package demo;

import java.util.Random;

public class math{

   public static void main(String[] args)

{

String[]operate=new String[]{"+","-","*","/"};

   int []numbes=new int[1000];

   for(int i=1;i<=1000;i++)(number[i-1]=i;

}

Random r=new Random();

for(int i=0;i<300;i++){

System.out.println(nunbers[r.nextlnt(1000)+operate[r.nextlnt(4)]+numbers[r.nextlnt(1000)]+"=");

}

}

}

java实现随机输出300题四则运算