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