static void Main(string[] args)
{
Graph graph = new Graph();
graph.AddEdge(1, 2);
graph.AddEdge(1, 3);
graph.AddEdge(1, 4);
graph.AddEdge(2, 5);
graph.AddEdge(2, 6);
graph.AddEdge(4, 7);
graph.AddEdge(4, 8);
graph.AddEdge(5, 9);
graph.AddEdge(5, 10);
graph.AddEdge(7, 11);
graph.AddEdge(7, 12);
IIterator iterator = graph.GetIterator();
foreach (var item in new List <string> {
"A", "B", "C", "D"
})
{
Observer plyer = new Observer(item);
iterator.Attach(plyer);
}
iterator.Next();
Console.ReadKey();
}