Practice problems across 75+ categories
Practice problems frequently asked at Hash Table • 719 problems | 168 Easy | 418 Medium | 127 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 256 | Find the Maximum Number of Elements in Subset | Medium | ArrayHash TableEnumeration |
| 257 | Find the Median of the Uniqueness Array | Hard | ArrayHash TableBinary Search |
| 258 | Find the Most Common Response | Medium | ArrayHash TableString |
| 259 | Find the Number of Distinct Colors Among the Balls | Medium | ArrayHash TableSimulation |
| 260 | Find the Number of Good Pairs I | Easy | ArrayHash Table |
| 261 | Find the Number of Good Pairs II | Medium | ArrayHash Table |
| 262 | Find the Number of Winning Players | Easy | ArrayHash TableCounting |
| 263 | Find the Prefix Common Array of Two Arrays | Medium | ArrayHash TableBit Manipulation |
| 264 | Find the Substring With Maximum Cost | Medium | ArrayHash TableString |
| 265 | Find the Town Judge | Easy | ArrayHash TableGraph |
| 266 | Find the XOR of Numbers Which Appear Twice | Easy | ArrayHash TableBit Manipulation |
| 267 | Find Two Non-overlapping Sub-arrays Each With Target Sum | Medium | ArrayHash TableBinary Search |
| 268 | Find Unique Binary String | Medium | ArrayHash TableString |
| 269 | Find Valid Pair of Adjacent Digits in String | Easy | Hash TableStringCounting |
| 270 | Find Winner on a Tic Tac Toe Game | Easy | ArrayHash TableMatrix |
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