file5.java

学习java编程的好程序

import java.util.*;
///创建一个随机类对象rnd
///创建一个字符串类型的数组card
///通过循环语句，不断的从数组中取出两个对象，对其进行比较和排序
 public class file5
 {  
  public static void main(String[] args)
  {
    try
    {
    Random rnd=new Random();
    String[] card={"方块1","方块2","方块3","方块4","方块5","方块6","方块7","方块8","方块9"};
    String str;
    int x,y;
    for(int i=0;i<100;i++)
    {
      x=rnd.nextInt(9);
      y=rnd.nextInt(9);
      str=card[x];
      card[x]=card[y];
      card[y]=str;
    
  } 
    for(int i=0;i<9;i++)
    {
      System.out.println(card[i]);
    }
    }
      catch(Exception e){}
  }
}