洗纸牌算法

import java.util.Random;

class Card
{
int Suit;							//颜色
char Number;							//卡的数量
}

public class PokeShow {
static Card[] OneCard=new Card[52];		    	//保存每张扑克的花色、数字

static void ShowCard() 							//显示扑克牌
{
int i, j;
int sign=0;
String s="";

for (i = 0, j = 0; i < 52; i++, j++)
{
if (j % 13==0)
{
System.out.print("\n");
}
switch(OneCard[i].Suit)					//显示花色符号
{
case 1:
s="黑桃";
sign=3;
break;
case 2:
s="红桃";
sign=4;
break;
case 3:
s="梅花";
sign=5;
break;
case 4:
s="方块";
sign=6;
break;
default:
;
}
System.out.printf("  "+s+OneCard[i].Number);	//输出显示
}
System.out.print("\n");
}

static void Shuffle()								//算法
{
int i,j,temp;
int suit;

Card tempcard=new Card();

suit=0;
for (i = 0; i < 52; i++)						//生成52张牌
{
if (i % 13 == 0)
{
suit++;							//改变花色
}
Card t=new Card();
t.Suit = suit;					//保存花色
temp = i % 13;
switch(temp)							//特殊值处理
{
case 0:
t.Number = 'A';
break;
case 9:
t.Number = '0';
break;
case 10:
t.Number = 'J';
break;
case 11:
t.Number = 'Q';
break;
case 12:
t.Number = 'K';
break;
default:
t.Number =(char)(temp + '1');
}
OneCard[i]=t;

}
System.out.printf("一付新牌的初始排列例如以下:\n");

ShowCard();

Random r=new Random();					//随机种子
for (i = 0; i < 52; i++)
{
j = r.nextInt(52);						//随机换牌
tempcard = OneCard[j];
OneCard[j] = OneCard[i];
OneCard[i] = tempcard;
}
}
public static void main(String[] args) {

Shuffle();								//拖曳
System.out.print("\n洗牌的安排，比如下面的后:\n");
ShowCard();							//显示新的授权协议

}

}