Перемешать строку c #

Question

Я хочу знать случайную строку

Пример строка

string word;

//I want to shuffle it
word = "hello"  

Я мог бы получить:

rand == "ohlel"
rand == "lleho"
etc.

Answer 1

Вы можете попробовать что-то вроде этого ..

class Program
{
    static bool IsPositionfilled(int Position, List<int> WordPositions)
    {
        return WordPositions.Exists(a => a == Position);
    }

    public static string shufflestring(string word)
    {
        List<int> WordPositions = new List<int>();
        Random r = new Random();
        string shuffledstring = null;
        foreach (char c in word)
        {
            while (true)
            {

                int position = r.Next(word.Length);
                if (!IsPositionfilled(position, WordPositions))
                {
                    shuffledstring += word[position];
                    WordPositions.Add(position);
                    break;
                }
            }


        }
        return shuffledstring;
    }
    static void Main(string[] args)
    {

        string word = "Hel";
        Hashtable h = new Hashtable();
        for (int count = 0; count < 1000; count++)
        {
            Thread.Sleep(1);
            string shuffledstring = shufflestring(word);
            if (h.Contains(shuffledstring))
                h[shuffledstring] = ((int)h[shuffledstring]) + 1;
            else
                h.Add(shuffledstring,1);
        }

        Console.WriteLine(word);
        foreach (DictionaryEntry e in h)
        {
            Console.WriteLine(e.Key.ToString() + " , " + e.Value.ToString()); 
        }
    }
}

Answer 2

class Program
{

    static void Main(string[] args)
    {
        string word = "hello";
        string temp = word;
        string result = string.Empty;
        Random rand = new Random();

        for (int a = 0; a < word.Length; a++)
        {
            //multiplied by a number to get a better result, it was less likely for the last index to be picked
            int temp1 = rand.Next(0, (temp.Length - 1) * 3);

            result += temp[temp1 % temp.Length];
            temp = temp.Remove(temp1 % temp.Length, 1);
        }
        Console.WriteLine(result);
    }
}