{"type":"rich","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/troter/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftroter.hatenablog.jp%2Fentry%2F20070520%2F1179664354\" title=\" Magic Squares (#124) - \u653e\u7267\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2007-05-20 21:32:34","image_url":null,"version":"1.0","blog_url":"https://troter.hatenablog.jp/","height":"190","author_name":"troter","blog_title":"\u653e\u7267\u65e5\u8a18","width":"100%","provider_url":"https://hatena.blog","title":" Magic Squares (#124)","categories":["Ruby","QUIZ"],"description":"\u5947\u6570\u306e\u307f class OddMagicSquare attr_reader :square, :order def initialize(order) @order = order @square = case when order % 2 == 1 then odd_order else make_square(@order) end end def show @square ? @square.map {|l| l.join(\",\") }.join(\"\\n\") : \"\" end private def make_square(order) Array.new(order) {|i| Arr\u2026","url":"https://troter.hatenablog.jp/entry/20070520/1179664354"}