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1. Two Sum
2. Add Two Numbers
3. Longest Substring Without Repeating Characters
4. Median of Two Sorted Arrays
5. Longest Palindromic Substring
6. ZigZag Conversion
7. Reverse Integer
8. String to Integer (atoi)
9. Palindrome Number
10. Regular Expression Matching
11. Container With Most Water
12. Integer to Roman
13. Roman to Integer
14. Longest Common Prefix
15. 3Sum
16. 3Sum Closest
17. Letter Combinations of a Phone Number
18. 4Sum
19. Remove Nth Node From End of List
20. Valid Parentheses
21. Merge Two Sorted Lists
22. Generate Parentheses
23. Merge k Sorted Lists
24. Swap Nodes in Pairs
25. Reverse Nodes in k-Group
26. Remove Duplicates from Sorted Array
27. Remove Element
28. Implement strStr()
29. Divide Two Integers
30. Substring with Concatenation of All Words
31. Next Permutation
32. Longest Valid Parentheses
33. Search in Rotated Sorted Array
34. Find First and Last Position of Element in Sorted Array
35. Search Insert Position
36. Valid Sudoku
37. Sudoku Solver
38. Count and Say
39. Combination Sum
40. Combination Sum II
41. First Missing Positive
42. Trapping Rain Water
43. Multiply Strings
44. Wildcard Matching
45. Jump Game II
46. Permutations
47. Permutations II
48. Rotate Image
49. Group Anagrams
50. Pow(x, n)
51. N-Queens
52. N-Queens II
53. Maximum Subarray
54. Spiral Matrix
55. Jump Game
56. Merge Intervals
57. Insert Interval
58. Length of Last Word
59. Spiral Matrix II
60. Permutation Sequence
61. Rotate List
62. Unique Paths
63. Unique Paths II
64. Minimum Path Sum
65. Valid Number
66. Plus One
67. Add Binary
68. Text Justification
69. Sqrt(x)
70. Climbing Stairs
71. Simplify Path
72. Edit Distance
73. Set Matrix Zeroes
74. Search a 2D Matrix
75. Sort Colors
76. Minimum Window Substring
77. Combinations
78. Subsets
79. Word Search
80. Remove Duplicates from Sorted Array II
81. Search in Rotated Sorted Array II
82. Remove Duplicates from Sorted List II
83. Remove Duplicates from Sorted List
84. Largest Rectangle in Histogram
85. Maximal Rectangle
86. Partition List
87. Scramble String
88. Merge Sorted Array
89. Gray Code
90. Subsets II
91. Decode Ways
92. Reverse Linked List II
93. Restore IP Addresses
94. Binary Tree Inorder Traversal
95. Unique Binary Search Trees II
96. Unique Binary Search Trees
97. Interleaving String
98. Validate Binary Search Tree
99. Recover Binary Search Tree
100. Same Tree
101. Symmetric Tree
102. Binary Tree Level Order Traversal
103. Binary Tree Zigzag Level Order Traversal
104. Maximum Depth of Binary Tree
105. Construct Binary Tree from Preorder and Inorder Traversal
106. Construct Binary Tree from Inorder and Postorder Traversal
107. Binary Tree Level Order Traversal II
108. Convert Sorted Array to Binary Search Tree
109. Convert Sorted List to Binary Search Tree
110. Balanced Binary Tree
111. Minimum Depth of Binary Tree
112. Path Sum
113. Path Sum II
114. Flatten Binary Tree to Linked List
115. Distinct Subsequences
116. Populating Next Right Pointers in Each Node
117. Populating Next Right Pointers in Each Node II
118. Pascal's Triangle
119. Pascal's Triangle II
120. Triangle
121. Best Time to Buy and Sell Stock
122. Best Time to Buy and Sell Stock II
123. Best Time to Buy and Sell Stock III
124. Binary Tree Maximum Path Sum
125. Valid Palindrome
126. Word Ladder II
127. Word Ladder
128. Longest Consecutive Sequence
129. Sum Root to Leaf Numbers
130. Surrounded Regions
131. Palindrome Partitioning
132. Palindrome Partitioning II
133. Clone Graph
134. Gas Station
135. Candy
136. Single Number
137. Single Number II
138. Copy List with Random Pointer
139. Word Break
140. Word Break II
141. Linked List Cycle
142. Linked List Cycle II
143. Reorder List
144. Binary Tree Preorder Traversal
145. Binary Tree Postorder Traversal
146. LRU Cache
147. Insertion Sort List
148. Sort List
149. Max Points on a Line
150. Evaluate Reverse Polish Notation
151. Reverse Words in a String
152. Maximum Product Subarray
153. Find Minimum in Rotated Sorted Array
154. Find Minimum in Rotated Sorted Array II
155. Min Stack
156. Binary Tree Upside Down
157. Read N Characters Given Read4
158. Read N Characters Given Read4 II - Call multiple times
159. Longest Substring with At Most Two Distinct Characters
160. Intersection of Two Linked Lists
161. One Edit Distance
162. Find Peak Element
163. Missing Ranges
164. Maximum Gap
165. Compare Version Numbers
166. Fraction to Recurring Decimal
167. Two Sum II - Input array is sorted
168. Excel Sheet Column Title
169. Majority Element
170. Two Sum III - Data structure design
171. Excel Sheet Column Number
172. Factorial Trailing Zeroes
173. Binary Search Tree Iterator
174. Dungeon Game
175. Combine Two Tables
176. Second Highest Salary
177. Nth Highest Salary
178. Rank Scores
179. Largest Number
180. Consecutive Numbers
181. Employees Earning More Than Their Managers
182. Duplicate Emails
183. Customers Who Never Order
184. Department Highest Salary
185. Department Top Three Salaries
186. Reverse Words in a String II
187. Repeated DNA Sequences
188. Best Time to Buy and Sell Stock IV
189. Rotate Array
190. Reverse Bits
191. Number of 1 Bits
192. Word Frequency
193. Valid Phone Numbers
194. Transpose File
195. Tenth Line
196. Delete Duplicate Emails
197. Rising Temperature
198. House Robber
199. Binary Tree Right Side View
200. Number of Islands
201. Bitwise AND of Numbers Range
202. Happy Number
203. Remove Linked List Elements
204. Count Primes
205. Isomorphic Strings
206. Reverse Linked List
207. Course Schedule
208. Implement Trie (Prefix Tree)
209. Minimum Size Subarray Sum
210. Course Schedule II
211. Design Add and Search Words Data Structure
212. Word Search II
213. House Robber II
214. Shortest Palindrome
215. Kth Largest Element in an Array
216. Combination Sum III
217. Contains Duplicate
218. The Skyline Problem
219. Contains Duplicate II
220. Contains Duplicate III
221. Maximal Square
222. Count Complete Tree Nodes
223. Rectangle Area
224. Basic Calculator
225. Implement Stack using Queues
226. Invert Binary Tree
227. Basic Calculator II
228. Summary Ranges
229. Majority Element II
230. Kth Smallest Element in a BST
231. Power of Two
232. Implement Queue using Stacks
