JAVA利用Math类中的random()方法产生随机的两个10以内整数

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import java.util.Scanner;
import java.util.Random;

public class Test {
    public static void main(String[] args) {
        int count = 0,sum = 0,score = 0;
        for (int i = 0; i < 5; i++) {
            int x = (int) (10 * Math.random());
            int y = (int) (10 * Math.random());
            sum = x + y;
            System.out.println(x+" + "+y+"= ");
            Scanner in = new Scanner(System.in);
            int result = in.nextInt();
            if (sum == result) {
                count++;
            }
            score = 20 * count; //假设对一题20分
        }
        System.out.println("答对题目数："+count);
        System.out.println("总分："+score);
    }
}

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1 + 0= 
1
6 + 6= 
12
7 + 6= 
13
9 + 5= 
14
4 + 8= 
12
答对题目数：5
总分：100

Process finished with exit code 0

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5 + 5= 
10
0 + 4= 
7
5 + 9= 
14
7 + 4= 
7
0 + 4= 
4
答对题目数：3
总分：60

Process finished with exit code 0