设计一个randomValue值的比较器，生成一副牌后用此比较器洗牌，然后输出洗好的整副牌。

Posted 2021-07-18 Pistachiout

2.现有扑克牌类设计一个此类对randomValue值的比较器，生成一副牌后用此比较器洗牌，然后输出洗好的整副牌。

设计对rank值的比较器，然后对整副牌进行排序输出，观察效果。

import java.util.*;
public class Card implements Comparable<Card>{
	char suit;
	char rank;
	double randomValue;
	Card(char aSuit,char aRank)
	{
		suit=aSuit;
		rank=aRank;
		randomValue=Math.random();
	}
	void dispaly()
	{		System.out.print( Character.toString(suit)+Character.toString(rank)+' ');
	}
	public int compareTo(Card card)
	{
		 return this.randomValue>card.randomValue?1:(this.randomValue<card.randomValue?-1:0);
	}
	
}
class CompareRank implements Comparator<Card>
{
	public int compare(Card a,Card b)
	{
		return a.rank>b.rank?1:(a.rank<b.rank?-1:0);
	}
}
import java.util.*;
public class CardSort {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		char[] suits= {'梅','方','桃','心'};
		char[] values= {'A','2','3','4','5','6','7','8','9','T','J','Q','K'};
		List<Card> cards=new LinkedList<Card>();
		for(int i=0;i<13;i++)
		{ for(int j=0;j<4;j++)
		  { cards.add(new Card(suits[j],values[i]));
		  }
		}
		cards.add(new Card('小','鬼'));
		cards.add(new Card('大','鬼'));
		Collections.sort(cards);
		for(int i=0;i<54;i++)
		{cards.get(i).dispaly();	
		}
		System.out.println();
		Collections.sort(cards,new CompareRank());
		for(int i=0;i<54;i++)
		{cards.get(i).dispaly();	
		}
	}
}