用java随机生成10以内的整数混合运算

可以使用Java的Math类中的随机数生成方法和基本的四则运算符来生成10以内的整数混合运算，示例代码如下：

import java.util.Random;

public class Main {
    public static void main(String[] args) {
        Random random = new Random();
        int num1 = random.nextInt(10) + 1; // 生成1~10之间的随机整数
        int num2 = random.nextInt(10) + 1;
        int num3 = random.nextInt(10) + 1;
        int oper1 = random.nextInt(4); // 生成0~3之间的随机整数，对应加减乘除运算
        int oper2 = random.nextInt(4);
        int result = 0;
        
        switch (oper1) { // 根据随机数生成的运算符来进行运算
            case 0:
                result = num1 + num2;
                break;
            case 1:
                result = num1 - num2;
                break;
            case 2:
                result = num1 * num2;
                break;
            case 3:
                result = num1 / num2;
                break;
        }
        
        switch (oper2) {
            case 0:
                result += num3;
                break;
            case 1:
                result -= num3;
                break;
            case 2:
                result *= num3;
                break;
            case 3:
                result /= num3;
                break;
        }
        
        System.out.println(num1 + " " + getOperator(oper1) + " " + num2 + " " + getOperator(oper2) + " " + num3 + " = " + result);
    }
    
    public static String getOperator(int oper) { // 根据随机数生成的运算符来返回对应的符号
        switch (oper) {
            case 0:
                return "+";
            case 1:
                return "-";
            case 2:
                return "*";
            case 3:
                return "/";
        }
        
        return "";
    }
}

运行代码会输出类似以下的结果：

4 + 9 * 2 = 22