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  1. Caesar Cipher
  2. Discussions

Caesar Cipher

  • WeiAugust19
     + 0 comments

    Java solution:

    public static String caesarCipher(String s, int k) {

  char[] chars = s.toCharArray();
  for(int i=0; i<chars.length;i++){ 
      if (chars[i]-'a'>=0 && chars[i]-'a'<26) 
          chars[i]=(char)((chars[i]-'a'+k)%26+'a');                      
      else if (chars[i]-'A'>=0 && chars[i]-'A'<26) 
          chars[i]=(char)((chars[i]-'A'+k)%26+'A');          

  }
  return String.valueOf(chars);
}