Bloomberg
1239 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 977. Squares of a Sorted Array | Easy | 53.3% | TopicsArrayTwo PointersSorting |
| Recyclable and Low Fat Products | Easy | 53.3% | TopicsDatabase |
| 67. Add Binary | Easy | 52.6% | TopicsMathStringBit ManipulationSimulation |
| 152. Maximum Product Subarray | Medium | 52.6% | TopicsArrayDynamic Programming |
| Sliding Window Maximum | Hard | 52.6% | TopicsArrayQueueSliding WindowHeap (Priority Queue)Monotonic QueueRange Minimum/Maximum Query |
| 62. Unique Paths | Medium | 51.9% | TopicsMathDynamic ProgrammingCombinatorics |
| 100. Same Tree | Easy | 51.9% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 105. Construct Binary Tree from Preorder and Inorder Traversal | Medium | 51.9% | TopicsArrayHash TableDivide and ConquerTreeBinary Tree |
| 12. Integer to Roman | Medium | 51.1% | TopicsHash TableMathString |
| 72. Edit Distance | Medium | 51.1% | TopicsStringDynamic Programming |
| 127. Word Ladder | Hard | 51.1% | TopicsHash TableStringBreadth-First SearchBidirectional Search |
| 349. Intersection of Two Arrays | Easy | 51.1% | TopicsArrayHash TableTwo PointersBinary SearchSorting |
| Next Greater Element II | Medium | 51.1% | TopicsArrayStackMonotonic Stack |
| 933. Number of Recent Calls | Easy | 51.1% | TopicsDesignQueueData Stream |
| 1244. Design A Leaderboard | Medium | 51.1% | TopicsHash TableDesignSorting |
| 1583. Count Unhappy Friends | Medium | 51.1% | TopicsArraySimulation |
| 1838. Frequency of the Most Frequent Element | Medium | 51.1% | TopicsArrayBinary SearchGreedySliding WindowSortingPrefix Sum |
| 1929. Concatenation of Array | Easy | 51.1% | TopicsArraySimulation |
| 19. Remove Nth Node From End of List | Medium | 50.4% | TopicsLinked ListTwo Pointers |
| 36. Valid Sudoku | Medium | 50.4% | TopicsArrayHash TableMatrix |
| 46. Permutations | Medium | 50.4% | TopicsArrayBacktracking |
| 63. Unique Paths II | Medium | 50.4% | TopicsArrayDynamic ProgrammingMatrix |
| 74. Search a 2D Matrix | Medium | 50.4% | TopicsArrayBinary SearchMatrix |
| Add Two Numbers II | Medium | 50.4% | TopicsLinked ListMathStack |
| 58. Length of Last Word | Easy | 49.5% | TopicsString |
