Practice problems across 75+ categories
Practice problems frequently asked at Linked List • 82 problems | 15 Easy | 58 Medium | 8 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 16 | Design Authentication Manager | Medium | Hash TableLinked ListDesign |
| 17 | Design Browser History | Medium | ArrayLinked ListStack |
| 18 | Design Circular Deque | Medium | ArrayLinked ListDesign |
| 19 | Design Circular Queue | Medium | ArrayLinked ListDesign |
| 20 | Design Front Middle Back Queue | Medium | ArrayLinked ListDesign |
| 21 | Design HashMap | Easy | ArrayHash TableLinked List |
| 22 | Design HashSet | Easy | ArrayHash TableLinked List |
| 23 | Design Linked List | Medium | Linked ListDesign |
| 24 | Design Most Recently Used Queue | Medium | ArrayLinked ListDivide and Conquer |
| 25 | Design Phone Directory | Medium | ArrayHash TableLinked List |
| 26 | Design Skiplist | Hard | Linked ListDesign |
| 27 | Design Twitter | Medium | Hash TableLinked ListDesign |
| 28 | Double a Number Represented as a Linked List | Medium | Linked ListMathStack |
| 29 | Find the Minimum and Maximum Number of Nodes Between Critical Points | Medium | Linked List |
| 30 | Flatten a Multilevel Doubly Linked List | Medium | Linked ListDepth-First SearchDoubly-Linked List |
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