| 5. Longest Palindromic Substring |
Solution, Solution2 |
2023-10-28 |
| 6. Zigzag Conversion |
Solution, Solution2 |
2023-02-03 |
| 7. Reverse Integer |
Solution |
2022-09-23 |
| 11. Container With Most Water |
Solution |
2022-09-17 |
| 12. Integer to Roman |
Solution |
2022-10-16 |
| 15. 3Sum |
Solution |
2022-09-13 |
| 16. 3Sum Closest |
Solution |
2022-09-24 |
| 17. Letter Combinations of a Phone Number |
Solution |
2023-08-04 |
| 18. 4Sum |
Solution |
2022-10-19 |
| 19. Remove Nth Node From End of List |
Solution, Solution2 |
2024-03-03 |
| 24. Swap Nodes in Pairs |
Solution |
2023-05-16 |
| 28. Find the Index of the First Occurrence in a String |
Solution |
2023-03-05 |
| 31. Next Permutation |
Solution |
2022-09-24 |
| 33. Search in Rotated Sorted Array |
Solution |
2023-08-08 |
| 34. Find First and Last Position of Element in Sorted Array |
Solution |
2023-10-09 |
| 36. Valid Sudoku |
Solution |
2022-11-23 |
| 38. Count and Say |
Solution |
2022-10-18 |
| 45. Jump Game II |
Solution, Solution2 |
2023-02-08 |
| 46. Permutations |
Solution, Solution2 |
2023-08-02 |
| 47. Permutations II |
Solution |
2022-09-21 |
| 49. Group Anagrams |
Solution |
2024-02-06 |
| 50. Pow(x, n) |
Solution |
2023-07-24 |
| 54. Spiral Matrix |
Solution |
2023-05-10 |
| 55. Jump Game |
Solution, Solution2 |
2022-12-26 |
| 57. Insert Interval |
Solution |
2024-03-17 |
| 59. Spiral Matrix II |
Solution |
2023-05-10 |
| 61. Rotate List |
Solution |
2022-09-28 |
| 62. Unique Paths |
Solution |
2023-09-03 |
| 63. Unique Paths II |
Solution |
2023-08-12 |
| 64. Minimum Path Sum |
Solution |
2023-03-27 |
| 71. Simplify Path |
Solution |
2023-04-12 |
| 74. Search a 2D Matrix |
Solution |
2023-08-07 |
| 75. Sort Colors |
Solution, Solution2 |
2024-06-12 |
| 78. Subsets |
Solution, Solution2 |
2024-05-21 |
| 79. Word Search |
Solution |
2024-04-03 |
| 81. Search in Rotated Sorted Array II |
Solution |
2023-08-10 |
| 86. Partition List |
Solution |
2023-08-15 |
| 90. Subsets II |
Solution |
2022-10-10 |
| 91. Decode Ways |
Solution |
2023-12-25 |
| 92. Reverse Linked List II |
Solution, Solution2 |
2023-10-09 |
| 97. Interleaving String |
Solution |
2023-08-25 |
| 103. Binary Tree Zigzag Level Order Traversal |
Solution, Solution2 |
2023-02-19 |
| 106. Construct Binary Tree from Inorder and Postorder Traversal |
Solution |
2023-03-16 |
| 109. Convert Sorted List to Binary Search Tree |
Solution, Solution2 |
2023-03-11 |
| 113. Path Sum II |
Solution |
2022-09-24 |
| 129. Sum Root to Leaf Numbers |
Solution, Solution2 |
2024-04-15 |
| 131. Palindrome Partitioning |
Solution |
2024-05-22 |
| 133. Clone Graph |
Solution, Solution2 |
2023-04-08 |
| 134. Gas Station |
Solution |
2023-01-11 |
| 137. Single Number II |
Solution, Solution2 |
2023-07-04 |
| 138. Copy List with Random Pointer |
Solution |
2023-09-05 |
| 139. Word Break |
Solution |
2023-08-04 |
| 142. Linked List Cycle II |
Solution, Solution2 |
2023-03-09 |
| 143. Reorder List |
Solution |
2024-04-23 |
| 148. Sort List |
Solution, Solution2 |
2022-10-01 |
| 150. Evaluate Reverse Polish Notation |
Solution |
2024-01-30 |
| 151. Reverse Words in a String |
Solution |
2022-11-14 |
| 162. Find Peak Element |
Solution |
2022-10-13 |
| 165. Compare Version Numbers |
Solution |
2024-05-03 |
| 167. Two Sum II - Input Array Is Sorted |
Solution |
2022-10-13 |
| 179. Largest Number |
Solution |
2024-09-18 |
| 189. Rotate Array |
Solution, Solution2 |
2022-09-25 |
| 198. House Robber |
Solution |
2022-12-14 |
| 200. Number of Islands |
Solution |
2024-04-19 |
| 201. Bitwise AND of Numbers Range |
Solution |
2024-02-21 |
| 207. Course Schedule |
Solution |
2023-07-14 |
| 208. Implement Trie (Prefix Tree) |
Solution |
2023-03-17 |
| 209. Minimum Size Subarray Sum |
Solution |
2023-07-06 |
| 210. Course Schedule II |
Solution |
2022-09-19 |
| 211. Design Add and Search Words Data Structure |
