Well-structured Leetcode Problem Solutions (JavaScript)

Optimized solutions for Leetcode algorithmic problems.

Table of Contents

S.No	Title	Difficulty
1	Two Sum
2	Add Two Numbers
3	Longest Substring Without Repeating Characters
4	Median Of Two Sorted Arrays
5	Longest Palindromic Substring
6	Zigzag Conversion
7	Reverse Integer
8	String to Integer Atoi
9	Palindrome Number
10	Regular Expression Matching
11	Container With Most Water
12	Integer To Roman
13	Roman To Integer
14	Longest Common Prefix
15	3sum
16	3sum Closest
17	Letter Combinations Of A Phone Number
18	4sum
19	Remove Nth Node From End Of List
20	Valid Parentheses
21	Merge Two Sorted Lists
22	Generate Parentheses
23	Merge K Sorted Lists
24	Swap Nodes In Pairs
25	Reverse Nodes In K Group
26	Remove Duplicates From Sorted Array
27	Remove Element
28	Find the Index of the First Occurrence in a String
29	Divide Two Integers
30	Substring With Concatenation Of All Words
31	Next Permutation
32	Longest Valid Parentheses
33	Search In Rotated Sorted Array
34	Find First And Last Position Of Element In Sorted Array
35	Search Insert Position
36	Valid Sudoku
37	Sudoku Solver
38	Count And Say
39	Combination Sum
40	Combination Sum II
41	First Missing Positive
42	Trapping Rain Water
43	Multiply Strings
44	Wildcard Matching
45	Jump Game II
46	Permutations
47	Permutations II
48	Rotate Image
49	Group Anagrams
50	Powx N
51	N Queens
52	N Queens II
53	Maximum Subarray
54	Spiral Matrix
55	Jump Game
56	Merge Intervals
57	Insert Interval
58	Length Of Last Word
59	Spiral Matrix II
60	Permutation Sequence
61	Rotate List
62	Unique Paths
63	Unique Paths II
64	Minimum Path Sum
65	Valid Number
66	Plus One
67	Add Binary
68	Text Justification
69	Sqrtx
70	Climbing Stairs
71	Simplify Path
72	Edit Distance
73	Set Matrix Zeroes
74	Search A 2d Matrix
75	Sort Colors
76	Minimum Window Substring
77	Combinations
78	Subsets
79	Word Search
80	Remove Duplicates From Sorted Array II
81	Search In Rotated Sorted Array II
82	Remove Duplicates From Sorted List II
83	Remove Duplicates From Sorted List
84	Largest Rectangle In Histogram
85	Maximal Rectangle
86	Partition List
87	Scramble String
88	Merge Sorted Array
89	Gray Code
90	Subsets II
91	Decode Ways
92	Reverse Linked List II
93	Restore Ip Addresses
94	Binary Tree Inorder Traversal
95	Unique Binary Search Trees II
96	Unique Binary Search Trees
97	Interleaving String
98	Validate Binary Search Tree
99	Recover Binary Search Tree
100	Same Tree
101	Symmetric Tree
102	Binary Tree Level Order Traversal
103	Binary Tree Zigzag Level Order Traversal
104	Maximum Depth Of Binary Tree
105	Construct Binary Tree From Preorder And Inorder Traversal
106	Construct Binary Tree From Inorder And Postorder Traversal
107	Binary Tree Level Order Traversal II
108	Convert Sorted Array To Binary Search Tree
109	Convert Sorted List To Binary Search Tree
110	Balanced Binary Tree
111	Minimum Depth Of Binary Tree
112	Path Sum
113	Path Sum II
114	Flatten Binary Tree To Linked List
115	Distinct Subsequences
116	Populating Next Right Pointers In Each Node
117	Populating Next Right Pointers In Each Node II
118	Pascals Triangle
119	Pascals Triangle II
120	Triangle
121	Best Time To Buy And Sell Stock
122	Best Time To Buy And Sell Stock II
123	Best Time To Buy And Sell Stock III
124	Binary Tree Maximum Path Sum
125	Valid Palindrome
126	Word Ladder II
127	Word Ladder
128	Longest Consecutive Sequence
129	Sum Root To Leaf Numbers
130	Surrounded Regions
131	Palindrome Partitioning
132	Palindrome Partitioning II
133	Clone Graph
134	Gas Station
135	Candy
136	Single Number
137	Single Number II
138	Copy List With Random Pointer
139	Word Break
140	Word Break II