233. Number of Digit One
234. Palindrome Linked List
235. Lowest Common Ancestor of a Binary Search Tree
236. Lowest Common Ancestor of a Binary Tree
237. Delete Node in a Linked List
238. Product of Array Except Self
239. Sliding Window Maximum
240. Search a 2D Matrix II
241. Different Ways to Add Parentheses
242. Valid Anagram
243. Shortest Word Distance
244. Shortest Word Distance II
245. Shortest Word Distance III
246. Strobogrammatic Number
247. Strobogrammatic Number II
248. Strobogrammatic Number III
249. Group Shifted Strings
250. Count Univalue Subtrees
251. Flatten 2D Vector
252. Meeting Rooms
253. Meeting Rooms II
254. Factor Combinations
255. Verify Preorder Sequence in Binary Search Tree
256. Paint House
257. Binary Tree Paths
258. Add Digits
259. 3Sum Smaller
260. Single Number III
261. Graph Valid Tree
262. Trips and Users
263. Ugly Number
264. Ugly Number II
265. Paint House II
266. Palindrome Permutation
267. Palindrome Permutation II
268. Missing Number
269. Alien Dictionary
270. Closest Binary Search Tree Value
271. Encode and Decode Strings
272. Closest Binary Search Tree Value II
273. Integer to English Words
274. H-Index
275. H-Index II
276. Paint Fence
277. Find the Celebrity
278. First Bad Version
279. Perfect Squares
280. Wiggle Sort
281. Zigzag Iterator
282. Expression Add Operators
283. Move Zeroes
284. Peeking Iterator
285. Inorder Successor in BST
286. Walls and Gates
287. Find the Duplicate Number
288. Unique Word Abbreviation
289. Game of Life
290. Word Pattern
291. Word Pattern II
292. Nim Game
293. Flip Game
294. Flip Game II
295. Find Median from Data Stream
296. Best Meeting Point
297. Serialize and Deserialize Binary Tree
298. Binary Tree Longest Consecutive Sequence
299. Bulls and Cows
300. Longest Increasing Subsequence
301. Remove Invalid Parentheses
302. Smallest Rectangle Enclosing Black Pixels
303. Range Sum Query - Immutable
304. Range Sum Query 2D - Immutable
305. Number of Islands II
306. Additive Number
307. Range Sum Query - Mutable
308. Range Sum Query 2D - Mutable
309. Best Time to Buy and Sell Stock with Cooldown
310. Minimum Height Trees
311. Sparse Matrix Multiplication
312. Burst Balloons
313. Super Ugly Number
314. Binary Tree Vertical Order Traversal
315. Count of Smaller Numbers After Self
316. Remove Duplicate Letters
317. Shortest Distance from All Buildings
318. Maximum Product of Word Lengths
319. Bulb Switcher
320. Generalized Abbreviation
321. Create Maximum Number
322. Coin Change
323. Number of Connected Components in an Undirected Graph
324. Wiggle Sort II
325. Maximum Size Subarray Sum Equals k
326. Power of Three
327. Count of Range Sum
328. Odd Even Linked List
329. Longest Increasing Path in a Matrix
330. Patching Array
331. Verify Preorder Serialization of a Binary Tree
332. Reconstruct Itinerary
333. Largest BST Subtree
334. Increasing Triplet Subsequence
335. Self Crossing
336. Palindrome Pairs
337. House Robber III
338. Counting Bits
339. Nested List Weight Sum
340. Longest Substring with At Most K Distinct Characters
341. Flatten Nested List Iterator
342. Power of Four
343. Integer Break
344. Reverse String
345. Reverse Vowels of a String
346. Moving Average from Data Stream
347. Top K Frequent Elements
348. Design Tic-Tac-Toe
349. Intersection of Two Arrays
350. Intersection of Two Arrays II
351. Android Unlock Patterns
352. Data Stream as Disjoint Intervals
353. Design Snake Game
354. Russian Doll Envelopes
355. Design Twitter
356. Line Reflection
357. Count Numbers with Unique Digits
358. Rearrange String k Distance Apart
359. Logger Rate Limiter
360. Sort Transformed Array
361. Bomb Enemy
362. Design Hit Counter
363. Max Sum of Rectangle No Larger Than K
364. Nested List Weight Sum II
365. Water and Jug Problem
366. Find Leaves of Binary Tree
367. Valid Perfect Square
368. Largest Divisible Subset
369. Plus One Linked List
370. Range Addition
371. Sum of Two Integers
372. Super Pow
373. Find K Pairs with Smallest Sums
374. Guess Number Higher or Lower
375. Guess Number Higher or Lower II
376. Wiggle Subsequence
377. Combination Sum IV
378. Kth Smallest Element in a Sorted Matrix
379. Design Phone Directory
380. Insert Delete GetRandom O(1)
381. Insert Delete GetRandom O(1) - Duplicates allowed
382. Linked List Random Node
383. Ransom Note
384. Shuffle an Array
385. Mini Parser
386. Lexicographical Numbers
387. First Unique Character in a String
388. Longest Absolute File Path
389. Find the Difference
390. Elimination Game
391. Perfect Rectangle
392. Is Subsequence
393. UTF-8 Validation
394. Decode String
395. Longest Substring with At Least K Repeating Characters
396. Rotate Function
397. Integer Replacement
398. Random Pick Index
399. Evaluate Division
400. Nth Digit
401. Binary Watch
402. Remove K Digits
403. Frog Jump
404. Sum of Left Leaves
405. Convert a Number to Hexadecimal
406. Queue Reconstruction by Height
407. Trapping Rain Water II
408. Valid Word Abbreviation
409. Longest Palindrome
410. Split Array Largest Sum
411. Minimum Unique Word Abbreviation
412. Fizz Buzz
413. Arithmetic Slices
414. Third Maximum Number
415. Add Strings
416. Partition Equal Subset Sum
417. Pacific Atlantic Water Flow
418. Sentence Screen Fitting
419. Battleships in a Board
420. Strong Password Checker
421. Maximum XOR of Two Numbers in an Array
422. Valid Word Square
423. Reconstruct Original Digits from English
424. Longest Repeating Character Replacement
425. Word Squares
426. Convert Binary Search Tree to Sorted Doubly Linked List
427. Construct Quad Tree
428. Serialize and Deserialize N-ary Tree
429. N-ary Tree Level Order Traversal
430. Flatten a Multilevel Doubly Linked List
431. Encode N-ary Tree to Binary Tree
432. All O`one Data Structure
433. Minimum Genetic Mutation
434. Number of Segments in a String
435. Non-overlapping Intervals
436. Find Right Interval
437. Path Sum III
438. Find All Anagrams in a String
439. Ternary Expression Parser
440. K-th Smallest in Lexicographical Order
441. Arranging Coins
442. Find All Duplicates in an Array
443. String Compression
444. Sequence Reconstruction
445. Add Two Numbers II
446. Arithmetic Slices II - Subsequence
447. Number of Boomerangs
448. Find All Numbers Disappeared in an Array
