81 lines
1.8 KiB
Crystal
81 lines
1.8 KiB
Crystal
INPUT = File.read("day4.txt").lines.map(&.chomp)
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def parse_passport(string)
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new_hash = {} of String => String
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string.split(" ").each do |field|
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k,v = field.split(":")
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new_hash[k] = v
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end
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new_hash
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end
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def parse_passports(lines)
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passports = [] of Hash(String, String)
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passport = [] of String
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lines.each do |line|
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unless line.empty?
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passport << line
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next
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end
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passports << parse_passport(passport.join(" "))
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passport = [] of String
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end
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passports << parse_passport(passport.join(" "))
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end
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def part1
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input = INPUT.clone
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passports = parse_passports(input)
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total = passports.count do |passport|
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["byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid"].all? do |key|
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passport.has_key? key
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end
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end
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puts total
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end
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def part2
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input = INPUT.clone
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passports = parse_passports(input)
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total = passports.count do |passport|
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next unless value = passport["byr"]?
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value = value.to_i32
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next unless value >= 1920 && value <= 2002
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next unless value = passport["iyr"]?
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value = value.to_i32
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next unless value >= 2010 && value <= 2020
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next unless value = passport["eyr"]?
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value = value.to_i32
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next unless value >= 2020 && value <= 2030
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next unless value = passport["hgt"]?
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next unless value.ends_with?("cm") || value.ends_with?("in")
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ivalue = value[0..-3].to_i32
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if value.ends_with? "cm"
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next unless ivalue >= 150 && ivalue <= 193
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else
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next unless ivalue >= 59 && ivalue <= 76
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end
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next unless value = passport["hcl"]?
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next unless value[0] == '#' && (value[1..]).to_i32(16)
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next unless value = passport["ecl"]?
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next unless "amb blu brn gry grn hzl oth".split(" ").includes? value
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next unless value = passport["pid"]?
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next unless value.size == 9
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next unless value = value.to_i32?
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true
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end
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puts total
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end
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part1
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part2
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