rna-transcription

elixir/rna-transcription/lib/rna_transcription.ex

@@ -0,0 +1,17 @@
+defmodule RnaTranscription do
+  @doc """
+  Transcribes a character list representing DNA nucleotides to RNA
+
+  ## Examples
+
+    iex> RnaTranscription.to_rna(~c"ACTG")
+    ~c"UGAC"
+  """
+  @spec to_rna([char]) :: [char]
+  def to_rna(?G), do: ?C
+  def to_rna(?C), do: ?G
+  def to_rna(?T), do: ?A
+  def to_rna(?A), do: ?U
+  def to_rna([char | rest]), do: [to_rna(char) | to_rna(rest)]
+  def to_rna([]), do: []
+end