public static NodeCollection hieu(NodeCollection nodes1, NodeCollection nodes2)
{
if (nodes1.Count > nodes2.Count)
{
NodeCollection result = new NodeCollection();
foreach (Node node in nodes1)
{
if (!nodes2.Contains(node))
{
result.Add(node);
}
}
if (result.Count > 0)
{
return(result);
}
else
{
return(null);
}
}
return(null);
}
void khoitao()
{
_edgeList = new EdgeCollection();
_nodeList = new NodeCollection();
this.IsUndirected = false;
}