using System;

using System.Collections;   

using System.Collections.Generic;

​

public class Program

{

    interface IThoughness

    {

        double Thoughness { get; set; }

    }

    class Magnet : IComparable  // нужен для сортировки

    {

        public int Power

        { get; set; }

        public int CompareTo(object obj)

        {

            Magnet m = obj as Magnet;

            if(m == null)

                return 0;

            return this.Power.CompareTo(m.Power);

        }

    }

    class Iron : IThoughness, IComparable 

    {

        public Iron(double n)

        {

            Thoughness = n;

        }

        public double Thoughness { get; set; }

        public int CompareTo(object obj)

        {

            int result = 0;

            Iron ir = obj as Iron;

            if(ir != null)

            {

                if(this.Thoughness > ir.Thoughness)

                {

                    result = 1; 

                }

                else if(this.Thoughness < ir.Thoughness)

                {

                    result = -1;

                }

            }

            return result;

        }

    }

    class MagnetBox

    {

        public MagnetBox(params int[] mPower)

        {

            sumPower = 0;

            magnets = new Magnet[mPower.Length];

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

            {               

                sumPower += mPower[i];

                magnets[i] = new Magnet();

                magnets[i].Power = mPower[i];

            }

        }

        private int sumPower;

        public int SumPower { get { return sumPower; } }

        private Magnet[] magnets;

        public Magnet[] Magnets { get { return magnets; } }

        public IEnumerator GetEnumerator()

        {

            Array.Sort(magnets);

            foreach(Magnet m in magnets)

            {

                yield return m; 

            }

        }

    }

    public static void Main()

    {

        List<Iron> iron = new List<Iron>(){new Iron(2), new Iron(2.5), new Iron(0.6), new Iron(1.54),

                                          new Iron(9.58), new Iron(7.14), new Iron(3.63), new Iron(1.76),};

        foreach(Iron ir in iron)

        {

            Console.WriteLine(ir.Thoughness);

        }

        Console.WriteLine("");

        iron.Sort();

        foreach(Iron ir in iron)

        {

            Console.WriteLine(ir.Thoughness);

        }

        Console.WriteLine("");

        MagnetBox mb = new MagnetBox(2,4,9,7,3);

        foreach(Magnet mg in mb)

            Console.WriteLine(mg.Power);

    }

}