aoc/2020/02/02.rb
2020-12-10 17:11:17 -06:00

18 lines
419 B
Ruby

input = File.readlines("input.txt")
part1 = 0
part2 = 0
for line in input do
policy, password = line.split(': ')
counts, character = policy.split(' ')
n1, n2 = counts.split('-').map(&:to_i)
if password.count(character) >= n1 && password.count(character) <= n2
part1 += 1
end
if (password[n1-1] == character) ^ (password[n2-1] == character)
part2 += 1
end
end
puts "Part 1: #{part1}"
puts "Part 2: #{part2}"