Practice problems across 75+ categories
Practice problems frequently asked at Trie • 59 problems | 5 Easy | 25 Medium | 25 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 16 | Extra Characters in a String | Medium | ArrayHash TableString |
| 17 | Find the Length of the Longest Common Prefix | Medium | ArrayHash TableString |
| 18 | Implement Magic Dictionary | Medium | Hash TableStringDepth-First Search |
| 19 | Implement Trie II (Prefix Tree) | Unknown | Hash TableStringDesign |
| 20 | Implement Trie (Prefix Tree) | Medium | Hash TableStringDesign |
| 21 | Index Pairs of a String | Easy | ArrayStringTrie |
| 22 | K Divisible Elements Subarrays | Medium | ArrayHash TableTrie |
| 23 | K-th Smallest in Lexicographical Order | Hard | Trie |
| 24 | Lexicographical Numbers | Medium | Depth-First SearchTrie |
| 25 | Longest Common Prefix | Easy | ArrayStringTrie |
| 26 | Longest Common Prefix of K Strings After Removal | Hard | ArrayStringTrie |
| 27 | Longest Common Suffix Queries | Hard | ArrayStringTrie |
| 28 | Longest Word in Dictionary | Medium | ArrayHash TableString |
| 29 | Longest Word With All Prefixes | Medium | ArrayStringDepth-First Search |
| 30 | Map Sum Pairs | Medium | Hash TableStringDesign |
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