LeetCode

LeetCode Solutions in Python, Java and C++

#	Title	Python	Java	C++	Difficulty
001	Two Sum	Python	Java	C++	Easy
002	Add Two Numbers	Python	Java	C++	Medium
003	Longest Substring Without Repeating Characters	Python	Java	C++	Medium
004	Median of Two Sorted Arrays	Python	Java	C++	Hard
005	Longest Palindromic Substring	Python	Java	C++	Medium
006	ZigZag Conversion	Python	Java	C++	Medium
007	Reverse Integer	Python	Java	C++	Easy
008	String to Integer	Python	Java	C++	Medium
009	Palindrome Number	Python	Java	C++	Easy
010	Regular Expression Matching	Python	Java	C++	Hard
011	Container With Most Water	Python	Java	C++	Medium
012	Integer to Roman	Python	Java	C++	Medium
013	Roman to Integer	Python	Java	C++	Easy
014	Longest Common Prefix	Python	Java	C++	Easy
015	3Sum	Python	Java	C++	Medium
016	3Sum Closest	Python	Java	C++	Medium
017	Letter Combinations of a Phone Number	Python	Java	C++	Medium
018	4Sum	Python	Java	C++	Medium
019	Remove Nth Node From End of List	Python	Java	C++	Medium
020	Valid Parentheses	Python	Java	C++	Easy
021	Merge Two Sorted Lists	Python	Java	C++	Easy
022	Generate Parentheses	Python	Java	C++	Medium
023	Merge k Sorted Lists	Python	Java	C++	Hard
024	Swap Nodes in Pairs	Python	Java	C++	Medium
025	Reverse Nodes in k-Group	Python	Java	C++	Hard
026	Remove Duplicates from Sorted Array	Python	Java	C++	Easy
027	Remove Element	Python	Java	C++	Easy
028	Implement strStr()	Python	Java	C++	Easy
029	Divide Two Integers	Python	Java	C++	Medium
030	Substring with Concatenation of All Words	Python	Java	C++	Hard
031	Next Permutation	Python	Java	C++	Medium
032	Longest Valid Parentheses	Python	Java	C++	Hard
033	Search in Rotated Sorted Array	Python	Java	C++	Medium
034	Find First and Last Position of Element in Sorted Array	Python	Java	C++	Medium
035	Search Insert Position	Python	Java	C++	Easy
036	Valid Sudoku	Python	Java	C++	Medium
037	Sudoku Solver	Python	Java	C++	Hard
038	Count and Say	Python	Java	C++	Easy
039	Combination Sum	Python	Java	C++	Medium
040	Combination Sum II	Python	Java	C++	Medium
041	First Missing Positive	Python	Java	C++	Hard
042	Trapping Rain Water	Python	Java	C++	Hard
043	Multiply Strings	Python	Java	C++	Medium
044	Wildcard Matching	Python	Java	C++	Hard
045	Jump Game II	Python	Java	C++	Hard
046	Permutations	Python	Java	C++	Medium
047	Permutaions II	Python	Java	C++	Medium
048	Rotate Image	Python	Java	C++	Medium
049	Group Anagrams	Python	Java	C++	Medium
050	Pow(x, n)	Python	Java	C++	Medium
051	N-Queens	Python	Java	C++	Hard
052	N-Queens II	Python	Java	C++	Hard
053	Maximum Subarray	Python	Java	C++	Easy
054	Spiral Matrix	Python	Java	C++	Medium
055	Jump Game	Python	Java	C++	Medium
056	Merge Intervals	Python	Java	C++	Medium
057	Insert Interval	Python			Hard
058	Length of Last Word	Python			Easy
059	Spiral Matrix II	Python			Medium
060	Permutation Sequence	Python			Medium
061	Rotate List	Python			Medium
062	Unique Paths	Python			Medium
063	Unique Paths II	Python			Medium
064	Minimum Path Sum	Python			Medium
065	Valid Number	Python			Hard
066	Plus One	Python			Easy
067	Add Binary	Python			Easy
068	Text Justification	Python			Hard
069	Sqrt(x)	Python			Easy
070	Climbing Stairs	Python			Easy
071	Simplify Path	Python			Medium
072	Edit Distance	Python			Hard
073	Set Matrix Zeroes	Python			Medium
074	Search a 2D Matrix	Python			Medium
075	Sort Colors	Python	Java	C++	Medium
076	Minimum Window Substring	Python			Hard
077	Combinations	Python			Medium
078	Subsets	Python	Java	C++	Medium
079	Word Search	Python	Java	C++	Medium
080	Remove Duplicates from Sorted Array II	Python			Medium
081	Search in Rotated Sorted Array II	Python			Medium
082	Remove Duplicates from Sorted List II	Python			Medium
083	Remove Duplicates from Sorted List	Python			Easy
084	Largest Rectangle in Histogram	Python			Hard
085	Maximal Rectangle	Python			Hard
086	Partition List	Python			Medium
087	Scramble String	Python			Hard
088	Merge Sorted Array	Python			Easy
089	Gray Code	Python			Medium
090	Subsets II	Python			Medium
091	Decode Ways	Python			Medium
092	Reverse Linked List II	Python			Medium
093	Restore IP Addresses	Python			Medium
094	Binary Tree Inorder Traversal	Python	Java	C++	Medium
095	Unique Binary Search Trees II	Python			Medium
096	Unique Binary Search Trees	Python			Medium
097	Interleaving String	Python			Hard
098	Validate Binary Search Tree	Python			Medium
099	Recover Binary Search Tree	Python			Hard
100	Same Tree	Python			Easy
101	Symmetric Tree	Python			Easy
102	Binary Tree Level Order Traversal	Python			Medium
103	Binary Tree Zigzag Level Order Traversal	Python			Medium
104	Maximum Depth of Binary Tree	Python			Easy
105	Construct Binary Tree from Preorder and Inorder Traversal	Python			Medium
106	Construct Binary Tree from Inorder and Postorder Traversal	Python	Java	C++	Medium
107	Binary Tree Level Order Traversal II	Python			Easy
108	Convert Sorted Array to Binary Search Tree	Python			Easy
109	Convert Sorted List to Binary Search Tree	Python			Medium
110	Balanced Binary Tree	Python			Easy
111	Minimum Depth of Binary Tree	Python			Easy
112	Path Sum	Python	Java	C++	Easy
113	Path Sum II	Python	Java	C++	Medium
114	Flatten Binary Tree to Linked List	Python			Medium
115	Distinct Subsequences	Python			Hard
116	Populating Next Right Pointers in Each Node	Python			Medium
117	Populating Next Right Pointers in Each Node II	Python			Medium
118	Pascal's Triangle	Python			Easy
119	Pascal's Triangle II	Python			Easy
120	Triangle	Python			Medium
121	Best Time to Buy and Sell Stock	Python			Easy
122	Best Time to Buy and Sell Stock II	Python			Easy
123	Best Time to Buy and Sell Stock III	Python			Hard
124	Binary Tree Maximum Path Sum	Python			Hard
125	Valid Palindrome	Python			Easy
126	Word Ladder II	Python			Hard
127	Word Ladder	Python			Medium
128	Longest Consecutive Sequence	Python			Hard
129	Sum Root to Leaf Numbers	Python			Medium
130	Surrounded Regions	Python			Medium
131	Palindrome Partitioning	Python			Medium
132	Palindrome Partitioning II	Python			Hard
133	Clone Graph	Python			Medium
134	Gas Station	Python			Medium
135	Candy	Python			Hard
136	Single Number	Python			Easy
137	Single Number II	Python			Medium
138	Copy List with Random Pointer	Python			Medium
139	Word Break	Python			Medium
140	Word Break II	Python			Hard
141	Linked List Cycle	Python			Easy
142	Linked List Cycle II	Python			Medium
143	Reorder List	Python			Medium
144	Binary Tree Preorder Traversal	Python			Medium
145	Binary Tree Postorder Traversal	Python			Medium
146	LRU Cache	Python			Medium
147	Insertion Sort List	Python			Medium
148	Sort List	Python			Medium
149	Max Points on a Line	Python			Hard
150	Evaluate Reverse Polish Notation	Python			Medium
151	Reverse Words in a String	Python			Medium
152	Maximum Product Subarray	Python			Medium
153	Find Minimum in Rotated Sorted Array	Python			Medium
154	Find Minimum in Rotated Sorted Array II	Python			Medium
155	Min Stack	Python			Easy
160	Intersection of Two Linked Lists	Python			Easy
162	Find Peak Element	Python			Medium
164	Maximum Gap	Python			Hard
165	Compare Version Numbers	Python			Medium
166	Fraction to Recurring Decimal	Python			Medium
167	Two Sum II - Input array is sorted	Python			Easy
168	Excel Sheet Column Title	Python	Java	C++	Easy
169	Majority Element	Python			Easy
171	Excel Sheet Column Number	Python			Easy
172	Factorial Trailing Zeroes	Python			Easy
173	Binary Search Tree Iterator	Python			Medium