Solution |
2023-03-19 |
| 215. Kth Largest Element in an Array |
Solution |
2023-08-14 |
| 221. Maximal Square |
Solution |
2022-10-18 |
| 222. Count Complete Tree Nodes |
Solution |
2022-11-15 |
| 223. Rectangle Area |
Solution |
2022-11-18 |
| 229. Majority Element II |
Solution |
2022-10-10 |
| 230. Kth Smallest Element in a BST |
Solution |
2022-09-26 |
| 237. Delete Node in a Linked List |
Solution |
2022-10-13 |
| 238. Product of Array Except Self |
Solution |
2024-03-15 |
| 241. Different Ways to Add Parentheses |
Solution |
2024-09-21 |
| 260. Single Number III |
Solution |
2024-05-31 |
| 264. Ugly Number II |
Solution, Solution2 |
2024-08-19 |
| 279. Perfect Squares |
Solution, Solution2 |
2024-02-08 |
| 287. Find the Duplicate Number |
Solution, Solution2 |
2024-03-24 |
| 300. Longest Increasing Subsequence |
Solution |
2024-01-05 |
| 319. Bulb Switcher |
Solution |
2023-04-27 |
| 328. Odd Even Linked List |
Solution |
2022-12-06 |
| 334. Increasing Triplet Subsequence |
Solution |
2022-10-11 |
| 341. Flatten Nested List Iterator |
Solution |
2023-10-21 |
| 343. Integer Break |
Solution |
2023-10-06 |
| 347. Top K Frequent Elements |
Solution |
2023-05-22 |
| 368. Largest Divisible Subset |
Solution |
2024-02-09 |
| 373. Find K Pairs with Smallest Sums |
Solution |
2023-06-27 |
| 380. Insert Delete GetRandom O(1) |
Solution, Solution2 |
2024-01-16 |
| 382. Linked List Random Node |
Solution |
2023-03-10 |
| 386. Lexicographical Numbers |
Solution |
2024-09-21 |
| 393. UTF-8 Validation |
Solution |
2022-09-13 |
| 399. Evaluate Division |
Solution |
2023-12-22 |
| 402. Remove K Digits |
Solution |
2024-04-11 |
| 427. Construct Quad Tree |
Solution |
2023-02-27 |
| 433. Minimum Genetic Mutation |
Solution |
2022-11-03 |
| 435. Non-overlapping Intervals |
Solution, Solution2 |
2023-12-24 |
| 438. Find All Anagrams in a String |
Solution |
2023-02-05 |
| 442. Find All Duplicates in an Array |
Solution |
2024-03-25 |
| 443. String Compression |
Solution |
2023-03-02 |
| 445. Add Two Numbers II |
Solution |
2023-07-18 |
| 451. Sort Characters By Frequency |
Solution |
2024-02-07 |
| 452. Minimum Number of Arrows to Burst Balloons |
Solution, Solution2 |
2024-03-18 |
| 486. Predict the Winner |
Solution |
2023-07-29 |
| 494. Target Sum |
Solution, Solution2 |
2024-12-26 |
| 513. Find Bottom Left Tree Value |
Solution |
2024-03-02 |
| 515. Find Largest Value in Each Tree Row |
Solution |
2023-10-24 |
| 516. Longest Palindromic Subsequence |
Solution |
2023-04-14 |
| 518. Coin Change II |
Solution |
2023-08-11 |
| 523. Continuous Subarray Sum |
Solution |
2024-06-08 |
| 525. Contiguous Array |
Solution |
2024-03-16 |
| 539. Minimum Time Difference |
Solution |
2024-09-16 |
| 540. Single Element in a Sorted Array |
Solution, Solution2 |
2023-02-21 |
| 542. 01 Matrix |
Solution |
2023-08-17 |
| 547. Number of Provinces |
Solution |
2023-06-04 |
| 567. Permutation in String |
Solution |
2024-10-05 |
| 592. Fraction Addition and Subtraction |
Solution |
2024-08-23 |
| 609. Find Duplicate File in System |
Solution |
2022-09-19 |
| 622. Design Circular Queue |
Solution |
2022-09-25 |
| 623. Add One Row to Tree |
Solution, Solution2 |
2024-04-16 |
| 624. Maximum Distance in Arrays |
Solution, Solution2 |
2024-08-17 |
| 633. Sum of Square Numbers |
Solution |
2024-06-17 |
| 636. Exclusive Time of Functions |
Solution |
2022-10-06 |
| 640. Solve the Equation |
Solution |
2022-10-07 |
| 641. Design Circular Deque |
Solution |
2024-09-28 |
| 646. Maximum Length of Pair Chain |
Solution |
2023-08-26 |
| 647. Palindromic Substrings |
Solution, Solution2 |
2024-02-10 |
| 648. Replace Words |
Solution, Solution2 |
2024-06-08 |
| 652. Find Duplicate Subtrees |
Solution |
2023-02-28 |
| 655. Print Binary Tree |
Solution |
2022-10-11 |
| 658. Find K Closest Elements |
Solution |
2022-09-29 |
