RUST GYM Leetcode Rust Solutions

id	title	from

id	Leetcode 1322 Rust Solutions	Level
1	Two Sum	Easy
2	Add Two Numbers	Medium
3	Longest Substring Without Repeating Characters	Medium
4	Median of Two Sorted Arrays	Hard
5	Longest Palindromic Substring	Medium
6	ZigZag Conversion	Medium
7	Reverse Integer	Easy
8	String to Integer (atoi)	Medium
9	Palindrome Number	Easy
10	Regular Expression Matching	Hard
11	Container With Most Water	Medium
12	Integer to Roman	Medium
13	Roman to Integer	Easy
14	Longest Common Prefix	Easy
15	3Sum	Medium
16	3Sum Closest	Medium
17	Letter Combinations of a Phone Number	Medium
18	4Sum	Medium
19	Remove Nth Node From End of List	Medium
20	Valid Parentheses	Easy
21	Merge Two Sorted Lists	Easy
22	Generate Parentheses	Medium
23	Merge k Sorted Lists	Hard
24	Swap Nodes in Pairs	Medium
25	Reverse Nodes in k-Group	Hard
26	Remove Duplicates from Sorted Array	Easy
27	Remove Element	Easy
28	Implement strStr()	Easy
29	Divide Two Integers	Medium
30	Substring with Concatenation of All Words	Hard
31	Next Permutation	Medium
32	Longest Valid Parentheses	Hard
33	Search in Rotated Sorted Array	Medium
34	Find First and Last Position of Element in Sorted Array	Medium
35	Search Insert Position	Easy
36	Valid Sudoku	Medium
37	Sudoku Solver	Hard
38	Count and Say	Medium
39	Combination Sum	Medium
40	Combination Sum II	Medium
41	First Missing Positive	Hard
42	Trapping Rain Water	Hard
43	Multiply Strings	Medium
44	Wildcard Matching	Hard
45	Jump Game II	Medium
46	Permutations	Medium
47	Permutations II	Medium
48	Rotate Image	Medium
49	Group Anagrams	Medium
50	Pow(x, n)	Medium
51	N-Queens	Hard
52	N-Queens II	Hard
53	Maximum Subarray	Easy
54	Spiral Matrix	Medium
55	Jump Game	Medium
56	Merge Intervals	Medium
57	Insert Interval	Medium
58	Length of Last Word	Easy
59	Spiral Matrix II	Medium
60	Permutation Sequence	Hard
61	Rotate List	Medium
62	Unique Paths	Medium
63	Unique Paths II	Medium
64	Minimum Path Sum	Medium
65	Valid Number	Hard
66	Plus One	Easy
67	Add Binary	Easy
68	Text Justification	Hard
69	Sqrt(x)	Easy
70	Climbing Stairs	Easy
71	Simplify Path	Medium
72	Edit Distance	Hard
73	Set Matrix Zeroes	Medium
74	Search a 2D Matrix	Medium
75	Sort Colors	Medium
76	Minimum Window Substring	Hard
77	Combinations	Medium
78	Subsets	Medium
79	Word Search	Medium
80	Remove Duplicates from Sorted Array II	Medium
81	Search in Rotated Sorted Array II	Medium
82	Remove Duplicates from Sorted List II	Medium
83	Remove Duplicates from Sorted List	Easy
84	Largest Rectangle in Histogram	Hard
85	Maximal Rectangle	Hard
86	Partition List	Medium
87	Scramble String	Hard
88	Merge Sorted Array	Easy
89	Gray Code	Medium
90	Subsets II	Medium
91	Decode Ways	Medium
92	Reverse Linked List II	Medium
93	Restore IP Addresses	Medium
94	Binary Tree Inorder Traversal	Easy
95	Unique Binary Search Trees II	Medium
96	Unique Binary Search Trees	Medium
97	Interleaving String	Medium
98	Validate Binary Search Tree	Medium
99	Recover Binary Search Tree	Medium
100	Same Tree	Easy
101	Symmetric Tree	Easy
102	Binary Tree Level Order Traversal	Medium
103	Binary Tree Zigzag Level Order Traversal	Medium
104	Maximum Depth of Binary Tree	Easy
105	Construct Binary Tree from Preorder and Inorder Traversal	Medium
106	Construct Binary Tree from Inorder and Postorder Traversal	Medium
107	Binary Tree Level Order Traversal II	Medium
108	Convert Sorted Array to Binary Search Tree	Easy
109	Convert Sorted List to Binary Search Tree	Medium
110	Balanced Binary Tree	Easy
111	Minimum Depth of Binary Tree	Easy
112	Path Sum	Easy
113	Path Sum II	Medium
114	Flatten Binary Tree to Linked List	Medium
115	Distinct Subsequences	Hard
118	Pascal's Triangle	Easy
120	Triangle	Medium
121	Best Time to Buy and Sell Stock	Easy
122	Best Time to Buy and Sell Stock II	Easy
123	Best Time to Buy and Sell Stock III	Hard
124	Binary Tree Maximum Path Sum	Hard
125	Valid Palindrome	Easy
126	Word Ladder II	Hard
127	Word Ladder	Hard
128	Longest Consecutive Sequence	Medium
129	Sum Root to Leaf Numbers	Medium
130	Surrounded Regions	Medium
131	Palindrome Partitioning	Medium
132	Palindrome Partitioning II	Hard
134	Gas Station	Medium
135	Candy	Hard
136	Single Number	Easy
137	Single Number II	Medium
139	Word Break	Medium
140	Word Break II	Hard
143	Reorder List	Medium
144	Binary Tree Preorder Traversal	Easy
145	Binary Tree Postorder Traversal	Easy
146	LRU Cache	Medium
147	Insertion Sort List	Medium
148	Sort List	Medium
149	Max Points on a Line	Hard
150	Evaluate Reverse Polish Notation	Medium
151	Reverse Words in a String	Medium
152	Maximum Product Subarray	Medium
153	Find Minimum in Rotated Sorted Array	Medium
154	Find Minimum in Rotated Sorted Array II	Hard
155	Min Stack	Easy
156	Binary Tree Upside Down	Medium
157	Read N Characters Given Read4	Easy
159	Longest Substring with At Most Two Distinct Characters	Medium
161	One Edit Distance	Medium
162	Find Peak Element	Medium
163	Missing Ranges	Easy
164	Maximum Gap	Hard
165	Compare Version Numbers	Medium
166	Fraction to Recurring Decimal	Medium
167	Two Sum II - Input array is sorted	Easy
168	Excel Sheet Column Title	Easy
169	Majority Element	Easy
170	Two Sum III - Data structure design	Easy
171	Excel Sheet Column Number	Easy
172	Factorial Trailing Zeroes	Easy
173	Binary Search Tree Iterator	Medium
174	Dungeon Game	Hard
179	Largest Number	Medium
186	Reverse Words in a String II	Medium
187	Repeated DNA Sequences	Medium
188	Best Time to Buy and Sell Stock IV	Hard
189	Rotate Array	Medium
190	Reverse Bits	Easy
191	Number of 1 Bits	Easy
198	House Robber	Medium
199	Binary Tree Right Side View	Medium
200	Number of Islands	Medium
201	Bitwise AND of Numbers Range	Medium
202	Happy Number	Easy
203	Remove Linked List Elements	Easy
204	Count Primes	Easy
205	Isomorphic Strings	Easy
206	Reverse Linked List	Easy
207	Course Schedule	Medium
