import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class KrypteraFilen {


    /* kan användas för att kryptera/dekryptera en sträng...*/
    public static String rot13(String s) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            if       (c >= 'a' && c <= 'm') c += 13;
            else if  (c >= 'n' && c <= 'z') c -= 13;
            else if  (c >= 'A' && c <= 'M') c += 13;
            else if  (c >= 'A' && c <= 'Z') c -= 13;
            sb.append(c);
        }
        return sb.toString();
    }


    public static void main(String[] args) {
        try {
            FileReader fr = new FileReader(new File("ordlista.txt"));
            BufferedReader br = new BufferedReader(fr);

            File out = new File("krypterad.txt");
            out.createNewFile();
            BufferedWriter bw = new BufferedWriter(new FileWriter(out,true));
            String tmp = br.readLine();

            while (tmp != null) {
                bw.write(rot13(tmp) + '\n');
                bw.flush();
                tmp = br.readLine();
            }

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

        catch (IOException e) {
            e.printStackTrace();
        }
    }

}