sum_of_multiples

elixir/sum-of-multiples/lib/sum_of_multiples.ex

@@ -0,0 +1,27 @@
+defmodule SumOfMultiples do
+  @doc """
+  Adds up all numbers from 1 to a given end number that are multiples of the factors provided.
+  """
+  @spec to(non_neg_integer, [non_neg_integer]) :: non_neg_integer
+  def to(limit, factors) do
+    for x <- 1..(limit - 1),
+        Enum.any?(factors, &(&1 != 0 && rem(x, &1) == 0 )),
+        reduce: 0
+    do
+      acc ->
+          IO.inspect(acc)
+          x + acc
+    end
+  end
+
+  # def to(limit, factors) do
+  #   factors
+  #   |> Enum.flat_map(&multipliers(&1, limit))
+  #   |> Enum.uniq()
+  #   |> Enum.sum()
+  # end
+
+  # defp multipliers(from, to) when from <= to and rem(to, from) == 0, do: Enum.take_every(from..(to - 1), from)
+  # defp multipliers(from, to) when from <= to, do: Enum.take_every(from..to, from)
+  # defp multipliers(_from, _to), do: []
+end