static void Main(string[] args)
{
MyDictionary <int, string> myDictionary = new MyDictionary <int, string>();
myDictionary.Add(1, "Istanbul");
myDictionary.Add(2, "Ankara");
myDictionary.Add(3, "Izmir");
myDictionary.Add(4, "Kocaeli");
myDictionary.Add(5, "Bursa");
Console.WriteLine(myDictionary.GetLength());
Console.WriteLine(myDictionary.GetValue(1));
Console.WriteLine(myDictionary.GetValue(3));
Console.WriteLine(myDictionary.GetValue(5));
Console.WriteLine(myDictionary.GetValue(2));
Console.WriteLine(myDictionary.GetValue(4));
}