141	Linked List Cycle
142	Linked List Cycle II
143	Reorder List
144	Binary Tree Preorder Traversal
145	Binary Tree Postorder Traversal
146	Lru Cache
147	Insertion Sort List
148	Sort List
149	Max Points On A Line
150	Evaluate Reverse Polish Notation
151	Reverse Words In A String
152	Maximum Product Subarray
153	Find Minimum In Rotated Sorted Array
154	Find Minimum In Rotated Sorted Array II
155	Min Stack
156	Binary Tree Upside Down
157	Read N Characters Given Read 4
158	Read N Characters Given Read 4 II Call Multiple Times
159	Longest Substring With At Most Two Distinct Characters
160	Intersection Of Two Linked Lists
161	One Edit Distance
162	Find Peak Element
163	Missing Ranges
164	Maximum Gap
165	Compare Version Numbers
166	Fraction To Recurring Decimal
167	Two Sum II Input Array Is Sorted
168	Excel Sheet Column Title
169	Majority Element
170	Two Sum III Data Structure Design
171	Excel Sheet Column Number
172	Factorial Trailing Zeroes
173	Binary Search Tree Iterator
174	Dungeon Game
175	Combine Two Tables
176	Second Highest Salary
177	Nth Highest Salary
178	Rank Scores
179	Largest Number
180	Consecutive Numbers Sum
181	Employees Earning More Than Their Managers
182	Duplicate Emails
183	Customers Who Never Order
184	Department Highest Salary
185	Department Top Three Salaries
186	Reverse Words In A String II
187	Repeated Dna Sequences
188	Best Time To Buy And Sell Stock Iv
189	Rotate Array
190	Reverse Bits
191	Number Of 1 Bits
192	Word Frequency
193	Valid Phone Numbers
194	Transpose File
195	Tenth Line
196	Delete Duplicate Emails
197	Rising Temperature
198	House Robber
199	Binary Tree Right Side View
200	Number Of Islands
201	Bitwise And Of Numbers Range
202	Happy Number
203	Remove Linked List Elements
204	Count Primes
205	Isomorphic Strings
206	Reverse Linked List
207	Course Schedule
208	Implement Trie Prefix Tree
209	Minimum Size Subarray Sum
210	Course Schedule II
211	Design Add And Search Words Data Structure
212	Word Search II
213	House Robber II
214	Shortest Palindrome
215	Kth Largest Element In An Array
216	Combination Sum III
217	Contains Duplicate
218	The Skyline Problem
219	Contains Duplicate II
220	Contains Duplicate III
221	Maximal Square
222	Count Complete Tree Nodes
223	Rectangle Area
224	Basic Calculator
225	Implement Stack Using Queues
226	Invert Binary Tree
227	Basic Calculator II
228	Summary Ranges
229	Majority Element II
230	Kth Smallest Element In A Bst
231	Power Of Two
232	Implement Queue Using Stacks
233	Number Of Digit One
234	Palindrome Linked List
235	Lowest Common Ancestor Of A Binary Search Tree
236	Lowest Common Ancestor Of A Binary Tree
237	Delete Node In A Linked List
238	Product Of Array Except Self
239	Sliding Window Maximum
240	Search A 2d Matrix II
241	Different Ways To Add Parentheses
242	Valid Anagram
243	Shortest Word Distance
244	Shortest Word Distance II
245	Shortest Word Distance III
246	Strobogrammatic Number
247	Strobogrammatic Number II
248	Strobogrammatic Number III
249	Group Shifted Strings
250	Count Univalue Subtrees
251	Flatten 2d Vector
252	Meeting Rooms
253	Meeting Rooms II
254	Factor Combinations
255	Verify Preorder Sequence In Binary Search Tree
256	Paint House
257	Binary Tree Paths
258	Add Digits
259	3sum Smaller
260	Single Number III
261	Graph Valid Tree
262	Trips and Users
263	Ugly Number
264	Ugly Number II
265	Paint House II
266	Palindrome Permutation
267	Palindrome Permutation II
268	Missing Number
269	Alien Dictionary
270	Closest Binary Search Tree Value
271	Encode And Decode Strings
272	Closest Binary Search Tree Value II
273	Integer To English Words
274	H Index
275	H Index II
276	Paint Fence
