X-Git-Url: https://git.njae.me.uk/?a=blobdiff_plain;f=advent07%2FMain.hs;h=8f4350d293e9fd37abba85ad702396b214a923dd;hb=845d28911baf93ec02a940198d210688adf9873f;hp=6d326a4f545c08603210a8d9bc73de441fc2a7db;hpb=c7364d4e2de33c97a720e1654e296d3f4c304756;p=advent-of-code-23.git

diff --git a/advent07/Main.hs b/advent07/Main.hs
index 6d326a4..8f4350d 100644
--- a/advent07/Main.hs
+++ b/advent07/Main.hs
@@ -33,17 +33,14 @@ part1 hands = sum $ fmap score rankedHands
         rankedHands = zip [1..] sortedHands
         score (r, CHand _ _ bid) = r * bid
 
-part2 hands = part1 $ fmap enJoker hands
+part2 = part1 . fmap enJoker
 
 enJoker :: Hand -> Hand
 enJoker (Hand cards bid) = Hand jCards bid
   where jCards = replace Jack Joker cards
 
 replace :: Eq a => a -> a -> [a] -> [a]
-replace _ _ [] = []
-replace f t (x:xs) 
-  | x == f = t : replace f t xs
-  | otherwise = x : replace f t xs
+replace f t = fmap (\x -> if x == f then t else x)
 
 classify :: Hand -> ClassifiedHand
 classify (Hand cards bid)