using System.Collections.Generic;

​

namespace Interview3._1

{

    class Program

    {

        static void Main(string[] args)

        {

            var toyManager = ToyManager.GetInstance();

            toyManager.AddToy("Buzz Lightyear", "Hasbro");

            toyManager.AddToy("Woodie", "Hasbro");

            toyManager.AddToy("Donatello (TMNT)", "Playmates Toys");

​

            var hasbroToys = toyManager.GetToysByManufacturer("Hasbro");

             System.Console.WriteLine(string.Join("\n",hasbroToys));

        }

    }

​

    class ToyManager

    {

        private Dictionary<string, string> _toyDictionary;

        private static ToyManager _instance;

​

        private ToyManager()

        {

        }

​

        public static ToyManager GetInstance()

        {

            _instance = new ToyManager();

​

            return _instance;

        }

​

        public void AddToy(object toyName, object manufacturer)

        {

            _toyDictionary.Add(toyName.ToString(), manufacturer.ToString());

        }

​

        public List<object> GetToysByManufacturer(string manufacturer)

        {

            var toyList = new List<object>();

            foreach (var toy in _toyDictionary)

            {

                if (toy.Value == manufacturer)

                {

                    toyList.Add(toy.Key);

                }

            }

​

            return toyList;

        }

    }

}