Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 2806 | Reverse Pairs | Hard | ArrayBinary SearchDivide and Conquer |
| 2807 | Reverse Prefix of Word | Easy | Two PointersStringStack |
| 2808 | Reverse String | Easy | Two PointersString |
| 2809 | Reverse String II | Easy | Two PointersString |
| 2810 | Reverse Subarray To Maximize Array Value | Hard | ArrayMathGreedy |
| 2811 | Reverse Substrings Between Each Pair of Parentheses | Medium | StringStack |
| 2812 | Reverse Vowels of a String | Easy | Two PointersString |
| 2813 | Reverse Words in a String | Medium | Two PointersString |
| 2814 | Reverse Words in a String II | Medium | Two PointersString |
| 2815 | Reverse Words in a String III | Easy | Two PointersString |
| 2816 | Richest Customer Wealth | Easy | ArrayMatrix |
| 2817 | Right Triangles | Medium | ArrayHash TableMath |
| 2818 | Rings and Rods | Easy | Hash TableString |
| 2819 | Rising Temperature | Easy | Database |
| 2820 | RLE Iterator | Medium | ArrayDesignCounting |
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