String (13 completed)
| # | Title | Level | Cats | Solution | Languages | Date Complete |
|---|---|---|---|---|---|---|
| 3 | Longest Substring Without Repeating Characters | Medium | B75, N150 | solution | java | May 22, 2024 |
| 5 | Longest Palindromic Substring | Medium | B75, N150 | solution | py | Jul 05, 2024 |
| 8 | String to Integer (atoi) | Medium | solution | py | Jun 10, 2024 | |
| 13 | Roman to Integer | Easy | solution | py | Jul 31, 2024 | |
| 14 | Longest Common Prefix | Easy | solution | java | May 22, 2024 | |
| 17 | Letter Combinations of a Phone Number | Medium | N150 | solution | java | Jul 14, 2024 |
| 20 | Valid Parentheses | Easy | B75, N150 | solution | java | May 22, 2024 |
| 22 | Generate Parentheses | Medium | N150 | solution | py | Jun 13, 2024 |
| 28 | Find the Index of the First Occurrence in a String | Easy | solution | py | May 22, 2024 | |
| 38 | Count and Say | Medium | Daily | solution | py | Apr 18, 2025 |
| 49 | Group Anagrams | Medium | B75, N150 | solution | py | Jun 13, 2024 |
| 71 | Simplify Path | Medium | solution | py | Jun 11, 2024 | |
| 79 | Word Search | Medium | B75, N150 | solution | py | Jun 27, 2024 |