haiiro-shimeji
haiiro-shimeji
/ route.hs
Last active
December 12, 2015 04:09
— forked from honda0510/CountAllPaths.vb
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| import Control.Applicative | |
| goodRoute :: (Real a) => [[a]] -> [a] | |
| goodRoute = n . goodRoute_ | |
| where | |
| goodRoute_ :: (Real a) => [[a]] -> Maybe [a] | |
| goodRoute_ ([]:_) = Nothing | |
| goodRoute_ [] = Nothing | |
| goodRoute_ ((x:[]):[]) = Just (x:[]) | |
| goodRoute_ matrix = |