208	Implement Trie (Prefix Tree)	Medium
209	Minimum Size Subarray Sum	Medium
210	Course Schedule II	Medium
211	Design Add and Search Words Data Structure	Medium
212	Word Search II	Hard
213	House Robber II	Medium
214	Shortest Palindrome	Hard
215	Kth Largest Element in an Array	Medium
216	Combination Sum III	Medium
217	Contains Duplicate	Easy
218	The Skyline Problem	Hard
219	Contains Duplicate II	Easy
220	Contains Duplicate III	Medium
221	Maximal Square	Medium
222	Count Complete Tree Nodes	Medium
223	Rectangle Area	Medium
224	Basic Calculator	Hard
225	Implement Stack using Queues	Easy
226	Invert Binary Tree	Easy
227	Basic Calculator II	Medium
228	Summary Ranges	Easy
229	Majority Element II	Medium
230	Kth Smallest Element in a BST	Medium
231	Power of Two	Easy
232	Implement Queue using Stacks	Easy
233	Number of Digit One	Hard
234	Palindrome Linked List	Easy
235	Lowest Common Ancestor of a Binary Search Tree	Easy
236	Lowest Common Ancestor of a Binary Tree	Medium
238	Product of Array Except Self	Medium
239	Sliding Window Maximum	Hard
240	Search a 2D Matrix II	Medium
241	Different Ways to Add Parentheses	Medium
242	Valid Anagram	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	Medium
257	Binary Tree Paths	Easy
258	Add Digits	Easy
259	3Sum Smaller	Medium
260	Single Number III	Medium
261	Graph Valid Tree	Medium
263	Ugly Number	Easy
264	Ugly Number II	Medium
265	Paint House II	Hard
266	Palindrome Permutation	Easy
267	Palindrome Permutation II	Medium
268	Missing Number	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	Hard
274	H-Index	Medium
275	H-Index II	Medium
276	Paint Fence	Medium
277	Find the Celebrity	Medium
278	First Bad Version	Easy
279	Perfect Squares	Medium
280	Wiggle Sort	Medium
281	Zigzag Iterator	Medium
282	Expression Add Operators	Hard
283	Move Zeroes	Easy
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	Medium
290	Word Pattern	Easy
291	Word Pattern II	Medium
292	Nim Game	Easy
293	Flip Game	Easy
294	Flip Game II	Medium
295	Find Median from Data Stream	Hard
296	Best Meeting Point	Hard
297	Serialize and Deserialize Binary Tree	Hard
298	Binary Tree Longest Consecutive Sequence	Medium
299	Bulls and Cows	Medium
300	Longest Increasing Subsequence	Medium
301	Remove Invalid Parentheses	Hard
302	Smallest Rectangle Enclosing Black Pixels	Hard
303	Range Sum Query - Immutable	Easy
304	Range Sum Query 2D - Immutable	Medium
305	Number of Islands II	Hard
306	Additive Number	Medium
307	Range Sum Query - Mutable	Medium
309	Best Time to Buy and Sell Stock with Cooldown	Medium
310	Minimum Height Trees	Medium
311	Sparse Matrix Multiplication	Medium
312	Burst Balloons	Hard
313	Super Ugly Number	Medium
314	Binary Tree Vertical Order Traversal	Medium
315	Count of Smaller Numbers After Self	Hard
316	Remove Duplicate Letters	Medium
317	Shortest Distance from All Buildings	Hard
318	Maximum Product of Word Lengths	Medium
319	Bulb Switcher	Medium
320	Generalized Abbreviation	Medium
321	Create Maximum Number	Hard
322	Coin Change	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	Easy
328	Odd Even Linked List	Medium
329	Longest Increasing Path in a Matrix	Hard
330	Patching Array	Hard
331	Verify Preorder Serialization of a Binary Tree	Medium
332	Reconstruct Itinerary	Medium
333	Largest BST Subtree	Medium
334	Increasing Triplet Subsequence	Medium
336	Palindrome Pairs	Hard
337	House Robber III	Medium
338	Counting Bits	Easy
339	Nested List Weight Sum	Medium
340	Longest Substring with At Most K Distinct Characters	Medium
341	Flatten Nested List Iterator	Medium
342	Power of Four	Easy
343	Integer Break	Medium
344	Reverse String	Easy
345	Reverse Vowels of a String	Easy
346	Moving Average from Data Stream	Easy
347	Top K Frequent Elements	Medium
348	Design Tic-Tac-Toe	Medium
349	Intersection of Two Arrays	Easy
350	Intersection of Two Arrays II	Easy
351	Android Unlock Patterns	Medium
352	Data Stream as Disjoint Intervals	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	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	Easy
368	Largest Divisible Subset	Medium
369	Plus One Linked List	Medium
370	Range Addition	Medium
371	Sum of Two Integers	Medium
372	Super Pow	Medium
373	Find K Pairs with Smallest Sums	Medium
374	Guess Number Higher or Lower	Easy
375	Guess Number Higher or Lower II	Medium
376	Wiggle Subsequence	Medium
377	Combination Sum IV	Medium
378	Kth Smallest Element in a Sorted Matrix	Medium
379	Design Phone Directory	Medium
380	Insert Delete GetRandom O(1)	Medium
381	Insert Delete GetRandom O(1) - Duplicates allowed	Hard
382	Linked List Random Node	Medium
383	Ransom Note	Easy
384	Shuffle an Array	Medium
385	Mini Parser	Medium
386	Lexicographical Numbers	Medium
387	First Unique Character in a String	Easy
388	Longest Absolute File Path	Medium
389	Find the Difference	Easy
390	Elimination Game	Medium
391	Perfect Rectangle	Hard
392	Is Subsequence	Easy
393	UTF-8 Validation	Medium
394	Decode String	Medium
395	Longest Substring with At Least K Repeating Characters	Medium
396	Rotate Function	Medium
397	Integer Replacement	Medium
398	Random Pick Index	Medium
399	Evaluate Division	Medium
400	Nth Digit	Medium
401	Binary Watch	Easy
402	Remove K Digits	Medium
403	Frog Jump	Hard
404	Sum of Left Leaves	Easy
405	Convert a Number to Hexadecimal	Easy
406	Queue Reconstruction by Height	Medium
407	Trapping Rain Water II	Hard
408	Valid Word Abbreviation	Easy
409	Longest Palindrome	Easy
410	Split Array Largest Sum	Hard
411	Minimum Unique Word Abbreviation	Hard
412	Fizz Buzz	Easy
413	Arithmetic Slices	Medium
414	Third Maximum Number	Easy
415	Add Strings	Easy
416	Partition Equal Subset Sum	Medium
417	Pacific Atlantic Water Flow	Medium
418	Sentence Screen Fitting	Medium
419	Battleships in a Board	Medium
420	Strong Password Checker	Hard
421	Maximum XOR of Two Numbers in an Array	Medium
