Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 61 | Beautiful Arrangement | Medium | ArrayDynamic ProgrammingBacktracking |
| 62 | Beautiful Arrangement II | Medium | ArrayMath |
| 63 | Beautiful Array | Medium | ArrayMathDivide and Conquer |
| 64 | Beautiful Pairs | Hard | ArrayMathDivide and Conquer |
| 65 | Beautiful Towers I | Medium | ArrayStackMonotonic Stack |
| 66 | Beautiful Towers II | Medium | ArrayStackMonotonic Stack |
| 67 | Before and After Puzzle | Medium | ArrayHash TableString |
| 68 | Best Meeting Point | Hard | ArrayMathSorting |
| 69 | Best Poker Hand | Easy | ArrayHash TableCounting |
| 70 | Best Position for a Service Centre | Hard | ArrayMathGeometry |
| 71 | Best Sightseeing Pair | Medium | ArrayDynamic Programming |
| 72 | Best Team With No Conflicts | Medium | ArrayDynamic ProgrammingSorting |
| 73 | Best Time to Buy and Sell Stock | Easy | ArrayDynamic Programming |
| 74 | Best Time to Buy and Sell Stock II | Medium | ArrayDynamic ProgrammingGreedy |
| 75 | Best Time to Buy and Sell Stock III | Hard | ArrayDynamic Programming |
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