| 662. Maximum Width of Binary Tree |
Solution |
2023-04-20 |
| 670. Maximum Swap |
Solution |
2024-10-17 |
| 673. Number of Longest Increasing Subsequence |
Solution |
2023-12-31 |
| 684. Redundant Connection |
Solution |
2025-01-29 |
| 688. Knight Probability in Chessboard |
Solution |
2023-07-22 |
| 692. Top K Frequent Words |
Solution |
2022-10-19 |
| 712. Minimum ASCII Delete Sum for Two Strings |
Solution |
2023-08-01 |
| 713. Subarray Product Less Than K |
Solution |
2024-03-27 |
| 718. Maximum Length of Repeated Subarray |
Solution |
2022-09-20 |
| 725. Split Linked List in Parts |
Solution |
2024-09-08 |
| 729. My Calendar I |
Solution |
2024-09-26 |
| 731. My Calendar II |
Solution |
2024-09-28 |
| 735. Asteroid Collision |
Solution |
2023-12-23 |
| 739. Daily Temperatures |
Solution |
2024-02-01 |
| 752. Open the Lock |
Solution |
2024-04-22 |
| 769. Max Chunks To Make Sorted |
Solution |
2024-12-19 |
| 779. K-th Symbol in Grammar |
Solution |
2023-10-25 |
| 785. Is Graph Bipartite? |
Solution |
2023-05-19 |
| 786. K-th Smallest Prime Fraction |
Solution, Solution2 |
2024-05-11 |
| 787. Cheapest Flights Within K Stops |
Solution |
2024-02-24 |
| 790. Domino and Tromino Tiling |
Solution |
2022-12-28 |
| 791. Custom Sort String |
Solution |
2024-03-11 |
| 797. All Paths From Source to Target |
Solution |
2023-01-02 |
| 799. Champagne Tower |
Solution |
2023-09-24 |
| 802. Find Eventual Safe States |
Solution, Solution2 |
2025-01-24 |
| 808. Soup Servings |
Solution |
2023-07-30 |
| 835. Image Overlap |
Solution |
2022-10-28 |
| 838. Push Dominoes |
Solution |
2022-09-27 |
| 840. Magic Squares In Grid |
Solution |
2024-08-09 |
| 841. Keys and Rooms |
Solution |
2022-12-22 |
| 848. Shifting Letters |
Solution |
2022-09-27 |
| 852. Peak Index in a Mountain Array |
Solution |
2023-07-25 |
| 861. Score After Flipping Matrix |
Solution |
2024-05-13 |
| 863. All Nodes Distance K in Binary Tree |
Solution |
2023-07-11 |
| 873. Length of Longest Fibonacci Subsequence |
Solution |
2025-02-27 |
| 874. Walking Robot Simulation |
Solution |
2024-09-04 |
| 875. Koko Eating Bananas |
Solution |
2023-03-08 |
| 880. Decoded String at Index |
Solution |
2023-09-27 |
| 881. Boats to Save People |
Solution |
2024-05-04 |
| 885. Spiral Matrix III |
Solution |
2024-08-08 |
| 886. Possible Bipartition |
Solution |
2022-12-22 |
| 889. Construct Binary Tree from Preorder and Postorder Traversal |
Solution, Solution2 |
2025-02-23 |
| 901. Online Stock Span |
Solution |
2022-11-10 |
| 904. Fruit Into Baskets |
Solution |
2023-02-07 |
| 907. Sum of Subarray Minimums |
Solution |
2022-12-01 |
| 912. Sort an Array |
Solution |
2023-03-01 |
| 916. Word Subsets |
Solution |
2025-01-10 |
| 921. Minimum Add to Make Parentheses Valid |
Solution |
2024-10-09 |
| 926. Flip String to Monotone Increasing |
Solution |
2023-01-17 |
| 931. Minimum Falling Path Sum |
Solution |
2024-01-19 |
| 934. Shortest Bridge |
Solution |
2023-05-23 |
| 946. Validate Stack Sequences |
Solution |
2023-04-13 |
| 947. Most Stones Removed with Same Row or Column |
Solution, Solution2 |
2024-08-29 |
| 948. Bag of Tokens |
Solution |
2024-03-04 |
| 950. Reveal Cards In Increasing Order |
Solution |
2024-04-10 |
| 951. Flip Equivalent Binary Trees |
Solution |
2024-10-24 |
| 962. Maximum Width Ramp |
Solution |
2024-10-10 |
| 974. Subarray Sums Divisible by K |
Solution |
2024-06-09 |
| 979. Distribute Coins in Binary Tree |
Solution |
2024-05-18 |
| 981. Time Based Key-Value Store |
Solution |
2022-10-06 |
| 983. Minimum Cost For Tickets |
Solution |
2024-12-31 |
| 985. Sum of Even Numbers After Queries |
Solution |
2022-09-21 |
| 990. Satisfiability of Equality Equations |
Solution |
2022-09-27 |
| 1011. Capacity To Ship Packages Within D Days |
Solution |
2023-02-22 |
| 1014. Best Sightseeing Pair |
Solution |
2024-12-27 |
| 1020. Number of Enclaves |
