Initial data commit

Task/Even-or-odd/Elixir/even-or-odd-1.elixir

@@ -0,0 +1,14 @@
+defmodule RC do
+  import Integer
+
+  def even_or_odd(n) when is_even(n), do: "#{n} is even"
+  def even_or_odd(n)                , do: "#{n} is odd"
+      # In second "def", the guard clauses of "is_odd(n)" is unnecessary.
+
+  # Another definition way
+  def even_or_odd2(n) do
+    if is_even(n), do: "#{n} is even", else: "#{n} is odd"
+  end
+end
+
+Enum.each(-2..3, fn n -> IO.puts RC.even_or_odd(n) end)

Task/Even-or-odd/Elixir/even-or-odd-2.elixir

@@ -0,0 +1 @@
+rem(n,2) == 0