174	Dungeon Game	Python			Hard
179	Largest Number	Python			Medium
187	Repeated DNA Sequences	Python			Medium
188	Best Time to Buy and Sell Stock IV	Python			Hard
189	Rotate Array	Python			Easy
190	Reverse Bits	Python			Easy
191	Number of 1 Bits	Python			Easy
198	House Robber	Python			Easy
199	Binary Tree Right Side View	Python			Medium
200	Number of Islands	Python			Medium
203	Remove Linked List Elements	Python	Java	C++	Easy
202	Happy Number	Python			Easy
204	Count Primes	Python			Easy
205	Isomorphic Strings	Python			Easy
206	Reverse Linked List	Python			Easy
207	Course Schedule	Python			Medium
208	Implement Trie (Prefix Tree)	Python			Medium
210	Course Schedule II	Python			Medium
211	Design Add and Search Words Data Structure	Python			Medium
212	Word Search II	Python			Hard
213	House Robber II	Python			Medium
215	Kth Largest Element in an Array	Python			Medium
216	Combination Sum III	Python			Medium
217	Contains Duplicate	Python			Easy
219	Contains Duplicate II	Python			Easy
220	Contains Duplicate III	Python			Medium
221	Maximal Square	Python			Medium
222	Count Complete Tree Nodes	Python			Medium
223	Rectangle Area	Python			Medium
224	Basic Calculator	Python			Hard
226	Invert Binary Tree	Python	Java	C++	Easy
228	Summary Ranges	Python			Easy
229	Majority Element II	Python			Medium
230	Kth Smallest Element in a BST	Python			Easy
231	Power of Two	Python			Easy
232	Implement Queue using Stacks	Python			Easy
233	Number of Digit One	Python			Hard
234	Palindrome Linked List	Python			Easy
235	Lowest Common Ancestor of a Binary Search Tree	Python			Easy
236	Lowest Common Ancestor of a Binary Tree	Python			Medium
237	Delete Node in a Linked List	Python			Easy
238	Product of Array Except Self	Python			Medium
239	Sliding Window Maximum	Python			Hard
240	Search a 2D Matrix II	Python			Medium
241	Different Ways to Add Parentheses	Python			Hard
242	Valid Anagram	Python			Easy
253	Meeting Rooms II	Python			Medium
256	Paint House	Python			Medium
257	Binary Tree Paths	Python			Easy
258	Add Digits	Python			Easy
260	Single Number III	Python			Medium
264	Ugly Number II	Python			Medium
265	Paint House II	Python			Hard
268	Missing Number	Python			Easy
273	Integer to English Words	Python			Hard
274	H-Index	Python	Java	C++	Medium
275	H-Index II	Python	Java	C++	Medium
278	First Bad Version	Python			Easy
279	Perfect Squares	Python			Medium
282	Expression Add Operators	Python			Hard
283	Move Zeroes	Python			Easy
284	Peeking Iterator	Python			Medium
287	Find the Duplicate Number	Python			Medium
290	Word Pattern	Python			Easy
292	Nim Game	Python			Easy
295	Find Median from Data Stream	Python			Hard
297	Serialize and Deserialize Binary Tree	Python	Java	C++	Hard
299	Bulls and Cows	Python			Medium
300	Longest Increasing Subsequence	Python			Medium
301	Remove Invalid Parentheses	Python			Hard
303	Range Sum Query - Immutable	Python			Easy
304	Range Sum Query 2D - Immutable	Python			Medium
306	Additive Number	Python			Medium
307	Range Sum Query - Mutable	Python			Medium
309	Best Time to Buy and Sell Stock with Cooldown	Python			Medium
310	Minimum Height Trees	Python			Medium
312	Burst Balloons	Python			Hard
313	Super Ugly Number	Python			Medium
315	Count of Smaller Numbers After Self	Python			Hard
316	Remove Duplicate Letters	Python			Medium
318	Maximum Product of Word Lengths	Python			Medium
319	Bulb Switcher	Python			Easy
321	Create Maximum Number	Python			Hard
322	Coin Change	Python			Medium
324	Wiggle Sort II	Python			Medium
326	Power of Three	Python			Medium
327	Count of Range Sum	Python			Hard
328	Odd Even Linked List	Python			Medium
330	Patching Array	Python			Hard
334	Increasing Triplet Subsequence	Python			Easy
335	Self Crossing	Python			Hard
337	House Robber III	Python			Medium
338	Counting Bits	Python			Medium
341	Flatten Nested List Iterator	Python			Easy
343	Integer Break	Python			Medium
344	Reverse String	Python	Java	C++	Easy
345	Reverse Vowels of a String	Python			Easy
347	Top K Frequent Elements	Python			Medium
349	Intersection of Two Arrays	Python			Easy
350	Intersection of Two Arrays II	Python			Easy
352	Data Stream as Disjoint Intervals	Python			Hard
354	Russian Doll Envelopes	Python			Hard
357	Count Numbers with Unique Digits	Python			Medium
363	Max Sum of Rectangle No Larger Than K	Python			Hard
367	Valid Perfect Square	Python			Easy
371	Sum of Two Integers	Python			Easy
372	Super Pow	Python			Medium
373	Find K Pairs with Smallest Sums	Python			Medium
375	Guess Number Higher or Lower II	Python			Medium
376	Wiggle Subsequence	Python			Medium
377	Combination Sum IV	Python			Medium
380	Insert Delete GetRandom O(1)	Python			Medium
381	Insert Delete GetRandom O(1) - Duplicates allowed	Python			Hard
382	Linked List Random Node	Python			Medium
383	Ransom Note	Python			Easy
384	Shuffle an Array	Python			Medium
385	Mini Parser	Python			Medium
386	Lexicographical Numbers	Python			Medium
387	First Unique Character in a String	Python			Easy
388	Longest Absolute File Path	Python			Medium
389	Find the Difference	Python			Easy
390	Elimination Game	Python			Medium
391	Perfect Rectangle	Python			Hard
392	Is Subsequence	Python			Easy
393	UTF-8 Validation	Python			Medium
394	Decode String	Python			Medium
395	Longest Substring with At Least K Repeating Characters	Python			Medium
396	Rotate Function	Python			Medium
397	Integer Replacement	Python			Medium
398	Random Pick Index	Python			Medium
399	Evaluate Division	Python			Medium
400	Nth Digit	Python			Medium
401	Binary Watch	Python	Java	C++	Easy
402	Remove K Digits	Python			Medium
404	Sum of Left Leaves	Python			Easy
405	Convert a Number to Hexadecimal	Python			Easy
406	Queue Reconstruction by Height	Python			Medium
407	Trapping Rain Water II	Python			Hard
412	Fizz Buzz	Python			Easy
413	Arithmetic Slices	Python			Medium
414	Third Maximum Number	Python			Easy
415	Add Strings	Python			Easy
416	Partition Equal Subset Sum	Python			Medium
417	Pacific Atlantic Water Flow	Python			Medium
419	Battleships in a Board	Python			Medium
420	Strong Password Checker	Python			Hard
421	Maximum XOR of Two Numbers in an Array	Python			Medium
423	Reconstruct Original Digits from English	Python			Medium
424	Longest Repeating Character Replacement	Python			Medium
426	Convert Binary Search Tree to Sorted Doubly Linked List	Python			Medium
427	Construct Quad Tree	Python			Medium
429	N-ary Tree Level Order Traversal	Python			Medium
430	Flatten a Multilevel Doubly Linked List	Python			Medium
432	All O`one Data Structure	Python			Hard
433	Minimum Genetic Mutation	Python			Medium
434	Number of Segments in a String	Python			Easy
435	Non-overlapping Intervals	Python			Medium
436	Find Right Interval	Python			Medium
437	Path Sum III	Python			Medium
438	Find All Anagrams in a String	Python			Medium
440	K-th Smallest in Lexicographical Order	Python			Hard
441	Arranging Coins	Python			Easy
442	Find All Duplicates in an Array	Python			Medium
443	String Compression	Python			Medium
445	Add Two Numbers II	Python			Medium
446	Arithmetic Slices II - Subsequence	Python			Hard
447	Number of Boomerangs	Python			Medium
448	Find All Numbers Disappeared in an Array	Python			Easy
449	Serialize and Deserialize BST	Python			Medium
450	Delete Node in a BST	Python			Medium
451	Sort Characters By Frequency	Python	Java	C++	Easy
452	Minimum Number of Arrows to Burst Balloons	Python			Medium
