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solve 2015 day 8

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Sloane Perrault 2022-09-21 09:19:53 -04:00
parent e2c9f6fec3
commit 2e2b0d982c
2 changed files with 335 additions and 0 deletions
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300
2015/input/2015_8.txt Normal file
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import AOC
aoc 2015, 8 do
def decoded_difference(str, diff \\ 0)
def decoded_difference("", diff), do: diff
def decoded_difference(~S[\"] <> rest, diff), do: decoded_difference(rest, diff + 1)
def decoded_difference(~S[\\] <> rest, diff), do: decoded_difference(rest, diff + 1)
def decoded_difference(~S["] <> rest, diff), do: decoded_difference(rest, diff + 1)
def decoded_difference(<<(~S[\x]), _::binary-size(2), rest::binary>>, diff),
do: decoded_difference(rest, diff + 3)
def decoded_difference(<<_::binary-size(1), rest::binary>>, diff),
do: decoded_difference(rest, diff)
def encoded_difference(str, diff \\ 0)
def encoded_difference("", diff), do: diff + 2
def encoded_difference(~S["] <> rest, diff), do: encoded_difference(rest, diff + 1)
def encoded_difference(~s[\\] <> rest, diff), do: encoded_difference(rest, diff + 1)
def encoded_difference(<<_::binary-size(1), rest::binary>>, diff),
do: encoded_difference(rest, diff)
def p1 do
input_stream()
|> Stream.map(&decoded_difference/1)
|> Enum.sum()
end
def p2 do
input_stream()
|> Stream.map(&encoded_difference/1)
|> Enum.sum()
end
end