449. Serialize and Deserialize BST
450. Delete Node in a BST
451. Sort Characters By Frequency
452. Minimum Number of Arrows to Burst Balloons
453. Minimum Moves to Equal Array Elements
454. 4Sum II
455. Assign Cookies
456. 132 Pattern
457. Circular Array Loop
458. Poor Pigs
459. Repeated Substring Pattern
460. LFU Cache
461. Hamming Distance
462. Minimum Moves to Equal Array Elements II
463. Island Perimeter
464. Can I Win
465. Optimal Account Balancing
466. Count The Repetitions
467. Unique Substrings in Wraparound String
468. Validate IP Address
469. Convex Polygon
470. Implement Rand10() Using Rand7()
471. Encode String with Shortest Length
472. Concatenated Words
473. Matchsticks to Square
474. Ones and Zeroes
475. Heaters
476. Number Complement
477. Total Hamming Distance
478. Generate Random Point in a Circle
479. Largest Palindrome Product
480. Sliding Window Median
481. Magical String
482. License Key Formatting
483. Smallest Good Base
484. Find Permutation
485. Max Consecutive Ones
486. Predict the Winner
487. Max Consecutive Ones II
488. Zuma Game
489. Robot Room Cleaner
490. The Maze
491. Increasing Subsequences
492. Construct the Rectangle
493. Reverse Pairs
494. Target Sum
495. Teemo Attacking
496. Next Greater Element I
497. Random Point in Non-overlapping Rectangles
498. Diagonal Traverse
499. The Maze III
500. Keyboard Row
501. Find Mode in Binary Search Tree
502. IPO
503. Next Greater Element II
504. Base 7
505. The Maze II
506. Relative Ranks
507. Perfect Number
508. Most Frequent Subtree Sum
509. Fibonacci Number
510. Inorder Successor in BST II
511. Game Play Analysis I
512. Game Play Analysis II
513. Find Bottom Left Tree Value
514. Freedom Trail
515. Find Largest Value in Each Tree Row
516. Longest Palindromic Subsequence
517. Super Washing Machines
518. Coin Change 2
519. Random Flip Matrix
520. Detect Capital
521. Longest Uncommon Subsequence I
522. Longest Uncommon Subsequence II
523. Continuous Subarray Sum
524. Longest Word in Dictionary through Deleting
525. Contiguous Array
526. Beautiful Arrangement
527. Word Abbreviation
528. Random Pick with Weight
529. Minesweeper
530. Minimum Absolute Difference in BST
531. Lonely Pixel I
532. K-diff Pairs in an Array
533. Lonely Pixel II
534. Game Play Analysis III
535. Encode and Decode TinyURL
536. Construct Binary Tree from String
537. Complex Number Multiplication
538. Convert BST to Greater Tree
539. Minimum Time Difference
540. Single Element in a Sorted Array
541. Reverse String II
542. 01 Matrix
543. Diameter of Binary Tree
544. Output Contest Matches
545. Boundary of Binary Tree
546. Remove Boxes
547. Friend Circles
548. Split Array with Equal Sum
549. Binary Tree Longest Consecutive Sequence II
550. Game Play Analysis IV
551. Student Attendance Record I
552. Student Attendance Record II
553. Optimal Division
554. Brick Wall
555. Split Concatenated Strings
556. Next Greater Element III
557. Reverse Words in a String III
558. Logical OR of Two Binary Grids Represented as Quad-Trees
559. Maximum Depth of N-ary Tree
560. Subarray Sum Equals K
561. Array Partition I
562. Longest Line of Consecutive One in Matrix
563. Binary Tree Tilt
564. Find the Closest Palindrome
565. Array Nesting
566. Reshape the Matrix
567. Permutation in String
568. Maximum Vacation Days
569. Median Employee Salary
570. Managers with at Least 5 Direct Reports
571. Find Median Given Frequency of Numbers
572. Subtree of Another Tree
573. Squirrel Simulation
574. Winning Candidate
575. Distribute Candies
576. Out of Boundary Paths
577. Employee Bonus
578. Get Highest Answer Rate Question
579. Find Cumulative Salary of an Employee
580. Count Student Number in Departments
581. Shortest Unsorted Continuous Subarray
582. Kill Process
583. Delete Operation for Two Strings
584. Find Customer Referee
585. Investments in 2016
586. Customer Placing the Largest Number of Orders
587. Erect the Fence
588. Design In-Memory File System
589. N-ary Tree Preorder Traversal
590. N-ary Tree Postorder Traversal
591. Tag Validator
592. Fraction Addition and Subtraction
593. Valid Square
594. Longest Harmonious Subsequence
595. Big Countries
596. Classes More Than 5 Students
597. Friend Requests I: Overall Acceptance Rate
598. Range Addition II
599. Minimum Index Sum of Two Lists
600. Non-negative Integers without Consecutive Ones
601. Human Traffic of Stadium
602. Friend Requests II: Who Has the Most Friends
603. Consecutive Available Seats
604. Design Compressed String Iterator
605. Can Place Flowers
606. Construct String from Binary Tree
607. Sales Person
608. Tree Node
609. Find Duplicate File in System
610. Triangle Judgement
611. Valid Triangle Number
612. Shortest Distance in a Plane
613. Shortest Distance in a Line
614. Second Degree Follower
615. Average Salary: Departments VS Company
616. Add Bold Tag in String
617. Merge Two Binary Trees
618. Students Report By Geography
619. Biggest Single Number
620. Not Boring Movies
621. Task Scheduler
622. Design Circular Queue
623. Add One Row to Tree
624. Maximum Distance in Arrays
625. Minimum Factorization
626. Exchange Seats
627. Swap Salary
628. Maximum Product of Three Numbers
629. K Inverse Pairs Array
630. Course Schedule III
631. Design Excel Sum Formula
632. Smallest Range Covering Elements from K Lists
633. Sum of Square Numbers
634. Find the Derangement of An Array
635. Design Log Storage System
636. Exclusive Time of Functions
637. Average of Levels in Binary Tree
638. Shopping Offers
639. Decode Ways II
640. Solve the Equation
641. Design Circular Deque
642. Design Search Autocomplete System
643. Maximum Average Subarray I
644. Maximum Average Subarray II
645. Set Mismatch
646. Maximum Length of Pair Chain
647. Palindromic Substrings
648. Replace Words
649. Dota2 Senate
650. 2 Keys Keyboard
651. 4 Keys Keyboard
652. Find Duplicate Subtrees
653. Two Sum IV - Input is a BST
654. Maximum Binary Tree
655. Print Binary Tree
656. Coin Path
657. Robot Return to Origin
658. Find K Closest Elements
659. Split Array into Consecutive Subsequences
660. Remove 9
661. Image Smoother
662. Maximum Width of Binary Tree
663. Equal Tree Partition
664. Strange Printer
665. Non-decreasing Array
666. Path Sum IV
