{"provider_name":"Hatena Blog","published":"2012-09-30 00:00:00","author_name":"yarb","provider_url":"https://hatena.blog","url":"https://yarb.hatenadiary.org/entry/20120930/p1","type":"rich","blog_url":"https://yarb.hatenadiary.org/","height":"190","title":"\u30a2\u30c8\u30ad\u30f3\u306e\u7be9","width":"100%","author_url":"https://blog.hatena.ne.jp/yarb/","categories":["ruby"],"blog_title":"yarb\u306e\u65e5\u8a18","description":"\u7d20\u6570\u3092\u6c42\u3081\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u3057\u3066\u3001\u30a8\u30e9\u30c8\u30b9\u30c6\u30cd\u30b9\u306e\u7be9\u3088\u308a\u3082\u8a08\u7b97\u91cf\u7684\u306b\u306f\u901f\u3044\u3068\u3044\u3046\u30a2\u30c8\u30ad\u30f3\u306e\u7be9\u3068\u3044\u3046\u306e\u3092\u5b9f\u88c5\u3057\u3066\u307f\u3088\u3046\u3068\u601d\u3063\u3066\u691c\u7d22\u3057\u305f\u3089\u3001StakOverflow\u306b Python\u306e\u4f8b\u304c\u3042\u3063\u305f\u3002Wikipedia\u306e\u8a18\u8ff0\u306e\u307e\u3093\u307e\u3002\u3053\u308c\u3092Ruby\u306b\u66f8\u304d\u76f4\u3057\u3066\u307f\u305f\u3002 import math def AtkinSieve (limit): results = [2,3,5] sieve = [False]*(limit+1) factor = int(math.sqrt(limit))+1 for i in range(1,factor): for j in range(1, factor): n = 4*\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyarb.hatenadiary.org%2Fentry%2F20120930%2Fp1\" title=\"\u30a2\u30c8\u30ad\u30f3\u306e\u7be9 - yarb\u306e\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>","image_url":null,"version":"1.0"}