Solution |
2023-04-08 |
| 1026. Maximum Difference Between Node and Ancestor |
Solution |
2024-01-11 |
| 1027. Longest Arithmetic Subsequence |
Solution |
2023-06-24 |
| 1038. Binary Search Tree to Greater Sum Tree |
Solution |
2024-06-26 |
| 1043. Partition Array for Maximum Sum |
Solution |
2024-02-03 |
| 1052. Grumpy Bookstore Owner |
Solution |
2024-06-21 |
| 1061. Lexicographically Smallest Equivalent String |
Solution |
2023-01-14 |
| 1072. Flip Columns For Maximum Number of Equal Rows |
Solution |
2024-11-22 |
| 1079. Letter Tile Possibilities |
Solution, Solution2 |
2025-02-18 |
| 1105. Filling Bookcase Shelves |
Solution |
2024-07-31 |
| 1110. Delete Nodes And Return Forest |
Solution, Solution2 |
2024-07-17 |
| 1129. Shortest Path with Alternating Colors |
Solution |
2023-02-11 |
| 1140. Stone Game II |
Solution |
2024-08-20 |
| 1143. Longest Common Subsequence |
Solution |
2024-01-26 |
| 1146. Snapshot Array |
Solution |
2023-06-11 |
| 1155. Number of Dice Rolls With Target Sum |
Solution |
2023-12-26 |
| 1161. Maximum Level Sum of a Binary Tree |
Solution |
2023-06-15 |
| 1162. As Far from Land as Possible |
Solution |
2023-02-10 |
| 1171. Remove Zero Sum Consecutive Nodes from Linked List |
Solution |
2024-03-12 |
| 1190. Reverse Substrings Between Each Pair of Parentheses |
Solution |
2024-09-28 |
| 1201. Ugly Number III |
Solution |
2022-09-13 |
| 1208. Get Equal Substrings Within Budget |
Solution |
2024-05-28 |
| 1218. Longest Arithmetic Subsequence of Given Difference |
Solution |
2023-07-14 |
| 1219. Path with Maximum Gold |
Solution |
2024-05-14 |
| 1233. Remove Sub-Folders from the Filesystem |
Solution |
2024-10-25 |
| 1234. Replace the Substring for Balanced String |
Solution |
2022-09-20 |
| 1239. Maximum Length of a Concatenated String with Unique Characters |
Solution |
2022-10-28 |
| 1248. Count Number of Nice Subarrays |
Solution, Solution2 |
2024-06-22 |
| 1254. Number of Closed Islands |
Solution |
2023-04-07 |
| 1261. Find Elements in a Contaminated Binary Tree |
Solution |
2025-02-21 |
| 1267. Count Servers that Communicate |
Solution, Solution2 |
2025-01-23 |
| 1277. Count Square Submatrices with All Ones |
Solution |
2024-10-27 |
| 1282. Group the People Given the Group Size They Belong To |
Solution |
2023-09-11 |
| 1291. Sequential Digits |
Solution |
2024-02-02 |
| 1296. Divide Array in Sets of K Consecutive Numbers |
Solution, Solution2 |
2022-10-05 |
| 1310. XOR Queries of a Subarray |
Solution |
2024-09-13 |
| 1318. Minimum Flips to Make a OR b Equal to c |
Solution |
2023-06-07 |
| 1319. Number of Operations to Make Network Connected |
Solution, Solution2 |
2023-03-25 |
| 1325. Delete Leaves With a Given Value |
Solution |
2024-05-17 |
| 1328. Break a Palindrome |
Solution |
2022-10-10 |
| 1334. Find the City With the Smallest Number of Neighbors at a Threshold Distance |
Solution |
2024-07-26 |
| 1339. Maximum Product of Splitted Binary Tree |
Solution |
2022-12-10 |
| 1347. Minimum Number of Steps to Make Two Strings Anagram |
Solution |
2024-01-13 |
| 1352. Product of the Last K Numbers |
Solution |
2025-02-15 |
| 1358. Number of Substrings Containing All Three Characters |
Solution |
2025-03-11 |
| 1361. Validate Binary Tree Nodes |
Solution |
2023-10-17 |
| 1367. Linked List in Binary Tree |
Solution |
2024-09-07 |
| 1371. Find the Longest Substring Containing Vowels in Even Counts |
Solution |
2024-09-15 |
| 1372. Longest ZigZag Path in a Binary Tree |
Solution |
2023-04-24 |
| 1376. Time Needed to Inform All Employees |
Solution |
2023-06-03 |
| 1381. Design a Stack With Increment Operation |
Solution |
2024-09-30 |
| 1382. Balance a Binary Search Tree |
Solution |
2024-06-26 |
| 1395. Count Number of Teams |
Solution, Solution2 |
2024-07-29 |
| 1396. Design Underground System |
Solution |
2023-06-02 |
| 1400. Construct K Palindrome Strings |
