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  1. Prepare
  2. Algorithms
  3. Strings
  4. Caesar Cipher
  5. Discussions

Caesar Cipher

  • BALYAM_muralidh2
     + 0 comments
    static String caesarCipher(String s, int k) {
        // Complete this function
        String newString = "";
          int carr[] = new int[s.length()];
        for(int i = 0;i<s.length();i++){
            if((int)s.charAt(i)>=65 && (int)s.charAt(i)<=90){
                carr[i] = ((int)s.charAt(i));
               if((carr[i]+(k%26))>90){
                newString+=(char)(carr[i]-90+64+(k%26));
             } 
                 else if((carr[i]+(k%26))<=90){
                     newString+=(char)(carr[i]+(k%26));
                                                               
                         }}   
             if((int)s.charAt(i)>=97 && (int)s.charAt(i)<=122){
                carr[i] = ((int)s.charAt(i));
               if((carr[i]+(k%26))>122){
                newString+=(char)(carr[i]-122+96+(k%26));
             } 
                 else if((carr[i]+(k%26))<=122){
                     newString+=(char)(carr[i]+(k%26));
                                                               
                         }}
            if((int)s.charAt(i)>=91&&(int)s.charAt(i)<=96){
                carr[i] = (int)s.charAt(i);
                newString+=(char)(carr[i]);
            }
             if((int)s.charAt(i)<65 || (int)s.charAt(i)>122){
                carr[i] = (int)s.charAt(i);
                 newString+=(char)(carr[i]);
            }
                 
        
        }
        return newString;
}

    Java code