Practice problems across 75+ categories
Practice problems frequently asked at String • 803 problems | 228 Easy | 390 Medium | 177 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 226 | Find Most Frequent Vowel and Consonant | Easy | Hash TableStringCounting |
| 227 | Find Permutation | Medium | ArrayStringStack |
| 228 | Find Resultant Array After Removing Anagrams | Easy | ArrayHash TableString |
| 229 | Find Special Substring of Length K | Easy | String |
| 230 | Find Substring With Given Hash Value | Hard | StringSliding WindowRolling Hash |
| 231 | Find Subtree Sizes After Changes | Medium | ArrayHash TableString |
| 232 | Find the Closest Palindrome | Hard | MathString |
| 233 | Find the Difference | Easy | Hash TableStringBit Manipulation |
| 234 | Find the Divisibility Array of a String | Medium | ArrayMathString |
| 235 | Find the Encrypted String | Easy | String |
| 236 | Find the Index of the First Occurrence in a String | Easy | Two PointersStringString Matching |
| 237 | Find the K-Beauty of a Number | Easy | MathStringSliding Window |
| 238 | Find The K-th Lucky Number | Medium | MathStringBit Manipulation |
| 239 | Find the Kth Largest Integer in the Array | Medium | ArrayStringDivide and Conquer |
| 240 | Find the Largest Palindrome Divisible by K | Hard | MathStringDynamic Programming |
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