Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 2881 | Sequence Reconstruction | Medium | ArrayGraphTopological Sort |
| 2882 | Sequential Digits | Medium | Enumeration |
| 2883 | Sequential Grid Path Cover | Medium | ArrayRecursionMatrix |
| 2884 | Sequentially Ordinal Rank Tracker | Hard | DesignHeap (Priority Queue)Data Stream |
| 2885 | Serialize and Deserialize Binary Tree | Hard | StringTreeDepth-First Search |
| 2886 | Serialize and Deserialize BST | Medium | StringTreeDepth-First Search |
| 2887 | Serialize and Deserialize N-ary Tree | Hard | StringTreeDepth-First Search |
| 2888 | Server Utilization Time | Medium | Database |
| 2889 | Set Intersection Size At Least Two | Hard | ArrayGreedySorting |
| 2890 | Set Mismatch | Easy | ArrayHash TableBit Manipulation |
| 2891 | Shift 2D Grid | Easy | ArrayMatrixSimulation |
| 2892 | Shift Distance Between Two Strings | Medium | ArrayStringPrefix Sum |
| 2893 | Shifting Letters | Medium | ArrayStringPrefix Sum |
| 2894 | Shopping Offers | Medium | ArrayDynamic ProgrammingBacktracking |
| 2895 | Short Encoding of Words | Medium | ArrayHash TableString |
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