667. Beautiful Arrangement II
668. Kth Smallest Number in Multiplication Table
669. Trim a Binary Search Tree
670. Maximum Swap
671. Second Minimum Node In a Binary Tree
672. Bulb Switcher II
673. Number of Longest Increasing Subsequence
674. Longest Continuous Increasing Subsequence
675. Cut Off Trees for Golf Event
676. Implement Magic Dictionary
677. Map Sum Pairs
678. Valid Parenthesis String
679. 24 Game
680. Valid Palindrome II
681. Next Closest Time
682. Baseball Game
683. K Empty Slots
684. Redundant Connection
685. Redundant Connection II
686. Repeated String Match
687. Longest Univalue Path
688. Knight Probability in Chessboard
689. Maximum Sum of 3 Non-Overlapping Subarrays
690. Employee Importance
691. Stickers to Spell Word
692. Top K Frequent Words
693. Binary Number with Alternating Bits
694. Number of Distinct Islands
695. Max Area of Island
696. Count Binary Substrings
697. Degree of an Array
698. Partition to K Equal Sum Subsets
699. Falling Squares
700. Search in a Binary Search Tree
701. Insert into a Binary Search Tree
702. Search in a Sorted Array of Unknown Size
703. Kth Largest Element in a Stream
704. Binary Search
705. Design HashSet
706. Design HashMap
707. Design Linked List
708. Insert into a Sorted Circular Linked List
709. To Lower Case
710. Random Pick with Blacklist
711. Number of Distinct Islands II
712. Minimum ASCII Delete Sum for Two Strings
713. Subarray Product Less Than K
714. Best Time to Buy and Sell Stock with Transaction Fee
715. Range Module
716. Max Stack
717. 1-bit and 2-bit Characters
718. Maximum Length of Repeated Subarray
719. Find K-th Smallest Pair Distance
720. Longest Word in Dictionary
721. Accounts Merge
722. Remove Comments
723. Candy Crush
724. Find Pivot Index
725. Split Linked List in Parts
726. Number of Atoms
727. Minimum Window Subsequence
728. Self Dividing Numbers
729. My Calendar I
730. Count Different Palindromic Subsequences
731. My Calendar II
732. My Calendar III
733. Flood Fill
734. Sentence Similarity
735. Asteroid Collision
736. Parse Lisp Expression
737. Sentence Similarity II
738. Monotone Increasing Digits
739. Daily Temperatures
740. Delete and Earn
741. Cherry Pickup
742. Closest Leaf in a Binary Tree
743. Network Delay Time
744. Find Smallest Letter Greater Than Target
745. Prefix and Suffix Search
746. Min Cost Climbing Stairs
747. Largest Number At Least Twice of Others
748. Shortest Completing Word
749. Contain Virus
750. Number Of Corner Rectangles
751. IP to CIDR
752. Open the Lock
753. Cracking the Safe
754. Reach a Number
755. Pour Water
756. Pyramid Transition Matrix
757. Set Intersection Size At Least Two
758. Bold Words in String
759. Employee Free Time
760. Find Anagram Mappings
761. Special Binary String
762. Prime Number of Set Bits in Binary Representation
763. Partition Labels
764. Largest Plus Sign
765. Couples Holding Hands
766. Toeplitz Matrix
767. Reorganize String
768. Max Chunks To Make Sorted II
769. Max Chunks To Make Sorted
770. Basic Calculator IV
771. Jewels and Stones
772. Basic Calculator III
773. Sliding Puzzle
774. Minimize Max Distance to Gas Station
775. Global and Local Inversions
776. Split BST
777. Swap Adjacent in LR String
778. Swim in Rising Water
779. K-th Symbol in Grammar
780. Reaching Points
781. Rabbits in Forest
782. Transform to Chessboard
783. Minimum Distance Between BST Nodes
784. Letter Case Permutation
785. Is Graph Bipartite?
786. K-th Smallest Prime Fraction
787. Cheapest Flights Within K Stops
788. Rotated Digits
789. Escape The Ghosts
790. Domino and Tromino Tiling
791. Custom Sort String
792. Number of Matching Subsequences
793. Preimage Size of Factorial Zeroes Function
794. Valid Tic-Tac-Toe State
795. Number of Subarrays with Bounded Maximum
796. Rotate String
797. All Paths From Source to Target
798. Smallest Rotation with Highest Score
799. Champagne Tower
800. Similar RGB Color
801. Minimum Swaps To Make Sequences Increasing
802. Find Eventual Safe States
803. Bricks Falling When Hit
804. Unique Morse Code Words
805. Split Array With Same Average
806. Number of Lines To Write String
807. Max Increase to Keep City Skyline
808. Soup Servings
809. Expressive Words
810. Chalkboard XOR Game
811. Subdomain Visit Count
812. Largest Triangle Area
813. Largest Sum of Averages
814. Binary Tree Pruning
815. Bus Routes
816. Ambiguous Coordinates
817. Linked List Components
818. Race Car
819. Most Common Word
820. Short Encoding of Words
821. Shortest Distance to a Character
822. Card Flipping Game
823. Binary Trees With Factors
824. Goat Latin
825. Friends Of Appropriate Ages
826. Most Profit Assigning Work
827. Making A Large Island
828. Count Unique Characters of All Substrings of a Given String
829. Consecutive Numbers Sum
830. Positions of Large Groups
831. Masking Personal Information
832. Flipping an Image
833. Find And Replace in String
834. Sum of Distances in Tree
835. Image Overlap
836. Rectangle Overlap
837. New 21 Game
838. Push Dominoes
839. Similar String Groups
840. Magic Squares In Grid
841. Keys and Rooms
842. Split Array into Fibonacci Sequence
843. Guess the Word
844. Backspace String Compare
845. Longest Mountain in Array
846. Hand of Straights
847. Shortest Path Visiting All Nodes
848. Shifting Letters
849. Maximize Distance to Closest Person
850. Rectangle Area II
851. Loud and Rich
852. Peak Index in a Mountain Array
853. Car Fleet
854. K-Similar Strings
855. Exam Room
856. Score of Parentheses
857. Minimum Cost to Hire K Workers
858. Mirror Reflection
859. Buddy Strings
860. Lemonade Change
861. Score After Flipping Matrix
862. Shortest Subarray with Sum at Least K
863. All Nodes Distance K in Binary Tree
864. Shortest Path to Get All Keys
865. Smallest Subtree with all the Deepest Nodes
866. Prime Palindrome
867. Transpose Matrix
868. Binary Gap
869. Reordered Power of 2
870. Advantage Shuffle
871. Minimum Number of Refueling Stops
872. Leaf-Similar Trees
873. Length of Longest Fibonacci Subsequence
874. Walking Robot Simulation
875. Koko Eating Bananas
876. Middle of the Linked List
877. Stone Game
878. Nth Magical Number
879. Profitable Schemes
880. Decoded String at Index
881. Boats to Save People
882. Reachable Nodes In Subdivided Graph
883. Projection Area of 3D Shapes
