Practice problems across 75+ categories
Practice problems frequently asked at Queue • 50 problems | 7 Easy | 23 Medium | 20 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1 | Constrained Subsequence Sum | Hard | ArrayDynamic ProgrammingQueue |
| 2 | Continuous Subarrays | Medium | ArrayQueueSliding Window |
| 3 | Count Non-Decreasing Subarrays After K Operations | Hard | ArrayStackSegment Tree |
| 4 | Count Partitions With Max-Min Difference at Most K | Medium | ArrayDynamic ProgrammingQueue |
| 5 | Count Prime-Gap Balanced Subarrays | Medium | ArrayMathQueue |
| 6 | Count Subarrays With Fixed Bounds | Hard | ArrayQueueSliding Window |
| 7 | Delivering Boxes from Storage to Ports | Hard | ArrayDynamic ProgrammingSegment Tree |
| 8 | Design an Array Statistics Tracker | Hard | Hash TableBinary SearchDesign |
| 9 | Design Circular Deque | Medium | ArrayLinked ListDesign |
| 10 | Design Circular Queue | Medium | ArrayLinked ListDesign |
| 11 | Design Front Middle Back Queue | Medium | ArrayLinked ListDesign |
| 12 | Design Hit Counter | Medium | ArrayBinary SearchDesign |
| 13 | Design Phone Directory | Medium | ArrayHash TableLinked List |
| 14 | Design Snake Game | Medium | ArrayHash TableDesign |
| 15 | Dota2 Senate | Medium | StringGreedyQueue |
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