internal void AddPointToSet(Point point, SetRepresentative rep)
{
FindSetWithRep(rep.GetRep()).Add(point);
}
public void Union(SetRepresentative rep1, SetRepresentative rep2)
{
DisjointSet ds1 = FindSetWithRep(rep1.GetRep());
DisjointSet ds2 = FindSetWithRep(rep2.GetRep());
ds1.Union(ds2);
}