using System;
using System.Collections.Generic;
using System.Text;
namespace Ch10CardLib
{
public enum Suit
{
Club,
Diamond,
Heart,
Spade,
}
public enum Rank
{
Ace = 1,
Deuce,
Three,
Four,
Five,
Six,
Seven,
Eight,
Nine,
Ten,
Jack,
Queen,
King,
}
public class Card
{
public readonly Suit suit;
public readonly Rank rank;
public Card(Suit newSuit,Rank newRank)
{
this.suit = newSuit;
this.rank = newRank;
}
private Card() { }
public override string ToString()
{
return "The " + rank + " of " + suit + "s";
}
}
public class Deck
{
private Card[] cards; //声明类数组
public Deck()
{
cards = new Card[52]; //创建52个对象
for (int suitVal = 0; suitVal < 4; suitVal++)
{
for (int rankVal = 1; rankVal < 14; rankVal++)
{
cards[suitVal * 13 + rankVal - 1] = new Card((Suit)suitVal,(Rank)rankVal); //实例化52个对象，并且通过构造函数给suit和rank赋值，问题来了。。类不是引用类型的吗，这样赋值suit和rank不是都是一样的吗？
}
}
}
public Card GetCard(int cardNum) //这里声明的这个方法是干什么的啊？？不太明白。
{
if (cardNum >= 0 && cardNum <= 51)
return cards[cardNum ]; //这里是返回对象里的ToString方法里的内容吗，因为类是引用类型的，这里只代表了cards[cardNum]的指针，返回的结果不都是一样的吗？怎么都不理解！！！
else
throw (new System.ArgumentOutOfRangeException("cardNum", cardNum, "数字在0-51间"));
}
public void Shuffle()
{
Card[] newDeck = new Card[52]; //声明了52个类数组
bool[] assigned=new bool[52]; //声明了52个bool类型的变量
Random sourceGen = new Random(); //实例化一个随机数对象
for (int i = 0; i < 52; i++)
{
int destCard = 0;
bool foundCard = false; //声明一个bool变量为假
while (foundCard == false) //如果为假就循环
{
destCard = sourceGen.Next(52); //赋一个1-52之间的随机数给destCard
if (assigned[destCard] == false) //前面都没给assigned赋值，这里怎么就出现了个如果为假执行下面的代码那？？？
foundCard = true; //等于真，跳出循环
}
assigned[destCard] = true;
newDeck[destCard] = cards[i];
}
newDeck.CopyTo(cards ,0);
}
}
}
本人属于业余爱好者，可能基础东西搞的不是很清楚，但是真心的喜欢编程，望各位高手多多帮助，谢谢了
