摘要：
import java.util.Random;public class math { public static void main(String[] args) { String[] operate=new String[]{"+","-","×","÷"}; int[] numbers=new 阅读全文
摘要：
package demo;import java.util.Random;public class math { public static void main(String[] args) { String[] operate=new String[]{"+","-","×","÷"}; int[ 阅读全文