422	Valid Word Square	Easy
423	Reconstruct Original Digits from English	Medium
424	Longest Repeating Character Replacement	Medium
425	Word Squares	Hard
432	All O`one Data Structure	Hard
433	Minimum Genetic Mutation	Medium
434	Number of Segments in a String	Easy
435	Non-overlapping Intervals	Medium
436	Find Right Interval	Medium
437	Path Sum III	Medium
438	Find All Anagrams in a String	Medium
439	Ternary Expression Parser	Medium
440	K-th Smallest in Lexicographical Order	Hard
441	Arranging Coins	Easy
442	Find All Duplicates in an Array	Medium
443	String Compression	Medium
444	Sequence Reconstruction	Medium
445	Add Two Numbers II	Medium
446	Arithmetic Slices II - Subsequence	Hard
447	Number of Boomerangs	Medium
448	Find All Numbers Disappeared in an Array	Easy
449	Serialize and Deserialize BST	Medium
450	Delete Node in a BST	Medium
451	Sort Characters By Frequency	Medium
452	Minimum Number of Arrows to Burst Balloons	Medium
453	Minimum Moves to Equal Array Elements	Easy
454	4Sum II	Medium
455	Assign Cookies	Easy
456	132 Pattern	Medium
457	Circular Array Loop	Medium
458	Poor Pigs	Hard
459	Repeated Substring Pattern	Easy
460	LFU Cache	Hard
461	Hamming Distance	Easy
462	Minimum Moves to Equal Array Elements II	Medium
463	Island Perimeter	Easy
464	Can I Win	Medium
465	Optimal Account Balancing	Hard
467	Unique Substrings in Wraparound String	Medium
468	Validate IP Address	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	Medium
475	Heaters	Medium
476	Number Complement	Easy
477	Total Hamming Distance	Medium
478	Generate Random Point in a Circle	Medium
479	Largest Palindrome Product	Hard
480	Sliding Window Median	Hard
481	Magical String	Medium
482	License Key Formatting	Easy
484	Find Permutation	Medium
485	Max Consecutive Ones	Easy
486	Predict the Winner	Medium
487	Max Consecutive Ones II	Medium
488	Zuma Game	Hard
490	The Maze	Medium
491	Increasing Subsequences	Medium
492	Construct the Rectangle	Easy
493	Reverse Pairs	Hard
494	Target Sum	Medium
495	Teemo Attacking	Easy
496	Next Greater Element I	Easy
497	Random Point in Non-overlapping Rectangles	Medium
498	Diagonal Traverse	Medium
499	The Maze III	Hard
500	Keyboard Row	Easy
501	Find Mode in Binary Search Tree	Easy
502	IPO	Hard
503	Next Greater Element II	Medium
504	Base 7	Easy
505	The Maze II	Medium
506	Relative Ranks	Easy
507	Perfect Number	Easy
508	Most Frequent Subtree Sum	Medium
509	Fibonacci Number	Easy
513	Find Bottom Left Tree Value	Medium
514	Freedom Trail	Hard
515	Find Largest Value in Each Tree Row	Medium
516	Longest Palindromic Subsequence	Medium
517	Super Washing Machines	Hard
518	Coin Change 2	Medium
519	Random Flip Matrix	Medium
520	Detect Capital	Easy
521	Longest Uncommon Subsequence I	Easy
522	Longest Uncommon Subsequence II	Medium
523	Continuous Subarray Sum	Medium
524	Longest Word in Dictionary through Deleting	Medium
525	Contiguous Array	Medium
526	Beautiful Arrangement	Medium
527	Word Abbreviation	Hard
528	Random Pick with Weight	Medium
529	Minesweeper	Medium
530	Minimum Absolute Difference in BST	Easy
531	Lonely Pixel I	Medium
532	K-diff Pairs in an Array	Medium
533	Lonely Pixel II	Medium
535	Encode and Decode TinyURL	Medium
536	Construct Binary Tree from String	Medium
537	Complex Number Multiplication	Medium
538	Convert BST to Greater Tree	Medium
539	Minimum Time Difference	Medium
540	Single Element in a Sorted Array	Medium
541	Reverse String II	Easy
542	01 Matrix	Medium
543	Diameter of Binary Tree	Easy
544	Output Contest Matches	Medium
545	Boundary of Binary Tree	Medium
546	Remove Boxes	Hard
547	Number of Provinces	Medium
548	Split Array with Equal Sum	Hard
549	Binary Tree Longest Consecutive Sequence II	Medium
551	Student Attendance Record I	Easy
552	Student Attendance Record II	Hard
553	Optimal Division	Medium
554	Brick Wall	Medium
555	Split Concatenated Strings	Medium
556	Next Greater Element III	Medium
557	Reverse Words in a String III	Easy
560	Subarray Sum Equals K	Medium
561	Array Partition I	Easy
562	Longest Line of Consecutive One in Matrix	Medium
563	Binary Tree Tilt	Easy
564	Find the Closest Palindrome	Hard
565	Array Nesting	Medium
566	Reshape the Matrix	Easy
567	Permutation in String	Medium
568	Maximum Vacation Days	Hard
572	Subtree of Another Tree	Easy
573	Squirrel Simulation	Medium
575	Distribute Candies	Easy
576	Out of Boundary Paths	Medium
581	Shortest Unsorted Continuous Subarray	Medium
582	Kill Process	Medium
583	Delete Operation for Two Strings	Medium
588	Design In-Memory File System	Hard
591	Tag Validator	Hard
592	Fraction Addition and Subtraction	Medium
593	Valid Square	Medium
594	Longest Harmonious Subsequence	Easy
598	Range Addition II	Easy
599	Minimum Index Sum of Two Lists	Easy
604	Design Compressed String Iterator	Easy
605	Can Place Flowers	Easy
606	Construct String from Binary Tree	Easy
609	Find Duplicate File in System	Medium
611	Valid Triangle Number	Medium
616	Add Bold Tag in String	Medium
617	Merge Two Binary Trees	Easy
621	Task Scheduler	Medium
622	Design Circular Queue	Medium
623	Add One Row to Tree	Medium
624	Maximum Distance in Arrays	Medium
625	Minimum Factorization	Medium
628	Maximum Product of Three Numbers	Easy
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	Medium
634	Find the Derangement of An Array	Medium
635	Design Log Storage System	Medium
636	Exclusive Time of Functions	Medium
637	Average of Levels in Binary Tree	Easy
638	Shopping Offers	Medium
640	Solve the Equation	Medium
641	Design Circular Deque	Medium
642	Design Search Autocomplete System	Hard
643	Maximum Average Subarray I	Easy
645	Set Mismatch	Easy
646	Maximum Length of Pair Chain	Medium
647	Palindromic Substrings	Medium
648	Replace Words	Medium
649	Dota2 Senate	Medium
650	2 Keys Keyboard	Medium
651	4 Keys Keyboard	Medium
652	Find Duplicate Subtrees	Medium
