300道四则运算题

package com.example.huangxi.math;

import java.util.Random;

/**
 * Created by huangxi on 2017/3/12.
 */
public class math {
    public static void main(String[] args)
    {
        String[] operate=new String[]{"+","-","*","/"};
        int[] numbers=new int[1000];
        for (int i=1;i<=1000;i++)
        {
            numbers[i-1]=i;
        }
        Random r=new Random();
        for (int i=0;i<300;i++){
            System.out.println(numbers[r.nextInt(1000)]+operate[r.nextInt(4)]+numbers[r.nextInt(1000)]+"=");
        }

    }
}