Bloomberg
1239 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Sparse Matrix Multiplication | Medium | 32% | TopicsArrayHash TableMatrixLinear Algebra |
| Remove Duplicate Letters | Medium | 32% | TopicsStringStackGreedyMonotonic Stack |
| 367. Valid Perfect Square | Easy | 32% | TopicsMathBinary Search |
| 389. Find the Difference | Easy | 32% | TopicsHash TableStringBit ManipulationSorting |
| 523. Continuous Subarray Sum | Medium | 32% | TopicsArrayHash TableMathPrefix SumPigeonhole Principle |
| Maximum Product of Three Numbers | Easy | 32% | TopicsArrayMathSorting |
| Design Search Autocomplete System | Hard | 32% | TopicsStringDepth-First SearchDesignTrieSortingHeap (Priority Queue)Data Stream |
| 647. Palindromic Substrings | Medium | 32% | TopicsTwo PointersStringDynamic Programming |
| Trim a Binary Search Tree | Medium | 32% | TopicsTreeDepth-First SearchBinary Search TreeBinary Tree |
| 713. Subarray Product Less Than K | Medium | 32% | TopicsArrayBinary SearchSliding WindowPrefix Sum |
| 802. Find Eventual Safe States | Medium | 32% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryTopological SortKosaraju's AlgorithmTarjan's SCC Algorithm |
| 867. Transpose Matrix | Easy | 32% | TopicsArrayMatrixSimulation |
| 1047. Remove All Adjacent Duplicates In String | Easy | 32% | TopicsStringStack |
| 1095. Find in Mountain Array | Hard | 32% | TopicsArrayBinary SearchInteractiveTernary Search |
| Replace Employee ID With The Unique Identifier | Easy | 32% | TopicsDatabase |
| 1470. Shuffle the Array | Easy | 32% | TopicsArray |
| 1920. Build Array from Permutation | Easy | 32% | TopicsArraySimulation |
| 1365. How Many Numbers Are Smaller Than the Current Number | Easy | 32% | TopicsArrayHash TableSortingCounting Sort |
| 992. Subarrays with K Different Integers | Hard | 32% | TopicsArrayHash TableSliding WindowCounting |
| Heaters | Medium | 32% | TopicsArrayTwo PointersBinary SearchSorting |
| 97. Interleaving String | Medium | 32% | TopicsStringDynamic Programming |
| 1781. Sum of Beauty of All Substrings | Medium | 32% | TopicsHash TableStringCounting |
| 771. Jewels and Stones | Easy | 32% | TopicsHash TableString |
| Rank Scores | Medium | 32% | TopicsDatabase |
| 815. Bus Routes | Hard | 32% | TopicsArrayHash TableBreadth-First Search |
