小学数学老师要求程序能自动生成300道四则运算题！！！！

public class Main {
    public static void main(String[] ages) {
        String[] operate = new String[]{"+", "-", "×", "÷"};
        int[] numbers = new int[100];
        for (int i = 1; i <= 100; i++) {
            numbers[i - 1] = i;
        }
        Random r = new Random();
        for (int i = 0; i < 300; i++){
            System.out.println(numbers[r.nextInt(100)] + operate[r.nextInt(4)] + numbers[r.nextInt(100)] + "=");
        }
    }
}