884. Uncommon Words from Two Sentences
885. Spiral Matrix III
886. Possible Bipartition
887. Super Egg Drop
888. Fair Candy Swap
889. Construct Binary Tree from Preorder and Postorder Traversal
890. Find and Replace Pattern
891. Sum of Subsequence Widths
892. Surface Area of 3D Shapes
893. Groups of Special-Equivalent Strings
894. All Possible Full Binary Trees
895. Maximum Frequency Stack
896. Monotonic Array
897. Increasing Order Search Tree
898. Bitwise ORs of Subarrays
899. Orderly Queue
900. RLE Iterator
901. Online Stock Span
902. Numbers At Most N Given Digit Set
903. Valid Permutations for DI Sequence
904. Fruit Into Baskets
905. Sort Array By Parity
906. Super Palindromes
907. Sum of Subarray Minimums
908. Smallest Range I
909. Snakes and Ladders
910. Smallest Range II
911. Online Election
912. Sort an Array
913. Cat and Mouse
914. X of a Kind in a Deck of Cards
915. Partition Array into Disjoint Intervals
916. Word Subsets
917. Reverse Only Letters
918. Maximum Sum Circular Subarray
919. Complete Binary Tree Inserter
920. Number of Music Playlists
921. Minimum Add to Make Parentheses Valid
922. Sort Array By Parity II
923. 3Sum With Multiplicity
924. Minimize Malware Spread
925. Long Pressed Name
926. Flip String to Monotone Increasing
927. Three Equal Parts
928. Minimize Malware Spread II
929. Unique Email Addresses
930. Binary Subarrays With Sum
931. Minimum Falling Path Sum
932. Beautiful Array
933. Number of Recent Calls
934. Shortest Bridge
935. Knight Dialer
936. Stamping The Sequence
937. Reorder Data in Log Files
938. Range Sum of BST
939. Minimum Area Rectangle
940. Distinct Subsequences II
941. Valid Mountain Array
942. DI String Match
943. Find the Shortest Superstring
944. Delete Columns to Make Sorted
945. Minimum Increment to Make Array Unique
946. Validate Stack Sequences
947. Most Stones Removed with Same Row or Column
948. Bag of Tokens
949. Largest Time for Given Digits
950. Reveal Cards In Increasing Order
951. Flip Equivalent Binary Trees
952. Largest Component Size by Common Factor
953. Verifying an Alien Dictionary
954. Array of Doubled Pairs
955. Delete Columns to Make Sorted II
956. Tallest Billboard
957. Prison Cells After N Days
958. Check Completeness of a Binary Tree
959. Regions Cut By Slashes
960. Delete Columns to Make Sorted III
961. N-Repeated Element in Size 2N Array
962. Maximum Width Ramp
963. Minimum Area Rectangle II
964. Least Operators to Express Number
965. Univalued Binary Tree
966. Vowel Spellchecker
967. Numbers With Same Consecutive Differences
968. Binary Tree Cameras
969. Pancake Sorting
970. Powerful Integers
971. Flip Binary Tree To Match Preorder Traversal
972. Equal Rational Numbers
973. K Closest Points to Origin
974. Subarray Sums Divisible by K
975. Odd Even Jump
976. Largest Perimeter Triangle
977. Squares of a Sorted Array
978. Longest Turbulent Subarray
979. Distribute Coins in Binary Tree
980. Unique Paths III
981. Time Based Key-Value Store
982. Triples with Bitwise AND Equal To Zero
983. Minimum Cost For Tickets
984. String Without AAA or BBB
985. Sum of Even Numbers After Queries
986. Interval List Intersections
987. Vertical Order Traversal of a Binary Tree
988. Smallest String Starting From Leaf
989. Add to Array-Form of Integer
990. Satisfiability of Equality Equations
991. Broken Calculator
992. Subarrays with K Different Integers
993. Cousins in Binary Tree
994. Rotting Oranges
995. Minimum Number of K Consecutive Bit Flips
996. Number of Squareful Arrays
997. Find the Town Judge
998. Maximum Binary Tree II
999. Available Captures for Rook
1000. Minimum Cost to Merge Stones
1001. Grid Illumination
1002. Find Common Characters
1003. Check If Word Is Valid After Substitutions
1004. Max Consecutive Ones III
1005. Maximize Sum Of Array After K Negations
1006. Clumsy Factorial
1007. Minimum Domino Rotations For Equal Row
1008. Construct Binary Search Tree from Preorder Traversal
1009. Complement of Base 10 Integer
1010. Pairs of Songs With Total Durations Divisible by 60
1011. Capacity To Ship Packages Within D Days
1012. Numbers With Repeated Digits
1013. Partition Array Into Three Parts With Equal Sum
1014. Best Sightseeing Pair
1015. Smallest Integer Divisible by K
1016. Binary String With Substrings Representing 1 To N
1017. Convert to Base -2
1018. Binary Prefix Divisible By 5
1019. Next Greater Node In Linked List
1020. Number of Enclaves
1021. Remove Outermost Parentheses
1022. Sum of Root To Leaf Binary Numbers
1023. Camelcase Matching
1024. Video Stitching
1025. Divisor Game
1026. Maximum Difference Between Node and Ancestor
1027. Longest Arithmetic Subsequence
1028. Recover a Tree From Preorder Traversal
1029. Two City Scheduling
1030. Matrix Cells in Distance Order
1031. Maximum Sum of Two Non-Overlapping Subarrays
1032. Stream of Characters
1033. Moving Stones Until Consecutive
1034. Coloring A Border
1035. Uncrossed Lines
1036. Escape a Large Maze
1037. Valid Boomerang
1038. Binary Search Tree to Greater Sum Tree
1039. Minimum Score Triangulation of Polygon
1040. Moving Stones Until Consecutive II
1041. Robot Bounded In Circle
1042. Flower Planting With No Adjacent
1043. Partition Array for Maximum Sum
1044. Longest Duplicate Substring
1045. Customers Who Bought All Products
1046. Last Stone Weight
1047. Remove All Adjacent Duplicates In String
1048. Longest String Chain
1049. Last Stone Weight II
1050. Actors and Directors Who Cooperated At Least Three Times
1051. Height Checker
1052. Grumpy Bookstore Owner
1053. Previous Permutation With One Swap
1054. Distant Barcodes
1055. Shortest Way to Form String
1056. Confusing Number
1057. Campus Bikes
1058. Minimize Rounding Error to Meet Target
1059. All Paths from Source Lead to Destination
1060. Missing Element in Sorted Array
1061. Lexicographically Smallest Equivalent String
1062. Longest Repeating Substring
1063. Number of Valid Subarrays
1064. Fixed Point
1065. Index Pairs of a String
1066. Campus Bikes II
1067. Digit Count in Range
1068. Product Sales Analysis I
1069. Product Sales Analysis II
1070. Product Sales Analysis III
1071. Greatest Common Divisor of Strings
1072. Flip Columns For Maximum Number of Equal Rows
1073. Adding Two Negabinary Numbers
