Practice problems across 75+ categories
Practice problems frequently asked at Trie • 59 problems | 5 Easy | 25 Medium | 25 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 46 | Remove Sub-Folders from the Filesystem | Medium | ArrayStringDepth-First Search |
| 47 | Replace Words | Medium | ArrayHash TableString |
| 48 | Search Suggestions System | Medium | ArrayStringBinary Search |
| 49 | Short Encoding of Words | Medium | ArrayHash TableString |
| 50 | Shortest Uncommon Substring in an Array | Medium | ArrayHash TableString |
| 51 | Stream of Characters | Hard | ArrayStringDesign |
| 52 | Sum of Prefix Scores of Strings | Hard | ArrayStringTrie |
| 53 | Top K Frequent Words | Medium | ArrayHash TableString |
| 54 | Word Abbreviation | Hard | ArrayStringGreedy |
| 55 | Word Break | Medium | ArrayHash TableString |
| 56 | Word Break II | Hard | ArrayHash TableString |
| 57 | Word Search II | Hard | ArrayStringBacktracking |
| 58 | Word Squares | Hard | ArrayStringBacktracking |
| 59 | Words Within Two Edits of Dictionary | Medium | ArrayStringTrie |
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