453	Minimum Moves to Equal Array Elements	Python			Easy
454	4Sum II	Python			Medium
455	Assign Cookies	Python			Easy
457	Circular Array Loop	Python			Medium
458	Poor Pigs	Python			Hard
459	Repeated Substring Pattern	Python			Easy
460	LFU Cache	Python			Hard
461	Hamming Distance	Python			Easy
462	Minimum Moves to Equal Array Elements II	Python			Medium
463	Island Perimeter	Python			Easy
464	Can I Win	Python			Medium
467	Unique Substrings in Wraparound String	Python			Medium
468	Validate IP Address	Python			Medium
470	Implement Rand10() Using Rand7()	Python			Medium
472	Concatenated Words	Python			Hard
473	Matchsticks to Square	Python			Medium
474	Ones and Zeroes	Python	Java	C++	Medium
475	Heaters	Python			Medium
476	Number Complement	Python			Easy
478	Generate Random Point in a Circle	Python			Medium
479	Largest Palindrome Product	Python			Hard
480	Sliding Window Median	Python			Hard
481	Magical String	Python			Medium
482	License Key Formatting	Python			Easy
485	Max Consecutive Ones	Python			Easy
488	Zuma Game	Python			Hard
492	Construct the Rectangle	Python			Easy
493	Reverse Pairs	Python			Hard
494	Target Sum	Python			Medium
495	Teemo Attacking	Python			Easy
496	Next Greater Element I	Python			Easy
497	Random Point in Non-overlapping Rectangles	Python			Medium
498	Diagonal Traverse	Python			Easy
500	Keyboard Row	Python			Easy
501	Find Mode in Binary Search Tree	Python	Java	C++	Easy
502	IPO	Python			Hard
503	Next Greater Element II	Python			Medium
504	Base 7	Python			Easy
506	Relative Ranks	Python			Easy
507	Perfect Number	Python			Easy
508	Most Frequent Subtree Sum	Python			Medium
509	Fibonacci Number	Python			Easy
513	Find Bottom Left Tree Value	Python			Medium
514	Freedom Trail	Python			Hard
515	Find Largest Value in Each Tree Row	Python			Medium
516	Longest Palindromic Subsequence	Python			Medium
517	Super Washing Machines	Python			Medium
518	Coin Change 2	Python			Medium
519	Random Flip Matrix	Python			Medium
520	Detect Capital	Python			Easy
521	Longest Uncommon Subsequence I	Python			Easy
522	Longest Uncommon Subsequence II	Python			Medium
524	Longest Word in Dictionary through Deleting	Python			Medium
526	Beautiful Arrangement	Python			Medium
528	Random Pick with Weight	Python			Medium
530	Minimum Absolute Difference in BST	Python			Easy
532	K-diff Pairs in an Array	Python			Medium
535	Encode and Decode TinyURL	Python			Medium
537	Complex Number Multiplication	Python			Medium
538	Convert BST to Greater Tree	Python	Java	C++	Easy
539	Minimum Time Difference	Python			Medium
540	Single Element in a Sorted Array	Python			Medium
541	Reverse String II	Python			Easy
542	01 Matrix	Python			Medium
543	Diameter of Binary Tree	Python			Easy
547	Number of Provinces	Python			Medium
551	Student Attendance Record I	Python			Easy
552	Student Attendance Record II	Python			Hard
553	Optimal Division	Python			Medium
556	Next Greater Element III	Python			Medium
557	Reverse Words in a String III	Python			Easy
558	Logical OR of Two Binary Grids Represented as Quad-Trees	Python			Medium
559	Maximum Depth of N-ary Tree	Python			Easy
560	Subarray Sum Equals K	Python			Medium
561	Array Partition I	Python			Easy
563	Binary Tree Tilt	Python			Easy
564	Find the Closest Palindrome	Python			Hard
565	Array Nesting	Python			Medium
566	Reshape the Matrix	Python			Easy
567	Permutation in String	Python			Medium
575	Distribute Candies	Python			Easy
576	Out of Boundary Paths	Python			Medium
581	Shortest Unsorted Continuous Subarray	Python			Medium
583	Delete Operation for Two Strings	Python			Medium
587	Erect the Fence	Python			Hard
590	N-ary Tree Postorder Traversal	Python			Easy
591	Tag Validator	Python			Hard
592	Fraction Addition and Subtraction	Python			Medium
593	Valid Square	Python			Medium
594	Longest Harmonious Subsequence	Python			Easy
598	Range Addition II	Python			Easy
599	Minimum Index Sum of Two Lists	Python			Easy
600	Non-negative Integers without Consecutive Ones	Python			Hard
605	Can Place Flowers	Python			Easy
606	Construct String from Binary Tree	Python			Easy
611	Valid Triangle Number	Python			Medium
617	Merge Two Binary Trees	Python	Java	C++	Easy
621	Task Scheduler	Python			Medium
622	Design Circular Queue	Python			Medium
623	Add One Row to Tree	Python			Medium
628	Maximum Product of Three Numbers	Python			Easy
629	K Inverse Pairs Array	Python			Hard
630	Course Schedule III	Python			Hard
636	Exclusive Time of Functions	Python			Medium
637	Average of Levels in Binary Tree	Python			Easy
638	Shopping Offers	Python			Medium
639	Decode Ways II	Python			Hard
640	Solve the Equation	Python			Medium
641	Design Circular Deque	Python			Medium
643	Maximum Average Subarray I	Python			Easy
645	Set Mismatch	Python	Java	C++	Easy
646	Maximum Length of Pair Chain	Python			Medium
647	Palindromic Substrings	Python			Medium
648	Replace Words	Python			Medium
649	Dota2 Senate	Python			Medium
650	2 Keys Keyboard	Python			Medium
652	Find Duplicate Subtrees	Python			Medium
653	Two Sum IV - Input is a BST	Python			Easy
654	Maximum Binary Tree	Python			Medium
655	Print Binary Tree	Python			Medium
658	Find K Closest Elements	Python			Medium
659	Split Array into Consecutive Subsequences	Python			Medium
661	Image Smoother	Python			Easy
662	Maximum Width of Binary Tree	Python			Medium
664	Strange Printer	Python			Hard
665	Non-decreasing Array	Python			Easy
667	Beautiful Arrangement II	Python			Medium
668	Kth Smallest Number in Multiplication Table	Python			Hard
669	Trim a Binary Search Tree	Python			Medium
670	Maximum Swap	Python			Medium
672	Bulb Switcher II	Python			Medium
673	Number of Longest Increasing Subsequence	Python			Medium
674	Longest Continuous Increasing Subsequence	Python			Easy
675	Cut Off Trees for Golf Event	Python			Hard
676	Implement Magic Dictionary	Python			Medium
677	Map Sum Pairs	Python			Medium
678	Valid Parenthesis String	Python			Medium
682	Redundant Connection	Python			Medium
684	Baseball Game	Python			Easy
685	Redundant Connection II	Python			Hard
686	Repeated String Match	Python			Medium
687	Longest Univalue Path	Python			Medium
688	Knight Probability in Chessboard	Python			Medium
689	Maximum Sum of 3 Non-Overlapping Subarrays	Python			Hard
691	Stickers to Spell Word	Python			Hard
693	Binary Number with Alternating Bits	Python			Easy
695	Max Area of Island	Python			Medium
697	Degree of an Array	Python			Easy
698	Partition to K Equal Sum Subsets	Python			Medium
699	Falling Squares	Python			Hard
700	Search in a Binary Search Tree	Python	Java	C++	Easy
701	Insert into a Binary Search Tree	Python	Java	C++	Medium
703	Kth Largest Element in a Stream	Python			Easy
704	Binary Search	Python			Easy
707	Design Linked List	Python			Medium
709	To Lower Case	Python			Easy
710	Random Pick with Blacklist	Python			Hard
713	Subarray Product Less Than K	Python			Medium
714	Best Time to Buy and Sell Stock with Transaction Fee	Python			Medium
715	Range Module	Python			Hard
717	1-bit and 2-bit Characters	Python			Easy
719	Find K-th Smallest Pair Distance	Python			Hard
720	Longest Word in Dictionary	Python			Easy
721	Accounts Merge	Python			Medium
722	Remove Comments	Python			Medium
724	Find Pivot Index	Python			Easy
725	Split Linked List in Parts	Python			Medium
726	Number of Atoms	Python	Java	C++	Hard
728	Self Dividing Numbers	Python			Medium
729	My Calendar I	Python			Medium
730	Count Different Palindromic Subsequences	Python			Hard
