On Mon, Oct 15, 2007 at 03:49:44PM +0100, Ryan Bloor wrote: > Hi, its Ryan here... > > I've just come from an intensive course in java and have been thrown into the > imperative world of haskell. > > The problem that I have is extremely simple in java but I am having trouble > adjusting my old mindset. > > A multiset is a collection of items. > Each item may occur one or more times in the multiset. All items are of the > same type. > > The scenario we could use is a students' grades for their A levels: 3A, 4B > and 2C grades for our pupil 'x'. > A multiset may be implemented by a list... so ['A', 'A', 'A', 'B', 'B', 'B', > 'B, 'C', 'C'] but this very ineffiecient and tedious.
You might try, for example, rle encoding : [(3, 'A'), (4, 'B'), (2, 'C')]. Don't know if this would be more efficient for your task, but if you wish to 'just optimize something' you can give that a try. > How might one set out into putting this into action.... thanks... > > Any help that complements my ideas is welcome > > _________________________________________________________________ > Feel like a local wherever you go. > http://www.backofmyhand.com > _______________________________________________ > Haskell-Cafe mailing list > [email protected] > http://www.haskell.org/mailman/listinfo/haskell-cafe -- pierre _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
