Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1501 | Linked List in Binary Tree | Medium | Linked ListTreeDepth-First Search |
| 1502 | Linked List Random Node | Medium | Linked ListMathReservoir Sampling |
| 1503 | List the Products Ordered in a Period | Easy | Database |
| 1504 | Logger Rate Limiter | Easy | Hash TableDesignData Stream |
| 1505 | Lonely Pixel I | Medium | ArrayHash TableMatrix |
| 1506 | Lonely Pixel II | Medium | ArrayHash TableMatrix |
| 1507 | Long Pressed Name | Easy | Two PointersString |
| 1508 | Longer Contiguous Segments of Ones than Zeros | Easy | String |
| 1509 | Longest Absolute File Path | Medium | StringStackDepth-First Search |
| 1510 | Longest Alternating Subarray | Easy | ArrayEnumeration |
| 1511 | Longest Arithmetic Subsequence | Medium | ArrayHash TableBinary Search |
| 1512 | Longest Arithmetic Subsequence of Given Difference | Medium | ArrayHash TableDynamic Programming |
| 1513 | Longest Binary Subsequence Less Than or Equal to K | Medium | StringDynamic ProgrammingGreedy |
| 1514 | Longest Chunked Palindrome Decomposition | Hard | Two PointersStringDynamic Programming |
| 1515 | Longest Common Prefix | Easy | ArrayStringTrie |
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