| 494 | Target Sum | Medium |
| 526 | Beautiful Arrangement | Medium |
| 638 | Shopping Offers | Medium |
| 679 | 24 Game | Hard |
| 691 | Stickers to Spell Word | Hard |
| 698 | Partition to K Equal Sum Subsets | Medium |
| 784 | Letter Case Permutation | Medium |
| 797 | All Paths From Source to Target | Medium |
| 816 | Ambiguous Coordinates | Medium |
| 842 | Split Array into Fibonacci Sequence | Medium |
| 967 | Numbers With Same Consecutive Differences | Medium |
| 980 | Unique Paths III | Hard |
| 996 | Number of Squareful Arrays | Hard |
| 1079 | Letter Tile Possibilities | Medium |
| 1096 | Brace Expansion II | Hard |
| 1219 | Path with Maximum Gold | Medium |
| 1238 | Circular Permutation in Binary Representation | Medium |
| 1239 | Maximum Length of a Concatenated String with Unique Characters | Medium |
| 1240 | Tiling a Rectangle with the Fewest Squares | Hard |
| 1255 | Maximum Score Words Formed by Letters | Hard |
| 1286 | Iterator for Combination | Medium |
| 1307 | Verbal Arithmetic Puzzle | Hard |
| 1337 | The K Weakest Rows in a Matrix | Easy |
| 1342 | Number of Steps to Reduce a Number to Zero | Easy |
| 1415 | The k-th Lexicographical String of All Happy Strings of Length n | Medium |
| 1467 | Probability of a Two Boxes Having The Same Number of Distinct Balls | Hard |
| 1593 | Split a String Into the Max Number of Unique Substrings | Medium |
| 1601 | Maximum Number of Achievable Transfer Requests | Hard |
| 1655 | Distribute Repeating Integers | Hard |
| 1672 | Richest Customer Wealth | Easy |