Practice problems across 75+ categories
Practice problems frequently asked at Hash Table • 719 problems | 168 Easy | 418 Medium | 127 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 526 | Number of Flowers in Full Bloom | Hard | ArrayHash TableBinary Search |
| 527 | Number of Good Pairs | Easy | ArrayHash TableMath |
| 528 | Number of Good Paths | Hard | ArrayHash TableTree |
| 529 | Number of Good Ways to Split a String | Medium | Hash TableStringDynamic Programming |
| 530 | Number of Islands II | Hard | ArrayHash TableUnion Find |
| 531 | Number of Matching Subsequences | Medium | ArrayHash TableString |
| 532 | Number of Nodes in the Sub-Tree With the Same Label | Medium | Hash TableTreeDepth-First Search |
| 533 | Number of Pairs of Interchangeable Rectangles | Medium | ArrayHash TableMath |
| 534 | Number of Pairs of Strings With Concatenation Equal to Target | Medium | ArrayHash TableString |
| 535 | Number of Same-End Substrings | Medium | ArrayHash TableString |
| 536 | Number of Squareful Arrays | Hard | ArrayHash TableMath |
| 537 | Number of Submatrices That Sum to Target | Hard | ArrayHash TableMatrix |
| 538 | Number of Substrings Containing All Three Characters | Medium | Hash TableStringSliding Window |
| 539 | Number of Substrings With Fixed Ratio | Medium | Hash TableMathString |
| 540 | Number of Unequal Triplets in Array | Easy | ArrayHash TableSorting |
Powerful online tools to boost your productivity
Coding Ground For Developers
Code, Edit, Run and ShareIgnite your coding potential on Coding Ground - an immersive online platform for hands-on learning, collaboration, and skill development.
