Learn a new algorithm every day!
1-100
- No. 1. Two Sum (Easy)
- No. 2. Add Two Numbers (Medium)
- No. 3. Longest Substring Without Repeating Characters (Medium)
- No. 4. Median of Two Sorted Arrays (Hard)
- No. 5. Longest Palindromic Substring (Medium)
- No. 6. Zigzag Conversion (Medium)
- No. 7. Reverse Integer (Medium)
- No. 8. String to Integer (atoi) (Medium)
- No. 10. Regular Expression Matching (Hard)
- No. 11. Container With Most Water (Medium)
- No. 12. Integer to Roman (Medium)
- No. 13. Roman to Integer (Easy)
- No. 14. Longest Common Prefix (Eash)
- No. 15. 3Sum (Medium)
- No. 16. 3Sum Closest (Medium)
- No. 17. Letter Combinations of a Phone Number (Medium)
- No. 18. 4Sum (Medium)
- No. 19. Remove Nth Node From End of List (Medium)
- No. 20. Valid Parentheses (Easy)
- No. 21. Merge Two Sorted Lists (Easy)
- No. 22. Generate Parentheses (Medium)
- No. 23. Merge k Sorted Lists (Hard)
- No. 24. Swap Nodes in Pairs (Medium)
- No. 25. Reverse Nodes in k-Group (Hard)
- No. 26. Remove Duplicates from Sorted Array (Easy)
- No. 27. Remove Element (Easy)
- No. 29. Divide Two Integers (Medium)
- No. 30. Substring with Concatenation of All Words (Hard)
- No. 31. Next Permutation (Medium)
- No. 32. Longest Valid Parentheses (Medium)
- No. 33. Search in Rotated Sorted Array (Medium)
- No. 34. Find First and Last Position of Element in Sorted Array (Medium)
- No. 35. Search Insert Position (Easy)
- No. 36. Valid Sudoku (Medium)
- No. 37. Sudoku Solver (Hard)
- No. 38. Count and Say (Medium)
- No. 39. Combination Sum (Medium)
- No. 40. Combination Sum II (Medium)
- No. 41. First Missing Positive (Hard)
- No. 42. Trapping Rain Water (Hard)
- No. 43. Multiply Strings (Medium)
- No. 45. Jump Game II (Medium)
- No. 46. Permutations (Medium)
- No. 47. Permutations II (Medium)
- No. 48. Rotate Image (Medium)
- No. 49. Group Anagrams (Medium)
- No. 51. N-Queens (Hard)
- No. 52. N-Queens II (Hard)
- No. 53. Maximum Subarray (Medium)
- No. 55. Jump Game (Medium)
- No. 56. Merge Intervals (Medium)
- No. 57. Insert Interval (Medium)
- No. 59. Spiral Matrix II (Medium)
- No. 61. Rotate List (Medium)
- No. 62. Unique Paths (Medium)
- No. 63. Unique Paths II (Medium)
- No. 67. Add Binary (Easy)
- No. 70. Climbing Stairs (Easy)
- No. 71. Simplify Path (Medium)
- No. 74. Search a 2D Matrix (Medium)
- No. 76. Minimum Window Substring (Hard)
- No. 78. Subsets (Medium)
- No. 79. Word Search (Medium)
- No. 80. Remove Duplicates from Sorted Array II (Medium)
- No. 81. Search in Rotated Sorted Array II (Medium)
- No. 82. Remove Duplicates from Sorted List II (Medium)
- No. 83. Remove Duplicates from Sorted List (Easy)
- No. 84. Largest Rectangle in Histogram (Hard)
- No. 86. Partition List (Medium)
- No. 88. Merge Sorted Array (Easy)
- No. 91. Decode Ways (Medium)
- No. 92. Reverse Linked List II (Medium)
- No. 93. Restore IP Addresses (Medium)
- No. 94. Binary Tree Inorder Traversal (Easy)
- No. 97. Interleaving String (Medium)
- No. 98. Validate Binary Search Tree (Medium)
- No. 99. Recover Binary Search Tree (Medium)
- No. 100. Same Tree (Easy)
101-200
- No. 101. Symmetric Tree (Easy)
