Anonymous user
Equilibrium index: Difference between revisions
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→{{header|Haskell}}
(→{{header|Wren}}: Library name change.) |
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=={{header|Haskell}}==
<lang haskell>import System.Random (randomRIO)
import Data.List (
import Control.Monad (replicateM)
import Control.Arrow ((&&&))
equilibr xs =
▲ map (\(a, b) -> sum a == sum b) . takeWhile (not . null . snd) $
flip ((&&&) <$> take <*> (drop . pred)) xs <$> [1 ..]
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