Add possible solution for StringsAndBinaries-5

strings/stringsandbinaries1.exs

@@ -30,4 +30,16 @@ defmodule StringsAndBinaries do
   defp substract(a, b), do: a - b
   defp multiply(a, b), do: a * b
   defp divide(a, b), do: a / b
+
+  def center(dqs_list) do
+    longest = Enum.max_by(dqs_list, &String.length/1)
+    Enum.map(dqs_list, &print_centered_string(&1, longest))
+  end
+
+  defp print_centered_string(dqs, center_string) do
+    offset = (String.length(center_string) - String.length(dqs)) / 2
+    max_length = round(String.length(dqs) + Float.floor(offset))
+    dqs_padding = String.pad_leading(dqs, max_length)
+    IO.puts(dqs_padding)
+  end
 end