- No. 102. Binary Tree Level Order Traversal (Medium)
- No. 104. Maximum Depth of Binary Tree (Easy)
- No. 105. Construct Binary Tree from Preorder and Inorder Traversal (Medium)
- No. 106. Construct Binary Tree from Inorder and Postorder Traversal (Medium)
- No. 108. Convert Sorted Array to Binary Search Tree (Easy)
- No. 109. Convert Sorted List to Binary Search Tree (Medium)
- No. 112. Path Sum (Easy)
- No. 113. Path Sum II (Medium)
- No. 114. Flatten Binary Tree to Linked List (Medium)
- No. 116. Populating Next Right Pointers in Each Node (Medium)
- No. 117. Populating Next Right Pointers in Each Node II (Medium)
- No. 118. Pascal's Triangle (Easy)
- No. 120. Triangle (Medium)
- No. 121. Best Time to Buy and Sell Stock (Easy)
- No. 124. Binary Tree Maximum Path Sum (Hard)
- No. 126. Word Ladder II (Hard)
- No. 127. Word Ladder (Hard)
- No. 128. Longest Consecutive Sequence (Medium)
- No. 129. Sum Root to Leaf Numbers (Medium)
- No. 131. Palindrome Partitioning (Medium)
- No. 133. Clone Graph (Medium)
- No. 134. Gas Station (Medium)
- No. 135. Candy (Hard)
- No. 136. Single Number (Easy)
- No. 138. Copy List with Random Pointer (Medium)
- No. 141. Linked List Cycle (Easy)
- No. 142. Linked List Cycle II (Medium)
- No. 143. Reorder List (Medium)
- No. 144. Binary Tree Preorder Traversal (Easy)
- No. 145. Binary Tree Postorder Traversal (Easy)
- No. 147. Insertion Sort List (Medium)
- No. 148. Sort List (Medium)
- No. 149. Max Points on a Line (Hard)
- No. 150. Evaluate Reverse Polish Notation (Medium)
- No. 151. Reverse Words in a String (Medium)
- No. 160. Intersection of Two Linked Lists (Easy)
- No. 165. Compare Version Numbers (Medium)
- No. 167. Two Sum II - Input Array Is Sorted (Medium)
- No. 169. Majority Element (Easy)
- No. 171. Excel Sheet Column Number (Easy)
- No. 173. Binary Search Tree Iterator (Medium)
- No. 188. Best Time to Buy and Sell Stock IV (Hard)
- No. 189. Rotate Array (Medium)
- No. 191. Number of 1 Bits (Easy)
- No. 198. House Robber (Medium)
- No. 199. Binary Tree Right Side View (Medium)
- No. 200. Number of Islands (Medium)
201-300
- No. 202. Happy Number (Easy)
- No. 203. Remove Linked List Elements (Easy)
- No. 204. Count Primes (Medium)
- No. 206. Reverse Linked List (Easy)
- No. 210. Course Schedule II (Medium)
- No. 211. Design Add and Search Words Data Structure (Medium)
- No. 212. Word Search II (Hard)
- No. 215. Kth Largest Element in an Array (Medium)
- No. 216. Combination Sum III (Medium)
- No. 217. Contains Duplicate (Easy)
- No. 218. The Skyline Problem (Hard)
- No. 219. Contains Duplicate II (Easy)
- No. 221. Maximal Square (Medium)
- No. 222. Count Complete Tree Nodes (Medium)
- No. 223. Rectangle Area (Medium)
- No. 224. Basic Calculator (Hard)
- No. 225. Implement Stack using Queues (Easy)
- No. 226. Invert Binary Tree (Easy)
- No. 227. Basic Calculator II (Medium)
- No. 228. Summary Ranges (Easy)
- No. 230. Kth Smallest Element in a BST (Medium)
- No. 231. Power of Two (Easy)
- No. 232. Implement Queue using Stacks (Easy)
- No. 234. Palindrome Linked List (Easy)
