我试图写一个代码,其中列出的一副扑克牌的内容的项目,问的人有多少次想洗牌,然后洗牌他们。 它的使用方法创建使用System.Random类两个随机整数。
这些都是我的课:
Program.cs中:
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Deck mydeck = new Deck();
foreach (Card c in mydeck.Cards)
{
Console.WriteLine(c);
}
Console.WriteLine("How Many Times Do You Want To Shuffle?");
}
}
}
Deck.cs:
namespace ConsoleApplication1
{
class Deck
{
Card[] cards = new Card[52];
string[] numbers = new string[] { "2", "3", "4", "5", "6", "7", "8", "9", "J", "Q", "K" };
public Deck()
{
int i = 0;
foreach(string s in numbers)
{
cards[i] = new Card(Suits.Clubs, s);
i++;
}
foreach (string s in numbers)
{
cards[i] = new Card(Suits.Spades, s);
i++;
}
foreach (string s in numbers)
{
cards[i] = new Card(Suits.Hearts, s);
i++;
}
foreach (string s in numbers)
{
cards[i] = new Card(Suits.Diamonds, s);
i++;
}
}
public Card[] Cards
{
get
{
return cards;
}
}
}
}
Enums.cs:
namespace ConsoleApplication1
{
enum Suits
{
Hearts,
Diamonds,
Spades,
Clubs
}
}
Card.cs:
namespace ConsoleApplication1
{
class Card
{
protected Suits suit;
protected string cardvalue;
public Card()
{
}
public Card(Suits suit2, string cardvalue2)
{
suit = suit2;
cardvalue = cardvalue2;
}
public override string ToString()
{
return string.Format("{0} of {1}", cardvalue, suit);
}
}
}
请告诉我怎么做的人想要,然后列出洗好的牌出牌洗牌一样多。
Answer 1:
使用费雪耶茨洗牌 。
C#代码应该是这个样子:
static public class FisherYates
{
static Random r = new Random();
// Based on Java code from wikipedia:
// http://en.wikipedia.org/wiki/Fisher-Yates_shuffle
static public void Shuffle(int[] deck)
{
for (int n = deck.Length - 1; n > 0; --n)
{
int k = r.Next(n+1);
int temp = deck[n];
deck[n] = deck[k];
deck[k] = temp;
}
}
}
Answer 2:
洗牌一副扑克牌的东西,起初似乎微不足道,但通常大多数人拿出的算法不正确。
杰夫阿特伍德( 编码恐怖 )写了关于这个问题的几个很好的文章:
http://www.codinghorror.com/blog/archives/001008.html
http://www.codinghorror.com/blog/archives/001015.html
(尤其是第二个是一个必须读取)
Answer 3:
我想,这是你可能只是得到太多的抽象赶上了一个案例。
在软件洗牌一副牌是随机顺序提供甲板给用户的问题。 这实际上并不需要你提前洗牌它们。
INIT您的甲板上。 (I通常使用的数从1到52来表示卡和mathmatically计算哪个卡)。
- 通过使用随机数发生器挑一张牌出的菱扑克牌的新政一卡。
- 交换与一个在甲板结束该卡。
- 递减指着甲板上的最后一个计数器,除去从甲板卡。
- 转到步骤1,直到你完成绘图卡。
编辑 :而一般来说,如果你有一个好的随机数发生器没有被“洗牌”也多次获得。
这应该使用还有你的数据结构是可能的。 你只需要添加一个“画”的方法和成员变量来跟踪甲板的结束。 如果你是在实际执行的“洗牌”提前一意孤行,然后你的教授是个混蛋,B,任何时候你画52张甲板将被洗牌。 一旦你画出所有的卡,你需要提供一个“DeckEmpty”的方法,并且方法重置甲板的结束再次包括所有卡。
Answer 4:
要正确地将洗牌,你不应该只使用Random类甲板,种子只有2 ^ 32,这意味着你的Random对象可以给你2 ^ 32(假定)不同的顺序,其中有52! agencing现实生活中的甲板(阶乘52)的方式。
我使用2个GUID来创建随机数据的32字节 - > 8种4字节的,我洗牌与放入系统8个不同的种子
然后通过种子我得到一定数量的卡[5,5,6,6,6,7,8,9]
这里是我使用的代码
public void Shuffle(Guid guid1, Guid guid2)
{
int[] cardsToGet = new int[] { 5, 5, 6, 6, 6, 7, 8, 9 };
byte[] b1 = guid1.ToByteArray();
byte[] b2 = guid2.ToByteArray();
byte[] all = new byte[b1.Length + b2.Length];
Array.Copy(b1, all, b1.Length);
Array.Copy(b2, 0, all, b1.Length, b2.Length);
List<Card> cards = new List<Card>(this);
Clear();
for (int c = 0; c < cardsToGet.Length; c++)
{
int seed = BitConverter.ToInt32(all, c * 4);
Random random = new Random(seed);
for (int d = 0; d < cardsToGet[c]; d++)
{
int index = random.Next(cards.Count);
Add(cards[index]);
cards.RemoveAt(index);
}
}
}
Answer 5:
你可能洗牌的工作,但它不是真的有效,不逼真。 你应该试试这种方法:
//The shuffle goes like this: you take a portion of the deck, then put them in random places
private void Shuffle()
{
int length = DeckofCards.Count;
int level = 20; //number of shuffle iterations
List<Card> Shuffleing; //the part of the deck were putting back
Random rnd = new Random();
int PickedCount, BackPortion; //the last used random number
for (int _i = 0; _i < level; _i++)
{
PickedCount = rnd.Next(10, 30); //number of cards we pick out
Shuffleing = DeckofCards.GetRange(0, PickedCount);
DeckofCards.RemoveRange(0, PickedCount);
while (Shuffleing.Count != 0)
{
PickedCount = rnd.Next(10, DeckofCards.Count - 1); //where we place a range of cards
