| # | Title | Solution | Difficulty | Tag |
|---|---|---|---|---|
| 7 | Reverse Integer | Python | Easy | Math |
| 136 | Single Number | Python | Easy | Hash Table Bit Manipulation |
| 226 | Invert Binary Tree | C++ Python | Easy | Tree |
| 292 | Nim Game | C++ | Easy | Brainteaser |
| 344 | Reverse String | Python | Easy | Two Pointers String |
| 387 | First Unique Character in a String | Python | Easy | Hash Table String |
| 520 | Detect Capital | Python | Easy | String |
| 557 | Reverse Words in a String III | Python | Easy | String |
| 561 | Array Partition I | Python | Easy | Array |
| 654 | Maximum Binary Tree | Python | Medium | Tree |
| 728 | Self Dividing Numbers | Python | Easy | Math |
| 796 | Rotate String | Python | Easy | |
| 804 | Unique Morse Code Words | Python | Easy | |
| 807 | Max Increase to Keep City Skyline | Python | Medium |