Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 451 | Sort Characters By Frequency | Medium | Hash TableStringSorting |
| 452 | Minimum Number of Arrows to Burst Balloons | Medium | ArrayGreedySorting |
| 453 | Minimum Moves to Equal Array Elements | Medium | ArrayMath |
| 454 | 4Sum II | Medium | ArrayHash Table |
| 455 | Assign Cookies | Easy | ArrayTwo PointersGreedy |
| 456 | 132 Pattern | Medium | ArrayBinary SearchStack |
| 457 | Circular Array Loop | Medium | ArrayHash TableTwo Pointers |
| 457 | LFU Cache | Hard | Hash TableLinked ListDesign |
| 458 | Poor Pigs | Hard | MathDynamic ProgrammingCombinatorics |
| 459 | Repeated Substring Pattern | Easy | StringString Matching |
| 461 | Hamming Distance | Easy | Bit Manipulation |
| 462 | Minimum Moves to Equal Array Elements II | Medium | ArrayMathSorting |
| 463 | Island Perimeter | Easy | ArrayDepth-First SearchBreadth-First Search |
| 464 | Can I Win | Medium | MathDynamic ProgrammingBit Manipulation |
| 465 | Optimal Account Balancing | Hard | ArrayDynamic ProgrammingBacktracking |
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