GEdge * Graph::getEdge(long firstNode, long secondNode){
GEdge *p = tnode[firstNode]->getIncidentEdges();
while(p){
if (p->IncidentNode() == secondNode)
return p;
else
p=p->Next();
}
return NULL;
}
GEdge *GNode::UnConnect( long incidentNode ) {
GEdge *p = getIncidentEdges();
GEdge *q;
if (!p) return NULL;
if(p->IncidentNode() == incidentNode){
adjacents = p->Next();
delete p;
}
return adjacents;
while (p->Next())
{
if(p->Next()->IncidentNode() == incidentNode){
q = p->Next();
p->Next(q->Next());
delete q;
}else
p = p->Next();
}
return adjacents;
}