11 lines
216 B
Haskell
11 lines
216 B
Haskell
pack :: (Eq a) => [a] -> [[a]]
|
|
pack =
|
|
foldr
|
|
( \x acc -> case acc of
|
|
[] -> [[x]]
|
|
(hd : tl) ->
|
|
if x == head hd
|
|
then (x : hd) : tl
|
|
else [x] : hd : tl
|
|
)
|
|
[]
|