c# - 随机字符串 c#

Question

我想知道随机串

示例字符串

string word;

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

我将能够得到:

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

Answer 1

这个解决方案(以扩展方法的形式)很好:

    public static string  Shuffle(this string str)
    {
        char[] array = str.ToCharArray();
        Random rng = new Random();
        int n = array.Length;
        while (n > 1)
        {
            n--;
            int k = rng.Next(n + 1);
            var value = array[k];
            array[k] = array[n];
            array[n] = value;
        }
        return new string(array);
    }