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1396 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Island Perimeter | Easy | 15% | TopicsArrayDepth-First SearchBreadth-First SearchMatrix |
| Minimum Absolute Difference in BST | Easy | 15% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Search TreeBinary Tree |
| 872. Leaf-Similar Trees | Easy | 15% | TopicsTreeDepth-First SearchBinary Tree |
| 1046. Last Stone Weight | Easy | 15% | TopicsArrayHeap (Priority Queue) |
| 1092. Shortest Common Supersequence | Hard | 15% | TopicsStringDynamic ProgrammingLongest Common Subsequence |
| 1245. Tree Diameter | Medium | 15% | TopicsTreeDepth-First SearchBreadth-First SearchGraph TheoryTopological SortDP on Trees |
| 2226. Maximum Candies Allocated to K Children | Medium | 15% | TopicsArrayBinary Search |
| Design Skiplist | Hard | 15% | TopicsLinked ListDesign |
| 1373. Maximum Sum BST in Binary Tree | Hard | 15% | TopicsDynamic ProgrammingTreeDepth-First SearchBinary Search TreeBinary TreeDP on Trees |
| 1438. Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit | Medium | 15% | TopicsArrayQueueSliding WindowHeap (Priority Queue)Ordered SetMonotonic Queue |
| 1854. Maximum Population Year | Easy | 15% | TopicsArrayCountingPrefix Sum |
| 2073. Time Needed to Buy Tickets | Easy | 15% | TopicsArrayQueueSimulation |
| 2418. Sort the People | Easy | 15% | TopicsArrayHash TableStringSorting |
| 2461. Maximum Sum of Distinct Subarrays With Length K | Medium | 15% | TopicsArrayHash TableSliding Window |
| Array Prototype Last | Easy | 15% | Topics— |
| 2104. Sum of Subarray Ranges | Medium | 15% | TopicsArrayStackMonotonic Stack |
| 609. Find Duplicate File in System | Medium | 15% | TopicsArrayHash TableString |
| Permutation Sequence | Hard | 15% | TopicsMathRecursion |
| 1446. Consecutive Characters | Easy | 15% | TopicsString |
| 843. Guess the Word | Hard | 15% | TopicsArrayMathStringMinimaxInteractiveGame Theory |
| 214. Shortest Palindrome | Hard | 15% | TopicsStringRolling HashString MatchingHash FunctionManacherZ AlgorithmKnuth–Morris–Pratt Algorithm |
| Lexicographical Numbers | Medium | 15% | TopicsDepth-First SearchTrie |
| 1475. Final Prices With a Special Discount in a Shop | Easy | 15% | TopicsArrayStackMonotonic Stack |
| 2034. Stock Price Fluctuation | Medium | 15% | TopicsHash TableDesignHeap (Priority Queue)Data StreamOrdered Set |
| 453. Minimum Moves to Equal Array Elements | Medium | 15% | TopicsArrayMath |
