java基础之用linkedlist存储一副牌，完成洗牌功能

import java.awt.List;import java.util.LinkedList;import java.util.Random;//用linklist存储一副牌，完成洗牌功能class card extends LinkedList{//可以不用继承String color;String num;public card(String color,String num){this.color=color;this.num=num;}//参数为数组的构造方法，此题用集合更方便，但是就是任性@Overridepublic String toString() {return this.color+this.num;//对tostring进行重写}}public class demo13 {public static void main(String[] args){String [] colors={"黑桃","红桃","梅花","方块"};String [] nums={"2","3","4","5","6","7","8","9","10","J","Q","K","A"};LinkedList list=new LinkedList();Random r=new Random();//card c= new card(colors,nums,colors.length,nums.length);for(int i=0;i<colors.length;i++){for(int j=0;j<nums.length;j++){String d1=colors[i];//一个一个赋值String n=nums[j];card c= new card(d1,n); list.offer(c);//入队 /* * {int size=list.size();for(int a=0;a<size;a++){System.out.println( list.poll());//出队}//System.out.println( list.poll()); * * 生成的正序扑克牌 * * * * */}}//随机洗牌Object[] d=list.toArray();//转换为数组，保存在数组中System.out.println( d.length);list.removeAll(list);while(list.size()<=52){int l=0;l=r.nextInt(d.length);list.offer(d[l]);}{int size=list.size();for(int a=0;a<size;a++){System.out.println( list.poll());//出队}//System.out.println( list.poll());}}}