Leetcode solutions for 🚀 NeetCode.io
This repo hosts the solutions found on NeetCode.io including the solutions shown on the NeetCode YouTube channel. The site will periodically be updated with new solutions from this repo!
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- Python
- C++
- Java
- Javascript
Solutions are also welcome for any other supported language on leetcode.com!
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
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| 125 - Valid Palindrome | ❌ |
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| 680 - Valid Palindrome II | ❌ |
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| 1984 - Minimum Difference Between Highest And Lowest of K Scores | ❌ |
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| 344 - Reverse String | ❌ |
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| 88 - Merge Sorted Array | ❌ |
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| 283 - Move Zeroes | ❌ |
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| 26 - Remove Duplicates From Sorted Array | ❌ |
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| 167 - Two Sum II Input Array Is Sorted | ❌ |
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| 15 - 3Sum | |||||||||||||
| 18 - 4Sum | ❌ |
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| 11 - Container With Most Water | ❌ |
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| 1498 - Number of Subsequences That Satisfy The Given Sum Condition | ❌ |
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| 189 - Rotate Array | ❌ |
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| 1968 - Array With Elements Not Equal to Average of Neighbors | ❌ |
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| 881 - Boats to Save People | ❌ |
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| 42 - Trapping Rain Water | ❌ |
| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
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| 121 - Best Time to Buy And Sell Stock | ❌ |
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| 3 - Longest Substring Without Repeating Characters | |||||||||||||
| 424 - Longest Repeating Character Replacement | ❌ |
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| 567 - Permutation In String | ❌ |
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| 1838 - Frequency of The Most Frequent Element | ❌ |
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| 1888 - Minimum Number of Flips to Make The Binary String Alternating | ❌ |
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| 209 - Minimum Size Subarray Sum | ❌ |
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| 658 - Find K Closest Elements | ❌ |
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| 76 - Minimum Window Substring | ❌ |
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| 239 - Sliding Window Maximum | ❌ |
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
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| 20 - Valid Parentheses | |||||||||||||
| 682 - Baseball Game | ❌ |
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| 225 - Implement Stack Using Queues | ❌ |
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| 155 - Min Stack | ❌ |
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| 150 - Evaluate Reverse Polish Notation | ❌ |
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| 22 - Generate Parentheses | ❌ |
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| 735 - Asteroid Collision | ❌ |
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| 739 - Daily Temperatures | ❌ |
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| 901 - Online Stock Span | ❌ |
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| 853 - Car Fleet | ❌ |
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| 71 - Simplify Path | ❌ |
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| 394 - Decode String | ❌ |
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| 402 - Remove K Digits | ❌ |
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| 1209 - Remove All Adjacent Duplicates In String II | ❌ |
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| 132 - 132 Pattern | ❌ |
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| 895 - Maximum Frequency Stack | ❌ |
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| 84 - Largest Rectangle In Histogram | ❌ |
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
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| 704 - Binary Search | ❌ |
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| 35 - Search Insert Position | ❌ |
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| 374 - Guess Number Higher Or Lower | ❌ |
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| 441 - Arranging Coins | ❌ |
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| 977 - Squares of a Sorted Array | ❌ |
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| 367 - Valid Perfect Square | ❌ |
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| 74 - Search a 2D Matrix | ❌ |
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| 875 - Koko Eating Bananas | ❌ |
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| 33 - Search In Rotated Sorted Array | |||||||||||||
| 153 - Find Minimum In Rotated Sorted Array | ❌ |
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| 981 - Time Based Key Value Store | ❌ |
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| 34 - Find First And Last Position of Element In Sorted Array | ❌ |
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| 1898 - Maximum Number of Removable Characters | ❌ |
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| 116 - Populating Next Right Pointers In Each Node | ❌ |
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| 1268 - Search Suggestions System | ❌ |
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| 410 - Split Array Largest Sum | ❌ |
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| 4 - Median of Two Sorted Arrays |
| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
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| 206 - Reverse Linked List | ❌ |
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| 21 - Merge Two Sorted Lists | |||||||||||||
| 234 - Palindrome Linked List | ❌ |
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| 203 - Remove Linked List Elements | ❌ |
