随机生成的300道四则运算

随机生成的300道四则运算

import java.util.Random;

public class Gao {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        
        char f[] = {'+','-','*','/'}; 
          int max =100; 
          for(int i=0;i<300;i++){
          Random random= new Random();
          int a = random.nextInt(max+1);
          int b = random.nextInt(max+1);
          int c = random.nextInt(4);
          int result = -1;
          switch (c){
          case 0:
           result = a+b;
           break;
          case 1:
           result = a-b;
           break;
          case 2:
           result = a*b;
           break;
          case 3:
           while (true){
            if (a!=0&&b!=0&&a%b==0){
             result = a/b;
             break;
            }else{
              a = random.nextInt(max+1);
              b = random.nextInt(max+1);
            }
           }
           break;
           default:
           break;
          }
          System.out.println(""+a+f[c]+b+"=");
         }
        }

    }