Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 511 | Game Play Analysis I | Easy | Database |
| 512 | Game Play Analysis II | Easy | Database |
| 513 | Find Bottom Left Tree Value | Medium | TreeDepth-First SearchBreadth-First Search |
| 514 | Freedom Trail | Hard | StringDynamic ProgrammingDepth-First Search |
| 515 | Coin Change II | Medium | ArrayDynamic Programming |
| 515 | Find Largest Value in Each Tree Row | Medium | TreeDepth-First SearchBreadth-First Search |
| 516 | Longest Palindromic Subsequence | Medium | StringDynamic Programming |
| 517 | Super Washing Machines | Hard | ArrayGreedy |
| 519 | Random Flip Matrix | Medium | Hash TableMathReservoir Sampling |
| 520 | Detect Capital | Easy | String |
| 521 | Longest Uncommon Subsequence I | Easy | String |
| 522 | Longest Uncommon Subsequence II | Medium | ArrayHash TableTwo Pointers |
| 523 | Continuous Subarray Sum | Medium | ArrayHash TableMath |
| 524 | Longest Word in Dictionary through Deleting | Medium | ArrayTwo PointersString |
| 525 | Contiguous Array | Medium | ArrayHash TablePrefix Sum |
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