- No. 235. Lowest Common Ancestor of a Binary Search Tree (Easy)
- No. 236. Lowest Common Ancestor of a Binary Tree (Medium)
- No. 237. Delete Node in a Linked List (Medium)
- No. 240. Search a 2D Matrix II (Medium)
- No. 242. Valid Anagram (Easy)
- No. 258. Add Digits (Easy)
- No. 260. Single Number III (Medium)
- No. 263. Ugly Number (Easy)
- No. 268. Missing Number (Easy)
- No. 274. H-Index (Medium)
- No. 275. H-Index II (Medium)
- No. 279. Perfect Squares (Medium)
- No. 284. Peeking Iterator (Medium)
- No. 287. Find the Duplicate Number (Medium)
- No. 289. Game of Life (Medium)
- No. 290. Word Pattern (Easy)
- No. 295. Find Median from Data Stream (Hard)
- No. 300. Longest Increasing Subsequence (Medium)
301-400
- No. 304. Range Sum Query 2D - Immutable (Medium)
- No. 307. Range Sum Query - Mutable (Medium)
- No. 309. Best Time to Buy and Sell Stock with Cooldown (Medium)
- No. 310. Minimum Height Trees (Medium)
- No. 312. Burst Balloons (Hard)
- No. 315. Count of Smaller Numbers After Self (Hard)
- No. 316. Remove Duplicate Letters (Medium)
- No. 318. Maximum Product of Word Lengths (Medium)
- No. 322. Coin Change (Medium)
- No. 326. Power of Three (Easy)
- No. 328. Odd Even Linked List (Medium)
- No. 329. Longest Increasing Path in a Matrix (Hard)
- No. 334. Increasing Triplet Subsequence (Medium)
- No. 336. Palindrome Pairs (Hard)
- No. 338. Counting Bits (Easy)
- No. 341. Flatten Nested List Iterator (Medium)
- No. 342. Power of Four (Easy)
- No. 344. Reverse String (Easy)
- No. 345. Reverse Vowels of a String (Easy)
- No. 347. Top K Frequent Elements (Medium)
- No. 350. Intersection of Two Arrays II (Easy)
- No. 352. Data Stream as Disjoint Intervals (Hard)
- No. 354. Russian Doll Envelopes (Hard)
- No. 363. Max Sum of Rectangle No Larger Than K (Hard)
- No. 374. Guess Number Higher or Lower (Easy)
- No. 376. Wiggle Subsequence (Medium)
- No. 377. Combination Sum IV (Medium)
- No. 378. Kth Smallest Element in a Sorted Matrix (Medium)
- No. 380. Insert Delete GetRandom O(1) (Meidum)
- No. 382. Linked List Random Node (Medium)
- No. 383. Ransom Note (Easy)
- No. 387. First Unique Character in a String (Easy)
- No. 389. Find the Difference (Easy)
- No. 392. Is Subsequence (Easy)
- No. 393. UTF-8 Validation (Medium)
- No. 394. Decode String (Medium)
- No. 399. Evaluate Division (Medium)
401-500
- No. 402. Remove K Digits (Medium)
- No. 406. Queue Reconstruction by Height (Medium)
- No. 410. Split Array Largest Sum (Hard)
- No. 413. Arithmetic Slices (Medium)
- No. 414. Third Maximum Number (Easy)
- No. 416. Partition Equal Subset Sum (Medium)
- No. 417. Pacific Atlantic Water Flow (Medium)
- No. 421. Maximum XOR of Two Numbers in an Array (Medium)
- No. 429. N-ary Tree Level Order Traversal (Medium)
- No. 433. Minimum Genetic Mutation (Medium)
- No. 438. Find All Anagrams in a String (Medium)
- No. 446. Arithmetic Slices II - Subsequence (Hard)
- No. 452. Minimum Number of Arrows to Burst Balloons (Medium)
- No. 454. 4Sum II (Medium)
- No. 456. 132 Pattern (Medium)
- No. 458. Poor Pigs (Hard)
- No. 460. LFU Cache (Hard)
- No. 462. Minimum Moves to Equal Array Elements II (Medium)