731	My Calendar II	Python			Medium
732	My Calendar III	Python			Hard
733	Flood Fill	Python			Easy
735	Asteroid Collision	Python			Medium
736	Parse Lisp Expression	Python			Hard
738	Monotone Increasing Digits	Python			Medium
739	Daily Temperatures	Python			Medium
740	Delete and Earn	Python			Medium
741	Cherry Pickup	Python			Hard
743	Network Delay Time	Python			Medium
744	Find Smallest Letter Greater Than Target	Python			Easy
745	Prefix and Suffix Search	Python			Hard
746	Min Cost Climbing Stairs	Python			Easy
747	Largest Number At Least Twice of Others	Python			Easy
748	Shortest Completing Word	Python			Easy
749	Contain Virus	Python			Hard
752	Open the Lock	Python	Java	C++	Medium
753	Cracking the Safe	Python			Hard
754	Reach a Number	Python			Medium
757	Set Intersection Size At Least Two	Python			Hard
761	Special Binary String	Python			Hard
762	Prime Number of Set Bits in Binary Representation	Python			Easy
763	Partition Labels	Python			Medium
764	Largest Plus Sign	Python			Medium
765	Couples Holding Hands	Python			Hard
766	Toeplitz Matrix	Python			Easy
767	Reorganize String	Python			Medium
768	Max Chunks To Make Sorted II	Python			Medium
769	Max Chunks To Make Sorted	Python			Medium
771	Jewels and Stones	Python	Java	C++	Easy
773	Sliding Puzzle	Python	Java	C++	Hard
775	Global and Local Inversions	Python			Medium
777	Swap Adjacent in LR String	Python			Medium
778	Swim in Rising Water	Python			Hard
779	K-th Symbol in Grammar	Python			Medium
780	Reaching Points	Python			Hard
782	Transform to Chessboard	Python			Hard
783	Minimum Distance Between BST Nodes	Python			Easy
784	Letter Case Permutation	Python			Medium
785	Is Graph Bipartite?	Python			Medium
786	K-th Smallest Prime Fraction	Python			Hard
787	Cheapest Flights Within K Stops	Python			Medium
788	Rotated Digits	Python			Medium
789	Escape The Ghosts	Python			Medium
790	Domino and Tromino Tiling	Python			Medium
791	Custom Sort String	Python			Medium
792	Number of Matching Subsequences	Python			Medium
793	Preimage Size of Factorial Zeroes Function	Python			Hard
794	Valid Tic-Tac-Toe State	Python			Medium
795	Number of Subarrays with Bounded Maximum	Python			Medium
796	Rotate String	Python			Easy
797	All Paths From Source to Target	Python			Medium
798	Smallest Rotation with Highest Score	Python			Medium
799	Champagne Tower	Python			Medium
801	Minimum Swaps To Make Sequences Increasing	Python			Hard
802	Find Eventual Safe States	Python			Medium
803	Bricks Falling When Hit	Python			Hard
804	Unique Morse Code Words	Python			Easy
805	Split Array With Same Average	Python			Medium
806	Number of Lines To Write String	Python			Easy
807	Max Increase to Keep City Skyline	Python			Medium
808	Soup Servings	Python			Medium
809	Expressive Words	Python			Medium
811	Subdomain Visit Count	Python			Medium
812	Largest Triangle Area	Python			Easy
813	Largest Sum of Averages	Python			Medium
814	Binary Tree Pruning	Python			Medium
815	Bus Routes	Python	Java	C++	Hard
816	Ambiguous Coordinates	Python			Medium
817	Linked List Components	Python			Medium
819	Most Common Word	Python			Easy
821	Shortest Distance to a Character	Python			Easy
822	Card Flipping Game	Python			Medium
823	Binary Trees With Factors	Python			Medium
824	Goat Latin	Python			Easy
825	Friends Of Appropriate Ages	Python			Medium
827	Making A Large Island	Python			Hard
828	Count Unique Characters of All Substrings of a Given String	Python			Hard
829	Consecutive Numbers Sum	Python			Hard
830	Positions of Large Groups	Python			Easy
831	Masking Personal Information	Python			Medium
832	Flipping an Image	Python			Easy
833	Find And Replace in String	Python			Medium
834	Sum of Distances in Tree	Python			Hard
838	Push Dominoes	Python			Medium
839	Similar String Groups	Python			Hard
842	Split Array into Fibonacci Sequence	Python			Medium
844	Backspace String Compare	Python			Easy
845	Longest Mountain in Array	Python			Medium
846	Hand of Straights	Python			Medium
847	Shortest Path Visiting All Nodes	Python			Hard
849	Maximize Distance to Closest Person	Python			Medium
850	Rectangle Area II	Python			Hard
851	Loud and Rich	Python			Medium
854	K-Similar Strings	Python			Hard
855	Exam Room	Python			Medium
856	Score of Parentheses	Python			Medium
857	Minimum Cost to Hire K Workers	Python			Hard
859	Buddy Strings	Python			Easy
860	Lemonade Change	Python			Easy
861	Score After Flipping Matrix	Python			Medium
862	Shortest Subarray with Sum at Least K	Python			Hard
864	Shortest Path to Get All Keys	Python			Hard
865	Smallest Subtree with all the Deepest Nodes	Python			Medium
867	Transpose Matrix	Python			Easy
868	Binary Gap	Python			Easy
869	Reordered Power of 2	Python			Medium
870	Advantage Shuffle	Python			Medium
871	Minimum Number of Refueling Stops	Python			Hard
873	Length of Longest Fibonacci Subsequence	Python			Medium
874	Walking Robot Simulation	Python			Medium
875	Koko Eating Bananas	Python			Medium
876	Middle of the Linked List	Python			Easy
878	Nth Magical Number	Python			Hard
881	Boats to Save People	Python			Medium
882	Reachable Nodes In Subdivided Graph	Python			Hard
883	Projection Area of 3D Shapes	Python			Easy
884	Uncommon Words from Two Sentences	Python			Easy
885	Spiral Matrix III	Python			Medium
886	Possible Bipartition	Python			Medium
888	Fair Candy Swap	Python			Easy
890	Find and Replace Pattern	Python			Medium
891	Sum of Subsequence Widths	Python			Hard
895	Maximum Frequency Stack	Python			Hard
896	Monotonic Array	Python			Easy
899	Orderly Queue	Python			Hard
901	Online Stock Span	Python			Medium
902	Numbers At Most N Given Digit Set	Python			Hard
904	Fruit Into Baskets	Python			Medium
905	Sort Array By Parity	Python			Easy
907	Sum of Subarray Minimums	Python			Medium
908	Smallest Range I	Python			Easy
909	Snakes and Ladders	Python	Java	C++	Medium
910	Smallest Range II	Python			Medium
911	Online Election	Python			Medium
913	Cat and Mouse	Python			Hard
915	Partition Array into Disjoint Intervals	Python			Medium
917	Reverse Only Letters	Python			Easy
918	Maximum Sum Circular Subarray	Python			Medium
919	Complete Binary Tree Inserter	Python			Medium
921	Minimum Add to Make Parentheses Valid	Python			Medium
922	Sort Array By Parity II	Python			Easy
925	Long Pressed Name	Python			Easy
926	Flip String to Monotone Increasing	Python			Medium
927	Three Equal Parts	Python			Hard
929	Unique Email Addresses	Python			Easy
930	Binary Subarrays With Sum	Python	Java	C++	Medium
931	Minimum Falling Path Sum	Python			Medium
933	Number of Recent Calls	Python			Easy
934	Shortest Bridge	Python			Hard
937	Reorder Data in Log Files	Python			Easy
940	Distinct Subsequences II	Python			Hard
941	Valid Mountain Array	Python			Easy
942	DI String Match	Python			Easy
944	Delete Columns to Make Sorted	Python			Easy
946	Validate Stack Sequences	Python			Easy
947	Most Stones Removed with Same Row or Column	Python			Medium
952	Largest Component Size by Common Factor	Python			Hard
953	Verifying an Alien Dictionary	Python			Easy
954	Array of Doubled Pairs	Python			Medium
959	Regions Cut By Slashes	Python			Medium
961	N-Repeated Element in Size 2N Array	Python			Easy
962	Maximum Width Ramp	Python			Medium
963	Minimum Area Rectangle II	Python			Medium
964	Least Operators to Express Number	Python			Hard
965	Univalued Binary Tree	Python			Easy
966	Vowel Spellchecker	Python			Medium
