题目：给一个不多于5位的正整数，要求：一、求它是几位数，二、逆序打印出各位数字。
package cn.ls.lanqiao;import java.util.*;public class Test24 {public static void main(String[] args) {Scanner sc = new Scanner(System.in);int n = sc.nextInt();converse(n);/** for (int i = n.length() - 1; i >= 0; i--) { System.out.print(n.charAt(i)); }*/}public static void converse(int n) {String s = Integer.toString(n);System.out.println(n + "是" + s.length() + "位数");char[] ch = s.toCharArray();for (int i = ch.length - 1; i >= 0; i--) {System.out.print(ch[i]);}}
}