Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 436 | Erect the Fence II | Hard | ArrayMathGeometry |
| 437 | Escape a Large Maze | Hard | ArrayHash TableDepth-First Search |
| 438 | Escape The Ghosts | Medium | ArrayMath |
| 439 | Escape the Spreading Fire | Hard | ArrayBinary SearchBreadth-First Search |
| 440 | Evaluate Division | Medium | ArrayStringDepth-First Search |
| 441 | Evaluate Reverse Polish Notation | Medium | ArrayMathStack |
| 442 | Evaluate the Bracket Pairs of a String | Medium | ArrayHash TableString |
| 443 | Exclusive Time of Functions | Medium | ArrayStack |
| 444 | Expressive Words | Medium | ArrayTwo PointersString |
| 445 | Extra Characters in a String | Medium | ArrayHash TableString |
| 446 | Fair Candy Swap | Easy | ArrayHash TableBinary Search |
| 447 | Fair Distribution of Cookies | Medium | ArrayDynamic ProgrammingBacktracking |
| 448 | Falling Squares | Hard | ArraySegment TreeOrdered Set |
| 449 | Faulty Sensor | Easy | ArrayTwo Pointers |
| 450 | Fill a Special Grid | Medium | ArrayDivide and ConquerMatrix |
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