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C#實現洗牌算法

2020-01-24 02:07:22
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C#洗牌算法,簡單演示!

算法一、

/// <summary>/// 洗牌算法/// </summary>private void test(){ int[] iCards = new int[54]; for (int i = 0; i < iCards.Length; i++) { iCards[i] = i + 1; } // Random rand = new Random(); int iTarget = 0, iCardTemp = 0; for (int i = 0; i < iCards.Length; i++) { iTarget = rand.Next(0, iCards.Length); iCardTemp = iCards[i]; iCards[i] = iCards[iTarget]; iCards[iTarget] = iCardTemp; }  for (int i = 0; i < iCards.Length; i++) { Response.Write("第" + (i + 1) + "張牌是:" + iCards[i] + "<br/>"); }}

算法二、

public void Shuffle()  {      int[] cards = new int[54] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53 };   //創建一個臨時的撲克牌組   int[] newCards = new Card[54];   //bool變量數組   bool[] assigned = new bool[54];   Random sourceGen = new Random();   for (int i = 0; i < 54; i++)   {    int destCard = 0;     //隨機數保存空間    bool foundCard = false;    while (foundCard == false)    {     //生成一個0到54之間的隨機數     destCard = sourceGen.Next(54);     if (assigned[destCard] == false)     {      foundCard = true;     }    }    assigned[destCard] = true;    newcards[destCard] = cards[i];   }

算法三、

public void Reshuffle()  {   int[] cards = new int[54] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53 };   Random ram = new Random();   int currentIndex;   int tempValue;   for (int i = 0; i < 54; i++)   {    currentIndex = ram.Next(0, 54 - i);    tempValue = cards[currentIndex];    cards[currentIndex] = cards[53 - i];    cards[53 - i] = tempValue;   }  }15

相比一下,第三個更簡單,更高效!

以上就是本文給大家分享的洗牌算法的全部內容了,希望大家能夠喜歡。

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