2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 3592. Inverse Coin Change | Medium | 32% | TopicsArrayDynamic Programming |
| 3738. Longest Non-Decreasing Subarray After Replacing at Most One Element | Medium | 32% | TopicsArrayDynamic Programming |
| Remove Duplicates from Sorted List II | Medium | 31.3% | TopicsLinked ListTwo Pointers |
| 1044. Longest Duplicate Substring | Hard | 31.3% | TopicsStringBinary SearchSliding WindowRolling HashSuffix ArrayHash FunctionSuffix AutomatonSuffix TreeZ AlgorithmBoyer–Moore String-Search Algorithm |
| 2101. Detonate the Maximum Bombs | Medium | 31.3% | TopicsArrayMathDepth-First SearchBreadth-First SearchGraph TheoryGeometry |
| 3169. Count Days Without Meetings | Medium | 31.3% | TopicsArraySorting |
| 63. Unique Paths II | Medium | 31.3% | TopicsArrayDynamic ProgrammingMatrix |
| Recover Binary Search Tree | Medium | 31.3% | TopicsTreeDepth-First SearchBinary Search TreeBinary Tree |
| 191. Number of 1 Bits | Easy | 31.3% | TopicsDivide and ConquerBit Manipulation |
| 438. Find All Anagrams in a String | Medium | 31.3% | TopicsHash TableStringSliding Window |
| Delete Node in a BST | Medium | 31.3% | TopicsTreeBinary Search TreeBinary Tree |
| 662. Maximum Width of Binary Tree | Medium | 31.3% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 695. Max Area of Island | Medium | 31.3% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| 733. Flood Fill | Easy | 31.3% | TopicsArrayDepth-First SearchBreadth-First SearchMatrix |
| Customer Who Visited but Did Not Make Any Transactions | Easy | 31.3% | TopicsDatabase |
| 877. Stone Game | Medium | 31.3% | TopicsArrayMathDynamic ProgrammingMinimaxGame TheoryZero-Sum Game |
| Maximum Product of Three Numbers | Easy | 31.3% | TopicsArrayMathSorting |
| 1353. Maximum Number of Events That Can Be Attended | Medium | 31.3% | TopicsArrayGreedySortingHeap (Priority Queue) |
| Fraction to Recurring Decimal | Medium | 30.6% | TopicsHash TableMathString |
| 346. Moving Average from Data Stream | Easy | 30.6% | TopicsArrayDesignQueueData Stream |
| 437. Path Sum III | Medium | 30.6% | TopicsTreeDepth-First SearchBinary Tree |
| Maximum Swap | Medium | 30.6% | TopicsMathGreedy |
| 834. Sum of Distances in Tree | Hard | 30.6% | TopicsDynamic ProgrammingTreeDepth-First SearchGraph TheoryDP on Trees |
| 2349. Design a Number Container System | Medium | 30.6% | TopicsHash TableDesignHeap (Priority Queue)Ordered Set |
| Permutations II | Medium | 30.6% | TopicsArrayBacktrackingSorting |
