52 lines
1.1 KiB
Elixir
52 lines
1.1 KiB
Elixir
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defmodule PopCount do
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@doc """
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Given the number, count the number of eggs.
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"""
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@spec egg_count(number :: integer()) :: non_neg_integer()
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def egg_count(number) do
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for(<<bit::1 <- :binary.encode_unsigned(number)>>, do: bit) |> Enum.sum
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end
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# @spec egg_count(number :: integer()) :: non_neg_integer()
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# def egg_count(number) do
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# result =
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# number
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# |> Integer.digits(2)
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# |> Enum.reduce(%{binary: "", count: 0, coop: "|", length: 0}, &egg_counter/2)
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# """
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# Chicken Coop:
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# #{String.duplicate(" _", result.length)}
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# #{result.coop}
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# Resulting Binary:
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# #{result.binary}
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# Decimal number on the display:
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# #{number}
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# Actual eggs in the coop:
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# #{result.count}
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# """
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# |> IO.puts()
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# result.count
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# end
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# defp egg_counter(element, %{binary: binary, count: count, coop: coop, length: length} = _acc) do
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# char =
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# case element do
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# 0 -> " "
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# 1 -> "E"
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# end
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# %{
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# coop: coop <> char <> "|",
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# count: count + element,
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# length: length + 1,
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# binary: binary <> "#{element}"
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# }
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# end
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end
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