Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 2836 | Running Sum of 1d Array | Easy | ArrayPrefix Sum |
| 2837 | Running Total for Different Genders | Medium | Database |
| 2838 | Russian Doll Envelopes | Hard | ArrayBinary SearchDynamic Programming |
| 2839 | Sales Analysis I | Easy | Database |
| 2840 | Sales Analysis II | Easy | Database |
| 2841 | Sales Analysis III | Easy | Database |
| 2842 | Sales by Day of the Week | Hard | Database |
| 2843 | Sales Person | Easy | Database |
| 2844 | Same Tree | Easy | TreeDepth-First SearchBreadth-First Search |
| 2845 | Satisfiability of Equality Equations | Medium | ArrayStringUnion Find |
| 2846 | Score After Flipping Matrix | Medium | ArrayGreedyBit Manipulation |
| 2847 | Score of a String | Easy | String |
| 2848 | Score of Parentheses | Medium | StringStack |
| 2849 | Scramble String | Hard | StringDynamic Programming |
| 2850 | Search a 2D Matrix | Medium | ArrayBinary SearchMatrix |
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