Step by step!
| # | Title | Difficulty |
|---|---|---|
| 1 | Two Sum | Easy |
| 771 | Jewels and Stones | Easy |
| 617 | Merge Two Binary Trees | Easy |
| 104 | Maximum Depth of Binary Tree | Easy |
| 136 | Single Number | Easy |
| 226 | Invert Binary Tree | Easy |
| 206 | Reverse Linked List | Easy |
| 283 | Move Zeroes | Easy |
| 566 | Reshape the Matrix | Easy |
| 485 | Max Consecutive Ones | Easy |
| 240 | Search a 2D Matrix II | Medium |
| 378 | Kth Smallest Element in a Sorted Matrix | Medium |
| 645 | Set Mismatch | Easy |
| 343 | Integer Break | Medium |
| 91 | Decode Ways | Medium |