- No. 473. Matchsticks to Square (Medium)
- No. 474. Ones and Zeroes (Medium)
- No. 476. Number Complement (Easy)
- No. 491. Non-decreasing Subsequences (Medium)
501-600
- No. 509. Fibonacci Number (Easy)
- No. 520. Detect Capital (Easy)
- No. 523. Continuous Subarray Sum (Medium)
- No. 525. Contiguous Array (Medium)
- No. 532. K-diff Pairs in an Array (Medium)
- No. 535. Encode and Decode TinyURL (Medium)
- No. 538. Convert BST to Greater Tree (Medium)
- No. 557. Reverse Words in a String III (Easy)
- No. 560. Subarray Sum Equals K (Medium)
- No. 563. Binary Tree Tilt (Easy)
- No. 566. Reshape the Matrix (Easy)
- No. 567. Permutation in String (Medium)
- No. 576. Out of Boundary Paths (Medium)
- No. 581. Shortest Unsorted Continuous Subarray (Medium)
- No. 583. Delete Operation for Two Strings (Medium)
- No. 587. Erect the Fence (Hard)
601-700
- No. 605. Can Place Flowers (Easy)
- No. 606. Construct String from Binary Tree (Easy)
- No. 609. Find Duplicate File in System (Medium)
- No. 622. Design Circular Queue (Medium)
- No. 623. Add One Row to Tree (Medium)
- No. 629. K Inverse Pairs Array (Hard)
- No. 630. Course Schedule III (Hard)
- No. 637. Average of Levels in Binary Tree (Easy)
- No. 645. Set Mismatch (Easy)
- No. 647. Palindromic Substrings (Medium)
- No. 653. Two Sum IV - Input is a BST (Easy)
- No. 658. Find K Closest Elements (Medium)
- No. 659. Split Array into Consecutive Subsequences (Medium)
- No. 662. Maximum Width of Binary Tree (Medium)
- No. 665. Non-decreasing Array (Medium)
- No. 669. Trim a Binary Search Tree (Medium)
- No. 680. Valid Palindrome II (Easy)
- No. 682. Baseball Game (Easy)
- No. 692. Top K Frequent Words (Medium)
- No. 695. Max Area of Island (Medium)
- No. 700. Search in a Binary Search Tree (Easy)
701-800
- No. 701. Insert into a Binary Search Tree (Medium)
- No. 703. Kth Largest Element in a Stream (Easy)
- No. 704. Binary Search (Easy)
- No. 705. Design HashSet (Easy)
- No. 706. Design HashMap (Easy)
- No. 718. Maximum Length of Repeated Subarray (Medium)
- No. 729. My Calendar I (Medium)
- No. 732. My Calendar III (Hard)
- No. 739. Daily Temperatures (Medium)
- No. 740. Delete and Earn (Medium)
- No. 743. Network Delay Time (Medium)
- No. 745. Prefix and Suffix Search (Hard)
- No. 746. Min Cost Climbing Stairs (Easy)
- No. 763. Partition Labels (Medium)
- No. 766. Toeplitz Matrix (Easy)
- No. 783. Minimum Distance Between BST Nodes (Easy)
- No. 785. Is Graph Bipartite? (Medium)
- No. 790. Domino and Tromino Tiling (Medium)
- No. 792. Number of Matching Subsequences (Medium)
- No. 797. All Paths From Source to Target (Medium)
- No. 799. Champagne Tower (Medium)
801-900
- No. 804. Unique Morse Code Words (Easy)
- No. 814. Binary Tree Pruning (Medium)
- No. 820. Short Encoding of Words (Medium)
- No. 823. Binary Trees With Factors (Medium)
- No. 834. Sum of Distances in Tree (Hard)
- No. 835. Image Overlap (Medium)
- No. 838. Push Dominoes (Medium)
- No. 841. Keys and Rooms (Medium)
- No. 844. Backspace String Compare (Easy)
- No. 847. Shortest Path Visiting All Nodes (Hard)
