【牛客网】【JAVA】华为机试刷题（二）

• 11.【题目描述】- 【数字颠倒】

【答案参考】- 提交成功

import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner in  = new Scanner(System.in);
        int num = in.nextInt();
        StringBuilder sbd = new StringBuilder().append(num);
        StringBuilder reverse = sbd.reverse();
        System.out.println(reverse);
    }
}

知识点：

StringBuilder、StringBuffer的方法append()和reverse()