blur-hint.rb

  def blur
    @array.each_with_index do |row,x|
      row.each_with_index do |cell,y| 
        last_x_pixel = # TODO: calculate the width of the image here.  May need to subtract 1.
          if @array[x][y] == 1 
            @new_array[x][y] ||= 1
            @new_array[x-1][y] = 1 if x != 0 # makes sense to go left, unless it's the left-most
            @new_array[x][y-1] = 1
            @new_array[x][y+1] = 1
            @new_array[x+1][y] = 1 if x != last_x_pixel # only go right if it's not the last x_pixel
          else
            @new_array[x][y] ||=  @array[x][y]
          end 
      end
    end