Solution |
2025-01-11 |
| 1401. Circle and Rectangle Overlapping |
Solution |
2022-10-04 |
| 1404. Number of Steps to Reduce a Number in Binary Representation to One |
Solution |
2024-05-29 |
| 1405. Longest Happy String |
Solution |
2024-10-16 |
| 1415. The k-th Lexicographical String of All Happy Strings of Length n |
Solution |
2025-02-19 |
| 1424. Diagonal Traverse II |
Solution |
2023-11-22 |
| 1442. Count Triplets That Can Form Two Arrays of Equal XOR |
Solution |
2024-05-30 |
| 1456. Maximum Number of Vowels in a Substring of Given Length |
Solution |
2023-05-05 |
| 1457. Pseudo-Palindromic Paths in a Binary Tree |
Solution |
2024-01-24 |
| 1462. Course Schedule IV |
Solution |
2025-01-27 |
| 1466. Reorder Routes to Make All Paths Lead to the City Zero |
Solution |
2023-03-24 |
| 1472. Design Browser History |
Solution, Solution2 |
2023-03-18 |
| 1482. Minimum Number of Days to Make m Bouquets |
Solution, Solution2 |
2024-06-19 |
| 1493. Longest Subarray of 1's After Deleting One Element |
Solution |
2023-07-05 |
| 1497. Check If Array Pairs Are Divisible by k |
Solution, Solution2 |
2024-10-01 |
| 1498. Number of Subsequences That Satisfy the Given Sum Condition |
Solution |
2023-05-06 |
| 1503. Last Moment Before All Ants Fall Out of a Plank |
Solution |
2023-11-04 |
| 1509. Minimum Difference Between Largest and Smallest Value in Three Moves |
Solution |
2024-07-03 |
| 1514. Path with Maximum Probability |
Solution |
2024-08-31 |
| 1524. Number of Sub-arrays With Odd Sum |
Solution |
2025-02-25 |
| 1545. Find Kth Bit in Nth Binary String |
Solution, Solution2 |
2024-10-19 |
| 1552. Magnetic Force Between Two Balls |
Solution |
2024-06-20 |
| 1557. Minimum Number of Vertices to Reach All Nodes |
Solution |
2023-05-18 |
| 1561. Maximum Number of Coins You Can Get |
Solution |
2023-11-24 |
| 1574. Shortest Subarray to be Removed to Make Array Sorted |
Solution |
2024-11-15 |
| 1578. Minimum Time to Make Rope Colorful |
Solution |
2023-12-27 |
| 1590. Make Sum Divisible by P |
Solution |
2024-10-03 |
| 1593. Split a String Into the Max Number of Unique Substrings |
Solution |
2024-10-21 |
| 1605. Find Valid Matrix Given Row and Column Sums |
Solution |
2024-07-20 |
| 1609. Even Odd Tree |
Solution |
2024-02-29 |
| 1615. Maximal Network Rank |
Solution |
2023-08-18 |
| 1626. Best Team With No Conflicts |
Solution |
2023-01-31 |
| 1637. Widest Vertical Area Between Two Points Containing No Points |
Solution |
2023-12-21 |
| 1653. Minimum Deletions to Make String Balanced |
Solution, Solution2 |
2024-07-30 |
| 1657. Determine if Two Strings Are Close |
Solution |
2024-01-14 |
| 1669. Merge In Between Linked Lists |
Solution |
2024-03-20 |
| 1680. Concatenation of Consecutive Binary Numbers |
Solution, Solution2 |
2022-09-25 |
| 1685. Sum of Absolute Differences in a Sorted Array |
Solution |
2023-11-25 |
| 1696. Jump Game VI |
Solution |
2022-09-21 |
| 1706. Where Will the Ball Fall |
Solution |
2022-11-01 |
| 1718. Construct the Lexicographically Largest Valid Sequence |
Solution |
2025-02-16 |
| 1721. Swapping Nodes in a Linked List |
Solution |
2023-05-15 |
| 1726. Tuple with Same Product |
Solution |
2025-02-06 |
| 1749. Maximum Absolute Sum of Any Subarray |
Solution |
2025-02-26 |
| 1750. Minimum Length of String After Deleting Similar Ends |
Solution |
2024-03-05 |
| 1759. Count Number of Homogenous Substrings |
Solution |
2023-11-09 |
| 1760. Minimum Limit of Balls in a Bag |
Solution |
2024-12-07 |
| 1765. Map of Highest Peak |
Solution |
2025-01-22 |
| 1769. Minimum Number of Operations to Move All Balls to Each Box |
Solution |
2025-01-06 |
| 1770. Maximum Score from Performing Multiplication Operations |
Solution |
2022-09-16 |
| 1780. Check if Number is a Sum of Powers of Three |
Solution |
2025-03-04 |
| 1792. Maximum Average Pass Ratio |
Solution |
2024-12-15 |
