Advent of Code 2020 Day 9 in Ruby

aoc9.rb

    nums = $<.readlines.map(&:to_i)

    w = 25
    w.upto(nums.length - 1) do |i|
      p nums[i] if nums[i-w, w].combination(2)
                               .map(&:sum)
                               .all? { |x| x != nums[i] }
    end

    w.times do |cw|
      nums.each_cons(cw + 1)
          .detect { |x| x.size > 1 && x.sum == 57195069 }
          .tap { |x| puts x.min + x.max if x }
    end