277	Find The Celebrity
278	First Bad Version
279	Perfect Squares
280	Wiggle Sort
281	Zigzag Iterator
282	Expression Add Operators
283	Move Zeroes
284	Peeking Iterator
285	Inorder Successor In Bst
286	Walls And Gates
287	Find The Duplicate Number
288	Unique Word Abbreviation
289	Game Of Life
290	Word Pattern
291	Word Pattern II
292	Nim Game
293	Flip Game
294	Flip Game II
295	Find Median From Data Stream
296	Best Meeting Point
297	Serialize And Deserialize Binary Tree
298	Binary Tree Longest Consecutive Sequence
299	Bulls And Cows
300	Longest Increasing Subsequence
301	Remove Invalid Parentheses
302	Smallest Rectangle Enclosing Black Pixels
303	Range Sum Query Immutable
304	Range Sum Query 2d Immutable
305	Number Of Islands II
306	Additive Number
307	Range Sum Query Mutable
308	Range Sum Query 2d Mutable
309	Best Time To Buy And Sell Stock With Cooldown
310	Minimum Height Trees
311	Sparse Matrix Multiplication
312	Burst Balloons
313	Super Ugly Number
314	Binary Tree Vertical Order Traversal
315	Count Of Smaller Numbers After Self
316	Remove Duplicate Letters
317	Shortest Distance From All Buildings
318	Maximum Product Of Word Lengths
319	Bulb Switcher
320	Generalized Abbreviation
321	Create Maximum Number
322	Coin Change
323	Number Of Connected Components In An Undirected Graph
324	Wiggle Sort II
325	Maximum Size Subarray Sum Equals K
326	Power Of Three
327	Count Of Range Sum
328	Odd Even Linked List
329	Longest Increasing Path In A Matrix
330	Patching Array
331	Verify Preorder Serialization Of A Binary Tree
332	Reconstruct Itinerary
333	Largest Bst Subtree
334	Increasing Triplet Subsequence
335	Self Crossing
336	Palindrome Pairs
337	House Robber III
338	Counting Bits
339	Nested List Weight Sum
340	Longest Substring With At Most K Distinct Characters
341	Flatten Nested List Iterator
342	Power Of Four
343	Integer Break
344	Reverse String
345	Reverse Vowels Of A String
346	Moving Average From Data Stream
347	Top K Frequent Elements
348	Design Tic Tac Toe
349	Intersection Of Two Arrays
350	Intersection Of Two Arrays II
351	Android Unlock Patterns
352	Data Stream As Disjoint Intervals
353	Design Snake Game
354	Russian Doll Envelopes
355	Design Twitter
356	Line Reflection
357	Count Numbers With Unique Digits
358	Rearrange String K Distance Apart
359	Logger Rate Limiter
360	Sort Transformed Array
361	Bomb Enemy
362	Design Hit Counter
363	Max Sum Of Rectangle No Larger Than K
364	Nested List Weight Sum II
365	Water And Jug Problem
366	Find Leaves Of Binary Tree
367	Valid Perfect Square
368	Largest Divisible Subset
369	Plus One Linked List
370	Range Addition
371	Sum Of Two Integers
372	Super Pow
373	Find K Pairs With Smallest Sums
374	Guess Number Higher Or Lower
375	Guess Number Higher Or Lower II
376	Wiggle Subsequence
377	Combination Sum Iv
378	Kth Smallest Element In A Sorted Matrix
379	Design Phone Directory
380	Insert Delete Getrandom O1
381	Insert Delete Getrandom O1 Duplicates Allowed
382	Linked List Random Node
383	Ransom Note
384	Shuffle An Array
385	Mini Parser
386	Lexicographical Numbers
387	First Unique Character In A String
388	Longest Absolute File Path
389	Find The Difference
390	Elimination Game
391	Perfect Rectangle
392	Is Subsequence
393	Utf 8 Validation
394	Decode String
395	Longest Substring With At Least K Repeating Characters
396	Rotate Function
397	Integer Replacement
398	Random Pick Index
399	Evaluate Division
400	Nth Digit
401	Binary Watch
402	Remove K Digits
403	Frog Jump
404	Sum Of Left Leaves
405	Convert A Number To Hexadecimal
406	Queue Reconstruction By Height
407	Trapping Rain Water II
408	Valid Word Abbreviation
409	Longest Palindrome
410	Split Array Largest Sum
