{"blog_title":"Words fly away, the written letter remains. ","height":"190","title":"\u518d\u5e30 (recursion)","author_name":"tomomii","provider_name":"Hatena Blog","image_url":null,"provider_url":"https://hatena.blog","description":"\u540c\u3058\u3053\u3068\u3092\u4f55\u5ea6\u3082\u7e70\u308a\u8fd4\u3057\u305f\u3044\u3068\u304d\u306b\u306f\u30eb\u30fc\u30d7\u3092\u4f7f\u3044\u3001\u554f\u984c\u306e\u5c0f\u3055\u3044\u90e8\u5206\u304c\u5168\u4f53\u306e\u554f\u984c\u306b\u4f3c\u3066\u3044\u308b\u3068\u304d\u306b\u518d\u5e30\u3092\u4f7f\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u968e\u4e57\u306e\u8a08\u7b97\u3067\u3059\u3002 def factorial num if num < 0 return #\u8ca0\u306e\u6570\u306e\u968e\u4e57\u8a08\u7b97\u4e0d\u53ef\u80fd end if num <= 1 1 else num*factorial(num-1) end end puts factorial(4) puts factorial(20) \u5206\u89e3\u8133\u304c\u3059\u3054\u304f\u5fc5\u8981\u3067\u3059\u306d\u3002\u968e\u4e57\u3068\u306f\u3064\u307e\u308a\u3069\u3046\u3044\u3046\u3053\u3068\u3068\u3044\u3046\u3053\u3068\u304c\u308f\u304b\u3089\u306a\u3044\u3068\u3060\u3081\u3002 moomin:ProgrammingRuby tomomi$ ruby recursion.rb 24 2\u2026","version":"1.0","blog_url":"https://tomomii.hatenablog.com/","type":"rich","width":"100%","author_url":"https://blog.hatena.ne.jp/tomomii/","categories":["Ruby"],"url":"https://tomomii.hatenablog.com/entry/20101127/p2","published":"2010-11-27 00:00:00","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftomomii.hatenablog.com%2Fentry%2F20101127%2Fp2\" title=\"\u518d\u5e30 (recursion) - Words fly away, the written letter remains. \" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}