public TwoThreeTree <T> SymmetricDifference(TwoThreeTree <T> B)
{
TwoThreeTree <T> ANB = Difference(B); //A\B
TwoThreeTree <T> BNA = B.Difference(this); //B\A
return(ANB.Union(BNA));
}
public bool IsSupersetOf(IEnumerable <T> other)
{
if (other.Count() == 0)
{
return(true);
}
TwoThreeTree <T> B = new TwoThreeTree <T>(_comp);
B.AddRange(other);
TwoThreeTree <T> C = B.Difference(this);//B\A.
Int32 c = C._count;
if (c == 0)
{
return(true);
}
return(false);
}