随机出题程序

package 编题程序;import java.util.Random;import java.util.Scanner;public class 编题程xu {                    public static void main(String args[]) {         System.out.println("请输入一页的题目数量:");            Scanner input = new Scanner(System.in);            int n = input.nextInt();            int sum=1;            System.out.println("第"+sum+"份");            System.out.println("-----------------");         for(int i = 0 ; i < n;i++) {         int a = new Random().nextInt(100);//随机数a            int b = new Random().nextInt(100);//随机数b            int suijifu = new Random().nextInt(4);//随机运算符     String symbol=" ";        switch(suijifu) {        case(0):          symbol = "+";break;        case(1):          symbol = "-";break;        case(2):          symbol ="×";break;        case(3):         {  if(b==0) symbol = "+";            if(a%b!=0) symbol = "-";            if(a%b==0)symbol = "÷";        }        break;        }               System.out.println(a+" "+symbol+" "+b+"=");     }         System.out.println("-----------------");         sum++;  }}

转载于:https://www.cnblogs.com/zjl-0217/p/9753707.html

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