Practice problems across 75+ categories
Practice problems frequently asked at Linked List • 82 problems | 15 Easy | 58 Medium | 8 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 31 | Flatten Binary Tree to Linked List | Medium | Linked ListStackTree |
| 32 | Insert Greatest Common Divisors in Linked List | Medium | Linked ListMathNumber Theory |
| 33 | Insert into a Sorted Circular Linked List | Medium | Linked List |
| 34 | Insertion Sort List | Medium | Linked ListSorting |
| 35 | Intersection of Two Linked Lists | Easy | Hash TableLinked ListTwo Pointers |
| 36 | LFU Cache | Hard | Hash TableLinked ListDesign |
| 37 | Linked List Components | Medium | ArrayHash TableLinked List |
| 38 | Linked List Cycle | Easy | Hash TableLinked ListTwo Pointers |
| 39 | Linked List Cycle II | Medium | Hash TableLinked ListTwo Pointers |
| 40 | Linked List Frequency | Unknown | Hash TableLinked ListCounting |
| 41 | Linked List in Binary Tree | Medium | Linked ListTreeDepth-First Search |
| 42 | Linked List Random Node | Medium | Linked ListMathReservoir Sampling |
| 43 | LRU Cache | Medium | Hash TableLinked ListDesign |
| 44 | Max Stack | Hard | Linked ListStackDesign |
| 45 | Maximum Twin Sum of a Linked List | Medium | Linked ListTwo PointersStack |
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