/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package app;

/**
 *
 * @author SC0U7
 */

import java.util.Scanner;
public class app {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
      String pokracovat="ano";
     //Treba zadat text
     Scanner vstup = new Scanner(System.in);
     while (pokracovat.equals("ano"))
     {
     System.out.println("1=Sifrovat\n2=Desifrovat");
     int volba = Integer.parseInt(vstup.nextLine());
     switch(volba)
     {
         case 1:
             System.out.println("Zadaj text pre zašifrovanie: ");
             break;
         case 2:
             System.out.println("Zadaj text pre dešifrovanie: ");
             break;
         default:
         System.out.println("Zadal si zlu moznost!");
         System.exit(0);

     }
     String sprava = vstup.nextLine();
     sprava.trim();
     System.out.println("Zadaj posun (číslo): ");
     // premenne
     int posun=Integer.parseInt(vstup.nextLine());
     String nove=" ";
     int ascii=0;
     // cyklus
     for (char znacik : sprava.toCharArray())
     {
         if (volba==1)
         {
        ascii=(int)znacik+posun;
        nove += String.valueOf((char)ascii);
         }
         else
        {
        ascii=(int)znacik-posun;
        nove += String.valueOf((char)ascii);
        }
     }

     System.out.println(nove);
     System.out.println("Pokracovat [ano/nie]: ");
     pokracovat=vstup.nextLine();
     }
    }

}