{"provider_name":"Hatena Blog","url":"https://boxnos.hatenablog.com/entry/20080521/1211374021","description":"\u524d\u306b\u4f5c\u3063\u305f\u7d20\u6570\u5224\u5b9a\u304c\u706b\u3092\u5674\u304d\u305d\u3046\u3060\u3002 Problem 50 - PukiWiki100\u4e07\u672a\u6e80\u306e\u7d20\u6570\u3092\u9023\u7d9a\u3059\u308b\u7d20\u6570\u306e\u548c\u3067\u8868\u3057\u305f\u3068\u304d\u306b\u6700\u9577\u306b\u306a\u308b\u7d20\u6570\u3092\u7b54\u3048\u308b\u554f\u984c\u3002 \u307e\u305a\u306f\u7be9\u3002 (define (make-sieve-of-eratothenes n) (letrec ((sieve (make-vector (quotient (+ n 1) 2) #t)) (limit (sqrt n)) (check (lambda (i step) (if (< i n) (begin (vector-set! sieve (quotient i 2) #f) (check (+ i step) step)\u2026","version":"1.0","width":"100%","height":"190","published":"2008-05-21 21:47:01","image_url":null,"title":" Problem 50 - \u9023\u7d9a\u3059\u308b\u7d20\u6570\u306e\u548c","provider_url":"https://hatena.blog","categories":["Scheme"],"blog_title":"\u30dc\u30af\u30ce\u30b9","type":"rich","blog_url":"https://boxnos.hatenablog.com/","author_name":"tanakaBox","author_url":"https://blog.hatena.ne.jp/tanakaBox/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fboxnos.hatenablog.com%2Fentry%2F20080521%2F1211374021\" title=\" Problem 50 - \u9023\u7d9a\u3059\u308b\u7d20\u6570\u306e\u548c - \u30dc\u30af\u30ce\u30b9\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}