/// <summary>
/// Finds object(s) in the set.
/// </summary>
/// <returns>Collection of objects equal to <b>obj</b>.</returns>
/// <remarks>
/// If no elements equal to <b>obj</b> are found in the set, returns
/// valid reference to an empty collection.
/// </remarks>
public System.Collections.ICollection FindAll(object key)
{
System.Collections.ArrayList result = new System.Collections.ArrayList();
if (key == null)
{
return(result);
}
RbTreeNode lower = _tree.LowerBound(key);
RbTreeNode upper = _tree.UpperBound(key);
if (lower == upper)
{
return(result);
}
for (RbTreeNode node = lower; node != upper; node = _tree.Next(node))
{
result.Add(node.Value);
}
return(result);
}
