Java-简单的数组加密

import java.util.*;
public class java02 {
	public static void main(String[] args) {
		Scanner input=new Scanner(System.in);
		int[] a=new int[4];
		int i;
		System.out.print("请输入一个"+a.length+"位数：");
		int num=input.nextInt();
		for(i=0;i<a.length;i++) {
			a[i]=num%10;
			num=num/10;
			System.out.print(a[i]+" ");
		}
		System.out.println(" ");
		for(i=0;i<a.length;i++) {
			a[i]=a[i]+5;
			a[i]=a[i]%10;  //超过10就取个位的数
			System.out.print(a[i]+" ");
		}
		System.out.println(" ");
		for(i=a.length-1;i>=0;i--) {
			System.out.print(a[i]+" ");
		}
}
}