45 lines
1.0 KiB
Ruby
Executable File
45 lines
1.0 KiB
Ruby
Executable File
#!/usr/bin/env ruby
|
|
# frozen_string_literal: true
|
|
|
|
require 'pry'
|
|
|
|
def bubble_sort(array, rules)
|
|
return array if array.size <= 1
|
|
|
|
swap = true
|
|
while swap
|
|
swap = false
|
|
(array.length - 1).times do |x|
|
|
rule = rules.select { _1.include?(array[x]) and _1.include?(array[x + 1]) }.flatten
|
|
if rule != [array[x], array[x + 1]]
|
|
array[x], array[x + 1] = array[x + 1], array[x]
|
|
swap = true
|
|
end
|
|
end
|
|
end
|
|
array
|
|
end
|
|
|
|
# ifile = 'input.sample'
|
|
ifile = 'input'
|
|
input = File.readlines(ifile).map(&:strip).reject(&:empty?)
|
|
|
|
updates, rules = input.partition { _1.match?(',') }
|
|
rules.map! { _1.split('|').map(&:to_i) }
|
|
updates.map! { _1.split(',').map(&:to_i) }
|
|
|
|
updates.reject! do |update|
|
|
update.combination(2).map do |pair|
|
|
rule = rules.select { _1.include?(pair[0]) and _1.include?(pair[1]) }.flatten
|
|
next if rule.empty?
|
|
|
|
rule == pair
|
|
end.all?
|
|
end
|
|
|
|
updates.map! { |update| bubble_sort(update, rules) }
|
|
|
|
solution = updates.map { |update| update[update.size / 2] }.sum
|
|
# binding.pry
|
|
puts solution
|