Practice problems across 75+ categories
Practice problems frequently asked at Hash Table • 719 problems | 168 Easy | 418 Medium | 127 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 316 | Invalid Transactions | Medium | ArrayHash TableString |
| 317 | Isomorphic Strings | Easy | Hash TableString |
| 318 | Jewels and Stones | Easy | Hash TableString |
| 319 | Jump Game IV | Hard | ArrayHash TableBreadth-First Search |
| 320 | K-diff Pairs in an Array | Medium | ArrayHash TableTwo Pointers |
| 321 | K Divisible Elements Subarrays | Medium | ArrayHash TableTrie |
| 322 | K-Similar Strings | Hard | Hash TableStringBreadth-First Search |
| 323 | Keep Multiplying Found Values by Two | Easy | ArrayHash TableSorting |
| 324 | Keyboard Row | Easy | ArrayHash TableString |
| 325 | Kill Process | Medium | ArrayHash TableTree |
| 326 | Kth Distinct String in an Array | Easy | ArrayHash TableString |
| 327 | Largest Color Value in a Directed Graph | Hard | Hash TableDynamic ProgrammingGraph |
| 328 | Largest Combination With Bitwise AND Greater Than Zero | Medium | ArrayHash TableBit Manipulation |
| 329 | Largest Component Size by Common Factor | Hard | ArrayHash TableMath |
| 330 | Largest Palindromic Number | Medium | Hash TableStringGreedy |
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