411	Minimum Unique Word Abbreviation
412	Fizz Buzz
413	Arithmetic Slices
414	Third Maximum Number
415	Add Strings
416	Partition Equal Subset Sum
417	Pacific Atlantic Water Flow
418	Sentence Screen Fitting
419	Battleships In A Board
420	Strong Password Checker
421	Maximum Xor Of Two Numbers In An Array
422	Valid Word Square
423	Reconstruct Original Digits From English
424	Longest Repeating Character Replacement
425	Word Squares
426	Convert Binary Search Tree To Sorted Doubly Linked List
427	Construct Quad Tree
428	Serialize And Deserialize N Ary Tree
429	N Ary Tree Level Order Traversal
430	Flatten A Multilevel Doubly Linked List
431	Encode N Ary Tree To Binary Tree
432	All Oone Data Structure
433	Minimum Genetic Mutation
434	Number Of Segments In A String
435	Non Overlapping Intervals
436	Find Right Interval
437	Path Sum III
438	Find All Anagrams In A String
439	Ternary Expression Parser
440	K Th Smallest In Lexicographical Order
441	Arranging Coins
442	Find All Duplicates In An Array
443	String Compression
444	Sequence Reconstruction
445	Add Two Numbers II
446	Arithmetic Slices II Subsequence
447	Number Of Boomerangs
448	Find All Numbers Disappeared In An Array
449	Serialize And Deserialize Bst
450	Delete Node In A Bst
451	Sort Characters By Frequency
452	Minimum Number Of Arrows To Burst Balloons
453	Minimum Moves To Equal Array Elements
454	4sum II
455	Assign Cookies
456	132 Pattern
457	Circular Array Loop
458	Poor Pigs
459	Repeated Substring Pattern
460	Lfu Cache
461	Hamming Distance
462	Minimum Moves To Equal Array Elements II
463	Island Perimeter
464	Can I Win
465	Optimal Account Balancing
466	Count The Repetitions
467	Unique Substrings In Wraparound String
468	Validate Ip Address
469	Convex Polygon
470	Implement Rand10 Using Rand7
471	Encode String With Shortest Length
472	Concatenated Words
473	Matchsticks To Square
474	Ones And Zeroes
475	Heaters
476	Number Complement
477	Total Hamming Distance
478	Generate Random Point In A Circle
479	Largest Palindrome Product
480	Sliding Window Median
481	Magical String
482	License Key Formatting
483	Smallest Good Base
484	Find Permutation
485	Max Consecutive Ones
486	Predict The Winner
487	Max Consecutive Ones II
488	Zuma Game
489	Robot Room Cleaner
490	The Maze
491	Non Decreasing Subsequences
492	Construct The Rectangle
493	Reverse Pairs
494	Target Sum
495	Teemo Attacking
496	Next Greater Element I
497	Random Point In Non Overlapping Rectangles
498	Diagonal Traverse
499	The Maze III
500	Keyboard Row
501	Find Mode In Binary Search Tree
502	Ipo
503	Next Greater Element II
504	Base 7
505	The Maze II
506	Relative Ranks
507	Perfect Number
508	Most Frequent Subtree Sum
509	Fibonacci Number
510	Inorder Successor In Bst II
511	Game Play Analysis I
512	Game Play Analysis II
513	Find Bottom Left Tree Value
514	Freedom Trail
515	Find Largest Value In Each Tree Row
516	Longest Palindromic Subsequence
517	Super Washing Machines
518	Coin Change II
519	Random Flip Matrix
520	Detect Capital
521	Longest Uncommon Subsequence I
522	Longest Uncommon Subsequence II
523	Continuous Subarray Sum
524	Longest Word In Dictionary Through Deleting
525	Contiguous Array
526	Beautiful Arrangement
527	Word Abbreviation
528	Random Pick With Weight
529	Minesweeper
530	Minimum Absolute Difference In Bst
531	Lonely Pixel I
532	K Diff Pairs In An Array
533	Lonely Pixel II
534	Game Play Analysis III
535	Encode And Decode Tinyurl
536	Construct Binary Tree From String
537	Complex Number Multiplication
538	Convert Bst To Greater Tree
539	Minimum Time Difference
540	Single Element In A Sorted Array
541	Reverse String II
542	01 Matrix
543	Diameter Of Binary Tree
