| 798 | Smallest Rotation with Highest Score | Hard |
| 801 | Minimum Swaps To Make Sequences Increasing | Hard |
| 803 | Bricks Falling When Hit | Hard |
| 804 | Unique Morse Code Words | Easy |
| 806 | Number of Lines To Write String | Easy |
| 807 | Max Increase to Keep City Skyline | Medium |
| 809 | Expressive Words | Medium |
| 810 | Chalkboard XOR Game | Hard |
| 811 | Subdomain Visit Count | Medium |
| 812 | Largest Triangle Area | Easy |
| 813 | Largest Sum of Averages | Medium |
| 815 | Bus Routes | Hard |
| 820 | Short Encoding of Words | Medium |
| 821 | Shortest Distance to a Character | Easy |
| 822 | Card Flipping Game | Medium |
| 823 | Binary Trees With Factors | Medium |
| 825 | Friends Of Appropriate Ages | Medium |
| 826 | Most Profit Assigning Work | Medium |
| 827 | Making A Large Island | Hard |
| 832 | Flipping an Image | Easy |
| 839 | Similar String Groups | Hard |
| 840 | Magic Squares In Grid | Medium |
| 843 | Guess the Word | Hard |
| 845 | Longest Mountain in Array | Medium |
| 846 | Hand of Straights | Medium |
| 848 | Shifting Letters | Medium |
| 849 | Maximize Distance to Closest Person | Medium |
| 850 | Rectangle Area II | Hard |
| 851 | Loud and Rich | Medium |
| 852 | Peak Index in a Mountain Array | Medium |