CPSC 425 Spring 2006 
 HW 9: Even More ML -- Quicksort
- Type in the "smallest" solution we discussed in class and see if
it works.  If not, modify it so that it does.  Then trace (show all
recursive calls w/parameters and return values) the call 
smallest(5,[4,8,1,2]).
 
- Do exercises 7.6 and 7.7 (two versions of quicksort). Use good ML style!
 
- Extra credit: Do exercise 7.11 (powerset).