/// <summary>
/// Substract keys
/// </summary>
/// <param name="ls"></param>
/// <returns></returns>
public LongSet Minus(LongSet ls)
{
LongSet rv = new LongSet(this);
foreach (long v in keys)
{
if (ls.Exist(v))
{
rv.Remove(v);
}
}
return(rv);
}
/// <summary>
/// Intersects sets
/// </summary>
/// <param name="ls"></param>
/// <returns></returns>
public LongSet Intersect(LongSet ls)
{
if (this._size > ls._size)
{
return(ls.Union(this));
}
else
{
LongSet rv = new LongSet();
foreach (long v in keys)
{
if (ls.Exist(v))
{
rv.Add(v);
}
}
return(rv);
}
}
/// <summary>
/// Intersects sets
/// </summary>
/// <param name="ls"></param>
/// <returns></returns>
public LongSet Intersect( LongSet ls )
{
if(this._size>ls._size)
return ls.Union(this);
else
{
LongSet rv = new LongSet();
foreach(long v in keys)
{
if(ls.Exist(v))
rv.Add(v);
}
return rv;
}
}
/// <summary>
/// Substract keys
/// </summary>
/// <param name="ls"></param>
/// <returns></returns>
public LongSet Minus( LongSet ls )
{
LongSet rv = new LongSet(this);
foreach(long v in keys)
{
if(ls.Exist(v))
rv.Remove(v);
}
return rv;
}
