411 REFERENCE · Wikibooks
99 Elm Problems/Problem 8
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Write a function to remove consecutive duplicates of list elements.
import Html exposing (text)
import List
compress : List a -> List a
-- your implementation goes here
main = text (toString (compress [1, 1, 2, 2, 3, 3, 3, 4, 5, 4, 4, 4, 4]))
Result:
[1, 2, 3, 4, 5, 4]
Solutions