小学生算术题java
时间: 2023-11-20 11:54:02 浏览: 117
小学生算术题Java程序可以通过随机生成数字和运算符来实现。可以使用Java中的Random类来生成随机数,使用switch语句来随机生成运算符。在生成数字时,可以使用nextInt()方法来生成指定范围内的随机整数。在生成除法运算时,可以使用do-while循环来确保两个整数能够整除。以下是一个简单的小学生算术题Java程序的实现方法:
```java
import java.util.Random;
public class Arithmetic {
public static void main(String[] args) {
Random random = new Random();
int num1, num2, result;
char operator;
do {
num1 = random.nextInt(100) + 1;
num2 = random.nextInt(100) + 1;
operator = getRandomOperator();
} while (!isValid(num1, num2, operator));
result = calculate(num1, num2, operator);
System.out.println(num1 + " " + operator + " " + num2 + " = " + result);
}
public static char getRandomOperator() {
Random random = new Random();
int n = random.nextInt(4);
switch (n) {
case 0:
return '+';
case 1:
return '-';
case 2:
return '*';
default:
return '/';
}
}
public static boolean isValid(int num1, int num2, char operator) {
if (operator == '/' && num1 % num2 != 0) {
return false;
}
if (num1 < 1 || num1 > 100 || num2 < 1 || num2 > 100) {
return false;
}
return true;
}
public static int calculate(int num1, int num2, char operator) {
switch (operator) {
case '+':
return num1 + num2;
case '-':
return num1 - num2;
case '*':
return num1 * num2;
default:
return num1 / num2; }
}
}
```
阅读全文