| # | Title | Source Code | Difficulty |
|---|---|---|---|
| 646 | Maximum Length of Pair Chain | JavaScript | Medium |
| 516 | Longest Palindromic Subsequence | JavaScript | Medium |
| 464 | Can I Win | JavaScript | Medium |
| 445 | Add Two Numbers II | JavaScript | Medium |
| 279 | Perfect Squares | JavaScript | Medium |
| 264 | Ugly Number II | JavaScript | Medium |
| 263 | Ugly Number | JavaScript | Easy |
| 141 | Linked List Cycle | JavaScript | Easy |
| 100 | Same Tree | JavaScript | Easy |
| 79 | Word Search | JavaScript | Medium |
| 13 | Roman to Integer | JavaScript | Easy |
| 9 | Palindrome Number | JavaScript | Easy |
| 7 | Reverse Integer | C | Easy |
| 3 | Longest Substring Without Repeating Characters | JavaScript | Medium |
| 2 | Add Two Numbers | C | Medium |
| 1 | Two Sum | C | Easy |