在C＃中為WP7選擇隨機字符串

Question

我正在制作一個WP7應用程序，當用戶點擊圖像時，它會隨機決定他們將獲得什么。

現在，我有以下代碼：

string firstdoor = "";

string seconddoor = "";

string thirddoor = "";

和

string prize1 = "vacation to Hawaii with all expenses covered";

string prize2 = "used glue stick";

string prize3 = "pile of dog dung";

string prize3 = "vacation to Europe with all expenses covered";

string prize3 = "million dollars";

string prize3 = "blank CD";

string prize3 = "temporary tattoo";

string prize3 = "nickel";

string prize3 = "dime";

和

我想做的是將door s隨機分配給prize s。

例如，當用戶點擊圖像時，將dime分配給thirddoor ，將nickel分配給第一扇門，將一million dollars分配給secondoor 。

Answer 1

以下是對我來說最有意義的步驟（不會為您編寫所有代碼）：

1. 將所有獎金字符串放入數組中。

2. 生成介於0和最大獎品數量之間的三個隨機數。

3. 從獎品陣列中為每個門分配每個隨機數的獎品。

4. ...

5. 利潤！

編輯

實際上，這里有一些代碼可以幫助您：

var randomGenerator = new Random();

string[] prizes = { "vacation to Hawaii with all expenses covered",
                    "used glue stick",
                    "pile of dog dung",
                    "vacation to Europe with all expenses covered" };

string firstDoor = prizes[randomGenerator.Next(prizes.Length)];
string secondDoor = prizes[randomGenerator.Next(prizes.Length)];
string thirdDoor = prizes[randomGenerator.Next(prizes.Length)];

Answer 2

假設您不想重復任何獎品，則解決方案會稍微復雜一些，但是您可以帶上Linq和Random的一些技巧：

    var prizes = new string[] {
        "vacation to Hawaii with all expenses covered",
        "used glue stick",
        // etc
        "dime"            
    };

    var rand = new Random();

    var result = (from prize in prizes
                  orderby rand.NextDouble()
                  select prize).Take(3).ToArray();

Answer 3

賈斯汀（Justin），您的回答很好，但可能會導致2個門獲得相同的獎勵。 我相信這可能會更好：

string[] prizes = new string[]
        {
            "Prize 1",
            "Prize 2",
            "Prize 3",
            "Prize 4",
            "Prize 5"
        };

        Random r = new Random();
        var choices = prizes.OrderBy(x => r.Next()).Take(3).ToArray();

        string firstDoor = choices[0];
        string secondDoor = choices[1];
        string thirdDoor = choices[2];