rosalinda_computing_GC_content

gc.ex

defmodule Gc do
  def gc_content(dataset) do
    map =
      String.replace(dataset, "\n", "")
      |> String.split(">", trim: true)
      |> Enum.map(fn x -> String.split_at(x, 13) end)

    element = Enum.into(map, %{})
    element_lenght = Enum.map(element, fn {k, v} -> {k, v, String.length(v)} end)

    string_splited =
      Enum.map(element_lenght, fn {k, v, l} -> {k, String.split(v, "", trim: true), l} end)

    sum_g_c =
      Enum.map(string_splited, fn {k, v, l} ->
        {k, v, l, Enum.count(v, fn v -> v == "G" end) + Enum.count(v, fn v -> v == "C" end)}
      end)

    percentage =
      Enum.map(sum_g_c, fn {k, v, l, quantity_gc} -> {k, v, l, quantity_gc * 100 / l} end)

    default_error =
      Enum.map(percentage, fn {k, _, _, percent} -> {k, Float.round(percent, 7)} end)

    keywords = Enum.into(default_error, %{})

    tuple = Enum.max_by(keywords, fn {_, v} -> v end)
    listed = Tuple.to_list(tuple)

    Enum.map(listed, fn x -> "\n#{x}" end)
    |> to_string
    |> String.trim()
    |> IO.puts()
  end
end