Practice problems across 75+ categories
Practice problems frequently asked at Hash Table • 719 problems | 168 Easy | 418 Medium | 127 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 301 | Identify the Largest Outlier in an Array | Medium | ArrayHash TableCounting |
| 302 | Implement Magic Dictionary | Medium | Hash TableStringDepth-First Search |
| 303 | Implement Router | Medium | ArrayHash TableBinary Search |
| 304 | Implement Trie II (Prefix Tree) | Unknown | Hash TableStringDesign |
| 305 | Implement Trie (Prefix Tree) | Medium | Hash TableStringDesign |
| 306 | Increasing Decreasing String | Easy | Hash TableStringCounting |
| 307 | Insert Delete GetRandom O(1) | Medium | ArrayHash TableMath |
| 308 | Insert Delete GetRandom O(1) - Duplicates allowed | Hard | ArrayHash TableMath |
| 309 | Integer to Roman | Medium | Hash TableMathString |
| 310 | Intersection of Multiple Arrays | Easy | ArrayHash TableSorting |
| 311 | Intersection of Three Sorted Arrays | Easy | ArrayHash TableBinary Search |
| 312 | Intersection of Two Arrays | Easy | ArrayHash TableTwo Pointers |
| 313 | Intersection of Two Arrays II | Easy | ArrayHash TableTwo Pointers |
| 314 | Intersection of Two Linked Lists | Easy | Hash TableLinked ListTwo Pointers |
| 315 | Intervals Between Identical Elements | Medium | ArrayHash TablePrefix Sum |
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.