653	Two Sum IV - Input is a BST	Easy
654	Maximum Binary Tree	Medium
655	Print Binary Tree	Medium
657	Robot Return to Origin	Easy
658	Find K Closest Elements	Medium
659	Split Array into Consecutive Subsequences	Medium
660	Remove 9	Hard
661	Image Smoother	Easy
662	Maximum Width of Binary Tree	Medium
663	Equal Tree Partition	Medium
665	Non-decreasing Array	Medium
666	Path Sum IV	Medium
667	Beautiful Arrangement II	Medium
668	Kth Smallest Number in Multiplication Table	Hard
669	Trim a Binary Search Tree	Medium
670	Maximum Swap	Medium
671	Second Minimum Node In a Binary Tree	Easy
672	Bulb Switcher II	Medium
673	Number of Longest Increasing Subsequence	Medium
674	Longest Continuous Increasing Subsequence	Easy
675	Cut Off Trees for Golf Event	Hard
676	Implement Magic Dictionary	Medium
677	Map Sum Pairs	Medium
678	Valid Parenthesis String	Medium
679	24 Game	Hard
680	Valid Palindrome II	Easy
681	Next Closest Time	Medium
682	Baseball Game	Easy
683	K Empty Slots	Hard
684	Redundant Connection	Medium
686	Repeated String Match	Medium
687	Longest Univalue Path	Medium
688	Knight Probability in Chessboard	Medium
689	Maximum Sum of 3 Non-Overlapping Subarrays	Hard
692	Top K Frequent Words	Medium
693	Binary Number with Alternating Bits	Easy
694	Number of Distinct Islands	Medium
695	Max Area of Island	Medium
696	Count Binary Substrings	Easy
697	Degree of an Array	Easy
698	Partition to K Equal Sum Subsets	Medium
700	Search in a Binary Search Tree	Easy
701	Insert into a Binary Search Tree	Medium
703	Kth Largest Element in a Stream	Easy
704	Binary Search	Easy
705	Design HashSet	Easy
706	Design HashMap	Easy
707	Design Linked List	Medium
709	To Lower Case	Easy
710	Random Pick with Blacklist	Hard
712	Minimum ASCII Delete Sum for Two Strings	Medium
713	Subarray Product Less Than K	Medium
714	Best Time to Buy and Sell Stock with Transaction Fee	Medium
716	Max Stack	Easy
717	1-bit and 2-bit Characters	Easy
718	Maximum Length of Repeated Subarray	Medium
719	Find K-th Smallest Pair Distance	Hard
720	Longest Word in Dictionary	Medium
721	Accounts Merge	Medium
722	Remove Comments	Medium
723	Candy Crush	Medium
724	Find Pivot Index	Easy
725	Split Linked List in Parts	Medium
726	Number of Atoms	Hard
727	Minimum Window Subsequence	Hard
728	Self Dividing Numbers	Easy
729	My Calendar I	Medium
731	My Calendar II	Medium
732	My Calendar III	Hard
733	Flood Fill	Easy
734	Sentence Similarity	Easy
735	Asteroid Collision	Medium
736	Parse Lisp Expression	Hard
737	Sentence Similarity II	Medium
738	Monotone Increasing Digits	Medium
739	Daily Temperatures	Medium
740	Delete and Earn	Medium
742	Closest Leaf in a Binary Tree	Medium
743	Network Delay Time	Medium
744	Find Smallest Letter Greater Than Target	Easy
746	Min Cost Climbing Stairs	Easy
747	Largest Number At Least Twice of Others	Easy
748	Shortest Completing Word	Easy
750	Number Of Corner Rectangles	Medium
751	IP to CIDR	Medium
752	Open the Lock	Medium
753	Cracking the Safe	Hard
754	Reach a Number	Medium
755	Pour Water	Medium
756	Pyramid Transition Matrix	Medium
758	Bold Words in String	Medium
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	Medium
764	Largest Plus Sign	Medium
765	Couples Holding Hands	Hard
766	Toeplitz Matrix	Easy
767	Reorganize String	Medium
768	Max Chunks To Make Sorted II	Hard
769	Max Chunks To Make Sorted	Medium
770	Basic Calculator IV	Hard
771	Jewels and Stones	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	Medium
778	Swim in Rising Water	Hard
779	K-th Symbol in Grammar	Medium
780	Reaching Points	Hard
781	Rabbits in Forest	Medium
783	Minimum Distance Between BST Nodes	Easy
784	Letter Case Permutation	Medium
785	Is Graph Bipartite?	Medium
786	K-th Smallest Prime Fraction	Hard
787	Cheapest Flights Within K Stops	Medium
788	Rotated Digits	Medium
789	Escape The Ghosts	Medium
790	Domino and Tromino Tiling	Medium
791	Custom Sort String	Medium
792	Number of Matching Subsequences	Medium
794	Valid Tic-Tac-Toe State	Medium
795	Number of Subarrays with Bounded Maximum	Medium
796	Rotate String	Easy
797	All Paths From Source to Target	Medium
799	Champagne Tower	Medium
800	Similar RGB Color	Easy
801	Minimum Swaps To Make Sequences Increasing	Hard
802	Find Eventual Safe States	Medium
804	Unique Morse Code Words	Easy
805	Split Array With Same Average	Hard
806	Number of Lines To Write String	Easy
807	Max Increase to Keep City Skyline	Medium
808	Soup Servings	Medium
809	Expressive Words	Medium
810	Chalkboard XOR Game	Hard
811	Subdomain Visit Count	Medium
812	Largest Triangle Area	Easy
813	Largest Sum of Averages	Medium
814	Binary Tree Pruning	Medium
815	Bus Routes	Hard
816	Ambiguous Coordinates	Medium
817	Linked List Components	Medium
818	Race Car	Hard
819	Most Common Word	Easy
820	Short Encoding of Words	Medium
821	Shortest Distance to a Character	Easy
822	Card Flipping Game	Medium
823	Binary Trees With Factors	Medium
824	Goat Latin	Easy
825	Friends Of Appropriate Ages	Medium
826	Most Profit Assigning Work	Medium
827	Making A Large Island	Hard
828	Count Unique Characters of All Substrings of a Given String	Hard
829	Consecutive Numbers Sum	Hard
830	Positions of Large Groups	Easy
831	Masking Personal Information	Medium
832	Flipping an Image	Easy
833	Find And Replace in String	Medium
835	Image Overlap	Medium
836	Rectangle Overlap	Easy
837	New 21 Game	Medium
838	Push Dominoes	Medium
840	Magic Squares In Grid	Medium
841	Keys and Rooms	Medium
842	Split Array into Fibonacci Sequence	Medium
843	Guess the Word	Hard
844	Backspace String Compare	Easy
845	Longest Mountain in Array	Medium
846	Hand of Straights	Medium
847	Shortest Path Visiting All Nodes	Hard
848	Shifting Letters	Medium
849	Maximize Distance to Closest Person	Medium
851	Loud and Rich	Medium
852	Peak Index in a Mountain Array	Easy
853	Car Fleet	Medium
854	K-Similar Strings	Hard
855	Exam Room	Medium
