posted 22 years ago
Sounds like a List to me.
From API:
An ordered collection (also known as a sequence). The user of this interface has precise control over where in the list each element is inserted. The user can access elements by their integer index (position in the list), and search for elements in the list.
Unlike sets, lists typically allow duplicate elements.
[This message has been edited by Jim Hall (edited December 15, 2001).]