I have a game in which I need to sort a list greatest to least, can anybody please help me?

If it's a small list, then use insertion sort.
If it's larger, use quicksort or mergesort.
Quicksort works like this: Take the first element in a list. Put all greater than it before it, all less after it. Repeat this process on any sublist that forms.
Mergesort is this: Split the list into 2-length lists. Sort each of these, then join them into 4-length lists, sort them, and repeat this joining and sorting until you have a sorted list.

Never Mind, I got it.