Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 721 | Design a Todo List | Medium | ArrayHash TableString |
| 722 | Design Add and Search Words Data Structure | Medium | StringDepth-First SearchDesign |
| 723 | Design an Array Statistics Tracker | Hard | Hash TableBinary SearchDesign |
| 724 | Design an ATM Machine | Medium | ArrayGreedyDesign |
| 725 | Design an Expression Tree With Evaluate Function | Medium | ArrayMathStack |
| 726 | Design an Ordered Stream | Easy | ArrayHash TableDesign |
| 727 | Design Authentication Manager | Medium | Hash TableLinked ListDesign |
| 728 | Design Bitset | Medium | ArrayHash TableString |
| 729 | Design Bounded Blocking Queue | Medium | Concurrency |
| 730 | Design Browser History | Medium | ArrayLinked ListStack |
| 731 | Design Cancellable Function | Hard | JavaScript |
| 732 | Design Circular Deque | Medium | ArrayLinked ListDesign |
| 733 | Design Circular Queue | Medium | ArrayLinked ListDesign |
| 734 | Design Compressed String Iterator | Easy | ArrayStringDesign |
| 735 | Design File System | Medium | Hash TableStringDesign |
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