| 1 | Text Justification Problem | Easy |
| 2 | Print All Possible Valid Combinations Of Parenthesis of Given ‘N’ | Expert |
| 3 | Generate All Strings of n bits. | Medium |
| 4 | Print All The Permutations Of a String | Expert |
| 5 | Check if one string is Rotation of another string | Easy |
| 6 | String Compression using count of repeated characters — Run Length Encoding | Easy |
| 7 | Replace all spaces in a String with ‘%20′ | Medium |
| 8 | Find Whether Two Strings are Permutation of each other | Medium |
| 9 | Find The Longest Sequence Of Prefix Shared By All The Words In A String | Expert |
| 10 | Find Whether Given Sequence of parentheses are well formed. | Medium |
