2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Magical String | Medium | 21% | TopicsTwo PointersString |
| Max Consecutive Ones II | Medium | 21% | TopicsArrayDynamic ProgrammingSliding Window |
| IPO | Hard | 21% | TopicsArrayGreedySortingHeap (Priority Queue) |
| Encode and Decode TinyURL | Medium | 21% | TopicsHash TableStringDesignHash Function |
| Next Greater Element III | Medium | 21% | TopicsMathTwo PointersString |
| 572. Subtree of Another Tree | Easy | 21% | TopicsTreeDepth-First SearchString MatchingBinary TreeHash Function |
| Sentence Similarity II | Medium | 21% | TopicsArrayHash TableStringDepth-First SearchBreadth-First SearchUnion-Find |
| Basic Calculator III | Hard | 21% | TopicsMathStringStackRecursion |
| Insert into a Sorted Circular Linked List | Medium | 21% | TopicsLinked List |
| 855. Exam Room | Medium | 21% | TopicsDesignHeap (Priority Queue)Ordered Set |
| 942. DI String Match | Easy | 21% | TopicsArrayTwo PointersStringGreedy |
| 947. Most Stones Removed with Same Row or Column | Medium | 21% | TopicsHash TableDepth-First SearchUnion-FindGraph TheoryBipartite Graph |
| 952. Largest Component Size by Common Factor | Hard | 21% | TopicsArrayHash TableMathUnion-FindNumber TheoryPrime Factorization |
| 955. Delete Columns to Make Sorted II | Medium | 21% | TopicsArrayStringGreedy |
| 1024. Video Stitching | Medium | 21% | TopicsArrayDynamic ProgrammingGreedy |
| 1025. Divisor Game | Easy | 21% | TopicsMathDynamic ProgrammingBrainteaserGame TheoryImpartial Game |
| 1313. Decompress Run-Length Encoded List | Easy | 21% | TopicsArray |
| 1632. Rank Transform of a Matrix | Hard | 21% | TopicsArrayUnion-FindGraph TheoryTopological SortSortingMatrix |
| 2079. Watering Plants | Medium | 21% | TopicsArraySimulation |
| 1249. Minimum Remove to Make Valid Parentheses | Medium | 21% | TopicsStringStack |
| 1401. Circle and Rectangle Overlapping | Medium | 21% | TopicsMathGeometry |
| 1392. Longest Happy Prefix | Hard | 21% | TopicsStringRolling HashString MatchingHash FunctionZ AlgorithmKnuth–Morris–Pratt Algorithm |
| 1444. Number of Ways of Cutting a Pizza | Hard | 21% | TopicsArrayDynamic ProgrammingMemoizationMatrixPrefix Sum |
| 1477. Find Two Non-overlapping Sub-arrays Each With Target Sum | Medium | 21% | TopicsArrayHash TableBinary SearchDynamic ProgrammingSliding Window |
| 1728. Cat and Mouse II | Hard | 21% | TopicsArrayMathDynamic ProgrammingGraph TheoryTopological SortMemoizationMinimaxMatrixGame TheoryZero-Sum Game |
