package basics;

/* following is a simple encryption class of input string or int and it will be rotated */

import java.io.*;

public class rotate13 {

public static void main(String[] args) throws IOException {

BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

for(;;) {

System.out.print("> ");

String line = in.readLine();

if(( line == null) || line.equals("quit"))

break;

StringBuffer buf = new StringBuffer(line);

for(int i = 0; i < buf.length(); i++)

buf.setCharAt(i, rot13(buf.charAt(i)));

System.out.println(buf);

}

}

public static char rot13(char c) {

if((c >= 'A') && (c <= 'Z')) {

c += 13;

if (c > 'Z') c -= 26;

}

if ((c >= 'a') && (c <= 'z')) {

c += 13;

if (c > 'z') c-= 26;

}

return c;

}

}