- No. 849. Maximize Distance to Closest Person (Medium)
- No. 856. Score of Parentheses (Medium)
- No. 858. Mirror Reflection (Medium)
- No. 867. Transpose Matrix (Easy)
- No. 869. Reordered Power of 2 (Medium)
- No. 871. Minimum Number of Refueling Stops (Hard)
- No. 872. Leaf-Similar Trees (Easy)
- No. 875. Koko Eating Bananas (Medium)
- No. 876. Middle of the Linked List (Easy)
- No. 878. Nth Magical Number (Hard)
- No. 881. Boats to Save People (Medium)
- No. 886. Possible Bipartition (Medium)
- No. 890. Find and Replace Pattern (Medium)
- No. 895. Maximum Frequency Stack (Hard)
- No. 897. Increasing Order Search Tree (Easy)
- No. 899. Orderly Queue (Hard)
901-1000
- No. 901. Online Stock Span (Medium)
- No. 902. Numbers At Most N Given Digit Set (Hard)
- No. 904. Fruit Into Baskets (Medium)
- No. 905. Sort Array By Parity (Easy)
- No. 907. Sum of Subarray Minimums (Medium)
- No. 912. Sort an Array (Medium)
- No. 916. Word Subsets (Medium)
- No. 918. Maximum Sum Circular Subarray (Medium)
- No. 923. 3Sum With Multiplicity (Medium)
- No. 926. Flip String to Monotone Increasing (Medium)
- No. 931. Minimum Falling Path Sum (Medium)
- No. 936. Stamping The Sequence (Hard)
- No. 938. Range Sum of BST (Easy)
- No. 941. Valid Mountain Array (Easy)
- No. 944. Delete Columns to Make Sorted (Easy)
- No. 946. Validate Stack Sequences (Medium)
- No. 948. Bag of Tokens (Medium)
- No. 953. Verifying an Alien Dictionary (Easy)
- No. 958. Check Completeness of a Binary Tree (Medium)
- No. 967. Numbers With Same Consecutive Differences (Medium)
- No. 968. Binary Tree Cameras (Hard)
- No. 973. K Closest Points to Origin (Medium)
- No. 974. Subarray Sums Divisible by K (Medium)
- No. 976. Largest Perimeter Triangle (Easy)
- No. 980. Unique Paths III (Hard)
- No. 981. Time Based Key-Value Store (Medium)
- No. 985. Sum of Even Numbers After Queries (Medium)
- No. 987. Vertical Order Traversal of a Binary Tree (Hard)
- No. 990. Satisfiability of Equality Equations (Medium)
- No. 991. Broken Calculator (Medium)
- No. 997. Find the Town Judge (Easy)
1001-1100
- No. 1007. Minimum Domino Rotations For Equal Row (Medium)
- No. 1009. Complement of Base 10 Integer (Easy)
- No. 1010. Pairs of Songs With Total Durations Divisible by 60 (Medium)
- No. 1011. Capacity To Ship Packages Within D Days (Medium)
- No. 1015. Smallest Integer Divisible by K (Medium)
- No. 1022. Sum of Root To Leaf Binary Numbers (Easy)
- No. 1026. Maximum Difference Between Node and Ancestor (Medium)
- No. 1029. Two City Scheduling (Medium)
- No. 1041. Robot Bounded In Circle (Medium)
- No. 1046. Last Stone Weight (Easy)
- No. 1047. Remove All Adjacent Duplicates In String (Easy)
- No. 1048. Longest String Chain (Medium)
- No. 1061. Lexicographically Smallest Equivalent String (Medium)
- No. 1071. Greatest Common Divisor of Strings (Easy)
- No. 1074. Number of Submatrices That Sum to Target (Hard)
- No. 1090. Convert Binary Number in a Linked List to Integer (Easy)
- No. 1091. Shortest Path in Binary Matrix (Medium)
- No. 1094. Car Pooling (Medium)
1101-1200
- No. 1137. N-th Tribonacci Number (Easy)