967	Numbers With Same Consecutive Differences	Python			Medium
968	Binary Tree Cameras	Python			Hard
969	Pancake Sorting	Python			Medium
970	Powerful Integers	Python			Easy
971	Flip Binary Tree To Match Preorder Traversal	Python			Medium
972	Equal Rational Numbers	Python			Hard
973	K Closest Points to Origin	Python			Easy
974	Subarray Sums Divisible by K	Python			Medium
975	Odd Even Jump	Python			Hard
976	Largest Perimeter Triangle	Python			Easy
977	Squares of a Sorted Array	Python			Easy
978	Longest Turbulent Subarray	Python			Medium
979	Distribute Coins in Binary Tree	Python			Medium
980	Unique Paths III	Python			Hard
981	Time Based Key-Value Store	Python	Java	C++	Medium
982	Triples with Bitwise AND Equal To Zero	Python			Hard
983	Minimum Cost For Tickets	Python			Medium
984	String Without AAA or BBB	Python			Easy
985	Sum of Even Numbers After Queries	Python			Easy
986	Interval List Intersections	Python			Medium
987	Vertical Order Traversal of a Binary Tree	Python			Medium
988	Smallest String Starting From Leaf	Python			Medium
989	Add to Array-Form of Integer	Python			Easy
994	Rotting Oranges	Python			Medium
995	Minimum Number of K Consecutive Bit Flips	Python			Hard
992	Subarrays with K Different Integers	Python			Hard
997	Find the Town Judge	Python			Easy
998	Maximum Binary Tree II	Python			Medium
999	Available Captures for Rook	Python			Easy
1000	Minimum Cost to Merge Stones	Python			Hard
1001	Grid Illumination	Python			Hard
1002	Find Common Characters	Python			Easy
1003	Check If Word Is Valid After Substitutions	Python			Medium
1004	Max Consecutive Ones III	Python			Medium
1005	Maximize Sum Of Array After K Negations	Python			Easy
1008	Construct Binary Search Tree from Preorder Traversal	Python			Medium
1009	Complement of Base 10 Integer	Python			Easy
1010	Pairs of Songs With Total Durations Divisible by 60	Python			Medium
1012	Numbers With Repeated Digits	Python			Hard
1014	Best Sightseeing Pair	Python			Medium
1015	Smallest Integer Divisible by K	Python			Medium
1016	Binary String With Substrings Representing 1 To N	Python			Medium
1017	Convert to Base -2	Python			Medium
1018	Binary Prefix Divisible By 5	Python			Easy
1019	Next Greater Node In Linked List	Python			Medium
1020	Number of Enclaves	Python			Medium
1021	Remove Outermost Parentheses	Python			Easy
1022	Sum of Root To Leaf Binary Numbers	Python			Easy
1023	Camelcase Matching	Python			Medium
1024	Video Stitching	Python			Medium
1026	Maximum Difference Between Node and Ancestor	Python			Medium
1027	Longest Arithmetic Subsequence	Python			Medium
1030	Matrix Cells in Distance Order	Python			Easy
1031	Maximum Sum of Two Non-Overlapping Subarrays	Python			Medium
1032	Stream of Characters	Python			Hard
1033	Moving Stones Until Consecutive	Python			Medium
1034	Coloring A Border	Python			Medium
1035	Uncrossed Lines	Python			Medium
1036	Escape a Large Maze	Python			Hard
1037	Valid Boomerang	Python			Easy
1039	Minimum Score Triangulation of Polygon	Python			Medium
1040	Moving Stones Until Consecutive II	Python			Medium
1041	Robot Bounded In Circle	Python			Medium
1042	Flower Planting With No Adjacent	Python			Medium
1043	Partition Array for Maximum Sum	Python			Medium
1044	Longest Duplicate Substring	Python			Hard
1046	Last Stone Weight	Python			Easy
1048	Longest String Chain	Python			Medium
1051	Height Checker	Python			Easy
1052	Grumpy Bookstore Owner	Python			Medium
1053	Previous Permutation With One Swap	Python			Medium
1054	Distant Barcodes	Python			Medium
1072	Flip Columns For Maximum Number of Equal Rows	Python			Medium
1073	Adding Two Negabinary Numbers	Python			Medium
1078	Occurrences After Bigram	Python			Easy
1079	Letter Tile Possibilities	Python			Medium
1080	Insufficient Nodes in Root to Leaf Paths	Python			Medium
1089	Duplicate Zeros	Python			Easy
1090	Largest Values From Labels	Python			Medium
1091	Shortest Path in Binary Matrix	Python			Medium
1093	Statistics from a Large Sample	Python			Medium
1096	Brace Expansion II	Python			Hard
1105	Filling Bookcase Shelves	Python			Medium
1106	Parsing A Boolean Expression	Python			Hard
1108	Defanging an IP Address	Python			Easy
1109	Corporate Flight Bookings	Python			Medium
1110	Delete Nodes And Return Forest	Python			Medium
1122	Relative Sort Array	Python			Easy
1123	Lowest Common Ancestor of Deepest Leaves	Python			Medium
1124	Longest Well-Performing Interval	Python			Medium
1125	Smallest Sufficient Team	Python			Hard
1128	Number of Equivalent Domino Pairs	Python			Easy
1129	Shortest Path with Alternating Colors	Python			Medium
1130	Minimum Cost Tree From Leaf Values	Python			Medium
1137	N-th Tribonacci Number	Python			Easy
1138	Alphabet Board Path	Python			Medium
1139	Largest 1-Bordered Square	Python			Medium
1140	Stone Game II	Python			Medium
1143	Longest Common Subsequence	Python			Medium
1144	Decrease Elements To Make Array Zigzag	Python			Medium
1145	Binary Tree Coloring Game	Python			Medium
1147	Longest Chunked Palindrome Decomposition	Python			Medium
1154	Day of the Year	Python			Easy
1155	Number of Dice Rolls With Target Sum	Python			Medium
1156	Swap For Longest Repeated Character Substring	Python			Medium
1157	Online Majority Element In Subarray	Python			Hard
1161	Maximum Level Sum of a Binary Tree	Python			Medium
1163	Last Substring in Lexicographical Order	Python			Hard
1170	Compare Strings by Frequency of the Smallest Character	Python			Medium
1171	Remove Zero Sum Consecutive Nodes from Linked List	Python			Medium
1172	Dinner Plate Stacks	Python			Hard
1175	Prime Arrangements	Python			Easy
1177	Can Make Palindrome from Substring	Python			Medium
1178	Number of Valid Words for Each Puzzle	Python			Hard
1184	Distance Between Bus Stops	Python			Easy
1185	Day of the Week	Python			Easy
1186	Maximum Subarray Sum with One Deletion	Python			Medium
1187	Make Array Strictly Increasing	Python			Hard
1189	Maximum Number of Balloons	Python			Easy
1190	Reverse Substrings Between Each Pair of Parentheses	Python			Medium
1191	K-Concatenation Maximum Sum	Python			Medium
1192	Shortest Common Supersequence	Python			Hard
1200	Minimum Absolute Difference	Python			Easy
1202	Smallest String With Swaps	Python			Medium
1203	Sort Items by Groups Respecting Dependencies	Python			Hard
1206	Design Skiplist	Python			Hard
1207	Unique Number of Occurrences	Python			Easy
1208	Get Equal Substrings Within Budget	Python			Medium
1210	Minimum Moves to Reach Target with Rotations	Python			Hard
1217	Minimum Cost to Move Chips to The Same Position	Python			Easy
1218	Longest Arithmetic Subsequence of Given Difference	Python			Medium
1219	Path with Maximum Gold	Python			Medium
1220	Count Vowels Permutation	Python			Hard
1221	Split a String in Balanced Strings	Python			Easy
1222	Queens That Can Attack the King	Python			Medium
1223	Dice Roll Simulation	Python			Hard
1224	Maximum Equal Frequency	Python			Hard
1232	Check If It Is a Straight Line	Python			Easy
1233	Remove Sub-Folders from the Filesystem	Python			Medium
1234	Replace the Substring for Balanced String	Python			Medium
1235	Maximum Profit in Job Scheduling	Python			Hard
1237	Find Positive Integer Solution for a Given Equation	Python			Medium
1238	Circular Permutation in Binary Representation	Python			Medium
1239	Maximum Length of a Concatenated String with Unique Characters	Python	Java	C++	Medium
1240	Tiling a Rectangle with the Fewest Squares	Python			Hard
