{"author_url":"https://blog.hatena.ne.jp/te-nu/","provider_url":"https://hatena.blog","height":"190","type":"rich","blog_url":"https://www.te-nu.com/","categories":["Ruby"],"image_url":"https://images-fe.ssl-images-amazon.com/images/I/51nXP3TKXVL._SL160_.jpg","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.te-nu.com%2Fentry%2F2018%2F09%2F06%2F223303\" title=\"Ruby\u3067\u518d\u5e30\u95a2\u6570\u306b\u3064\u3044\u3066\u8efd\u304f\u307e\u3068\u3081 - \u30a6\u30a7\u30d6\u30a8\u30f3\u30b8\u30cb\u30a2\u73cd\u9053\u4e2d\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2018-09-06 22:33:03","provider_name":"Hatena Blog","author_name":"te-nu","version":"1.0","width":"100%","blog_title":"\u30a6\u30a7\u30d6\u30a8\u30f3\u30b8\u30cb\u30a2\u73cd\u9053\u4e2d","title":"Ruby\u3067\u518d\u5e30\u95a2\u6570\u306b\u3064\u3044\u3066\u8efd\u304f\u307e\u3068\u3081","url":"https://www.te-nu.com/entry/2018/09/06/223303","description":"\u518d\u5e30\u95a2\u6570\u306b\u3064\u3044\u3066\u8efd\u304f\u307e\u3068\u3081\u3066\u307f\u307e\u3059\u3001\u4eca\u56de\u306fRuby\u3067\u66f8\u304d\u307e\u3059\u3002 \u518d\u5e30\u95a2\u6570\u3068\u306f \u95a2\u6570A\u306e\u4e2d\u3067\u540c\u3058\u95a2\u6570A\u3092\u4f7f\u3046\u51e6\u7406\u3092\u884c\u3046\u95a2\u6570\u306e\u3053\u3068\u3067\u3059\u3002 \u4f8b\uff1a def A(num) A(5) end \u2191\u307f\u305f\u3044\u306b\u666e\u901a\u306b\u547c\u3073\u51fa\u3059\u3060\u3051\u3060\u3068\u3001A\u304c\u547c\u3093\u3060A\u304c\u547c\u3093\u3060A\u304c\u547c\u3093\u3060A\u304c\u2026\u3068\u7121\u9650\u30eb\u30fc\u30d7\u306b\u306a\u3063\u3066\u30e1\u30e2\u30ea\u3092\u98df\u3044\u6f70\u3057\u307e\u3059\u3002 \u3088\u304f\u3042\u308b\u4f8b\u306f\u968e\u4e57\u3092\u6c42\u3081\u308b\u95a2\u6570\u3067\u3059\u3002 def kaijo(num) return 1 if num.zero? num * kaijo(num - 1) end # \u4e09\u9805\u6f14\u7b97\u5b50ver def kaijo(num) num.zero? ? 1 : num * kaijo(num - 1) end kaijo(\u2026"}