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1396 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2914. Minimum Number of Changes to Make Binary String Beautiful | Medium | 15% | TopicsString |
| 1346. Check If N and Its Double Exist | Easy | 15% | TopicsArrayHash TableTwo PointersBinary SearchSorting |
| Nim Game | Easy | 15% | TopicsMathBrainteaserMinimaxGame TheoryNim GameImpartial Game |
| 1277. Count Square Submatrices with All Ones | Medium | 15% | TopicsArrayDynamic ProgrammingMatrix |
| Exchange Seats | Medium | 15% | TopicsDatabase |
| 2348. Number of Zero-Filled Subarrays | Medium | 15% | TopicsArrayMath |
| 783. Minimum Distance Between BST Nodes | Easy | 15% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Search TreeBinary Tree |
| 2300. Successful Pairs of Spells and Potions | Medium | 15% | TopicsArrayTwo PointersBinary SearchSorting |
| 1044. Longest Duplicate Substring | Hard | 15% | TopicsStringBinary SearchSliding WindowRolling HashSuffix ArrayHash FunctionSuffix AutomatonSuffix TreeZ AlgorithmBoyer–Moore String-Search Algorithm |
| Restaurant Growth | Medium | 15% | TopicsDatabase |
| 2551. Put Marbles in Bags | Hard | 15% | TopicsArrayGreedySortingHeap (Priority Queue) |
| 1749. Maximum Absolute Sum of Any Subarray | Medium | 15% | TopicsArrayDynamic Programming |
| 1235. Maximum Profit in Job Scheduling | Hard | 15% | TopicsArrayBinary SearchDynamic ProgrammingSorting |
| 1925. Count Square Sum Triples | Easy | 15% | TopicsMathEnumeration |
| 2176. Count Equal and Divisible Pairs in an Array | Easy | 15% | TopicsArray |
| 327. Count of Range Sum | Hard | 15% | TopicsArrayBinary SearchDivide and ConquerBinary Indexed TreeSegment TreeMerge SortOrdered SetTreap |
| 2942. Find Words Containing Character | Easy | 15% | TopicsArrayString |
| 790. Domino and Tromino Tiling | Medium | 15% | TopicsDynamic Programming |
| 1550. Three Consecutive Odds | Easy | 15% | TopicsArray |
| 3068. Find the Maximum Sum of Node Values | Hard | 15% | TopicsArrayDynamic ProgrammingGreedyBit ManipulationTreeSorting |
| 2894. Divisible and Non-divisible Sums Difference | Easy | 15% | TopicsMath |
| Recover Binary Search Tree | Medium | 15% | TopicsTreeDepth-First SearchBinary Search TreeBinary Tree |
| 743. Network Delay Time | Medium | 15% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryHeap (Priority Queue)Shortest PathDijkstra's Algorithm |
| 2929. Distribute Candies Among Children II | Medium | 15% | TopicsMathCombinatoricsEnumeration |
| Third Maximum Number | Easy | 15% | TopicsArraySorting |