856	Score of Parentheses	Medium
857	Minimum Cost to Hire K Workers	Hard
858	Mirror Reflection	Medium
859	Buddy Strings	Easy
860	Lemonade Change	Easy
861	Score After Flipping Matrix	Medium
862	Shortest Subarray with Sum at Least K	Hard
863	All Nodes Distance K in Binary Tree	Medium
865	Smallest Subtree with all the Deepest Nodes	Medium
866	Prime Palindrome	Medium
867	Transpose Matrix	Easy
868	Binary Gap	Easy
869	Reordered Power of 2	Medium
870	Advantage Shuffle	Medium
871	Minimum Number of Refueling Stops	Hard
872	Leaf-Similar Trees	Easy
873	Length of Longest Fibonacci Subsequence	Medium
874	Walking Robot Simulation	Easy
875	Koko Eating Bananas	Medium
876	Middle of the Linked List	Easy
877	Stone Game	Medium
880	Decoded String at Index	Medium
881	Boats to Save People	Medium
883	Projection Area of 3D Shapes	Easy
884	Uncommon Words from Two Sentences	Easy
885	Spiral Matrix III	Medium
886	Possible Bipartition	Medium
888	Fair Candy Swap	Easy
889	Construct Binary Tree from Preorder and Postorder Traversal	Medium
890	Find and Replace Pattern	Medium
891	Sum of Subsequence Widths	Hard
892	Surface Area of 3D Shapes	Easy
893	Groups of Special-Equivalent Strings	Medium
894	All Possible Full Binary Trees	Medium
895	Maximum Frequency Stack	Hard
896	Monotonic Array	Easy
897	Increasing Order Search Tree	Easy
898	Bitwise ORs of Subarrays	Medium
899	Orderly Queue	Hard
900	RLE Iterator	Medium
901	Online Stock Span	Medium
903	Valid Permutations for DI Sequence	Hard
904	Fruit Into Baskets	Medium
905	Sort Array By Parity	Easy
907	Sum of Subarray Minimums	Medium
908	Smallest Range I	Easy
909	Snakes and Ladders	Medium
910	Smallest Range II	Medium
911	Online Election	Medium
912	Sort an Array	Medium
914	X of a Kind in a Deck of Cards	Easy
915	Partition Array into Disjoint Intervals	Medium
916	Word Subsets	Medium
917	Reverse Only Letters	Easy
918	Maximum Sum Circular Subarray	Medium
919	Complete Binary Tree Inserter	Medium
921	Minimum Add to Make Parentheses Valid	Medium
922	Sort Array By Parity II	Easy
923	3Sum With Multiplicity	Medium
924	Minimize Malware Spread	Hard
925	Long Pressed Name	Easy
926	Flip String to Monotone Increasing	Medium
929	Unique Email Addresses	Easy
930	Binary Subarrays With Sum	Medium
931	Minimum Falling Path Sum	Medium
932	Beautiful Array	Medium
933	Number of Recent Calls	Easy
934	Shortest Bridge	Medium
935	Knight Dialer	Medium
937	Reorder Data in Log Files	Easy
938	Range Sum of BST	Easy
939	Minimum Area Rectangle	Medium
941	Valid Mountain Array	Easy
942	DI String Match	Easy
944	Delete Columns to Make Sorted	Easy
945	Minimum Increment to Make Array Unique	Medium
946	Validate Stack Sequences	Medium
947	Most Stones Removed with Same Row or Column	Medium
948	Bag of Tokens	Medium
949	Largest Time for Given Digits	Medium
950	Reveal Cards In Increasing Order	Medium
951	Flip Equivalent Binary Trees	Medium
953	Verifying an Alien Dictionary	Easy
954	Array of Doubled Pairs	Medium
955	Delete Columns to Make Sorted II	Medium
957	Prison Cells After N Days	Medium
958	Check Completeness of a Binary Tree	Medium
959	Regions Cut By Slashes	Medium
960	Delete Columns to Make Sorted III	Hard
961	N-Repeated Element in Size 2N Array	Easy
962	Maximum Width Ramp	Medium
963	Minimum Area Rectangle II	Medium
965	Univalued Binary Tree	Easy
966	Vowel Spellchecker	Medium
967	Numbers With Same Consecutive Differences	Medium
969	Pancake Sorting	Medium
970	Powerful Integers	Medium
971	Flip Binary Tree To Match Preorder Traversal	Medium
972	Equal Rational Numbers	Hard
973	K Closest Points to Origin	Medium
974	Subarray Sums Divisible by K	Medium
976	Largest Perimeter Triangle	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	Medium
984	String Without AAA or BBB	Medium
985	Sum of Even Numbers After Queries	Medium
986	Interval List Intersections	Medium
987	Vertical Order Traversal of a Binary Tree	Hard
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	Medium
995	Minimum Number of K Consecutive Bit Flips	Hard
997	Find the Town Judge	Easy
998	Maximum Binary Tree II	Medium
999	Available Captures for Rook	Easy
1002	Find Common Characters	Easy
1003	Check If Word Is Valid After Substitutions	Medium
1004	Max Consecutive Ones III	Medium
1005	Maximize Sum Of Array After K Negations	Easy
1006	Clumsy Factorial	Medium
1007	Minimum Domino Rotations For Equal Row	Medium
1008	Construct Binary Search Tree from Preorder Traversal	Medium
1009	Complement of Base 10 Integer	Easy
1010	Pairs of Songs With Total Durations Divisible by 60	Medium
1011	Capacity To Ship Packages Within D Days	Medium
1013	Partition Array Into Three Parts With Equal Sum	Easy
1014	Best Sightseeing Pair	Medium
1015	Smallest Integer Divisible by K	Medium
1016	Binary String With Substrings Representing 1 To N	Medium
1017	Convert to Base -2	Medium
1018	Binary Prefix Divisible By 5	Easy
1019	Next Greater Node In Linked List	Medium
1020	Number of Enclaves	Medium
1021	Remove Outermost Parentheses	Easy
1022	Sum of Root To Leaf Binary Numbers	Easy
1023	Camelcase Matching	Medium
1024	Video Stitching	Medium
1025	Divisor Game	Easy
1026	Maximum Difference Between Node and Ancestor	Medium
1027	Longest Arithmetic Subsequence	Medium
1028	Recover a Tree From Preorder Traversal	Hard
1029	Two City Scheduling	Medium
1030	Matrix Cells in Distance Order	Easy
1031	Maximum Sum of Two Non-Overlapping Subarrays	Medium
1032	Stream of Characters	Hard
1033	Moving Stones Until Consecutive	Medium
1034	Coloring A Border	Medium
1035	Uncrossed Lines	Medium
1036	Escape a Large Maze	Hard
1037	Valid Boomerang	Easy
1038	Binary Search Tree to Greater Sum Tree	Medium
1039	Minimum Score Triangulation of Polygon	Medium
1040	Moving Stones Until Consecutive II	Medium
1041	Robot Bounded In Circle	Medium
1042	Flower Planting With No Adjacent	Medium
