Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 2521 | Paint House III | Hard | ArrayDynamic Programming |
| 2522 | Paint House IV | Medium | ArrayDynamic Programming |
| 2523 | Painting a Grid With Three Different Colors | Hard | Dynamic Programming |
| 2524 | Painting the Walls | Hard | ArrayDynamic Programming |
| 2525 | Pairs of Songs With Total Durations Divisible by 60 | Medium | ArrayHash TableCounting |
| 2526 | Palindrome Linked List | Easy | Linked ListTwo PointersStack |
| 2527 | Palindrome Number | Easy | Math |
| 2528 | Palindrome Pairs | Hard | ArrayHash TableString |
| 2529 | Palindrome Partitioning | Medium | StringDynamic ProgrammingBacktracking |
| 2530 | Palindrome Partitioning II | Hard | StringDynamic Programming |
| 2531 | Palindrome Partitioning III | Hard | StringDynamic Programming |
| 2532 | Palindrome Partitioning IV | Hard | StringDynamic Programming |
| 2533 | Palindrome Permutation | Easy | Hash TableStringBit Manipulation |
| 2534 | Palindrome Permutation II | Medium | Hash TableStringBacktracking |
| 2535 | Palindrome Rearrangement Queries | Hard | Hash TableStringPrefix Sum |
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