C# 使用用户输入选择要从中随机打印元素的字符串数组

一种方法是数组数组。 看看 https://msdn.microsoft.com/en-us/library/aa288453(v=vs.71(.aspx，特别是他们谈论数组数组(交错(的地方。

(可能(更直观的方法是数组字典。 想一想：

Dictionary<string, string[]> myList = new Dictionary<string, string[]>();
myList.Add("ahri",new string[] { "Academy", "Challenger", "Dynasty", "Foxfire", "Midnight", "Popstar" });
//your other code
Console.WriteLine(myList[champion][randomNumber]);

考虑使用数组myList[champion].Length的长度作为随机数的边界，以防止出现越界错误。

试一试：

    static void Main(string[] args)
        {
            Dictionary<string, string[]> skins = new Dictionary<string, string[]>();
            skins.Add("ahri", new string[] { "Academy", "Challenger", "Dynasty", "Foxfire", "Midnight", "Popstar" });
            skins.Add("leesin", new string[] { "Traditional", "Acolyte", "Dragon Fist", "Musy Thai", "Pool Party", "SKT T1", "Knockout" });
            // Creates title for application
            Console.WriteLine("Conor's Random League of Legends Skin Selector v0.1'r'n'r'n");
            Random rnd = new Random();
            Console.ForegroundColor = ConsoleColor.Gray;
            Console.WriteLine("What champion would you like to select a skin for?..    ");
            string champion = Console.ReadLine().ToLower();
            Console.Write("Press the 'enter' key for a random champion..     ");
            Console.ReadLine();
            if(skins.ContainsKey(champion))
            {
                //return a random champion skin from the user input key in dict based on a random number from the length of the string array
                Console.WriteLine(skins[champion][rnd.Next(skins[champion].Length)]);
            }
        }

添加到Dictionary允许您通过检查冠军名称或Key来简化过程，然后根据其长度从string[]数组或Value中随机选择一个皮肤，这要归功于 0 和数组中元素计数之间的随机数。

希望这有助于芽:)

编辑：我感到无聊并玩了一下(无聊的意思是试图避免完成我的任务(，所以我想出了一些对你更用户友好的东西。人们可能会讨厌我给你整个解决方案，但它告诉你处理这些情况的方法，所以我认为这是以身作则的教学。看一看。

static void Main(string[] args)
{
    Console.Clear(); //For a 'clean slate' on every execution, can ditch this if you want
    Console.ForegroundColor = ConsoleColor.Gray;
    Dictionary<string, string[]> skins = new Dictionary<string, string[]>();
    skins.Add("ahri", new string[] { "Academy", "Challenger", "Dynasty", "Foxfire", "Midnight", "Popstar" });
    skins.Add("leesin", new string[] { "Traditional", "Acolyte", "Dragon Fist", "Musy Thai", "Pool Party", "SKT T1", "Knockout" });
    Console.WriteLine("Conor's Random League of Legends Skin Selector v0.1'r'n'r'n");
    Console.WriteLine("What champion would you like to select a skin for? 'r'nPress enter for a random champion...    ");
    var champion = Console.ReadLine(); 
    var rnd = new Random();
    if (champion.Equals(string.Empty))
    {
        var tmpList = Enumerable.ToList(skins.Keys);
        champion = tmpList[rnd.Next(tmpList.Count)];
    }
    else
    {
        champion = champion.Trim().ToLower(); 
    }
    Console.Write(string.Format("Champion {0} Selected 'r'n", champion));
    if (skins.ContainsKey(champion)) 
    {
        Console.WriteLine(string.Format("Your random skin for {0} is: {1}'r'n", champion, skins[champion][rnd.Next(skins[champion].Length)]));
    }
    else
    {
        Console.Clear(); //clear the slate so console doesn't look cluttered.
        Main(args); 
    }
}