BackPortion = rnd.Next(1, Shuffleing.Count / 3 + 1); //the number of cards we but back in one step
DeckofCards.InsertRange(PickedCount, Shuffleing.GetRange(0, BackPortion)); //instering a range of cards
Shuffleing.RemoveRange(0, BackPortion); //we remove what we just placed back
}
}
}
这样,你可能会得到较少的迭代更加栩栩如生洗牌
Answer 6:
洗牌应该以这种方式工作:
你把两个随机卡在甲板(在甲板上证指数是随机数)和两张卡交换位置。 例如采用索引2和卡卡在指数9和让他们换地方了。
并且可以重复一定次数。
该算法应该是这个样子:
int firstNum = rnd.Next(52);
int secondNum = rnd.Next(52);
Card tempCard = MyCards[firstNum];
MyCards[firstNum] = MyCards[secondNum];
MyCards[secondNum] = tempCard;
Answer 7:
总的来说,我会说,看看每个甲板包含卡对象的数组对象,其中每个Card对象的每个包含一个值和套房INT属性,它可以应用到值和套房的枚举,收集指定的版本每卡片的类型所使用。 (这将允许这段代码更加灵活,允许更容易比较值3 <11(插孔)!〜)你的风格会为学校项目的工作,我刚开OCD吧!
class Card
{
public int value
{ get; set; }
public int suite
{ get; set; }
}
abstract class Deck
{
public Card[] cards
{ get; set; }
public void ShuffleCards(int timesToShuffle)
{
Card temp;
Random random = new Random();
// int timesToShuffle = random.Next(300, 600); #Had it setup for random shuffle
int cardToShuffle1, cardToShuffle2;
for (int x = 0; x < timesToShuffle; x++)
{
cardToShuffle1 = random.Next(this.cards.Length);
cardToShuffle2 = random.Next(this.cards.Length);
temp = this.cards[cardToShuffle1];
this.cards[cardToShuffle1] = this.cards[cardToShuffle2];
this.cards[cardToShuffle2] = temp;
}
}
}
这是假设你使用一个底部平台类,那么它继承你想要甲板型(使它所以你可以应用此相同的代码来乌诺甲板或什么都)代号为普通型甲板类的。
class NormalDeck : Deck
{
// This would go in the NormalGame class to apply the enumerators to the values as a cipher.
// Need int values for logic reasons (easier to work with numbers than J or K !!!
// Also allows for most other methods to work with other deck<Type> (ex: Uno, Go Fish, Normal cards)
public enum Suites
{
Hearts,
Diamonds,
Spades,
Clover
};
// Same comment as above.
public enum Values
{ Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King };
public void NewNormalDeck()
{
// Clear the deck of cards
if (this.cards != null)
{
Array.Clear(this.cards, 0, this.cards.Length);
}
//Set Value to length of Normal deck of Cards without Jokers
cards = new Card[52];
// to keep count of which card we are.
int curNumofCards = 0;
// Cycle through all of the suites listed in "suites" then all the values of that suite
for (int x = 0; x < Enum.GetValues(typeof(Suites)).GetLength(0); x++)
{
for (int y = 0; y < Enum.GetValues(typeof(Values)).GetLength(0); y++)
{
Card newCard = new Card();
newCard.suite = x;
newCard.value = y;
this.cards[curNumofCards] = newCard;
curNumofCards++;
}
}
}
}
Answer 8:
我做了一个包含7张牌的程序,然后洗牌,我希望采取以帮助他们。
类节目{
static void Main(string[] args)
{
Random random = new Random();
var cards = new List<string>();
//CARDS VECRTOR
String[] listas = new String[] { "Card 1", "Card 2", "Card 3", "Card 4", "Card 5", "Card 6", "Card 7"};
for (int i = 0; i<= cards.Count; i++)
{
int number = random.Next(0, 7); //Random number 0--->7
for (int j = 0; j <=6; j++)
{
if (cards.Contains(listas[number])) // NO REPEAT SHUFFLE
{
number = random.Next(0, 7); //AGAIN RANDOM
}
else
{
cards.Add(listas[number]); //ADD CARD
}
}
}
Console.WriteLine(" LIST CARDS");
foreach (var card in cards)
{
Console.Write(card + " ,");
}
Console.WriteLine("Total Cards: "+cards.Count);
//REMOVE
for (int k = 0; k <=6; k++)
{
// salmons.RemoveAt(k);
Console.WriteLine("I take the card: "+cards.ElementAt(k));
cards.RemoveAt(k); //REMOVE CARD
cards.Insert(k,"Card Taken"); //REPLACE INDEX
foreach (var card in cards)
{
Console.Write(card + " " + "\n");
}
}
Console.Read(); //just pause
}
}
Answer 9:
static void Shuffle(List<int> cards)
{
Console.WriteLine("");
Console.WriteLine("Shuffling");
Console.WriteLine("---------");
cards = cards.OrderBy(x => Guid.NewGuid()).ToList();
foreach (var card in cards)
{
Console.WriteLine(card.ToString());
}
}
文章来源: Card Shuffling in C#