Question

我正在使用Blackjack模拟器。我有以下字符串数组deck（我更喜欢在枚举上使用数组）：

string[] deck = { "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", };

用户将使用输入对话框输入卡组号：

byte deckNumber;
deckNumber = Convert.ToByte(Interaction.InputBox("Enter The Deck Number", "Deck Number", "3", 10, 10));

如何使用deckNumber复制数组？例如，用户输入2，数组将为：

{ "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A","2","3","4","5","6","7","8","9","10","J","Q","K","A" };

我想我需要一个for循环，但我无法做到。

Answer 1

string[] deck = { "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", };
var newDeck = Enumerable.Repeat(deck, 2).SelectMany(x => x).ToArray();

Answer 2

如果您使用的是.NET 3.5或更高版本，则可以使用LINQ作为L.B.已经表明：

var newDeck = Enumerable.Repeat(deck, 2).SelectMany(x => x).ToArray();

Enumerable.Repeat(deck, 2)为您提供了两个元素，每个元素都是string[]，.SelectMany(x => x)将其展平为一系列字符串，.ToArray()显然将该系列转换为数组。< / p>

否则，您可以使用循环：

var newDeck = new string[deck.Length * deckNumber];

for (int d = 0; d < deckNumber; d++)
{
    for (int i = 0; i < deck.Length; i++)
    {
        newDeck[d * deck.Length + i] = deck[i];
    }
}

Answer 3

var source = new string [] {“a”，“b”};

var copy = new List（source）.ToArray（）;

如何在C＃中复制数组

3 个答案: