module BlurImage

  def blur
    table2 = []
    @table.each_with_index do |a, k|
      table2[k] = []
      a.each do |b|
        table2[k] << b
      end
    end

    table2.each_with_index do |x, i|
      x.each_with_index do |y, j|
        if y == 1
          @table[i][j + 1] = 1 if j + 1 < @num_of_columns
          @table[i][j - 1] = 1 if j - 1 >= 0
          @table[i + 1][j] = 1 if i + 1 < @num_of_rows
          @table[i - 1][j] = 1 if i - 1 >= 0
        end
      end
    end
  end

  def manhattan(n)
    n.times do
      self.blur
    end
  end
end
# instance variables are used across the entire class.  don't need it for a single method.
class Image
  attr_accessor :table, :n
  include BlurImage

  def initialize(table)
    @table = table
    @num_of_columns = table[0].length
    @num_of_rows = table.length
  end

  def output_image
    @table.each do |x|
      x.each do |y|
        print y
      end
      puts
    end
  end
end


image = Image.new([
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 1, 0, 0],
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0],
  [0, 1, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 1]
])

image.output_image

puts

image.manhattan(2)

image.output_image