Make space for two-digit days

2019/day8/part1.rb

@@ -1,50 +0,0 @@
-# frozen_string_literal: true
-
-class Layer
-  attr_reader :width, :height, :pixels
-  def initialize(width, height, pixels)
-    @width = width
-    @height = height
-    @pixels = pixels
-  end
-
-  def to_s
-    s = String.new
-    pixels.each_slice(@width) do |line|
-      s << line.join('')
-      s << "\n"
-    end
-    s
-  end
-end
-
-class SpaceImage
-  attr_reader :width, :height, :data
-
-  def initialize(width, height, data)
-    @width = width
-    @height = height
-    @data = data.strip.chars.map(&:to_i)
-    raise ArgumentError, 'bad data' unless (@data.size % (@width * @height)).zero?
-  end
-
-  def layers
-    return @layers unless @layers.nil?
-
-    @layers = []
-    @data.each_slice(@width * @height) do |layer|
-      @layers << Layer.new(@width, @height, layer)
-    end
-    @layers
-  end
-end
-
-input = File.read(File.join(__dir__, 'input'))
-img = SpaceImage.new(25, 6, input)
-
-target_layer = img.layers.min_by do |layer|
-  layer.pixels.count(&:zero?)
-end
-ones = target_layer.pixels.count { |p| p == 1 }
-twos = target_layer.pixels.count { |p| p == 2 }
-puts ones * twos