| 0208 | Implement Trie (Prefix Tree) LeetCode 0208 Design, Trie, Hash Table, String | Medium | | |
| 0677 | Map Sum Pairs LeetCode 0677 Design, Trie, Hash Table, String | Medium | | |
| 0648 | Replace Words LeetCode XXXX Trie, Array, Hash Table, String | Medium | | |
| 0642 | Design Search Autocomplete System LeetCode XXXX Design, Trie, String, Data Stream | Hard | | |
| 0211 | Design Add and Search Words Data Structure LeetCode XXXX Depth-First Search, Design, Trie, String | Medium | | |
| 0421 | Maximum XOR of Two Numbers in an Array LeetCode XXXX Bit Manipulation, Trie, Array, Hash Table | Medium | | |
| 0212 | Word Search II LeetCode 0212 Trie, Array, String, Backtracking, Matrix | Hard | | |
| 0425 | Word Squares LeetCode XXXX Trie, Array, String, Backtracking | Hard | | |
| 0336 | Palindrome Pairs LeetCode XXXX Trie, Array, Hash Table, String | Hard | | |
| 1023 | Camelcase Matching LeetCode XXXX Trie, Two Pointers, String, String Matching | Medium | | |
| 0676 | Implement Magic Dictionary LeetCode XXXX Design, Trie, Hash Table, String | Medium | | |
| 0440 | K-th Smallest in Lexicographical Order | | Trie | Hard |