hyuki0000/kuku.rb

## kuku.rb
# 九九の表と倍数
# https://twitter.com/hyuki/status/848895521846468608

count = []
(1..81).each do |n|
  puts "n = #{n}"
  count[n] = 0
  (1..9).each do |y|
    (1..9).each do |x|
      if x * y % n == 0
        print '■'
        count[n] += 1
      else
        print '□'
      end
    end
    puts
  end
  puts
end

(1..81).each do |n|
  printf("%2d の倍数は %2d 個\n", n, count[n])
end
	# 九九の表と倍数
	# https://twitter.com/hyuki/status/848895521846468608

	count = []
	(1..81).each do \|n\|
	puts "n = #{n}"
	count[n] = 0
	(1..9).each do \|y\|
	(1..9).each do \|x\|
	if x * y % n == 0
	print '■'
	count[n] += 1
	else
	print '□'
	end
	end
	puts
	end
	puts
	end

	(1..81).each do \|n\|
	printf("%2d の倍数は %2d 個\n", n, count[n])
	end