16 lines
407 B
Elixir
16 lines
407 B
Elixir
defmodule Year do
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@doc """
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Returns whether 'year' is a leap year.
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A leap year occurs:
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on every year that is evenly divisible by 4
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except every year that is evenly divisible by 100
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unless the year is also evenly divisible by 400
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"""
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@spec leap_year?(non_neg_integer) :: boolean
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def leap_year?(year) do
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rem(year, 400) == 0 || (rem(year, 4) == 0 && rem(year, 100) != 0)
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end
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end
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