544	Output Contest Matches
545	Boundary Of Binary Tree
546	Remove Boxes
547	Number Of Provinces
548	Split Array With Equal Sum
549	Binary Tree Longest Consecutive Sequence II
550	Game Play Analysis IV
551	Student Attendance Record I
552	Student Attendance Record II
553	Optimal Division
554	Brick Wall
555	Split Concatenated Strings
556	Next Greater Element III
557	Reverse Words In A String III
558	Logical Or Of Two Binary Grids Represented As Quad Trees
559	Maximum Depth Of N Ary Tree
560	Subarray Sum Equals K
561	Array Partition
562	Longest Line Of Consecutive One In Matrix
563	Binary Tree Tilt
564	Find The Closest Palindrome
565	Array Nesting
566	Reshape The Matrix
567	Permutation In String
568	Maximum Vacation Days
569	Median Employee Salary
570	Managers with at Least 5 Direct Reports
571	Find Median Given Frequency of Numbers
572	Subtree Of Another Tree
573	Squirrel Simulation
574	Winning Candidate
575	Distribute Candies
576	Out Of Boundary Paths
577	Employee Bonus
578	Get Highest Answer Rate Question
579	Find Cumulative Salary of an Employee
580	Count Student Number in Departments
581	Shortest Unsorted Continuous Subarray
582	Kill Process
583	Delete Operation For Two Strings
584	Find Customer Referee
585	Investments in 2016
586	Customer Placing the Largest Number of Orders
587	Erect The Fence
588	Design In Memory File System
589	N Ary Tree Preorder Traversal
590	N Ary Tree Postorder Traversal
591	Tag Validator
592	Fraction Addition And Subtraction
593	Valid Square
594	Longest Harmonious Subsequence
595	Big Countries
596	Classes With at Least 5 Students
597	Friend Requests I Overall Acceptance Rate
598	Range Addition II
599	Minimum Index Sum Of Two Lists
600	Non Negative Integers Without Consecutive Ones
601	Human Traffic of Stadium
602	Friend Requests II - Who has the Most Friend
603	Consecutive Available Seats
604	Design Compressed String Iterator
605	Can Place Flowers
606	Construct String From Binary Tree
607	Sales Person
608	Tree Node
609	Find Duplicate File In System
610	Triangle Judgement
611	Valid Triangle Number
612	Shortest Distance in a Plane
613	Shortest Distance in a Line
614	Second Degree Follower
615	Average Salary: Departments VS Company
616	Add Bold Tag In String
617	Merge Two Binary Trees
618	Students Report by Geography
619	Biggest Single Number
620	Not Boring Movies
621	Task Scheduler
622	Design Circular Queue
623	Add One Row To Tree
624	Maximum Distance In Arrays
625	Minimum Factorization
626	Exchange Seats
627	Swap Sex of Employees
628	Maximum Product Of Three Numbers
629	K Inverse Pairs Array
630	Course Schedule III
631	Design Excel Sum Formula
632	Smallest Range Covering Elements From K Lists
633	Sum Of Square Numbers
634	Find The Derangement Of An Array
635	Design Log Storage System
636	Exclusive Time Of Functions
637	Average Of Levels In Binary Tree
638	Shopping Offers
639	Decode Ways II
640	Solve The Equation
641	Design Circular Deque
642	Design Search Autocomplete System
643	Maximum Average Subarray I
644	Maximum Average Subarray II
645	Set Mismatch
646	Maximum Length Of Pair Chain
647	Palindromic Substrings
649	Dota2 Senate
648	Replace Words
650	2 Keys Keyboard
652	Find Duplicate Subtrees
651	4 Keys Keyboard
653	Two Sum Iv Input Is A Bst
654	Maximum Binary Tree
655	Print Binary Tree
656	Coin Path
657	Robot Return To Origin
658	Find K Closest Elements
659	Split Array Into Consecutive Subsequences
660	Remove 9
661	Image Smoother
662	Maximum Width Of Binary Tree
663	Equal Tree Partition
664	Strange Printer
665	Non Decreasing Array
666	Path Sum Iv
667	Beautiful Arrangement II
668	Kth Smallest Number In Multiplication Table