1247	Minimum Swaps to Make Strings Equal	Python			Medium
1250	Check If It Is a Good Array	Python			Hard
1252	Cells with Odd Values in a Matrix	Python			Easy
1253	Reconstruct a 2-Row Binary Matrix	Python			Medium
1254	Number of Closed Islands	Python			Medium
1255	Maximum Score Words Formed by Letters	Python			Hard
1260	Shift 2D Grid	Python			Easy
1262	Greatest Sum Divisible by Three	Python			Medium
1263	Minimum Moves to Move a Box to Their Target Location	Python			Hard
1267	Count Servers that Communicate	Python			Medium
1277	Count Square Submatrices with All Ones	Python			Medium
1281	Subtract the Product and Sum of Digits of an Integer	Python			Easy
1282	Group the People Given the Group Size They Belong To	Python			Medium
1289	Minimum Falling Path Sum II	Python			Hard
1290	Convert Binary Number in a Linked List to Integer	Python			Easy
1302	Deepest Leaves Sum	Python			Medium
1305	All Elements in Two Binary Search Trees	Python			Medium
1309	Decrypt String from Alphabet to Integer Mapping	Python			Easy
1314	Matrix Block Sum	Python			Medium
1319	Number of Operations to Make Network Connected	Python			Medium
1326	Minimum Number of Taps to Open to Water a Garden	Python			Easy
1330	Reverse Subarray To Maximize Array Value	Python			Medium
1331	Rank Transform of an Array	Python			Easy
1332	Remove Palindromic Subsequences	Python			Easy
1333	Filter Restaurants by Vegan-Friendly, Price and Distance	Python			Medium
1334	Find the City With the Smallest Number of Neighbors at a Threshold Distance	Python			Medium
1335	Minimum Difficulty of a Job Schedule	Python			Hard
1337	The K Weakest Rows in a Matrix	Python			Easy
1342	Number of Steps to Reduce a Number to Zero	Python			Easy
1343	Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold	Python			Medium
1344	Angle Between Hands of a Clock	Python			Medium
1345	Jump Game IV	Python			Hard
1356	Sort Integers by The Number of 1 Bits	Python			Easy
1365	How Many Numbers Are Smaller Than the Current Number	Python			Easy
1367	Linked List in Binary Tree	Python			Medium
1370	Increasing Decreasing String	Python			Easy
1373	Maximum Sum BST in Binary Tree	Python			Hard
1374	Generate a String With Characters That Have Odd Counts	Python			Easy
1375	Number of Times Binary String Is Prefix-Aligned	Python			Medium
1376	Time Needed to Inform All Employees	Python			Medium
1377	Frog Position After T Seconds	Python			Hard
1380	Lucky Numbers in a Matrix	Python			Easy
1388	Pizza With 3n Slices	Python			Hard
1401	Circle and Rectangle Overlapping	Python			Medium
1402	Reducing Dishes	Python			Hard
1403	Minimum Subsequence in Non-Increasing Order	Python			Easy
1404	Number of Steps to Reduce a Number in Binary Representation to One	Python			Medium
1405	Longest Happy String	Python			Medium
1408	String Matching in an Array	Python			Easy
1410	HTML Entity Parser	Python			Medium
1413	Minimum Value to Get Positive Step by Step Sum	Python			Easy
1414	Find the Minimum Number of Fibonacci Numbers Whose Sum Is K	Python			Medium
1415	The k-th Lexicographical String of All Happy Strings of Length n	Python			Medium
1417	Reformat The String	Python			Easy
1418	Display Table of Food Orders in a Restaurant	Python	Java	C++	Medium
1419	Minimum Number of Frogs Croaking	Python			Medium
1422	Maximum Score After Splitting a String	Python			Easy
1423	Maximum Points You Can Obtain from Cards	Python			Medium
1436	Destination City	Python			Easy
1438	Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit	Python			Medium
1439	Find the Kth Smallest Sum of a Matrix With Sorted Rows	Python			Hard
1441	Build an Array With Stack Operations	Python			Easy
1444	Number of Ways of Cutting a Pizza	Python			Hard
1446	Consecutive Characters	Python			Easy
1447	Simplified Fractions	Python			Medium
1448	Count Good Nodes in Binary Tree	Python			Medium
1450	Number of Students Doing Homework at a Given Time	Python			Easy
1455	Check If a Word Occurs As a Prefix of Any Word in a Sentence	Python			Easy
1457	Pseudo-Palindromic Paths in a Binary Tree	Python			Medium
1460	Make Two Arrays Equal by Reversing Sub-arrays	Python			Easy
1462	Course Schedule IV	Python			Medium
1464	Maximum Product of Two Elements in an Array	Python			Easy
1465	Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts	Python			Medium
1470	Shuffle the Array	Python			Easy
1475	Final Prices With a Special Discount in a Shop	Python			Easy
1480	Running Sum of 1d Array	Python			Easy
1483	Kth Ancestor of a Tree Node	Python			Hard
1487	Making File Names Unique	Python			Medium
1488	Avoid Flood in The City	Python			Medium
1489	Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree	Python			Hard
1491	Average Salary Excluding the Minimum and Maximum Salary	Python			Easy
1494	Parallel Courses II	Python			Hard
1499	Max Value of Equation	Python			Hard
1502	Can Make Arithmetic Progression From Sequence	Python			Easy
1518	Water Bottles	Python			Easy
1523	Count Odd Numbers in an Interval Range	Python			Easy
1534	Count Good Triplets	Python			Easy
1535	Find the Winner of an Array Game	Python			Medium
1536	Minimum Swaps to Arrange a Binary Grid	Python			Medium
1537	Get the Maximum Score	Python			Hard
1567	Maximum Length of Subarray With Positive Product	Python			Medium
1572	Matrix Diagonal Sum	Python			Easy
1574	Shortest Subarray to be Removed to Make Array Sorted	Python			Medium
1576	Replace All ?'s to Avoid Consecutive Repeating Characters	Python			Easy
1579	Remove Max Number of Edges to Keep Graph Fully Traversable	Python			Hard
1582	Special Positions in a Binary Matrix	Python			Easy
1583	Count Unhappy Friends	Python			Medium
1584	Min Cost to Connect All Points	Python			Medium
1585	Check If String Is Transformable With Substring Sort Operations	Python			Hard
1588	Sum of All Odd Length Subarrays	Python			Easy
1590	Make Sum Divisible by P	Python			Medium
1592	Rearrange Spaces Between Words	Python			Easy
1593	Split a String Into the Max Number of Unique Substrings	Python			Medium
1594	Maximum Non Negative Product in a Matrix	Python			Medium
1595	Minimum Cost to Connect Two Groups of Points	Python			Hard
1598	Crawler Log Folder	Python			Easy
1599	Maximum Profit of Operating a Centennial Wheel	Python			Medium
1600	Throne Inheritance	Python	Java	C++	Medium
1601	Maximum Number of Achievable Transfer Requests	Python			Hard
1603	Design Parking System	Python			Easy
1604	Alert Using Same Key-Card Three or More Times in a One Hour Period	Python			Medium
1605	Find Valid Matrix Given Row and Column Sums	Python			Medium
1606	Find Servers That Handled Most Number of Requests	Python			Hard
1608	Special Array With X Elements Greater Than or Equal X	Python			Easy
1609	Even Odd Tree	Python			Medium
1610	Maximum Number of Visible Points	Python			Hard
1614	Maximum Nesting Depth of the Parentheses	Python			Easy
1615	Maximal Network Rank	Python			Medium
1616	Split Two Strings to Make Palindrome	Python			Medium
1617	Count Subtrees With Max Distance Between Cities	Python			Hard
1619	Mean of Array After Removing Some Elements	Python			Easy
1620	Coordinate With Maximum Network Quality	Python			Medium
1624	Largest Substring Between Two Equal Characters	Python			Easy
1625	Lexicographically Smallest String After Applying Operations	Python			Medium
1626	Best Team With No Conflicts	Python			Medium
1629	Slowest Key	Python			Easy
1630	Arithmetic Subarrays	Python			Medium
