{"provider_url":"https://hatena.blog","blog_url":"https://boxnos.hatenablog.com/","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fboxnos.hatenablog.com%2Fentry%2F20071219%2F1198001944\" title=\" \u30ea\u30b9\u30c8\u4fee\u884c \u30d1\u30b9\u30ab\u30eb\u306e\u4e09\u89d2\u5f62\u3092\u30ea\u30b9\u30c8\u3067\u6c42\u3081\u308b - \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>","title":" \u30ea\u30b9\u30c8\u4fee\u884c \u30d1\u30b9\u30ab\u30eb\u306e\u4e09\u89d2\u5f62\u3092\u30ea\u30b9\u30c8\u3067\u6c42\u3081\u308b","type":"rich","author_url":"https://blog.hatena.ne.jp/tanakaBox/","categories":["Scheme"],"blog_title":"\u30dc\u30af\u30ce\u30b9","published":"2007-12-19 03:19:04","height":"190","provider_name":"Hatena Blog","description":"\u4eca\u56de\u306e\u30ea\u30b9\u30c8\u4fee\u884c\u306e\u30c6\u30fc\u30de\u306f\u30d1\u30b9\u30ab\u30eb\u306e\u4e09\u89d2\u5f62\u306b\u6c7a\u5b9a\u301c\u3002SICP\u306e\u554f\u984c\u3067\u306f(combination n k)\u2192\u5024\u3060\u3063\u305f\u306e\u3067\u3042\u3093\u307e\u308a\u4e09\u89d2\u5f62\u3063\u307d\u304f\u306a\u304b\u3063\u305f!!\u3061\u3087\u3063\u3068\u4e0d\u6e80\u3060\u3063\u305f\u306e\u3067\u3001\u30ea\u30b9\u30c8\u3067\u6c42\u3081\u305f\u3044\u3002 \u65b9\u91dd \u30d1\u30b9\u30ab\u30eb\u306e\u4e09\u89d2\u5f62n\u5217\u3092\u6c42\u3081\u308b\u306b\u306f\u3001\u524d\u306en-1\u5217\u306e\u30ea\u30b9\u30c8\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\u3002\u5c65\u6b74\u304c\u5fc5\u8981\u306a\u306e\u3067\u3001(combination n k n-1\u307e\u3067\u306e\u30ea\u30b9\u30c8)\u3068\u3044\u3046\u3088\u3046\u306b\u3057\u3066\u30d1\u30b9\u30ab\u30eb\u306e\u4e09\u89d2\u5f62\u3092\u6c42\u3081\u3066\u3044\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002 \u30b4\u30cb\u30e7\u30b4\u30cb\u30e7 \u3067\u304d\u305f\u3041\u301c\u3002 (define (combination n k l) (cond ((= k 0) 1) ((= k n) 1) (else (+ (list-ref (car l) \u2026","version":"1.0","url":"https://boxnos.hatenablog.com/entry/20071219/1198001944","image_url":null,"author_name":"tanakaBox"}