[EMAIL PROTECTED] wrote:
Dear Group,
I've spend the last few days figuring out the solution to Euler Problem 201 in
haskell. I first tried a relatively elegant approach based on Data.Map but
the performance was horrible. I never actually arrived at the answer. I then
rewrote the same
apfelmus wrote:
In other words, we have now calculated the more efficient program
euler201 = map snd . filter ((==50) . fst) . subsums $ squares
where
subsums [] = singleton (0,0)
subsums (x:xs) = map (\(n,s) - (n+1,s+x)) (subsums xs) `union` subsums xs
I forgot something