669	Trim A Binary Search Tree
670	Maximum Swap
671	Second Minimum Node In A Binary Tree
672	Bulb Switcher II
673	Number Of Longest Increasing Subsequence
674	Longest Continuous Increasing Subsequence
675	Cut Off Trees For Golf Event
676	Implement Magic Dictionary
677	Map Sum Pairs
678	Valid Parenthesis String
679	24 Game
680	Valid Palindrome II
681	Next Closest Time
682	Baseball Game
683	K Empty Slots
684	Redundant Connection
685	Redundant Connection II
686	Repeated String Match
687	Longest Univalue Path
688	Knight Probability In Chessboard
689	Maximum Sum Of 3 Non Overlapping Subarrays
690	Employee Importance
691	Stickers To Spell Word
692	Top K Frequent Words
693	Binary Number With Alternating Bits
694	Number Of Distinct Islands
695	Max Area Of Island
696	Count Binary Substrings
697	Degree Of An Array
698	Partition To K Equal Sum Subsets
699	Falling Squares
700	Search In A Binary Search Tree
701	Insert Into A Binary Search Tree
702	Search In A Sorted Array Of Unknown Size
703	Kth Largest Element In A Stream
704	Binary Search
705	Design Hashset
706	Design Hashmap
707	Design Linked List
708	Insert Into A Sorted Circular Linked List
709	To Lower Case
710	Random Pick With Blacklist
711	Number Of Distinct Islands II	
712	Minimum Ascii Delete Sum For Two Strings
713	Subarray Product Less Than K
714	Best Time To Buy And Sell Stock With Transaction Fee
715	Range Module
716	Max Stack
717	1 Bit And 2 Bit Characters
718	Maximum Length Of Repeated Subarray
719	Find K Th Smallest Pair Distance
720	Longest Word In Dictionary
721	Accounts Merge
722	Remove Comments
723	Candy Crush
724	Find Pivot Index
725	Split Linked List In Parts
726	Number Of Atoms
727	Minimum Window Subsequence
728	Self Dividing Numbers
729	My Calendar I
730	Count Different Palindromic Subsequences
731	My Calendar Ii
732	My Calendar Iii
733	Flood Fill
734	Sentence Similarity
735	Asteroid Collision
736	Parse Lisp Expression
737	Sentence Similarity Ii
738	Monotone Increasing Digits
739	Daily Temperatures
740	Delete And Earn
741	Cherry Pickup
742	Closest Leaf In A Binary Tree
743	Network Delay Time
744	Find Smallest Letter Greater Than Target
745	Prefix And Suffix Search
746	Min Cost Climbing Stairs
747	Largest Number At Least Twice Of Others
748	Shortest Completing Word
749	Contain Virus
750	Number Of Corner Rectangles
751	Ip To Cidr
752	Open The Lock
753	Cracking The Safe
754	Reach A Number
755	Pour Water
756	Pyramid Transition Matrix
757	Set Intersection Size At Least Two
758	Bold Words In String
759	Employee Free Time
760	Find Anagram Mappings
761	Special Binary String
762	Prime Number of Set Bits in Binary Representation
763	Partition Labels
764	Largest Plus Sign
765	Couples Holding Hands
766	Toeplitz Matrix
767	Reorganize String
768	Max Chunks To Make Sorted II
769	Max Chunks To Make Sorted
770	Basic Calculator Iv
771	Jewels And Stones
772	Basic Calculator Iii
773	Sliding Puzzle
774	Minimize Max Distance To Gas Station
775	Global And Local Inversions
776	Split Bst
777	Swap Adjacent In Lr String
778	Swim In Rising Water
779	K Th Symbol In Grammar
780	Reaching Points
781	Rabbits In Forest
782	Transform To Chessboard
783	Minimum Distance Between Bst Nodes
784	Letter Case Permutation
785	Is Graph Bipartite
786	K Th Smallest Prime Fraction
787	Cheapest Flights Within K Stops
788	Rotated Digits
789	Escape The Ghosts
790	Domino And Tromino Tiling
791	Custom Sort String
792	Number Of Matching Subsequences
793	Preimage Size Of Factorial Zeroes Function
794	Valid Tic Tac Toe State
795	Number Of Subarrays With Bounded Maximum
796	Rotate String
797	All Paths From Source To Target
798	Smallest Rotation With Highest Score
799	Champagne Tower
