Practice problems across 75+ categories
Practice problems frequently asked at Design • 128 problems | 15 Easy | 81 Medium | 30 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 91 | Moving Average from Data Stream | Easy | ArrayDesignQueue |
| 92 | My Calendar I | Medium | ArrayBinary SearchDesign |
| 93 | My Calendar II | Medium | ArrayBinary SearchDesign |
| 94 | My Calendar III | Hard | Binary SearchDesignSegment Tree |
| 95 | Number of Recent Calls | Easy | DesignQueueData Stream |
| 96 | Online Election | Medium | ArrayHash TableBinary Search |
| 97 | Online Majority Element In Subarray | Hard | ArrayBinary SearchDesign |
| 98 | Online Stock Span | Medium | StackDesignMonotonic Stack |
| 99 | Operations on Tree | Medium | ArrayHash TableTree |
| 100 | Peeking Iterator | Medium | ArrayDesignIterator |
| 101 | Prefix and Suffix Search | Hard | ArrayHash TableString |
| 102 | Product of the Last K Numbers | Medium | ArrayMathDesign |
| 103 | Range Frequency Queries | Medium | ArrayHash TableBinary Search |
| 104 | Range Module | Hard | DesignSegment TreeOrdered Set |
| 105 | Range Sum Query 2D - Immutable | Medium | ArrayDesignMatrix |
Powerful online tools to boost your productivity
Coding Ground For Developers
Code, Edit, Run and ShareIgnite your coding potential on Coding Ground - an immersive online platform for hands-on learning, collaboration, and skill development.
