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

package girmmaproject;

import java.util.Scanner;
public class Q10 {

    private static Scanner input=new Scanner(System.in);
    public static void main(String[] args) {

        System.out.println("Enter 'e' for encryption and 'd' for decryption: ");
        String st=input.nextLine();
        if(st.equalsIgnoreCase("e")){
            encryptData();
        }
        if(st.equalsIgnoreCase("d")){
            decrypt();
        }
        System.out.println("");
    }

    public static void encryptData(){

        System.out.println("Enter the four digit integer one by one: ");
        int a[]=new int[4];
        for(int i=0;i<=3;i++){
            a[i]=input.nextInt();
        }
        System.out.print("Your four digit number: ");
        
        for(int i=0;i<=3;i++){
            System.out.print(a[i]+" ");
        }
        //System.out.println("\n~~~~~~~~~~~~~~~~~~~~~~~~~");
        for(int i=0;i<=3;i++){
            a[i]=(a[i]+7)%10;
            //System.out.print(a[i]);
        }
         System.out.println();
        int temp1,temp2;
        //Swapping
            temp1=a[0];
            a[0]=a[2];
            a[2]=temp1;

            temp2=a[1];
            a[1]=a[3];
            a[3]=temp2;
         System.out.print("Encrypted integer: ");
         for(int i=0;i<=3;i++)
             System.out.print(a[i]+" ");

    }

    public static void decrypt(){
        
    }


}