| 0504 | Base 7 LeetCode XXXX Math | Easy | | |
| 0405 | Convert a Number to Hexadecimal LeetCode XXXX Bit Manipulation, Math | Easy | | |
| 0190 | Reverse Bits LeetCode XXXX Bit Manipulation, Divide and Conquer | Easy | | |
| 1009 | Complement of Base 10 Integer LeetCode XXXX Bit Manipulation | Easy | | |
| 0191 | Number of 1 Bits LeetCode XXXX Bit Manipulation, Divide and Conquer | Easy | | |
| 0371 | Sum of Two Integers LeetCode XXXX Bit Manipulation, Math | Medium | | |
| 0089 | Gray Code LeetCode XXXX Bit Manipulation, Math, Backtracking | Medium | | |
| 0201 | Bitwise AND of Numbers Range LeetCode XXXX Bit Manipulation | Medium | | |
| 0338 | Counting Bits LeetCode XXXX Bit Manipulation, Dynamic Programming | Easy | | |
| 0136 | Single Number LeetCode XXXX Bit Manipulation, Array | Easy | | |
| 0137 | Single Number II LeetCode XXXX Bit Manipulation, Array | Medium | | |
| 0260 | Single Number III LeetCode XXXX Bit Manipulation, Array | Medium | | |
| 0268 | Missing Number LeetCode XXXX Bit Manipulation, Array, Hash Table, Math, Binary Search, Sorting | Easy | | |
| 1349 | Maximum Students Taking Exam LeetCode XXXX Bit Manipulation, Array, Dynamic Programming, State Compression, Matrix | Hard | | |
| 0645 | Set Mismatch | | Bit Manipulation, Array, Hash Table, Sorting | Easy |
| 0078 | Subsets LeetCode XXXX Bit Manipulation, Array, Backtracking | Medium | | |
| 0090 | Subsets II LeetCode XXXX Bit Manipulation, Array, Backtracking | Medium | | |