| 题号 | 题目链接 | 说明 |
| 78 | Subsets | |
| 90 | Subsets II | |
| 77 | Combinations | |
| 39 | Combination Sum | |
| 40 | Combination Sum II | |
| 216 | Combination Sum III | |
| 377 | Combination Sum IV | Dynamic Programming |
| 254 | Factor Combinations | |
| 46 | Permutations | |
| 47 | Permutations II | |
| 31 | Next Permutation | String |
| 60 | Permutation Sequence | String |
| 291 | Word Pattern II | |
| 17 | Letter Combinations of a Phone Number | |
| 320 | Generalized Abbreviation | |
| 93 | Restore IP Addresses | 很少考 |
| 282 | Expression Add Operators | |
| 140 | Word Break II | |
| 351 | Android Unlock Patterns |