using System;

public static class Program

{

​

    static object MiddleOfThree(object a, object b, object c)

    {

        var element1 = (IComparable)a;

        var element2 = (IComparable)b;

        var element3 = (IComparable)c;      

        if (element1.CompareTo(element2) > 0)

        {

            if (element1.CompareTo(element3) < 0 ) return element1;

            else 

                if (element3.CompareTo(element2) > 0 ) return element3;

        }

        else

            if (element2.CompareTo(element3) < 0 ) return element2;

            else 

                if (element1.CompareTo(element3) > 0 ) return element1;

        return element3;        

    }

    static object Min(Array array)

    {

        var bufer = (IComparable)array.GetValue(0);

        for (int i=0; i<array.Length; i++)          

            if (bufer.CompareTo(array.GetValue(i)) > 0)

                bufer = (IComparable)array.GetValue(i); 

        return bufer;

    }

    public static void Main()

    {

        Console.WriteLine("Минимальный элемент:");

        Console.WriteLine(Min(new[] { 3, 6, 2, 4 }));

        Console.WriteLine(Min(new[] { "B", "A", "C", "D" }));

        Console.WriteLine(Min(new[] { '4', '2', '7' }));

        Console.WriteLine("\nСредний элемент:");

        Console.WriteLine(MiddleOfThree(2, 3, 1));

        Console.WriteLine(MiddleOfThree(3, 1, 2));

        Console.WriteLine(MiddleOfThree(3, 5, 9));

        Console.WriteLine(MiddleOfThree("B", "Z", "A"));

        Console.WriteLine(MiddleOfThree(3.45, 2.67, 3.12));

    }

}