1043	Partition Array for Maximum Sum	Medium
1044	Longest Duplicate Substring	Hard
1046	Last Stone Weight	Easy
1047	Remove All Adjacent Duplicates In String	Easy
1048	Longest String Chain	Medium
1049	Last Stone Weight II	Medium
1051	Height Checker	Easy
1052	Grumpy Bookstore Owner	Medium
1053	Previous Permutation With One Swap	Medium
1054	Distant Barcodes	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	Easy
1065	Index Pairs of a String	Easy
1066	Campus Bikes II	Medium
1071	Greatest Common Divisor of Strings	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
1078	Occurrences After Bigram	Easy
1079	Letter Tile Possibilities	Medium
1080	Insufficient Nodes in Root to Leaf Paths	Medium
1081	Smallest Subsequence of Distinct Characters	Medium
1085	Sum of Digits in the Minimum Number	Easy
1086	High Five	Easy
1087	Brace Expansion	Medium
1089	Duplicate Zeros	Easy
1090	Largest Values From Labels	Medium
1091	Shortest Path in Binary Matrix	Medium
1092	Shortest Common Supersequence	Hard
1093	Statistics from a Large Sample	Medium
1094	Car Pooling	Medium
1096	Brace Expansion II	Hard
1099	Two Sum Less Than K	Easy
1100	Find K-Length Substrings With No Repeated Characters	Medium
1101	The Earliest Moment When Everyone Become Friends	Medium
1102	Path With Maximum Minimum Value	Medium
1103	Distribute Candies to People	Easy
1104	Path In Zigzag Labelled Binary Tree	Medium
1105	Filling Bookcase Shelves	Medium
1106	Parsing A Boolean Expression	Hard
1108	Defanging an IP Address	Easy
1109	Corporate Flight Bookings	Medium
1110	Delete Nodes And Return Forest	Medium
1111	Maximum Nesting Depth of Two Valid Parentheses Strings	Medium
1114	Print in Order	Easy
1116	Print Zero Even Odd	Medium
1117	Building H2O	Medium
1118	Number of Days in a Month	Easy
1119	Remove Vowels from a String	Easy
1120	Maximum Average Subtree	Medium
1121	Divide Array Into Increasing Sequences	Hard
1122	Relative Sort Array	Easy
1123	Lowest Common Ancestor of Deepest Leaves	Medium
1124	Longest Well-Performing Interval	Medium
1128	Number of Equivalent Domino Pairs	Easy
1129	Shortest Path with Alternating Colors	Medium
1130	Minimum Cost Tree From Leaf Values	Medium
1131	Maximum of Absolute Value Expression	Medium
1133	Largest Unique Number	Easy
1134	Armstrong Number	Easy
1135	Connecting Cities With Minimum Cost	Medium
1136	Parallel Courses	Medium
1137	N-th Tribonacci Number	Easy
1138	Alphabet Board Path	Medium
1139	Largest 1-Bordered Square	Medium
1140	Stone Game II	Medium
1143	Longest Common Subsequence	Medium
1144	Decrease Elements To Make Array Zigzag	Medium
1145	Binary Tree Coloring Game	Medium
1146	Snapshot Array	Medium
1147	Longest Chunked Palindrome Decomposition	Hard
1150	Check If a Number Is Majority Element in a Sorted Array	Easy
1151	Minimum Swaps to Group All 1's Together	Medium
1152	Analyze User Website Visit Pattern	Medium
1154	Day of the Year	Easy
1155	Number of Dice Rolls With Target Sum	Medium
1156	Swap For Longest Repeated Character Substring	Medium
1160	Find Words That Can Be Formed by Characters	Easy
1161	Maximum Level Sum of a Binary Tree	Medium
1162	As Far from Land as Possible	Medium
1163	Last Substring in Lexicographical Order	Hard
1165	Single-Row Keyboard	Easy
1166	Design File System	Medium
1167	Minimum Cost to Connect Sticks	Medium
1168	Optimize Water Distribution in a Village	Hard
1169	Invalid Transactions	Medium
1170	Compare Strings by Frequency of the Smallest Character	Medium
1171	Remove Zero Sum Consecutive Nodes from Linked List	Medium
1172	Dinner Plate Stacks	Hard
1175	Prime Arrangements	Easy
1176	Diet Plan Performance	Easy
1177	Can Make Palindrome from Substring	Medium
1180	Count Substrings with Only One Distinct Letter	Easy
1181	Before and After Puzzle	Medium
1182	Shortest Distance to Target Color	Medium
1183	Maximum Number of Ones	Hard
1184	Distance Between Bus Stops	Easy
1185	Day of the Week	Easy
1186	Maximum Subarray Sum with One Deletion	Medium
1188	Design Bounded Blocking Queue	Medium
1189	Maximum Number of Balloons	Easy
1190	Reverse Substrings Between Each Pair of Parentheses	Medium
1191	K-Concatenation Maximum Sum	Medium
1192	Critical Connections in a Network	Hard
1195	Fizz Buzz Multithreaded	Medium
1196	How Many Apples Can You Put into the Basket	Easy
1197	Minimum Knight Moves	Medium
1198	Find Smallest Common Element in All Rows	Medium
1200	Minimum Absolute Difference	Easy
1201	Ugly Number III	Medium
1202	Smallest String With Swaps	Medium
1206	Design Skiplist	Hard
1207	Unique Number of Occurrences	Easy
1208	Get Equal Substrings Within Budget	Medium
1209	Remove All Adjacent Duplicates in String II	Medium
1210	Minimum Moves to Reach Target with Rotations	Hard
1213	Intersection of Three Sorted Arrays	Easy
1214	Two Sum BSTs	Medium
1215	Stepping Numbers	Medium
1216	Valid Palindrome III	Hard
1217	Minimum Cost to Move Chips to The Same Position	Easy
1218	Longest Arithmetic Subsequence of Given Difference	Medium
1219	Path with Maximum Gold	Medium
1220	Count Vowels Permutation	Hard
1221	Split a String in Balanced Strings	Easy
1222	Queens That Can Attack the King	Medium
1223	Dice Roll Simulation	Hard
1224	Maximum Equal Frequency	Hard
1226	The Dining Philosophers	Medium
1227	Airplane Seat Assignment Probability	Medium
1228	Missing Number In Arithmetic Progression	Easy
1229	Meeting Scheduler	Medium
1230	Toss Strange Coins	Medium
1231	Divide Chocolate	Hard
1232	Check If It Is a Straight Line	Easy
1233	Remove Sub-Folders from the Filesystem	Medium
1234	Replace the Substring for Balanced String	Medium
1235	Maximum Profit in Job Scheduling	Hard
1237	Find Positive Integer Solution for a Given Equation	Medium
1238	Circular Permutation in Binary Representation	Medium
1239	Maximum Length of a Concatenated String with Unique Characters	Medium
1240	Tiling a Rectangle with the Fewest Squares	Hard
