Practice problems across 75+ categories
Practice problems frequently asked at Iterator • 9 problems | 1 Easy | 8 Medium | 0 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1 | Binary Search Tree Iterator | Medium | StackTreeDesign |
| 2 | Binary Search Tree Iterator II | Medium | StackTreeDesign |
| 3 | Design Compressed String Iterator | Easy | ArrayStringDesign |
| 4 | Flatten 2D Vector | Medium | ArrayTwo PointersDesign |
| 5 | Flatten Nested List Iterator | Medium | StackTreeDepth-First Search |
| 6 | Iterator for Combination | Medium | StringBacktrackingDesign |
| 7 | Peeking Iterator | Medium | ArrayDesignIterator |
| 8 | RLE Iterator | Medium | ArrayDesignCounting |
| 9 | Zigzag Iterator | Medium | ArrayDesignQueue |
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