Problems listed in the order of difficulty. * denotes in top interview questions.
Easy
- 007 Reverse Integer * (note)
- 008 String to Integer (atoi) * (note)
- 014 Longest Common Prefix * (note)
- 028 Implement strStr() * (note)
- 038 Count and Say * (note)
- 125 Valid Palindrome * (note)
- 242 Valid Anagram * (note)
- 344 Reverse String * (note)
- 387 First Unique Character in a String * (note)