| 1802. Maximum Value at a Given Index in a Bounded Array |
Solution |
2023-06-11 |
| 1813. Sentence Similarity III |
Solution, Solution2 |
2024-10-07 |
| 1814. Count Nice Pairs in an Array |
Solution |
2023-11-21 |
| 1823. Find the Winner of the Circular Game |
Solution, Solution2 |
2024-07-08 |
| 1829. Maximum XOR for Each Query |
Solution |
2024-11-08 |
| 1833. Maximum Ice Cream Bars |
Solution |
2023-01-06 |
| 1834. Single-Threaded CPU |
Solution |
2023-01-02 |
| 1838. Frequency of the Most Frequent Element |
Solution |
2024-12-06 |
| 1861. Rotating the Box |
Solution |
2024-11-23 |
| 1870. Minimum Speed to Arrive on Time |
Solution |
2023-07-26 |
| 1894. Find the Student that Will Replace the Chalk |
Solution |
2024-09-02 |
| 1905. Count Sub Islands |
Solution |
2024-08-28 |
| 1910. Remove All Occurrences of a Substring |
Solution |
2025-02-11 |
| 1915. Number of Wonderful Substrings |
Solution |
2024-04-30 |
| 1926. Nearest Exit from Entrance in Maze |
Solution |
2022-11-21 |
| 1930. Unique Length-3 Palindromic Subsequences |
Solution |
2025-01-04 |
| 1937. Maximum Number of Points with Cost |
Solution |
2024-08-18 |
| 1942. The Number of the Smallest Unoccupied Chair |
Solution |
2024-10-11 |
| 1962. Remove Stones to Minimize the Total |
Solution |
2022-12-28 |
| 1963. Minimum Number of Swaps to Make the String Balanced |
Solution |
2024-10-08 |
| 1975. Maximum Matrix Sum |
Solution |
2024-11-24 |
| 1976. Number of Ways to Arrive at Destination |
Solution |
2025-03-23 |
| 1980. Find Unique Binary String |
Solution, Solution2 |
2025-02-20 |
| 1992. Find All Groups of Farmland |
Solution |
2024-04-20 |
| 1996. The Number of Weak Characters in the Game |
Solution |
2022-09-09 |
| 2007. Find Original Array From Doubled Array |
Solution, Solution2 |
2022-09-15 |
| 2017. Grid Game |
Solution |
2025-01-21 |
| 2024. Maximize the Confusion of an Exam |
Solution |
2023-07-07 |
| 2028. Find Missing Observations |
Solution |
2024-09-05 |
| 2038. Remove Colored Pieces if Both Neighbors are the Same Color |
Solution |
2023-10-02 |
| 2044. Count Number of Maximum Bitwise-OR Subsets |
Solution |
2024-10-18 |
| 2054. Two Best Non-Overlapping Events |
Solution |
2024-12-08 |
| 2064. Minimized Maximum of Products Distributed to Any Store |
Solution, Solution2 |
2024-11-14 |
| 2070. Most Beautiful Item for Each Query |
Solution |
2024-11-12 |
| 2090. K Radius Subarray Averages |
Solution |
2023-06-20 |
| 2095. Delete the Middle Node of a Linked List |
Solution |
2022-10-14 |
| 2096. Step-By-Step Directions From a Binary Tree Node to Another |
Solution |
2024-07-16 |
| 2101. Detonate the Maximum Bombs |
Solution |
2023-06-02 |
| 2109. Adding Spaces to a String |
Solution |
2024-12-03 |
| 2115. Find All Possible Recipes from Given Supplies |
Solution |
2025-03-21 |
| 2116. Check if a Parentheses String Can Be Valid |
Solution |
2025-01-12 |
| 2125. Number of Laser Beams in a Bank |
Solution |
2024-01-03 |
| 2130. Maximum Twin Sum of a Linked List |
Solution |
2023-05-17 |
| 2131. Longest Palindrome by Concatenating Two Letter Words |
Solution |
2022-11-04 |
| 2134. Minimum Swaps to Group All 1's Together II |
Solution |
2024-08-02 |
| 2149. Rearrange Array Elements by Sign |
Solution |
2024-02-14 |
| 2161. Partition Array According to Given Pivot |
Solution |
2025-03-03 |
| 2181. Merge Nodes in Between Zeros |
Solution |
2024-07-04 |
| 2182. Construct String With Repeat Limit |
Solution |
2024-12-17 |
| 2187. Minimum Time to Complete Trips |
Solution |
2023-03-07 |
| 2191. Sort the Jumbled Numbers |
Solution |
2024-07-24 |
| 2192. All Ancestors of a Node in a Directed Acyclic Graph |
Solution, Solution2 |
2024-06-30 |
| 2196. Create Binary Tree From Descriptions |
Solution |
2024-07-15 |
| 2225. Find Players With Zero or One Losses |
Solution |
2024-01-15 |
| 2226. Maximum Candies Allocated to K Children |
