99 Elm Problems/Problem 12

Decompress the run­-length encoded list generated in Problem 11.

import Html exposing (text)
import List

type Item a
    = Single a
    | Multiple Int a

decodeModified : List (Item a) -> List a
-- your implementation goes here

main = text <| toString <| 
  decodeModified [Multiple 3 'a', Single 'b', Multiple 3 'c', Single 'd', Multiple 5 'e']

Result:

['a', 'a', 'a', 'b', 'c', 'c', 'd', 'e', 'e', 'e', 'e', 'e']

Solutions