博客

1.

package com.itheima.fiest;
import java.util.*;
public class zuoye3 {
	public static void main(String[] args) {
		Scanner input=new Scanner(System.in);
		System.out.print("请输入一个四位数：");
		int nem=input.nextInt();
		int g=nem%10;
		int s=nem/10%10;
		int b=nem/100%10;
		int q=nem/1000%10;
		int[] arr=new int[4];
		for(int i=0;i<arr.length;i++) {
			switch(i) {
			case 0:
				arr[0]=q;
				break;
			case 1:
				arr[1]=b;
				break;
			case 2:
				arr[2]=s;
				break;
			case 3:
				arr[3]=g;
				break;
			}
			System.out.print(arr[i]+" ");
		}
		
  }
}

2.

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,temp;
		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;
		}
		for(i=0;i<a.length;i++) {
			System.out.print(a[i]+" ");
		}
}
}