Bloomberg
1239 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 704. Binary Search | Easy | 55.8% | TopicsArrayBinary Search |
| Fibonacci Number | Easy | 55.8% | TopicsMathDynamic ProgrammingRecursionMemoization |
| 987. Vertical Order Traversal of a Binary Tree | Hard | 55.8% | TopicsHash TableTreeDepth-First SearchBreadth-First SearchSortingBinary Tree |
| 1768. Merge Strings Alternately | Easy | 55.8% | TopicsTwo PointersString |
| Candy | Hard | 55.2% | TopicsArrayGreedy |
| 344. Reverse String | Easy | 55.2% | TopicsTwo PointersString |
| 1249. Minimum Remove to Make Valid Parentheses | Medium | 55.2% | TopicsStringStack |
| 1656. Design an Ordered Stream | Easy | 55.2% | TopicsArrayHash TableDesignData Stream |
| 101. Symmetric Tree | Easy | 54.6% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 134. Gas Station | Medium | 54.6% | TopicsArrayGreedy |
| 138. Copy List with Random Pointer | Medium | 54.6% | TopicsHash TableLinked List |
| 205. Isomorphic Strings | Easy | 54.6% | TopicsHash TableString |
| Minimum Size Subarray Sum | Medium | 54.6% | TopicsArrayBinary SearchSliding WindowPrefix Sum |
| 443. String Compression | Medium | 54.6% | TopicsTwo PointersString |
| Number of Provinces | Medium | 54.6% | TopicsDepth-First SearchBreadth-First SearchUnion-FindGraph Theory |
| 10. Regular Expression Matching | Hard | 53.9% | TopicsStringDynamic ProgrammingRecursion |
| 39. Combination Sum | Medium | 53.9% | TopicsArrayBacktracking |
| 61. Rotate List | Medium | 53.9% | TopicsLinked ListTwo Pointers |
| 268. Missing Number | Easy | 53.9% | TopicsArrayHash TableMathBinary SearchBit ManipulationSorting |
| 17. Letter Combinations of a Phone Number | Medium | 53.3% | TopicsHash TableStringBacktracking |
| 24. Swap Nodes in Pairs | Medium | 53.3% | TopicsLinked ListRecursion |
| 110. Balanced Binary Tree | Easy | 53.3% | TopicsTreeDepth-First SearchBinary Tree |
| 141. Linked List Cycle | Easy | 53.3% | TopicsHash TableLinked ListTwo PointersFloyd's Cycle Finding Algorithm |
| Reverse Words in a String | Medium | 53.3% | TopicsTwo PointersString |
| Split Array Largest Sum | Hard | 53.3% | TopicsArrayBinary SearchDynamic ProgrammingGreedyPrefix Sum |