Solution |
2025-03-14 |
| 2244. Minimum Rounds to Complete All Tasks |
Solution |
2023-01-04 |
| 2256. Minimum Average Difference |
Solution |
2022-12-04 |
| 2257. Count Unguarded Cells in the Grid |
Solution |
2024-11-21 |
| 2270. Number of Ways to Split Array |
Solution |
2025-01-03 |
| 2275. Largest Combination With Bitwise AND Greater Than Zero |
Solution |
2024-11-07 |
| 2279. Maximum Bags With Full Capacity of Rocks |
Solution |
2022-12-27 |
| 2285. Maximum Total Importance of Roads |
Solution |
2024-06-28 |
| 2300. Successful Pairs of Spells and Potions |
Solution |
2023-04-02 |
| 2305. Fair Distribution of Cookies |
Solution |
2023-07-02 |
| 2316. Count Unreachable Pairs of Nodes in an Undirected Graph |
Solution, Solution2 |
2023-03-25 |
| 2326. Spiral Matrix IV |
Solution |
2024-09-09 |
| 2336. Smallest Number in Infinite Set |
Solution |
2023-04-26 |
| 2337. Move Pieces to Obtain a String |
Solution |
2024-12-05 |
| 2342. Max Sum of a Pair With Equal Sum of Digits |
Solution |
2025-02-12 |
| 2348. Number of Zero-Filled Subarrays |
Solution, Solution2 |
2023-03-21 |
| 2349. Design a Number Container System |
Solution |
2025-02-08 |
| 2352. Equal Row and Column Pairs |
Solution |
2023-06-13 |
| 2353. Design a Food Rating System |
Solution |
2023-12-17 |
| 2364. Count Number of Bad Pairs |
Solution |
2025-02-09 |
| 2369. Check if There is a Valid Partition For The Array |
Solution |
2023-08-13 |
| 2375. Construct Smallest Number From DI String |
Solution |
2025-02-18 |
| 2381. Shifting Letters II |
Solution |
2025-01-05 |
| 2390. Removing Stars From a String |
Solution |
2023-04-11 |
| 2391. Minimum Amount of Time to Collect Garbage |
Solution |
2023-11-20 |
| 2401. Longest Nice Subarray |
Solution |
2025-03-18 |
| 2405. Optimal Partition of String |
Solution |
2023-04-04 |
| 2415. Reverse Odd Levels of Binary Tree |
Solution, Solution2 |
2024-12-20 |
| 2425. Bitwise XOR of All Pairings |
Solution |
2025-01-16 |
| 2429. Minimize XOR |
Solution |
2025-01-15 |
| 2433. Find The Original Array of Prefix Xor |
Solution |
2023-10-31 |
| 2439. Minimize Maximum of Array |
Solution |
2023-04-06 |
| 2461. Maximum Sum of Distinct Subarrays With Length K |
Solution |
2024-11-19 |
| 2466. Count Ways To Build Good Strings |
Solution |
2024-12-30 |
| 2467. Most Profitable Path in a Tree |
Solution |
2025-02-24 |
| 2471. Minimum Number of Operations to Sort a Binary Tree by Level |
Solution |
2024-12-23 |
| 2477. Minimum Fuel Cost to Report to the Capital |
Solution |
2023-02-12 |
| 2482. Difference Between Ones and Zeros in Row and Column |
Solution |
2023-12-14 |
| 2483. Minimum Penalty for a Shop |
Solution, Solution2 |
2023-08-29 |
| 2486. Append Characters to String to Make Subsequence |
Solution |
2024-06-03 |
| 2487. Remove Nodes From Linked List |
Solution, Solution2 |
2024-05-07 |
| 2491. Divide Players Into Teams of Equal Skill |
Solution |
2024-10-04 |
| 2492. Minimum Score of a Path Between Two Cities |
Solution, Solution2 |
2023-03-22 |
| 2501. Longest Square Streak in an Array |
Solution |
2024-10-28 |
| 2516. Take K of Each Character From Left and Right |
Solution, Solution2 |
2024-11-20 |
| 2523. Closest Prime Numbers in Range |
Solution |
2025-03-07 |
| 2530. Maximal Score After Applying K Operations |
Solution |
2024-10-14 |
| 2554. Maximum Number of Integers to Choose From a Range I |
Solution |
2024-12-06 |
| 2558. Take Gifts From the Richest Pile |
Solution |
2024-12-12 |
| 2559. Count Vowel Strings in Ranges |
Solution |
2025-01-02 |
| 2560. House Robber IV |
Solution |
2025-03-15 |
| 2563. Count the Number of Fair Pairs |
Solution |
2024-11-13 |
| 2579. Count Total Number of Colored Cells |
Solution |
2025-03-05 |
| 2583. Kth Largest Sum in a Binary Tree |
Solution |
2024-10-24 |
| 2593. Find Score of an Array After Marking All Elements |
Solution |
2024-12-13 |
