Longest common subsequence: Difference between revisions

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=={{header|Haskell}}==
 
The [http[wp://en.wikipedia.org/wiki/Longest_common_subsequence#Solution_for_two_sequences |Wikipedia solution]] translates directly into Haskell, with the only difference that equal characters are added in front:
 
<lang haskell>longest xs ys = if length xs > length ys then xs else ys
Retrieved from "https://rosettacode.org/wiki/Longest_common_subsequence"