public Tuple <int, int> EqualRange(T v)
{
if (!Contains(v))
{
return(new Tuple <int, int>(-1, -1));
}
return(new Tuple <int, int>(SB_BinarySearchTree <T> .LowerBound(_root, v), SB_BinarySearchTree <T> .UpperBound(_root, v) - 1));
}
public int LowerBound(T v)
{
return(SB_BinarySearchTree <T> .LowerBound(_root, v));
}
public int Count(T v)
{
return(SB_BinarySearchTree <T> .UpperBound(_root, v) - SB_BinarySearchTree <T> .LowerBound(_root, v));
}