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author | Tom Smeding <tom.smeding@gmail.com> | 2020-12-27 14:09:22 +0100 |
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committer | Tom Smeding <tom.smeding@gmail.com> | 2020-12-27 14:09:22 +0100 |
commit | 833fcf24d661ef600d00c017ce7796b2fc938a17 (patch) | |
tree | 6e87577f23113e3be18fec3c6b297a9fbdc2dbb2 /2020/19.hs | |
parent | a03c0ce5608b23a351886efbbeaa30cef19c284f (diff) |
Day 20
Diffstat (limited to '2020/19.hs')
-rw-r--r-- | 2020/19.hs | 3 |
1 files changed, 1 insertions, 2 deletions
@@ -34,8 +34,7 @@ matches :: Gram -> [Int] -> String -> Bool matches _ [] [] = True matches gram@(Gram arr) (r:rs) (c:cs) = case arr A.! r of - S c' | c == c' -> matches gram rs cs - | otherwise -> False + S c' -> c == c' && matches gram rs cs D alts -> any (\alt -> matches gram (alt ++ rs) (c:cs)) alts matches _ _ _ = False |