| 823 | Split Array With Same Average | Hard |
| 844 | Backspace String Compare | Easy |
| 852 | Peak Index in a Mountain Array | Medium |
| 859 | Buddy Strings | Easy |
| 861 | Flipping an Image | Easy |
| 862 | Find And Replace in String | Medium |
| 863 | All Nodes Distance K in Binary Tree | Medium |
| 864 | Image Overlap | Medium |
| 867 | Transpose Matrix | Easy |
| 872 | Leaf-Similar Trees | Easy |
| 875 | Koko Eating Bananas | Medium |
| 880 | Decoded String at Index | Medium |
| 881 | Boats to Save People | Medium |
| 894 | All Possible Full Binary Trees | Medium |
| 896 | Monotonic Array | Easy |
| 905 | Sort Array By Parity | Easy |
| 907 | Sum of Subarray Minimums | Medium |
| 910 | Smallest Range II | Medium |
| 920 | Number of Music Playlists | Hard |
| 931 | Minimum Falling Path Sum | Medium |
| 935 | Knight Dialer | Medium |
| 938 | Range Sum of BST | Easy |
| 948 | Bag of Tokens | Medium |
| 950 | Reveal Cards In Increasing Order | Medium |
| 959 | Regions Cut By Slashes | Medium |
| 967 | Numbers With Same Consecutive Differences | Medium |
| 980 | Unique Paths III | Hard |
| 984 | String Without AAA or BBB | Medium |
| 997 | Find the Town Judge | Easy |
| 998 | Maximum Binary Tree II | Medium |