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shorter xor

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a 2020-12-02 11:00:12 -06:00
parent aa78a1b463
commit e1171830b9
1 changed files with 1 additions and 1 deletions
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02/02.exs
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@ -31,7 +31,7 @@ list
fn {p1, p2, character, password} -> fn {p1, p2, character, password} ->
first = Enum.at(password, p1-1) == character first = Enum.at(password, p1-1) == character
second = Enum.at(password, p2-1) == character second = Enum.at(password, p2-1) == character
(first and !second) or (!first and second) first != second # exclusive or is equivalent to two things not matching (not both true or both false)
end end
) )
|> Enum.count() |> Enum.count()