| Id | Questions | Difficulty |
|---|---|---|
| 1 | Reverse words in a given string | Easy |
| 2 | Longest Common Prefix | Easy |
| 3 | Roman Number to Integer | Easy |
| 4 | Next higher palindrome number using the same set of digits | Medium |
| 5 | Length of longest prefix suffix | Medium |
| 6 | Smallest window in string containing all characters | Medium |
| 7 | Validate an IP address | Medium |
| 8 | Implement Atoi | Medium |
| 9 | Look and say Pattern | Medium |
| 10 | Longest K unique characters substring | Medium |