public static void DisplayGraph(GraphList g)
{
Console.WriteLine("{0} verticies, {1} edges", g.V(), g.E());
for (int i = 0; i < g.V(); ++i)
{
Console.Write("{0}: ", i);
foreach (var u in g.Adj(i))
{
Console.Write("{0} ", u);
}
Console.WriteLine();
}
}