using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Random rnd = new Random();

        Console.WriteLine(rnd.NextFloat(0, 10));

        int[] data = new int[]{5, 10, 15, 20, 25};

        data.Each(x => Console.WriteLine(x));

        rnd.Shuffle(data);

        Console.WriteLine();

        data.Each(x => Console.WriteLine(x));

    }

}

​

public static class ArrayExtension

{

    public static void Each<T>(this T[] array, Action<T> objFunc)

    {

        foreach (var x in array)

        {

            objFunc.DynamicInvoke(x);

        }

    }

}

​

public static class RandomExtension

{

    public static float NextFloat(this Random rnd, int min, int max)

    {

        return (float)(rnd.Next(min, max) + (rnd.Next()));

    }

    public static void Shuffle<T>(this Random rnd, List<T> list)

    {

        int i = list.Count;  

        while(i > 1)

        {

            i--;

            int targetIndex = rnd.Next(i + 1);

            //Would use the global swap method instead of this

            T temp = list[targetIndex];

            list[targetIndex] = list[i];

            list[i] = temp;

        }

    }

    public static void Shuffle(this Random rnd, Array array)

    {

        int i = array.Length;  

        while(i > 1)

        {

            i--;

            int targetIndex = rnd.Next(i + 1);

            //Would use the global swap method instead of this

            object temp = array.GetValue(targetIndex);

            array.SetValue(array.GetValue(i), targetIndex);

            array.SetValue(temp, i);

        }

    }

}