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crclark96/oneRow.hs

Created May 6, 2020 12:48
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gistfile1.txt
*Main> oneRow ["candy","doodle","pop","shield","lag","typewriter"]
["pop","lag","typewriter"]
Raw
oneRow.hs
import Data.List (intersect)
r0 = "`1234567890-=~!@#$%^&*()_+"
r1 = "qwertyuiop[]\\QWERTYUIOP{}|"
r2 = "asdfghjkl;'ASDFGHJKL:\""
r3 = "zxcvbnm,./ZXCVBNM<>?"
oneRow :: [String] -> [String]
oneRow = filter oneRow'
where oneRow' s = or $ map (subset s) [r0,r1,r2,r3]
subset xs ys = intersect xs ys == xs
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