
1296	Divide Array in Sets of K Consecutive Numbers	JavaScript	Medium
1297	Maximum Number of Occurrences of a Substring		Medium
1298	Maximum Candies You Can Get from Boxes		Hard
1299	Replace Elements with Greatest Element on Right Side	JavaScript	Easy
1300	Sum of Mutated Array Closest to Target	JavaScript	Medium
1301	Number of Paths with Max Score	Python3	Hard
1302	Deepest Leaves Sum	JavaScript	Medium
1303	Find the Team Size		Easy
1304	Find N Unique Integers Sum up to Zero	JavaScript	Easy
1305	All Elements in Two Binary Search Trees	Python3	Medium
1306	Jump Game III	JavaScript	Medium
1307	Verbal Arithmetic Puzzle		Hard
1308	Running Total for Different Genders		Medium
1309	Decrypt String from Alphabet to Integer Mapping	JavaScript	Easy
1310	XOR Queries of a Subarray	JavaScript	Medium
1311	Get Watched Videos by Your Friends	JavaScript	Medium
1312	Minimum Insertion Steps to Make a String Palindrome	JavaScript	Hard
1313	Decompress Run-Length Encoded List	JavaScript	Easy
1314	Matrix Block Sum	JavaScript	Medium
1315	Sum of Nodes with Even-Valued Grandparent	JavaScript	Medium
1316	Distinct Echo Substrings		Hard
1317	Convert Integer to the Sum of Two No-Zero Integers	JavaScript	Easy
1318	Minimum Flips to Make a OR b Equal to c	JavaScript	Medium
1319	Number of Operations to Make Network Connected		Medium
1320	Minimum Distance to Type a Word Using Two Fingers		Hard
1321	Restaurant Growth		Medium
1322	Ads Performance		Easy
1323	Maximum 69 Number	JavaScript	Easy
1324	Print Words Vertically	JavaScript	Medium
1325	Delete Leaves With a Given Value	JavaScript	Medium
1326	Minimum Number of Taps to Open to Water a Garden	JavaScript	Hard
1327	List the Products Ordered in a Period		Easy
1328	Break a Palindrome	JavaScript	Medium
1329	Sort the Matrix Diagonally	JavaScript	Medium
1330	Reverse Subarray To Maximize Array Value		Hard
1331	Rank Transform of an Array	JavaScript	Easy
1332	Remove Palindromic Subsequences	JavaScript	Easy
1333	Filter Restaurants by Vegan-Friendly, Price and Distance	JavaScript	Medium
1334	Find the City With the Smallest Number of Neighbors at a Threshold Distance	JavaScript	Medium
1335	Minimum Difficulty of a Job Schedule	JavaScript	Hard
1336	Number of Transactions per Visit		Hard
1337	The K Weakest Rows in a Matrix	JavaScript	Easy
1338	Reduce Array Size to The Half	JavaScript	Medium
1339	Maximum Product of Splitted Binary Tree	JavaScript	Medium
1340	Jump Game V	JavaScript	Hard
1341	Movie Rating		Medium
1342	Number of Steps to Reduce a Number to Zero	JavaScript	Easy
1343	Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold	JavaScript	Medium
1344	Angle Between Hands of a Clock	JavaScript	Medium
1345	Jump Game IV	JavaScript	Hard