1074. Number of Submatrices That Sum to Target
1075. Project Employees I
1076. Project Employees II
1077. Project Employees III
1078. Occurrences After Bigram
1079. Letter Tile Possibilities
1080. Insufficient Nodes in Root to Leaf Paths
1081. Smallest Subsequence of Distinct Characters
1082. Sales Analysis I
1083. Sales Analysis II
1084. Sales Analysis III
1085. Sum of Digits in the Minimum Number
1086. High Five
1087. Brace Expansion
1088. Confusing Number II
1089. Duplicate Zeros
1090. Largest Values From Labels
1091. Shortest Path in Binary Matrix
1092. Shortest Common Supersequence
1093. Statistics from a Large Sample
1094. Car Pooling
1095. Find in Mountain Array
1096. Brace Expansion II
1097. Game Play Analysis V
1098. Unpopular Books
1099. Two Sum Less Than K
1100. Find K-Length Substrings With No Repeated Characters
1101. The Earliest Moment When Everyone Become Friends
1102. Path With Maximum Minimum Value
1103. Distribute Candies to People
1104. Path In Zigzag Labelled Binary Tree
1105. Filling Bookcase Shelves
1106. Parsing A Boolean Expression
1107. New Users Daily Count
1108. Defanging an IP Address
1109. Corporate Flight Bookings
1110. Delete Nodes And Return Forest
1111. Maximum Nesting Depth of Two Valid Parentheses Strings
1112. Highest Grade For Each Student
1113. Reported Posts
1114. Print in Order
1115. Print FooBar Alternately
1116. Print Zero Even Odd
1117. Building H2O
1118. Number of Days in a Month
1119. Remove Vowels from a String
1120. Maximum Average Subtree
1121. Divide Array Into Increasing Sequences
1122. Relative Sort Array
1123. Lowest Common Ancestor of Deepest Leaves
1124. Longest Well-Performing Interval
1125. Smallest Sufficient Team
1126. Active Businesses
1127. User Purchase Platform
1128. Number of Equivalent Domino Pairs
1129. Shortest Path with Alternating Colors
1130. Minimum Cost Tree From Leaf Values
1131. Maximum of Absolute Value Expression
1132. Reported Posts II
1133. Largest Unique Number
1134. Armstrong Number
1135. Connecting Cities With Minimum Cost
1136. Parallel Courses
1137. N-th Tribonacci Number
1138. Alphabet Board Path
1139. Largest 1-Bordered Square
1140. Stone Game II
1141. User Activity for the Past 30 Days I
1142. User Activity for the Past 30 Days II
1143. Longest Common Subsequence
1144. Decrease Elements To Make Array Zigzag
1145. Binary Tree Coloring Game
1146. Snapshot Array
1147. Longest Chunked Palindrome Decomposition
1148. Article Views I
1149. Article Views II
1150. Check If a Number Is Majority Element in a Sorted Array
1151. Minimum Swaps to Group All 1's Together
1152. Analyze User Website Visit Pattern
1153. String Transforms Into Another String
1154. Day of the Year
1155. Number of Dice Rolls With Target Sum
1156. Swap For Longest Repeated Character Substring
1157. Online Majority Element In Subarray
1158. Market Analysis I
1159. Market Analysis II
1160. Find Words That Can Be Formed by Characters
1161. Maximum Level Sum of a Binary Tree
1162. As Far from Land as Possible
1163. Last Substring in Lexicographical Order
1164. Product Price at a Given Date
1165. Single-Row Keyboard
1166. Design File System
1167. Minimum Cost to Connect Sticks
1168. Optimize Water Distribution in a Village
1169. Invalid Transactions
1170. Compare Strings by Frequency of the Smallest Character
1171. Remove Zero Sum Consecutive Nodes from Linked List
1172. Dinner Plate Stacks
1173. Immediate Food Delivery I
1174. Immediate Food Delivery II
1175. Prime Arrangements
1176. Diet Plan Performance
1177. Can Make Palindrome from Substring
1178. Number of Valid Words for Each Puzzle
1179. Reformat Department Table
1180. Count Substrings with Only One Distinct Letter
1181. Before and After Puzzle
1182. Shortest Distance to Target Color
1183. Maximum Number of Ones
1184. Distance Between Bus Stops
1185. Day of the Week
1186. Maximum Subarray Sum with One Deletion
1187. Make Array Strictly Increasing
1188. Design Bounded Blocking Queue
1189. Maximum Number of Balloons
1190. Reverse Substrings Between Each Pair of Parentheses
1191. K-Concatenation Maximum Sum
1192. Critical Connections in a Network
1193. Monthly Transactions I
1194. Tournament Winners
1195. Fizz Buzz Multithreaded
1196. How Many Apples Can You Put into the Basket
1197. Minimum Knight Moves
1198. Find Smallest Common Element in All Rows
1199. Minimum Time to Build Blocks
1200. Minimum Absolute Difference
1201. Ugly Number III
1202. Smallest String With Swaps
1203. Sort Items by Groups Respecting Dependencies
1204. Last Person to Fit in the Elevator
1205. Monthly Transactions II
1206. Design Skiplist
1207. Unique Number of Occurrences
1208. Get Equal Substrings Within Budget
1209. Remove All Adjacent Duplicates in String II
1210. Minimum Moves to Reach Target with Rotations
1211. Queries Quality and Percentage
1212. Team Scores in Football Tournament
1213. Intersection of Three Sorted Arrays
1214. Two Sum BSTs
1215. Stepping Numbers
1216. Valid Palindrome III
1217. Minimum Cost to Move Chips to The Same Position
1218. Longest Arithmetic Subsequence of Given Difference
1219. Path with Maximum Gold
1220. Count Vowels Permutation
1221. Split a String in Balanced Strings
1222. Queens That Can Attack the King
1223. Dice Roll Simulation
1224. Maximum Equal Frequency
1225. Report Contiguous Dates
1226. The Dining Philosophers
1227. Airplane Seat Assignment Probability
1228. Missing Number In Arithmetic Progression
1229. Meeting Scheduler
1230. Toss Strange Coins
1231. Divide Chocolate
1232. Check If It Is a Straight Line
1233. Remove Sub-Folders from the Filesystem
1234. Replace the Substring for Balanced String
1235. Maximum Profit in Job Scheduling
1236. Web Crawler
1237. Find Positive Integer Solution for a Given Equation
1238. Circular Permutation in Binary Representation
1239. Maximum Length of a Concatenated String with Unique Characters
1240. Tiling a Rectangle with the Fewest Squares
1241. Number of Comments per Post
1242. Web Crawler Multithreaded
1243. Array Transformation
1244. Design A Leaderboard
1245. Tree Diameter
1246. Palindrome Removal
1247. Minimum Swaps to Make Strings Equal
1248. Count Number of Nice Subarrays
1249. Minimum Remove to Make Valid Parentheses
