This seems like an excellent set of files. A couple of questions.
1) Is it possible to reverse the order of the indexing in order to have the smallest elements at the top (other than the obvious: making all the entries negative when entering them and then converting them back to positive when using them)?
2)Is it possible to access the cost of an element from the priority queue by inputting its index in some way.
3)On a similar note is it possible to access the index and cost of an element by somehow inputting its position in the tree.
i.e. would it be possible to access all the elements on the lowest level.
Thanks, Kit.
