elm/exercises/nucleotide-count/NucleotideCount.example

module NucleotideCount (..) where

import String
import List


nucleotideCounts : String -> List ( Char, Int )
nucleotideCounts sequence =
  [ (getCount 'A' sequence)
  , (getCount 'T' sequence)
  , (getCount 'C' sequence)
  , (getCount 'G' sequence)
  ]


getCount : Char -> String -> ( Char, Int )
getCount base sequence =
  ( base, (List.length (String.split (String.fromChar base) sequence)) - 1 )