算法基础-打印逆序数字

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package day2;

import java.util.Scanner;

public class D打印逆序数字 {
	
	private static int fun(int n){
		int a[] = new int[20];
		int i = 0;
		while(n!=0){
			a[i++] = n%10;
			n = n/10;
		}
		for(int j=0;j<i;j++){
			System.out.print(a[j]);
		}
		return 0;
	}
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int n = in.nextInt();
		fun(n);
	}
}