public void AddDirectedEdge(HeadNode <T> fromVer, HeadNode <T> toVer)
{
if (fromVer.FirstEdge == null)
{
fromVer.FirstEdge = new ArcNode <T>(toVer);
}
else
{
ArcNode <T> tem, node = fromVer.FirstEdge;
do
{
if (node.headNode.Equals(toVer.Data))
{
throw new ArgumentException("添加了重复边！");
}
tem = node;
node = node.Next;
} while (node != null);
tem.Next = new ArcNode <T>(toVer);
}
}
public string asString()
{
string outputstring = string.Empty;
foreach (var HeadNode in _items)
{
if (HeadNode != null)
{
outputstring += string.Format("顶点：{0}", HeadNode.Data);
if (HeadNode.FirstEdge != null)
{
ArcNode <T> tem = HeadNode.FirstEdge;
while (tem != null)
{
outputstring += tem.headNode.Data.ToString();
tem = tem.Next;
}
}
}
outputstring += "\r\n";
}
return(outputstring);
}