1631	Path With Minimum Effort	Python			Medium
1632	Rank Transform of a Matrix	Python			Hard
1636	Sort Array by Increasing Frequency	Python			Easy
1637	Widest Vertical Area Between Two Points Containing No Points	Python			Medium
1638	Count Substrings That Differ by One Character	Python			Medium
1640	Check Array Formation Through Concatenation	Python			Easy
1641	Count Sorted Vowel Strings	Python			Medium
1646	Get Maximum in Generated Array	Python			Easy
1652	Defuse the Bomb	Python			Easy
1653	Minimum Deletions to Make String Balanced	Python			Medium
1654	Minimum Jumps to Reach Home	Python			Medium
1656	Design an Ordered Stream	Python			Easy
1657	Determine if Two Strings Are Close	Python			Medium
1658	Minimum Operations to Reduce X to Zero	Python			Medium
1659	Maximize Grid Happiness	Python			Hard
1662	Check If Two String Arrays are Equivalent	Python			Easy
1663	Smallest String With A Given Numeric Value	Python			Medium
1664	Ways to Make a Fair Array	Python			Medium
1668	Maximum Repeating Substring	Python			Easy
1669	Merge In Between Linked Lists	Python			Medium
1670	Design Front Middle Back Queue	Python			Medium
1672	Richest Customer Wealth	Python			Easy
1678	Goal Parser Interpretation	Python			Easy
1681	Minimum Incompatibility	Python			Hard
1684	Count the Number of Consistent Strings	Python			Easy
1687	Delivering Boxes from Storage to Ports	Python			Hard
1688	Count of Matches in Tournament	Python			Easy
1689	Partitioning Into Minimum Number Of Deci-Binary Numbers	Python			Medium
1690	Stone Game VII	Python			Medium
1691	Maximum Height by Stacking Cuboids	Python			Hard
1694	Reformat Phone Number	Python			Easy
1697	Checking Existence of Edge Length Limited Paths	Python			Hard
1700	Number of Students Unable to Eat Lunch	Python			Easy
1703	Minimum Adjacent Swaps for K Consecutive Ones	Python			Hard
1704	Determine if String Halves Are Alike	Python			Easy
1705	Maximum Number of Eaten Apples	Python			Medium
1706	Where Will the Ball Fall	Python			Medium
1710	Maximum Units on a Truck	Python			Easy
1711	Count Good Meals	Python	Java	C++	Medium
1716	Calculate Money in Leetcode Bank	Python			Easy
1717	Maximum Score From Removing Substrings	Python			Medium
1718	Construct the Lexicographically Largest Valid Sequence	Python			Medium
1719	Number Of Ways To Reconstruct A Tree	Python			Hard
1725	Number Of Rectangles That Can Form The Largest Square	Python			Easy
1726	Tuple with Same Product	Python			Medium
1727	Largest Submatrix With Rearrangements	Python			Medium
1728	Cat and Mouse II	Python			Hard
1732	Find the Highest Altitude	Python			Easy
1739	Building Boxes	Python			Hard
1742	Maximum Number of Balls in a Box	Python			Easy
1748	Sum of Unique Elements	Python			Easy
1749	Maximum Absolute Sum of Any Subarray	Python			Medium
1750	Minimum Length of String After Deleting Similar Ends	Python			Medium
1752	Check if Array Is Sorted and Rotated	Python			Easy
1753	Maximum Score From Removing Stones	Python			Medium
1754	Largest Merge Of Two Strings	Python			Medium
1758	Minimum Changes To Make Alternating Binary String	Python			Easy
1759	Count Number of Homogenous Substrings	Python			Medium
1760	Minimum Limit of Balls in a Bag	Python			Medium
1761	Minimum Degree of a Connected Trio in a Graph	Python			Hard
1763	Longest Nice Substring	Python			Easy
1764	Form Array by Concatenating Subarrays of Another Array	Python			Medium
1765	Map of Highest Peak	Python			Medium
1768	Merge Strings Alternately	Python			Easy
1769	Minimum Number of Operations to Move All Balls to Each Box	Python			Medium
1773	Count Items Matching a Rule	Python			Easy
1774	Closest Dessert Cost	Python			Medium
1775	Equal Sum Arrays With Minimum Number of Operations	Python			Medium
1779	Find Nearest Point That Has the Same X or Y Coordinate	Python			Easy
1780	Check if Number is a Sum of Powers of Three	Python			Medium
1781	Sum of Beauty of All Substrings	Python			Medium
1782	Count Pairs Of Nodes	Python			Hard
1784	Check if Binary String Has at Most One Segment of Ones	Python			Easy
1785	Minimum Elements to Add to Form a Given Sum	Python			Medium
1790	Check if One String Swap Can Make Strings Equal	Python			Easy
1791	Find Center of Star Graph	Python			Easy
1792	Maximum Average Pass Ratio	Python			Medium
1796	Second Largest Digit in a String	Python			Easy
1797	Design Authentication Manager	Python			Medium
1798	Maximum Number of Consecutive Values You Can Make	Python			Medium
1799	Maximize Score After N Operations	Python			Hard
1800	Maximum Ascending Subarray Sum	Python			Easy
1801	Number of Orders in the Backlog	Python			Medium
1802	Maximum Value at a Given Index in a Bounded Array	Python			Medium
1803	Count Pairs With XOR in a Range	Python			Hard
1805	Number of Different Integers in a String	Python			Easy
1806	Minimum Number of Operations to Reinitialize a Permutation	Python			Medium
1807	Evaluate the Bracket Pairs of a String	Python			Medium
1812	Determine Color of a Chessboard Square	Python			Easy
1813	Sentence Similarity III	Python			Medium
1814	Count Nice Pairs in an Array	Python			Medium
1815	Maximum Number of Groups Getting Fresh Donuts	Python			Hard
1816	Truncate Sentence	Python			Easy
1817	Finding the Users Active Minutes	Python			Medium
1818	Minimum Absolute Sum Difference	Python			Medium
1819	Number of Different Subsequences GCDs	Python			Hard
1822	Sign of the Product of an Array	Python			Easy
1823	Find the Winner of the Circular Game	Python			Medium
1824	Minimum Sideway Jumps	Python			Medium
1825	Finding MK Average	Python			Hard
1827	Minimum Operations to Make the Array Increasing	Python			Easy
1828	Queries on Number of Points Inside a Circle	Python			Medium
1832	Check if the Sentence Is Pangram	Python			Easy
1833	Maximum Ice Cream Bars	Python	Java	C++	Medium
1845	Seat Reservation Manager	Python			Medium
1846	Maximum Element After Decreasing and Rearranging	Python			Medium
1851	Minimum Interval to Include Each Query	Python			Hard
1886	Determine Whether Matrix Can Be Obtained By Rotation	Python			Easy
1894	Find the Student that Will Replace the Chalk	Python			Medium
1911	Maximum Alternating Subsequence Sum	Python			Medium
1921	Eliminate Maximum Number of Monsters	Python			Medium
1945	Sum of Digits of String After Convert	Python			Easy
1971	Find if Path Exists in Graph	Python			Easy
1984	Minimum Difference Between Highest and Lowest of K Scores	Python			Easy
1985	Find the Kth Largest Integer in the Array	Python			Medium
1986	Minimum Number of Work Sessions to Finish the Tasks	Python			Medium
1993	Operations on Tree	Python			Medium
1994	The Number of Good Subsets	Python			Hard
1995	Count Special Quadruplets	Python			Easy
1996	The Number of Weak Characters in the Game	Python			Medium
1997	First Day Where You Have Been in All the Rooms	Python			Medium
2000	Reverse Prefix of Word	Python			Easy
2001	Number of Pairs of Interchangeable Rectangles	Python			Medium
2002	Maximum Product of the Length of Two Palindromic Subsequences	Python			Medium
2003	Smallest Missing Genetic Value in Each Subtree	Python			Hard
2006	Count Number of Pairs With Absolute Difference K	Python			Easy
2007	Find Original Array From Doubled Array	Python			Medium
2008	Maximum Earnings From Taxi	Python			Medium
2011	Final Value of Variable After Performing Operations	Python			Easy
2012	Sum of Beauty in the Array	Python			Medium
2013	Detect Squares	Python			Medium