- No. 1143. Longest Common Subsequence (Medium)
- No. 1155. Number of Dice Rolls With Target Sum (Medium)
- No. 1162. As Far from Land as Possible (Medium)
- No. 1192. Critical Connections in a Network (Hard)
- No. 1200. Minimum Absolute Difference (Easy)
1201-1300
- No. 1202. Smallest String With Swaps (Medium)
- No. 1209. Remove All Adjacent Duplicates in String II (Medium)
- No. 1220. Count Vowels Permutation (Hard)
- No. 1235. Maximum Profit in Job Scheduling (Hard)
- No. 1239. Maximum Length of a Concatenated String with Unique Characters (Medium)
- No. 1249. Minimum Remove to Make Valid Parentheses (Medium)
- No. 1254. Number of Closed Islands (Medium)
- No. 1260. Shift 2D Grid (Easy)
- No. 1268. Search Suggestions System (Medium)
- No. 1207. Unique Number of Occurrences (Easy)
- No. 1288. Remove Covered Intervals (Medium)
- No. 1291. Sequential Digits (Medium)
- No. 1293. Shortest Path in a Grid with Obstacles Elimination (Hard)
1301-1400
- No. 1302. Deepest Leaves Sum (Medium)
- No. 1305. All Elements in Two Binary Search Trees (Medium)
- No. 1306. Jump Game III (Medium)
- No. 1319. Number of Operations to Make Network Connected (Medium)
- No. 1323. Maximum 69 Number (Easy)
- No. 1328. Break a Palindrome (Medium)
- No. 1329. Sort the Matrix Diagonally (Medium)
- No. 1332. Remove Palindromic Subsequences (Easy) No. 1335. Minimum Difficulty of a Job Schedule (Hard)
- No. 1337. The K Weakest Rows in a Matrix (Easy)
- No. 1338. Reduce Array Size to The Half (Medium)
- No. 1339. Maximum Product of Splitted Binary Tree (Medium)
- No. 1342. Number of Steps to Reduce a Number to Zero (Easy)
- No. 1345. Jump Game IV (Hard)
- No. 1354. Construct Target Array With Multiple Sums (Hard)
- No. 1359. Count All Valid Pickup and Delivery Options (Hard)
- No. 1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree (Medium)
- No. 1383. Maximum Performance of a Team (Hard)
- No. 1396. Design Underground System (Medium)
1401-1500
- No. 1423. Maximum Points You Can Obtain from Cards (Medium)
- No. 1443. Minimum Time to Collect All Apples in a Tree (Medium)
- No. 1444. Number of Ways of Cutting a Pizza (Hard)
- No. 1446. Consecutive Characters (Easy)
- No. 1448. Count Good Nodes in Binary Tree (Medium)
- No. 1457. Pseudo-Palindromic Paths in a Binary Tree (Medium)
- No. 1461. Check If a String Contains All Binary Codes of Size K (Medium)
- No. 1463. Cherry Pickup II (Hard)
- No. 1465. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts (Medium)
- No. 1466. Reorder Routes to Make All Paths Lead to the City Zero (Medium)
- No. 1470. Shuffle the Array (Easy)
- No. 1473. Paint House III (Hard)
- No. 1480. Running Sum of 1d Array (Easy)
1501-1600
- No. 1510. Stone Game IV (Hard)
- No. 1519. Number of Nodes in the Sub-Tree With the Same Label (Medium)
- No. 1531. String Compression II (Hard)
- No. 1539. Kth Missing Positive Number (Easy)
- No. 1544. Make The String Great (Easy)
- No. 1578. Minimum Time to Make Rope Colorful (Medium)
- No. 1584. Min Cost to Connect All Points (Medium)
1601-1700
- No. 1626. Best Team With No Conflicts (Medium)
- No. 1631. Path With Minimum Effort (Medium)