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	Medium
1248	Count Number of Nice Subarrays	Medium
1249	Minimum Remove to Make Valid Parentheses	Medium
1250	Check If It Is a Good Array	Hard
1252	Cells with Odd Values in a Matrix	Easy
1253	Reconstruct a 2-Row Binary Matrix	Medium
1254	Number of Closed Islands	Medium
1255	Maximum Score Words Formed by Letters	Hard
1256	Encode Number	Medium
1257	Smallest Common Region	Medium
1258	Synonymous Sentences	Medium
1259	Handshakes That Don't Cross	Hard
1260	Shift 2D Grid	Easy
1261	Find Elements in a Contaminated Binary Tree	Medium
1262	Greatest Sum Divisible by Three	Medium
1263	Minimum Moves to Move a Box to Their Target Location	Hard
1265	Print Immutable Linked List in Reverse	Medium
1266	Minimum Time Visiting All Points	Easy
1267	Count Servers that Communicate	Medium
1268	Search Suggestions System	Medium
1271	Hexspeak	Easy
1272	Remove Interval	Medium
1273	Delete Tree Nodes	Medium
1274	Number of Ships in a Rectangle	Hard
1275	Find Winner on a Tic Tac Toe Game	Easy
1276	Number of Burgers with No Waste of Ingredients	Medium
1277	Count Square Submatrices with All Ones	Medium
1278	Palindrome Partitioning III	Hard
1279	Traffic Light Controlled Intersection	Easy
1281	Subtract the Product and Sum of Digits of an Integer	Easy
1282	Group the People Given the Group Size They Belong To	Medium
1283	Find the Smallest Divisor Given a Threshold	Medium
1284	Minimum Number of Flips to Convert Binary Matrix to Zero Matrix	Hard
1286	Iterator for Combination	Medium
1287	Element Appearing More Than 25% In Sorted Array	Easy
1288	Remove Covered Intervals	Medium
1289	Minimum Falling Path Sum II	Hard
1290	Convert Binary Number in a Linked List to Integer	Easy
1291	Sequential Digits	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
1295	Find Numbers with Even Number of Digits	Easy
1296	Divide Array in Sets of K Consecutive Numbers	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	Easy
1300	Sum of Mutated Array Closest to Target	Medium
1302	Deepest Leaves Sum	Medium
1304	Find N Unique Integers Sum up to Zero	Easy
1305	All Elements in Two Binary Search Trees	Medium
1306	Jump Game III	Medium
1309	Decrypt String from Alphabet to Integer Mapping	Easy
1310	XOR Queries of a Subarray	Medium
1311	Get Watched Videos by Your Friends	Medium
1312	Minimum Insertion Steps to Make a String Palindrome	Hard
1313	Decompress Run-Length Encoded List	Easy
1314	Matrix Block Sum	Medium
1315	Sum of Nodes with Even-Valued Grandparent	Medium
1316	Distinct Echo Substrings	Hard
1317	Convert Integer to the Sum of Two No-Zero Integers	Easy
1318	Minimum Flips to Make a OR b Equal to c	Medium
1319	Number of Operations to Make Network Connected	Medium
1320	Minimum Distance to Type a Word Using Two Fingers	Hard
1323	Maximum 69 Number	Easy
1324	Print Words Vertically	Medium
1325	Delete Leaves With a Given Value	Medium
1326	Minimum Number of Taps to Open to Water a Garden	Hard
1328	Break a Palindrome	Medium
1329	Sort the Matrix Diagonally	Medium
1330	Reverse Subarray To Maximize Array Value	Hard
1331	Rank Transform of an Array	Easy
1332	Remove Palindromic Subsequences	Easy
1333	Filter Restaurants by Vegan-Friendly, Price and Distance	Medium
1334	Find the City With the Smallest Number of Neighbors at a Threshold Distance	Medium
1335	Minimum Difficulty of a Job Schedule	Hard
1337	The K Weakest Rows in a Matrix	Easy
1338	Reduce Array Size to The Half	Medium
1339	Maximum Product of Splitted Binary Tree	Medium
1340	Jump Game V	Hard
1342	Number of Steps to Reduce a Number to Zero	Easy
1343	Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold	Medium
1344	Angle Between Hands of a Clock	Medium
1346	Check If N and Its Double Exist	Easy
1347	Minimum Number of Steps to Make Two Strings Anagram	Medium
1348	Tweet Counts Per Frequency	Medium
1351	Count Negative Numbers in a Sorted Matrix	Easy
1352	Product of the Last K Numbers	Medium
1353	Maximum Number of Events That Can Be Attended	Medium
1356	Sort Integers by The Number of 1 Bits	Easy
1357	Apply Discount Every n Orders	Medium
1358	Number of Substrings Containing All Three Characters	Medium
1359	Count All Valid Pickup and Delivery Options	Hard
1360	Number of Days Between Two Dates	Easy
1361	Validate Binary Tree Nodes	Medium
1362	Closest Divisors	Medium
1365	How Many Numbers Are Smaller Than the Current Number	Easy
1366	Rank Teams by Votes	Medium
1367	Linked List in Binary Tree	Medium
1368	Minimum Cost to Make at Least One Valid Path in a Grid	Hard
1370	Increasing Decreasing String	Easy
1371	Find the Longest Substring Containing Vowels in Even Counts	Medium
1372	Longest ZigZag Path in a Binary Tree	Medium
1374	Generate a String With Characters That Have Odd Counts	Easy
1375	Bulb Switcher III	Medium
1376	Time Needed to Inform All Employees	Medium
1377	Frog Position After T Seconds	Hard
1380	Lucky Numbers in a Matrix	Easy
1381	Design a Stack With Increment Operation	Medium
1382	Balance a Binary Search Tree	Medium
1383	Maximum Performance of a Team	Hard
1385	Find the Distance Value Between Two Arrays	Easy
1386	Cinema Seat Allocation	Medium
1387	Sort Integers by The Power Value	Medium
1389	Create Target Array in the Given Order	Easy
1390	Four Divisors	Medium
1391	Check if There is a Valid Path in a Grid	Medium
1394	Find Lucky Integer in an Array	Easy
1395	Count Number of Teams	Medium
1396	Design Underground System	Medium
1399	Count Largest Group	Easy
1428	Leftmost Column with at Least a One	Medium
1458	Max Dot Product of Two Subsequences	Hard
1494	Parallel Courses II	Hard
1499	Max Value of Equation	Hard
1531	String Compression II	Hard
1533	Find the Index of the Large Integer	Medium
1538	Guess the Majority in a Hidden Array	Medium
1591	Strange Printer II	Hard
1611	Minimum One Bit Operations to Make Integers Zero	Hard