800	Similar Rgb Color
801	Minimum Swaps To Make Sequences Increasing
802	Find Eventual Safe States
803	Bricks Falling When Hit
804	Unique Morse Code Words
805	Split Array With Same Average
806	Number Of Lines To Write String
807	Max Increase To Keep City Skyline
808	Soup Servings
809	Expressive Words
810	Chalkboard Xor Game
811	Subdomain Visit Count
812	Largest Triangle Area
813	Largest Sum Of Averages
814	Binary Tree Pruning
815	Bus Routes
816	Ambiguous Coordinates
817	Linked List Components
818	Race Car
819	Most Common Word
820	Short Encoding Of Words
821	Shortest Distance To A Character
822	Card Flipping Game
823	Binary Trees With Factors
824	Goat Latin
825	Friends Of Appropriate Ages
826	Most Profit Assigning Work
827	Making A Large Island
828	Count Unique Characters Of All Substrings Of A Given String
829	Consecutive Numbers Sum
830	Positions Of Large Groups
831	Masking Personal Information
832	Flipping An Image
833	Find And Replace In String
834	Sum Of Distances In Tree
835	Image Overlap
836	Rectangle Overlap
837	New 21 Game
838	Push Dominoes
839	Similar String Groups
840	Magic Squares In Grid
841	Keys And Rooms
865	Smallest Subtree with all the Deepest Nodes
868	Binary Gap
944	Delete Columns to Make Sorted
955	Delete Columns to Make Sorted II
960	Delete Columns to Make Sorted III
961	N-Repeated Element in Size 2N Array
1022	Sum of Root To Leaf Binary Numbers
1161	Maximum Level Sum of a Binary Tree
1200	Minimum Absolute Difference
1266	Minimum Time Visiting All Points
1292	Maximum Side Length of a Square with Sum Less than or Equal to Threshold
1339	Maximum Product of Splitted Binary Tree
1351	Count Negative Numbers in a Sorted Matrix
1356	Sort Integers by The Number of 1 Bits
1382	Balance a Binary Search Tree
1390	Four Divisors
1404	Number of Steps to Reduce a Number in Binary Representation to One
1411	Number of Ways to Paint N × 3 Grid
1458	Max Dot Product of Two Subsequences
1461	Check If a String Contains All Binary Codes of Size K
1536	Minimum Swaps to Arrange a Binary Grid
1545	Find Kth Bit in Nth Binary String
1582	Special Positions in a Binary Matrix
1653	Minimum Deletions to Make String Balanced
1680	Concatenation of Consecutive Binary Numbers
1689	Partitioning Into Minimum Number Of Deci-Binary Numbers
1877	Minimize Maximum Pair Sum in Array
1895	Largest Magic Square
1970	Last Day Where You Can Still Cross
1975	Maximum Matrix Sum
1984	Minimum Difference Between Highest and Lowest of K Scores
2054	Two Best Non-Overlapping Events
2402	Meeting Rooms III
2483	Minimum Penalty for a Shop
2943	Maximize Area of Square Hole in Grid
2975	Maximum Square Area by Removing Fences From a Field
2976	Minimum Cost to Convert String I
2977	Minimum Cost to Convert String II
3010	Divide an Array Into Subarrays With Minimum Cost I
3047	Find the Largest Area of Square Inside Two Rectangles
3074	Apple Redistribution into Boxes
3075	Maximize Happiness of Selected Children
3260	Divide an Array Into Subarrays With Minimum Cost II
3314	Construct the Minimum Bitwise Array I
3315	Construct the Minimum Bitwise Array II
3379	Transformed Array
3453	Separate Squares I
3454	Separate Squares II
3507	Minimum Pair Removal to Sort Array I
3510	Minimum Pair Removal to Sort Array II
3634	Minimum Removals to Balance Array
3637	Trionic Array I
3640	Trionic Array II
3650	Minimum Cost Path with Edge Reversals
3651	Minimum Cost Path with Teleportations
3666	Minimum Operations to Equalize Binary String
3713	Longest Balanced Substring I
3714	Longest Balanced Substring II
3719	Longest Balanced Subarray I
3721	Longest Balanced Subarray II

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