public bool Union(UnionFindNode p2)
{
var root1 = Find();
var root2 = p2.Find();
if (ReferenceEquals(root1, root2))
{
return(false);
}
if (root1.rank < root2.rank)
{
root1._parent = root2;
}
else if (root1.rank > root2.rank)
{
root2._parent = root1;
}
else
{
root2._parent = root1;
root1.rank++;
}
return(true);
}
/// <summary>
/// Determines whether or not this node and the other node are in the same set.
/// </summary>
public bool IsUnionedWith(UnionFindNode <T> other)
{
if (other == null)
{
throw new ArgumentNullException("other");
}
return(ReferenceEquals(Find(), other.Find()));
}
/// <summary>
/// Returns the current representative of the set this node is in.
/// Note that the representative is only accurate untl the next Union operation.
/// </summary>
public UnionFindNode <T> Find()
{
if (!ReferenceEquals(_parent, this))
{
_parent = _parent.Find();
}
return(_parent);
}
public bool IsUnionWith(UnionFindNode p2)
{
return(ReferenceEquals(Find(), p2.Find()));
}