四则运算程序

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)]+"=");

}

}