Practice problems across 75+ categories
Practice problems frequently asked at String • 803 problems | 228 Easy | 390 Medium | 177 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 151 | Decode the Message | Easy | Hash TableString |
| 152 | Decode the Slanted Ciphertext | Medium | StringSimulation |
| 153 | Decode Ways | Medium | StringDynamic Programming |
| 154 | Decode Ways II | Hard | StringDynamic Programming |
| 155 | Decoded String at Index | Medium | StringStack |
| 156 | Decremental String Concatenation | Medium | ArrayStringDynamic Programming |
| 157 | Decrypt String from Alphabet to Integer Mapping | Easy | String |
| 158 | Defanging an IP Address | Easy | String |
| 159 | Delete Characters to Make Fancy String | Easy | String |
| 160 | Delete Columns to Make Sorted | Easy | ArrayString |
| 161 | Delete Columns to Make Sorted II | Medium | ArrayStringGreedy |
| 162 | Delete Columns to Make Sorted III | Hard | ArrayStringDynamic Programming |
| 163 | Delete Duplicate Folders in System | Hard | ArrayHash TableString |
| 164 | Delete Operation for Two Strings | Medium | StringDynamic Programming |
| 165 | Design a Food Rating System | Medium | ArrayHash TableString |
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