String

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)