1617	Count Subtrees With Max Distance Between Cities	Hard
1631	Path With Minimum Effort	Medium
1636	Sort Array by Increasing Frequency	Easy
1637	Widest Vertical Area Between Two Points Containing No Points	Medium
1638	Count Substrings That Differ by One Character	Medium
1640	Check Array Formation Through Concatenation	Easy
1641	Count Sorted Vowel Strings	Medium
1642	Furthest Building You Can Reach	Medium
1643	Kth Smallest Instructions	Hard
1646	Get Maximum in Generated Array	Easy
1647	Minimum Deletions to Make Character Frequencies Unique	Medium
1648	Sell Diminishing-Valued Colored Balls	Medium
1652	Defuse the Bomb	Easy
1653	Minimum Deletions to Make String Balanced	Medium
1654	Minimum Jumps to Reach Home	Medium
1656	Design an Ordered Stream	Easy
1657	Determine if Two Strings Are Close	Medium
1658	Minimum Operations to Reduce X to Zero	Medium
1659	Maximize Grid Happiness	Hard
1668	Maximum Repeating Substring	Easy
1669	Merge In Between Linked Lists	Medium
1670	Design Front Middle Back Queue	Medium
1671	Minimum Number of Removals to Make Mountain Array	Hard
1673	Find the Most Competitive Subsequence	Medium
1674	Minimum Moves to Make Array Complementary	Medium
1678	Goal Parser Interpretation	Easy
1679	Max Number of K-Sum Pairs	Medium
1680	Concatenation of Consecutive Binary Numbers	Medium
1681	Minimum Incompatibility	Hard
1682	Longest Palindromic Subsequence II	Medium
1684	Count the Number of Consistent Strings	Easy
1685	Sum of Absolute Differences in a Sorted Array	Medium
1686	Stone Game VI	Medium
1688	Count of Matches in Tournament	Easy
1689	Partitioning Into Minimum Number Of Deci-Binary Numbers	Medium
1690	Stone Game VII	Medium
1691	Maximum Height by Stacking Cuboids	Hard
1692	Count Ways to Distribute Candies	Hard
1694	Reformat Phone Number	Easy
1695	Maximum Erasure Value	Medium
1696	Jump Game VI	Medium
1697	Checking Existence of Edge Length Limited Paths	Hard
1698	Number of Distinct Substrings in a String	Medium
1700	Number of Students Unable to Eat Lunch	Easy
1701	Average Waiting Time	Medium
1702	Maximum Binary String After Change	Medium
1704	Determine if String Halves Are Alike	Easy
1705	Maximum Number of Eaten Apples	Medium
1706	Where Will the Ball Fall	Medium
1708	Largest Subarray Length K	Easy
1710	Maximum Units on a Truck	Easy
1711	Count Good Meals	Medium
1712	Ways to Split Array Into Three Subarrays	Medium
1713	Minimum Operations to Make a Subsequence	Hard
1716	Calculate Money in Leetcode Bank	Easy
1717	Maximum Score From Removing Substrings	Medium
1718	Construct the Lexicographically Largest Valid Sequence	Medium
1720	Decode XORed Array	Easy
1721	Swapping Nodes in a Linked List	Medium
1722	Minimize Hamming Distance After Swap Operations	Medium
1725	Number Of Rectangles That Can Form The Largest Square	Easy
1726	Tuple with Same Product	Medium
1730	Shortest Path to Get Food	Medium
1732	Find the Highest Altitude	Easy
1733	Minimum Number of People to Teach	Medium
1734	Decode XORed Permutation	Medium
1736	Latest Time by Replacing Hidden Digits	Easy
1737	Change Minimum Characters to Satisfy One of Three Conditions	Medium
1738	Find Kth Largest XOR Coordinate Value	Medium
1740	Find Distance in a Binary Tree	Medium
1746	Maximum Subarray Sum After One Operation	Medium
1748	Sum of Unique Elements	Easy
1752	Check if Array Is Sorted and Rotated	Easy
1758	Minimum Changes To Make Alternating Binary String	Easy
1760	Minimum Limit of Balls in a Bag	Medium
1769	Minimum Number of Operations to Move All Balls to Each Box	Medium
1773	Count Items Matching a Rule	Easy
1779	Find Nearest Point That Has the Same X or Y Coordinate	Easy
1784	Check if Binary String Has at Most One Segment of Ones	Easy
1790	Check if One String Swap Can Make Strings Equal	Easy
1791	Find Center of Star Graph	Easy
1792	Maximum Average Pass Ratio	Medium
1794	Count Pairs of Equal Substrings With Minimum Difference	Medium
1796	Second Largest Digit in a String	Easy
1797	Design Authentication Manager	Medium
1798	Maximum Number of Consecutive Values You Can Make	Medium
1800	Maximum Ascending Subarray Sum	Easy
1801	Number of Orders in the Backlog	Medium
1802	Maximum Value at a Given Index in a Bounded Array	Medium
1804	Implement Trie II (Prefix Tree)	Medium
1805	Number of Different Integers in a String	Easy
1806	Minimum Number of Operations to Reinitialize a Permutation	Medium
1807	Evaluate the Bracket Pairs of a String	Medium
1810	Minimum Path Cost in a Hidden Grid	Medium
1812	Determine Color of a Chessboard Square	Easy
1813	Sentence Similarity III	Medium
1814	Count Nice Pairs in an Array	Medium
1816	Truncate Sentence	Easy
1817	Finding the Users Active Minutes	Medium
1818	Minimum Absolute Sum Difference	Medium
1820	Maximum Number of Accepted Invitations	Medium
1822	Sign of the Product of an Array	Easy
1823	Find the Winner of the Circular Game	Medium
1824	Minimum Sideway Jumps	Medium
1826	Faulty Sensor	Easy
1827	Minimum Operations to Make the Array Increasing	Easy
1828	Queries on Number of Points Inside a Circle	Medium
1829	Maximum XOR for Each Query	Medium
1832	Check if the Sentence Is Pangram	Easy
1833	Maximum Ice Cream Bars	Medium
1836	Remove Duplicates From an Unsorted Linked List	Medium
1837	Sum of Digits in Base K	Easy
1838	Frequency of the Most Frequent Element	Medium
1839	Longest Substring Of All Vowels in Order	Medium
1844	Replace All Digits with Characters	Easy
1848	Minimum Distance to the Target Element	Easy
1854	Maximum Population Year	Easy
1859	Sorting the Sentence	Easy
1863	Sum of All Subset XOR Totals	Easy
1869	Longer Contiguous Segments of Ones than Zeros	Easy
1876	Substrings of Size Three with Distinct Characters	Easy
1880	Check if Word Equals Summation of Two Words	Easy
1886	Determine Whether Matrix Can Be Obtained By Rotation	Easy
1893	Check if All the Integers in a Range Are Covered	Easy