题解 | #数字翻转#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextInt()) { // 注意 while 处理多个 case
            int a = in.nextInt();
            int b = in.nextInt();
            System.out.println(rev(rev(a)+rev(b)));
        }
    }

    public static int rev(int x){
        while(x%10==0&&x>0){
            x = x/10;
        }
        StringBuilder str = new StringBuilder(x+"");
        String result = str.reverse().toString();
        return Integer.parseInt(result);
    }
    
}