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| 83 - Remove Duplicates From Sorted List | ❌ |
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| 160 - Intersection of Two Linked Lists | ❌ |
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| 143 - Reorder List | ❌ |
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| 19 - Remove Nth Node From End of List | |||||||||||||
| 138 - Copy List With Random Pointer | ❌ |
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| 2 - Add Two Numbers | |||||||||||||
| 141 - Linked List Cycle | ❌ |
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| 287 - Find The Duplicate Number | ❌ |
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| 24 - Swap Nodes In Pairs | ❌ |
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| 148 - Sort List | ❌ |
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| 86 - Partition List | ❌ |
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| 61 - Rotate List | ❌ |
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| 92 - Reverse Linked List II | ❌ |
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| 622 - Design Circular Queue | ❌ |
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| 147 - Insertion Sort List | ❌ |
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| 146 - LRU Cache | ❌ |
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| 23 - Merge K Sorted Lists | ❌ |
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| 25 - Reverse Nodes In K Group | ❌ |
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
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| 208 - Implement Trie Prefix Tree | ❌ |
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| 211 - Design Add And Search Words Data Structure | ❌ |
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| 212 - Word Search II | ❌ |
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
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| 703 - Kth Largest Element In a Stream | ❌ |
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| 1046 - Last Stone Weight | ❌ |
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| 973 - K Closest Points to Origin | ❌ |
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| 215 - Kth Largest Element In An Array | ❌ |
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| 621 - Task Scheduler | ❌ |
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| 355 - Design Twitter | ❌ |
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| 1834 - Single Threaded Cpu | ❌ |
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| 1845 - Seat Reservation Manager | ❌ |
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| 1882 - Process Tasks Using Servers | ❌ |
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| 1985 - Find The Kth Largest Integer In The Array | ❌ |
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| 767 - Reorganize String | ❌ |
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| 1405 - Longest Happy String | ❌ |
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| 1094 - Car Pooling | ❌ |
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| 295 - Find Median From Data Stream | ❌ |
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| 1383 - Maximum Performance of a Team | ❌ |
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
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| 78 - Subsets | ❌ |
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| 39 - Combination Sum | ❌ |
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| 77 - Combinations | ❌ |
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| 46 - Permutations | ❌ |
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| 90 - Subsets II | ❌ |
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| 40 - Combination Sum II | ❌ |
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| 47 - Permutations II | ❌ |
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| 79 - Word Search | ❌ |
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| 131 - Palindrome Partitioning | ❌ |
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| 93 - Restore Ip Addresses | ❌ |
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| 17 - Letter Combinations of a Phone Number | ❌ |
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| 473 - Matchsticks to Square | ❌ |
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| 1849 - Splitting a String Into Descending Consecutive Values | ❌ |
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| 1980 - Find Unique Binary String | ❌ |
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| 1239 - Maximum Length of a Concatenated String With Unique Characters | ❌ |
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| 698 - Partition to K Equal Sum Subsets | ❌ |
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| 51 - N Queens | ❌ |
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| 52 - N Queens II | ❌ |
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
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| 332 - Reconstruct Itinerary | ❌ |
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| 1584 - Min Cost to Connect All Points | ❌ |
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| 743 - Network Delay Time | ❌ |
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| 778 - Swim In Rising Water | ❌ |
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| 269 - Alien Dictionary | ❌ |
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| 787 - Cheapest Flights Within K Stops | ❌ |
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
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| 70 - Climbing Stairs | ❌ |
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| 746 - Min Cost Climbing Stairs | ❌ |
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| 198 - House Robber | |||||||||||||
| 213 - House Robber II | |||||||||||||
| 5 - Longest Palindromic Substring | |||||||||||||
| 647 - Palindromic Substrings | ❌ |
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| 91 - Decode Ways | ❌ |
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| 322 - Coin Change | ❌ |
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| 152 - Maximum Product Subarray | ❌ |
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| 139 - Word Break | ❌ |
