C# 洗牌算法

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 洗扑克牌
{
class Program
{
static void Main(string[] args)
{

string[] cardColor = { "黑桃", "方块", "梅花", "红桃" };
Card[] cardList = new Card[52];
int colorIndex = 0;
int tempValue = 0;
for (int i = 0; i < cardList.Length; i++)
{
if (i % 13 == 0 && i != 0)
{
colorIndex++;
}

Char a = 'A';
tempValue = i % 13;
switch (tempValue)
{
case 0:
a = 'A';
break;
case 9:
a = '0';
break;
case 10:
a = 'J';
break;
case 11:
a = 'Q';
break;
case 12:
a = 'K';
break;
default:
a = (Char)(tempValue + (int)'1');
break;
}

cardList[i] = new Card()
{
value = a,
color = cardColor[colorIndex]
};
}

Console.WriteLine("洗牌之前:");
ShowCard(cardList);

ShuffleCard(cardList);

Console.WriteLine("\n\n洗牌之后:");
ShowCard(cardList);

Console.ReadLine();
}

static void ShuffleCard(Card[] cardList)
{
Random random = new Random();
int tempIndex = 0;
Card temp = null;
for (int i = 0; i < 52; i++)
{
tempIndex = random.Next(52);
temp = cardList[tempIndex];
cardList[tempIndex] = cardList[i];
cardList[i] = temp;
}
}

static void ShowCard(Card [] cardList)
{
for (int i = 0; i < cardList.Length; i++)
{
if (i % 13 == 0 && i != 0)
{
Console.WriteLine("\n");
}

Console.Write(cardList[i].color + "" + cardList[i].value + " ");
}
}

}

public class Card
{
public char value;
public string color;
}

}