1250. Check If It Is a Good Array
1251. Average Selling Price
1252. Cells with Odd Values in a Matrix
1253. Reconstruct a 2-Row Binary Matrix
1254. Number of Closed Islands
1255. Maximum Score Words Formed by Letters
1256. Encode Number
1257. Smallest Common Region
1258. Synonymous Sentences
1259. Handshakes That Don't Cross
1260. Shift 2D Grid
1261. Find Elements in a Contaminated Binary Tree
1262. Greatest Sum Divisible by Three
1263. Minimum Moves to Move a Box to Their Target Location
1264. Page Recommendations
1265. Print Immutable Linked List in Reverse
1266. Minimum Time Visiting All Points
1267. Count Servers that Communicate
1268. Search Suggestions System
1269. Number of Ways to Stay in the Same Place After Some Steps
1270. All People Report to the Given Manager
1271. Hexspeak
1272. Remove Interval
1273. Delete Tree Nodes
1274. Number of Ships in a Rectangle
1275. Find Winner on a Tic Tac Toe Game
1276. Number of Burgers with No Waste of Ingredients
1277. Count Square Submatrices with All Ones
1278. Palindrome Partitioning III
1279. Traffic Light Controlled Intersection
1280. Students and Examinations
1281. Subtract the Product and Sum of Digits of an Integer
1282. Group the People Given the Group Size They Belong To
1283. Find the Smallest Divisor Given a Threshold
1284. Minimum Number of Flips to Convert Binary Matrix to Zero Matrix
1285. Find the Start and End Number of Continuous Ranges
1286. Iterator for Combination
1287. Element Appearing More Than 25% In Sorted Array
1288. Remove Covered Intervals
1289. Minimum Falling Path Sum II
1290. Convert Binary Number in a Linked List to Integer
1291. Sequential Digits
1292. Maximum Side Length of a Square with Sum Less than or Equal to Threshold
1293. Shortest Path in a Grid with Obstacles Elimination
1294. Weather Type in Each Country
1295. Find Numbers with Even Number of Digits
1296. Divide Array in Sets of K Consecutive Numbers
1297. Maximum Number of Occurrences of a Substring
1298. Maximum Candies You Can Get from Boxes
1299. Replace Elements with Greatest Element on Right Side
1300. Sum of Mutated Array Closest to Target
1301. Number of Paths with Max Score
1302. Deepest Leaves Sum
1303. Find the Team Size
1304. Find N Unique Integers Sum up to Zero
1305. All Elements in Two Binary Search Trees
1306. Jump Game III
1307. Verbal Arithmetic Puzzle
1308. Running Total for Different Genders
1309. Decrypt String from Alphabet to Integer Mapping
1310. XOR Queries of a Subarray
1311. Get Watched Videos by Your Friends
1312. Minimum Insertion Steps to Make a String Palindrome
1313. Decompress Run-Length Encoded List
1314. Matrix Block Sum
1315. Sum of Nodes with Even-Valued Grandparent
1316. Distinct Echo Substrings
1317. Convert Integer to the Sum of Two No-Zero Integers
1318. Minimum Flips to Make a OR b Equal to c
1319. Number of Operations to Make Network Connected
1320. Minimum Distance to Type a Word Using Two Fingers
1321. Restaurant Growth
1322. Ads Performance
1323. Maximum 69 Number
1324. Print Words Vertically
1325. Delete Leaves With a Given Value
1326. Minimum Number of Taps to Open to Water a Garden
1327. List the Products Ordered in a Period
1328. Break a Palindrome
1329. Sort the Matrix Diagonally
1330. Reverse Subarray To Maximize Array Value
1331. Rank Transform of an Array
1332. Remove Palindromic Subsequences
1333. Filter Restaurants by Vegan-Friendly, Price and Distance
1334. Find the City With the Smallest Number of Neighbors at a Threshold Distance
1335. Minimum Difficulty of a Job Schedule
1336. Number of Transactions per Visit
1337. The K Weakest Rows in a Matrix
1338. Reduce Array Size to The Half
1339. Maximum Product of Splitted Binary Tree
1340. Jump Game V
1341. Movie Rating
1342. Number of Steps to Reduce a Number to Zero
1343. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold
1344. Angle Between Hands of a Clock
1345. Jump Game IV
1346. Check If N and Its Double Exist
1347. Minimum Number of Steps to Make Two Strings Anagram
1348. Tweet Counts Per Frequency
1349. Maximum Students Taking Exam
1350. Students With Invalid Departments
1351. Count Negative Numbers in a Sorted Matrix
1352. Product of the Last K Numbers
1353. Maximum Number of Events That Can Be Attended
1354. Construct Target Array With Multiple Sums
1355. Activity Participants
1356. Sort Integers by The Number of 1 Bits
1357. Apply Discount Every n Orders
1358. Number of Substrings Containing All Three Characters
1359. Count All Valid Pickup and Delivery Options
1360. Number of Days Between Two Dates
1361. Validate Binary Tree Nodes
1362. Closest Divisors
1363. Largest Multiple of Three
1364. Number of Trusted Contacts of a Customer
1365. How Many Numbers Are Smaller Than the Current Number
1366. Rank Teams by Votes
1367. Linked List in Binary Tree
1368. Minimum Cost to Make at Least One Valid Path in a Grid
1369. Get the Second Most Recent Activity
1370. Increasing Decreasing String
1371. Find the Longest Substring Containing Vowels in Even Counts
1372. Longest ZigZag Path in a Binary Tree
1373. Maximum Sum BST in Binary Tree
1374. Generate a String With Characters That Have Odd Counts
1375. Bulb Switcher III
1376. Time Needed to Inform All Employees
1377. Frog Position After T Seconds
1378. Replace Employee ID With The Unique Identifier
1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree
1380. Lucky Numbers in a Matrix
1381. Design a Stack With Increment Operation
1382. Balance a Binary Search Tree
1383. Maximum Performance of a Team
1384. Total Sales Amount by Year
1385. Find the Distance Value Between Two Arrays
1386. Cinema Seat Allocation
1387. Sort Integers by The Power Value
1388. Pizza With 3n Slices
1389. Create Target Array in the Given Order
1390. Four Divisors
1391. Check if There is a Valid Path in a Grid
1392. Longest Happy Prefix
1393. Capital Gain/Loss
1394. Find Lucky Integer in an Array
1395. Count Number of Teams
1396. Design Underground System
1397. Find All Good Strings
1398. Customers Who Bought Products A and B but Not C
1399. Count Largest Group
1400. Construct K Palindrome Strings
1401. Circle and Rectangle Overlapping
1402. Reducing Dishes
1403. Minimum Subsequence in Non-Increasing Order
