Replace recursive version with pattern-matching version of fizzbuzz

control/fizzbuzz.ex

@@ -0,0 +1,29 @@
+defmodule FizzBuzz do
+  def count(number) do
+    1..number
+    |> Enum.to_list
+    |> Enum.map(&FizzBuzz.check/1)
+  end
+
+  def check(number) when number > 0 do
+    cond do
+      rem(number, 5) == 0 and rem(number, 3) == 0 ->
+        "Fizzbuzz!"
+      rem(number, 5) == 0 ->
+        "Buzz!"
+      rem(number, 3) == 0 ->
+        "Fizz!"
+      true ->
+        number
+    end
+  end
+end
+
+defmodule ElixirFizzbuzz do
+  def upto(n) when n > 0, do: 1..n |> Enum.map(&fizzbuzz/1)
+
+  def fizzbuzz(n) when rem(n, 3) == 0 and rem(n, 5) == 0, do: "Fizzbuzz!"
+  def fizzbuzz(n) when rem(n, 3) == 0, do: "Fizz"
+  def fizzbuzz(n) when rem(n, 5) == 0, do: "Buzz"
+  def fizzbuzz(n) when n > 0, do: n
+end