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santasList = File.stream!("inputs/day5.txt")
niceVowelRegex = ~r/[aeiou].*[aeiou].*[aeiou]/
niceDuplicateRegex = ~r/(.)\1/
naughtySubstrRegex = ~r/(ab)|(cd)|(pq)|(xy)/
isNice1 = fn name ->
niceVowels? = Regex.match?(niceVowelRegex, name)
niceDuplicate? = Regex.match?(niceDuplicateRegex, name)
naughtySustr? = Regex.match?(naughtySubstrRegex, name)
niceVowels? && niceDuplicate? && !naughtySustr?
end
niceCount1 =
Enum.filter(santasList, isNice1)
|> Enum.count()
IO.puts("Nice count 1: #{niceCount1}")
niceDuplicatePairRegex = ~r/(..).*\1/
niceLetterRepeatRegex = ~r/(.).\1/
isNice2 = fn name ->
niceDuplicatePair? = Regex.match?(niceDuplicatePairRegex, name)
niceLetterRepeat? = Regex.match?(niceLetterRepeatRegex, name)
niceDuplicatePair? && niceLetterRepeat?
end
niceCount2 =
Enum.filter(santasList, isNice2)
|> Enum.count()
IO.puts("Nice count 2: #{niceCount2}")
|