2016	Maximum Difference Between Increasing Elements	Python			Easy
2022	Convert 1D Array Into 2D Array	Python			Easy
2024	Maximize the Confusion of an Exam	Python			Medium
2027	Minimum Moves to Convert String	Python			Easy
2028	Find Missing Observations	Python			Medium
2029	Stone Game IX	Python			Medium
2032	Two Out of Three	Python			Easy
2033	Minimum Operations to Make a Uni-Value Grid	Python			Medium
2034	Stock Price Fluctuation	Python			Medium
2037	Minimum Number of Moves to Seat Everyone	Python			Easy
2038	Remove Colored Pieces if Both Neighbors are the Same Color	Python			Medium
2039	The Time When the Network Becomes Idle	Python			Medium
2042	Check if Numbers Are Ascending in a Sentence	Python			Easy
2043	Simple Bank System	Python			Medium
2044	Count Number of Maximum Bitwise-OR Subsets	Python			Medium
2045	Second Minimum Time to Reach Destination	Python			Hard
2047	Number of Valid Words in a Sentence	Python			Easy
2048	Next Greater Numerically Balanced Number	Python			Medium
2049	Count Nodes With the Highest Score	Python			Medium
2050	Parallel Courses III	Python			Hard
2055	Plates Between Candles	Python			Medium
2094	Finding 3-Digit Even Numbers	Python			Easy
2095	Delete the Middle Node of a Linked List	Python			Medium
2096	Step-By-Step Directions From a Binary Tree Node to Another	Python			Medium
2099	Find Subsequence of Length K With the Largest Sum	Python			Easy
2100	Find Good Days to Rob the Bank	Python			Medium
2101	Detonate the Maximum Bombs	Python			Medium
2102	Sequentially Ordinal Rank Tracker	Python			Hard
2103	Rings and Rods	Python			Easy
2104	Sum of Subarray Ranges	Python			Medium
2105	Watering Plants II	Python			Medium
2106	Maximum Fruits Harvested After at Most K Steps	Python			Hard
2108	Find First Palindromic String in the Array	Python			Easy
2109	Adding Spaces to a String	Python			Medium
2110	Number of Smooth Descent Periods of a Stock	Python			Medium
2111	Minimum Operations to Make the Array K-Increasing	Python			Hard
2127	Maximum Employees to Be Invited to a Meeting	Python			Hard
2136	Earliest Possible Day of Full Bloom	Python			Hard
2178	Maximum Split of Positive Even Integers	Python			Medium
2180	Count Integers With Even Digit Sum	Python			Easy
2185	Counting Words With a Given Prefix	Python			Easy
2208	Minimum Operations to Halve Array Sum	Python			Medium
2216	Minimum Deletions to Make Array Beautiful	Python			Easy
2235	Add Two Integers	Python			Easy
2236	Root Equals Sum of Children	Python			Easy
2240	Number of Ways to Buy Pens and Pencils	Python			Medium
2251	Number of Flowers in Full Bloom	Python			Hard
2258	Escape the Spreading Fire	Python			Hard
2283	Check if Number Has Equal Digit Count and Digit Value	Python			Easy
2287	Rearrange Characters to Make Target String	Python			Easy
2293	Min Max Game	Python			Easy
2299	Strong Password Checker II	Python			Easy
2300	Successful Pairs of Spells and Potions	Python			Medium
2303	Calculate Amount Paid in Taxes	Python			Easy
2304	Minimum Path Cost in a Grid	Python			Medium
2309	Greatest English Letter in Upper and Lower Case	Python			Easy
2315	Count Asterisks	Python			Easy
2316	Count Unreachable Pairs of Nodes in an Undirected Graph	Python			Medium
2319	Check if Matrix Is X-Matrix	Python			Easy
2325	Decode the Message	Python			Easy
2331	Evaluate Boolean Binary Tree	Python			Easy
2335	Minimum Amount of Time to Fill Cups	Python			Easy
2336	Smallest Number in Infinite Set	Python			Medium
2337	Move Pieces to Obtain a String	Python			Medium
2341	Maximum Number of Pairs in Array	Python			Easy
2342	Max Sum of a Pair With Equal Sum of Digits	Python			Medium
2347	Best Poker Hand	Python			Easy
2351	First Letter to Appear Twice	Python			Easy
2352	Equal Row and Column Pairs	Python			Medium
2357	Make Array Zero by Subtracting Equal Amounts	Python			Easy
2363	Merge Similar Items	Python			Easy
2367	Number of Arithmetic Triplets	Python			Easy
2373	Largest Local Values in a Matrix	Python			Easy
2379	Minimum Recolors to Get K Consecutive Black Blocks	Python			Easy
2383	Minimum Hours of Training to Win a Competition	Python			Easy
2389	Longest Subsequence With Limited Sum	Python			Easy
2395	Find Subarrays With Equal Sum	Python			Easy
2399	Check Distances Between Same Letters	Python			Easy
2404	Most Frequent Even Element	Python			Easy
2409	Count Days Spent Together	Python			Easy
2413	Smallest Even Multiple	Python			Easy
2418	Sort the People	Python			Easy
2423	Remove Letter To Equalize Frequency	Python			Easy
2427	Number of Common Factors	Python			Easy
2432	The Employee That Worked on the Longest Task	Python			Easy
2437	Convert the Temperature	Python			Easy
2441	Largest Positive Integer That Exists With Its Negative	Python			Easy
2446	Determine if Two Events Have Conflict	Python			Easy
2451	Odd String Difference	Python			Easy
2455	Average Value of Even Numbers That Are Divisible by Three	Python			Easy
2460	Apply Operations to an Array	Python			Easy
2465	Number of Distinct Averages	Python			Easy
2469	Number of Valid Clock Times	Python			Easy
2475	Number of Unequal Triplets in Array	Python			Easy
2481	Minimum Cuts to Divide a Circle	Python			Easy
2485	Find the Pivot Integer	Python			Easy
2488	Count Subarrays With Median K	Python			Hard
2490	Circular Sentence	Python			Medium
2496	Maximum Value of a String in an Array	Python			Easy
2500	Delete Greatest Value in Each Row	Python			Easy
2511	Maximum Enemy Forts That Can Be Captured	Python			Easy
2512	Reward Top K Students	Python			Medium
2517	Maximum Tastiness of Candy Basket	Python			Medium
2520	Count the Digits That Divide a Number	Python			Easy
2525	Categorize Box According to Criteria	Python			Easy
2530	Maximal Score After Applying K Operations	Python			Medium
2532	Time to Cross a Bridge	Python			Hard
2544	Alternating Digit Sum	Python			Easy
2558	Take Gifts From the Richest Pile	Python			Easy
2559	Handling Sum Queries After Update	Python			Medium
2560	House Robber IV	Python			Medium
2562	Find the Array Concatenation Value	Python			Medium
2569	Count Vowel Strings in Ranges	Python			Hard
2578	Split With Minimum Sum	Python			Easy
2582	Pass the Pillow	Python			Easy
2586	Count the Number of Vowel Strings in Range	Python			Easy
2591	Distribute Money to Maximum Children	Python			Easy
2594	Minimum Time to Repair Cars	Python			Medium
2596	Check Knight Tour Configuration	Python			Medium
2600	K Items With the Maximum Sum	Python			Easy
2603	Collect Coins in a Tree	Python		Hard
2605	Form Smallest Number From Two Digit Arrays	Python			Easy
2609	Find the Longest Balanced Substring of a Binary String	Python			Easy
2611	Mice and Cheese	Python			Medium
2651	Calculate Delayed Arrival Time	Python			Easy
2652	Sum Multiples	Python			Easy
2656	Maximum Sum With Exactly K Elements	Python			Easy
2678	Number of Senior Citizens	Python			Easy
2679	Sum in a Matrix	Python			Medium
2681	Power of Heroes	Python			Hard
2682	Find the Losers of the Circular Game	Python			Easy
2698	Find the Punishment Number of an Integer	Python			Medium
2699	Modify Graph Edge Weights	Python			Hard
2731	Movement of Robots	Python			Medium
2736	Maximum Sum Queries	Python			Hard
2760	Longest Even Odd Subarray With Threshold	Python			Easy
2824	Count Pairs Whose Sum is Less than Target	Python			Easy
3099	Harshad Number	Python			Easy
3100	Water Bottles II	Python			Medium
3101	Count Alternating Subarrays	Python			Medium
3102	Minimize Manhattan Distances	Python			Hard