Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 2806 | Two Best Non-Overlapping Events | Medium | ArrayBinary SearchDynamic Programming |
| 2807 | Two City Scheduling | Medium | ArrayGreedySorting |
| 2808 | Two Furthest Houses With Different Colors | Easy | ArrayGreedy |
| 2809 | Two Out of Three | Easy | ArrayHash TableBit Manipulation |
| 2810 | Two Sum | Easy | ArrayHash Table |
| 2811 | Two Sum BSTs | Medium | Two PointersBinary SearchStack |
| 2812 | Two Sum II - Input Array Is Sorted | Medium | ArrayTwo PointersBinary Search |
| 2813 | Two Sum IV - Input is a BST | Unknown | Hash TableTwo PointersTree |
| 2814 | Two Sum Less Than K | Easy | ArrayTwo PointersBinary Search |
| 2815 | Type of Triangle | Easy | ArrayMathSorting |
| 2816 | Ugly Number II | Medium | Hash TableMathDynamic Programming |
| 2817 | Ugly Number III | Medium | MathBinary SearchCombinatorics |
| 2818 | Uncommon Words from Two Sentences | Easy | Hash TableStringCounting |
| 2819 | Undefined to Null | Medium | JavaScript |
| 2820 | Unique 3-Digit Even Numbers | Easy | ArrayHash TableRecursion |
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