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| 300 - Longest Increasing Subsequence | ❌ |
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| 416 - Partition Equal Subset Sum | ❌ |
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| 120 - Triangle | ❌ |
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| 740 - Delete And Earn | ❌ |
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| 256 - Paint House | ❌ |
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| 377 - Combination Sum IV | ❌ |
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| 279 - Perfect Squares | ❌ |
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| 1856 - Maximum Subarray Min Product | ❌ |
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| 983 - Minimum Cost For Tickets | ❌ |
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| 343 - Integer Break | ❌ |
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| 673 - Number of Longest Increasing Subsequence | ❌ |
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| 691 - Stickers to Spell Word | ❌ |
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 62 - Unique Paths | ❌ |
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| 1143 - Longest Common Subsequence | ❌ |
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| 309 - Best Time to Buy And Sell Stock With Cooldown | ❌ |
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| 518 - Coin Change II | ❌ |
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| 494 - Target Sum | ❌ |
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| 97 - Interleaving String | ❌ |
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| 877 - Stone Game | ❌ |
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| 64 - Minimum Path Sum | ❌ |
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| 329 - Longest Increasing Path In a Matrix | ❌ |
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| 221 - Maximal Square | ❌ |
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| 5782 - Maximum Alternating Subsequence Sum | ❌ |
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| 115 - Distinct Subsequences | ❌ |
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| 72 - Edit Distance | ❌ |
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| 1220 - Count Vowels Permutation | ❌ |
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| 312 - Burst Balloons | ❌ |
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| 1866 - Number of Ways to Rearrange Sticks With K Sticks Visible | ❌ |
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| 10 - Regular Expression Matching | ❌ |
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 53 - Maximum Subarray | ❌ |
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| 55 - Jump Game | ❌ |
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| 45 - Jump Game II | ❌ |
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| 1871 - Jump Game VII | ❌ |
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| 134 - Gas Station | ❌ |
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| 846 - Hand of Straights | ❌ |
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| 1423 - Maximum Points You Can Obtain From Cards | ❌ |
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| 1898 - Merge Triplets to Form Target Triplet | ❌ |
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| 763 - Partition Labels | ❌ |
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| 678 - Valid Parenthesis String | ❌ |
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| 1921 - Eliminate Maximum Number of Monsters | ❌ |
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| 1029 - Two City Scheduling | ❌ |
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 57 - Insert Interval | |||||||||||||
| 56 - Merge Intervals | ❌ |
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| 435 - Non Overlapping Intervals | ❌ |
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| 253 - Meeting Rooms | ❌ |
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| 919 - Meeting Rooms II | ❌ |
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| 1288 - Remove Covered Intervals | ❌ |
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| 1851 - Minimum Interval to Include Each Query | ❌ |
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 48 - Rotate Image | ❌ |
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| 54 - Spiral Matrix | ❌ |
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| 73 - Set Matrix Zeroes | ❌ |
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| 202 - Happy Number | ❌ |
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| 66 - Plus One | ❌ |
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| 9 - Palindrome Number | ❌ |
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| 263 - Ugly Number | ❌ |
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| 1260 - Shift 2D Grid | ❌ |
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| 13 - Roman to Integer | ❌ |
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| 12 - Integer to Roman | ❌ |
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| 50 - Pow(x, n) | ❌ |
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| 43 - Multiply Strings | ❌ |
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| 2013 - Detect Squares | ❌ |
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| 1041 - Robot Bounded In Circle | ❌ |
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| 6 - Zigzag Conversion | ❌ |
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| 2028 - Find Missing Observations | ❌ |
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| Problem | C | C++ | C# | GO | Java | JS | Kotlin | Python | Ruby | Rust | Scala | Swift | TS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 136 - Single Number | ❌ |
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| 191 - Number of 1 Bits | ❌ |
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| 338 - Counting Bits | ❌ |
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| 190 - Reverse Bits | ❌ |
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| 268 - Missing Number | ❌ |
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| 371 - Sum of Two Integers | ❌ |
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| 7 - Reverse Integer | |||||||||||||
| 67 - Add Binary | ❌ |
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