1404. Number of Steps to Reduce a Number in Binary Representation to One
1405. Longest Happy String
1406. Stone Game III
1407. Top Travellers
1408. String Matching in an Array
1409. Queries on a Permutation With Key
1410. HTML Entity Parser
1411. Number of Ways to Paint N × 3 Grid
1412. Find the Quiet Students in All Exams
1413. Minimum Value to Get Positive Step by Step Sum
1414. Find the Minimum Number of Fibonacci Numbers Whose Sum Is K
1415. The k-th Lexicographical String of All Happy Strings of Length n
1416. Restore The Array
1417. Reformat The String
1418. Display Table of Food Orders in a Restaurant
1419. Minimum Number of Frogs Croaking
1420. Build Array Where You Can Find The Maximum Exactly K Comparisons
1421. NPV Queries
1422. Maximum Score After Splitting a String
1423. Maximum Points You Can Obtain from Cards
1424. Diagonal Traverse II
1425. Constrained Subsequence Sum
1426. Counting Elements
1427. Perform String Shifts
1428. Leftmost Column with at Least a One
1429. First Unique Number
1430. Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree
1431. Kids With the Greatest Number of Candies
1432. Max Difference You Can Get From Changing an Integer
1433. Check If a String Can Break Another String
1434. Number of Ways to Wear Different Hats to Each Other
1435. Create a Session Bar Chart
1436. Destination City
1437. Check If All 1's Are at Least Length K Places Away
1438. Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit
1439. Find the Kth Smallest Sum of a Matrix With Sorted Rows
1440. Evaluate Boolean Expression
1441. Build an Array With Stack Operations
1442. Count Triplets That Can Form Two Arrays of Equal XOR
1443. Minimum Time to Collect All Apples in a Tree
1444. Number of Ways of Cutting a Pizza
1445. Apples & Oranges
1446. Consecutive Characters
1447. Simplified Fractions
1448. Count Good Nodes in Binary Tree
1449. Form Largest Integer With Digits That Add up to Target
1450. Number of Students Doing Homework at a Given Time
1451. Rearrange Words in a Sentence
1452. People Whose List of Favorite Companies Is Not a Subset of Another List
1453. Maximum Number of Darts Inside of a Circular Dartboard
1454. Active Users
1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence
1456. Maximum Number of Vowels in a Substring of Given Length
1457. Pseudo-Palindromic Paths in a Binary Tree
1458. Max Dot Product of Two Subsequences
1459. Rectangles Area
1460. Make Two Arrays Equal by Reversing Sub-arrays
1461. Check If a String Contains All Binary Codes of Size K
1462. Course Schedule IV
1463. Cherry Pickup II
1464. Maximum Product of Two Elements in an Array
1465. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts
1466. Reorder Routes to Make All Paths Lead to the City Zero
1467. Probability of a Two Boxes Having The Same Number of Distinct Balls
1468. Calculate Salaries
1469. Find All The Lonely Nodes
1470. Shuffle the Array
1471. The k Strongest Values in an Array
1472. Design Browser History
1473. Paint House III
1474. Delete N Nodes After M Nodes of a Linked List
1475. Final Prices With a Special Discount in a Shop
1476. Subrectangle Queries
1477. Find Two Non-overlapping Sub-arrays Each With Target Sum
1478. Allocate Mailboxes
1479. Sales by Day of the Week
1480. Running Sum of 1d Array
1481. Least Number of Unique Integers after K Removals
1482. Minimum Number of Days to Make m Bouquets
1483. Kth Ancestor of a Tree Node
1484. Group Sold Products By The Date
1485. Clone Binary Tree With Random Pointer
1486. XOR Operation in an Array
1487. Making File Names Unique
1488. Avoid Flood in The City
1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree
1490. Clone N-ary Tree
1491. Average Salary Excluding the Minimum and Maximum Salary
1492. The kth Factor of n
1493. Longest Subarray of 1's After Deleting One Element
1494. Parallel Courses II
1495. Friendly Movies Streamed Last Month
1496. Path Crossing
1497. Check If Array Pairs Are Divisible by k
1498. Number of Subsequences That Satisfy the Given Sum Condition
1499. Max Value of Equation
1500. Design a File Sharing System
1501. Countries You Can Safely Invest In
1502. Can Make Arithmetic Progression From Sequence
1503. Last Moment Before All Ants Fall Out of a Plank
1504. Count Submatrices With All Ones
1505. Minimum Possible Integer After at Most K Adjacent Swaps On Digits
1506. Find Root of N-Ary Tree
1507. Reformat Date
1508. Range Sum of Sorted Subarray Sums
1509. Minimum Difference Between Largest and Smallest Value in Three Moves
1510. Stone Game IV
1511. Customer Order Frequency
1512. Number of Good Pairs
1513. Number of Substrings With Only 1s
1514. Path with Maximum Probability
1515. Best Position for a Service Centre
1516. Move Sub-Tree of N-Ary Tree
1517. Find Users With Valid E-Mails
1518. Water Bottles
1519. Number of Nodes in the Sub-Tree With the Same Label
1520. Maximum Number of Non-Overlapping Substrings
1521. Find a Value of a Mysterious Function Closest to Target
1522. Diameter of N-Ary Tree
1523. Count Odd Numbers in an Interval Range
1524. Number of Sub-arrays With Odd Sum
1525. Number of Good Ways to Split a String
1526. Minimum Number of Increments on Subarrays to Form a Target Array
1527. Patients With a Condition
1528. Shuffle String
1529. Bulb Switcher IV
1530. Number of Good Leaf Nodes Pairs
1531. String Compression II
1532. The Most Recent Three Orders
1533. Find the Index of the Large Integer
1534. Count Good Triplets
1535. Find the Winner of an Array Game
1536. Minimum Swaps to Arrange a Binary Grid
1537. Get the Maximum Score
1538. Guess the Majority in a Hidden Array
1539. Kth Missing Positive Number
1540. Can Convert String in K Moves
1541. Minimum Insertions to Balance a Parentheses String
1542. Find Longest Awesome Substring
1543. Fix Product Name Format
1544. Make The String Great
1545. Find Kth Bit in Nth Binary String
1546. Maximum Number of Non-Overlapping Subarrays With Sum Equals Target
1547. Minimum Cost to Cut a Stick
1548. The Most Similar Path in a Graph
1549. The Most Recent Orders for Each Product
1550. Three Consecutive Odds
1551. Minimum Operations to Make Array Equal
1552. Magnetic Force Between Two Balls
1553. Minimum Number of Days to Eat N Oranges
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