Longest increasing subsequence: Difference between revisions

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=={{header|Haskell}}==
===Naive implementation===
<lang Haskell>import Data.Ord ( comparing )
import Data.List.Ordered ( isSorted )
import Data.List.Ordered
 
lis :: Ord a => [a] -> [a]
lis = maximumBy (comparing length) . filter isSorted . subsequences
-- longest <-- increasing <-- all
 
 
main = do