现在，除了你在英雄和他们的皮肤中增加了 127 个奇数之外，这几乎已经完成了。

快速的概述，简短而甜蜜。

• 对处理所有用户输入的Console进行一次调用，其余的都是自动的
• 检查一个空string，如果它找到一个有效的，并输入击键，就像他们输入一个不正确的值一样，它不会在Dict中找到，所以无论如何它都会"重新启动"程序。因此，他们有两个选择：输入表示为string Key的正确值，或者将其留空并按 Enter 键。
• 如果找到(输入(空string，它将皮肤Dict Keys转换为List，并根据 0 和所述Count()元素之间的随机数随机选择一个Dict
• 否则，它将读取输入转换为可用的字符串，以达到此处的目的并继续前进
• 检查调整后的用户输入或随机选择的string key是否与Dict的Keys(如果找到(，根据该Keys Value下数组元素的Length或Count输出随机皮肤，此时程序存在。
• 如果未找到Key(仅基于不正确的用户输入(，则会清除控制台并"重新启动"应用程序。

这远非可用的最佳实现，但它有效，我真的看不出它的逻辑有问题，如果它在某处有问题，可以随时更新我。假设我现在应该做我的作业。这是15分钟，很有趣。必须喜欢编码:)

希望这有所帮助，也许您现在有一些可以研究并扩展您的知识的东西。

后

试试这个：

namespace RandomLolChampSelector
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] ahri = { "Academy", "Challenger", "Dynasty", "Foxfire", "Midnight", "Popstar" };
            string[] leeSin = { "Traditional", "Acolyte", "Dragon Fist", "Musy Thai", "Pool Party", "SKT T1", "Knockout" };
            // Creates title for application
            Console.WriteLine("Conor's Random League of Legends Skin Selector v0.1");
            Console.WriteLine(" ");
            Console.WriteLine(" ");
            Random rnd = new Random();
            Console.ForegroundColor = ConsoleColor.Gray;
            Console.WriteLine("What champion would you like to select a skin for?..    ");
            string champion = Console.ReadLine();

                    // Gets user to press a key to run the code
             Console.Write("Press the 'enter' key for a random champion..     ");
             string question = Console.ReadLine();
             if(champion == "ahri")
             {
                int randomNumber = rnd.Next(ahri.Length-1);
                Console.WriteLine(ahri[randomNumber]);
             }
             else //If you have more than 2 arrays you will need another if or a case statement
             {
                int randomNumber = rnd.Next(leeSin.Length-1);
                Console.WriteLine(leeSin[randomNumber]);
             }
        }
    }
}

我已经修改了您的原始程序(保留尽可能多的代码(以产生预期的行为。 请随意在这里按原样运行并研究我为使其工作所做的工作：

class Program
{
    static void Main(string[] args)
    {
        string[] ahri = { "Academy", "Challenger", "Dynasty", "Foxfire", "Midnight", "Popstar" };
        string[] leeSin = { "Traditional", "Acolyte", "Dragon Fist", "Musy Thai", "Pool Party", "SKT T1", "Knockout" };
        // Creates title for application
        Console.WriteLine("Conor's Random League of Legends Skin Selector v0.1");
        Console.WriteLine(" ");
        Console.WriteLine(" ");
        Random rnd = new Random();
        Console.ForegroundColor = ConsoleColor.Gray;
        // Stores what array has been selected:
        string[] champions;
        Console.WriteLine("What champion would you like to select a skin for?..    ");
        string championName = Console.ReadLine();
        if (championName.Equals("ahri", StringComparison.CurrentCultureIgnoreCase))
        {
            champions = ahri;
        }
        else if (championName.Equals("leeSin", StringComparison.CurrentCultureIgnoreCase))
        {
            champions = leeSin;
        }
        else 
        {
            // No champion selected, exit program:
            Console.WriteLine("No champion selected, quitting...");
            return;
        }
        while (true)
        {
            // Gets user to press a key to run the code
            Console.WriteLine("Press the 'enter' key for a random champion..     ");
            if (Console.ReadKey(true).Key == ConsoleKey.Enter)
            {                    
                int randomNumber = rnd.Next(champions.Length);
                Console.WriteLine(champions[randomNumber]);
            }
        }
    }
}