- No. 1641. Count Sorted Vowel Strings (Medium)
- No. 1642. Furthest Building You Can Reach (Medium)
- No. 1647. Minimum Deletions to Make Character Frequencies Unique (Medium)
- No. 1657. Determine if Two Strings Are Close (Medium)
- No. 1658. Minimum Operations to Reduce X to Zero (Medium)
- No. 1662. Check If Two String Arrays are Equivalent (Easy)
- No. 1663. Smallest String With A Given Numeric Value (Medium)
- No. 1672. Richest Customer Wealth (Easy)
- No. 1675. Minimize Deviation in Array (Hard)
- No. 1679. Max Number of K-Sum Pairs (Medium)
- No. 1680. Concatenation of Consecutive Binary Numbers (Medium)
- No. 1689. Partitioning Into Minimum Number Of Deci-Binary Numbers (Medium)
- No. 1695. Maximum Erasure Value (Medium)
- No. 1696. Jump Game VI (Medium)
1701-1800
- No. 1704. Determine if String Halves Are Alike (Easy)
- No. 1706. Where Will the Ball Fall (Medium)
- No. 1710. Maximum Units on a Truck (Easy)
- No. 1721. Swapping Nodes in a Linked List (Medium)
- No. 1770. Maximum Score from Performing Multiplication Operations (Medium)
1801-1900
- No. 1832. Check if the Sentence Is Pangram (Easy)
- No. 1833. Maximum Ice Cream Bars (Medium)
- No. 1834. Single-Threaded CPU (Medium)
- No. 1838. Frequency of the Most Frequent Element (Medium)
- No. 1877. Minimize Maximum Pair Sum in Array (Medium)
1901-2000
- No. 1926. Nearest Exit from Entrance in Maze (Medium)
- No. 1962. Remove Stones to Minimize the Total (Medium)
- No. 1971. Find if Path Exists in Graph (Easy)
- No. 1980. Find Unique Binary String (Medium)
- No. 1996. The Number of Weak Characters in the Game (Medium)
2001-2100
- No. 2007. Find Original Array From Doubled Array (Medium)
- No. 2095. Delete the Middle Node of a Linked List (Medium)
2101-2200
- No. 2103. Rings and Rods (Easy)
- No. 2131. Longest Palindrome by Concatenating Two Letter Words (Medium)
- No. 2136. Earliest Possible Day of Full Bloom (Hard)
2201-2300
- No. 2216. Minimum Deletions to Make Array Beautiful (Medium)
- No. 2225. Find Players With Zero or One Losses (Medium)
- No. 2244. Minimum Rounds to Complete All Tasks (Medium)
- No. 2246. Longest Path With Different Adjacent Characters (Hard)
- No. 2256. Minimum Average Difference (Medium)
- No. 2279. Maximum Bags With Full Capacity of Rocks (Medium)
- No. 2300. Successful Pairs of Spells and Potions (Medium)
2301-2400
- No. 2306. Naming a Company (Hard)
- No. 2316. Count Unreachable Pairs of Nodes in an Undirected Graph (Medium)
- No. 2348. Number of Zero-Filled Subarrays (Medium)
- No. 2389. Longest Subsequence With Limited Sum (Easy)
2401-2500
- No. 2421. Number of Good Paths (Hard)
- No. 2433. Find The Original Array of Prefix Xor (Medium)
- No. 2477. Minimum Fuel Cost to Report to the Capital (Medium)
2501-2600
- No. 2530. Maximal Score After Applying K Operations (Medium)
- No. 2558. Take Gifts From the Richest Pile (Easy)
- No. 2586. Count the Number of Vowel Strings in Range (Easy)
2601-2700
- No. 2609. Find the Longest Balanced Substring of a Binary String (Easy)
- No. 2652. Sum Multiples (Easy)
- No. 2656. Maximum Sum With Exactly K Elements (Easy)