| 2594. Minimum Time to Repair Cars |
Solution |
2025-03-16 |
| 2601. Prime Subtraction Operation |
Solution |
2024-11-11 |
| 2610. Convert an Array Into a 2D Array With Conditions |
Solution |
2024-01-02 |
| 2616. Minimize the Maximum Difference of Pairs |
Solution |
2023-08-09 |
| 2641. Cousins in Binary Tree II |
Solution |
2024-10-23 |
| 2657. Find the Prefix Common Array of Two Arrays |
Solution |
2025-01-14 |
| 2658. Maximum Number of Fish in a Grid |
Solution |
2025-01-28 |
| 2661. First Completely Painted Row or Column |
Solution, Solution2 |
2025-01-20 |
| 2683. Neighboring Bitwise XOR |
Solution |
2025-01-17 |
| 2684. Maximum Number of Moves in a Grid |
Solution |
2024-10-30 |
| 2685. Count the Number of Complete Components |
Solution |
2025-03-22 |
| 2698. Find the Punishment Number of an Integer |
Solution |
2025-02-15 |
| 2707. Extra Characters in a String |
Solution |
2024-09-23 |
| 2762. Continuous Subarrays |
Solution, Solution2 |
2024-12-14 |
| 2779. Maximum Beauty of an Array After Applying Operation |
Solution |
2024-12-11 |
| 2785. Sort Vowels in a String |
Solution |
2023-11-13 |
| 2807. Insert Greatest Common Divisors in Linked List |
Solution |
2024-09-10 |
| 2816. Double a Number Represented as a Linked List |
Solution |
2024-05-07 |
| 2825. Make String a Subsequence Using Cyclic Increments |
Solution |
2024-12-04 |
| 2849. Determine if a Cell Is Reachable at a Given Time |
Solution |
2023-11-08 |
| 2870. Minimum Number of Operations to Make Array Empty |
Solution |
2024-01-04 |
| 2914. Minimum Number of Changes to Make Binary String Beautiful |
Solution |
2024-11-05 |
| 2924. Find Champion II |
Solution, Solution2 |
2024-11-26 |
| 2938. Separate Black and White Balls |
Solution |
2024-10-15 |
| 2948. Make Lexicographically Smallest Array by Swapping Elements |
Solution |
2025-01-25 |
| 2958. Length of Longest Subarray With at Most K Frequency |
Solution |
2024-03-28 |
| 2962. Count Subarrays Where Max Element Appears at Least K Times |
Solution |
2024-03-29 |
| 2966. Divide Array Into Arrays With Max Difference |
Solution |
2024-02-01 |
| 2971. Find Polygon With the Largest Perimeter |
Solution |
2024-02-15 |
| 2976. Minimum Cost to Convert String I |
Solution |
2024-07-27 |
| 2981. Find Longest Special Substring That Occurs Thrice I |
Solution |
2024-12-10 |
| 2997. Minimum Number of Operations to Make Array XOR Equal to K |
Solution |
2024-04-29 |
| 3011. Find if Array Can Be Sorted |
Solution |
2024-11-06 |
| 3016. Minimum Number of Pushes to Type Word II |
Solution |
2024-08-06 |
| 3043. Find the Length of the Longest Common Prefix |
Solution |
2024-09-24 |
| 3066. Minimum Operations to Exceed Threshold Value II |
Solution, Solution2 |
2025-02-13 |
| 3075. Maximize Happiness of Selected Children |
Solution |
2024-05-09 |
| 3097. Shortest Subarray With OR at Least K II |
Solution |
2024-11-10 |
| 3133. Minimum Array End |
Solution |
2024-11-09 |
| 3152. Special Array II |
Solution |
2024-12-09 |
| 3160. Find the Number of Distinct Colors Among the Balls |
Solution |
2025-02-07 |
| 3163. String Compression III |
Solution |
2024-11-04 |
| 3169. Count Days Without Meetings |
Solution |
2025-03-24 |
| 3191. Minimum Operations to Make Binary Array Elements Equal to One I |
Solution |
2025-03-19 |
| 3208. Alternating Groups II |
Solution |
2025-03-09 |
| 3217. Delete Nodes From Linked List Present in Array |
Solution |
2024-09-06 |
| 3223. Minimum Length of String After Operations |
Solution |
2025-01-13 |
| 3243. Shortest Distance After Road Addition Queries I |
Solution |
2024-11-27 |
| 3254. Find the Power of K-Size Subarrays I |
Solution |
2024-11-16 |
| 3306. Count of Substrings Containing Every Vowel and K Consonants II |
Solution |
2025-03-10 |
| 3356. Zero Array Transformation II |
Solution |
2025-03-13 |
| 3394. Check if Grid can be Cut into Sections |
Solution |
2025-03-25 |