{"id":204730,"date":"2025-05-29T09:31:57","date_gmt":"2025-05-29T01:31:57","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204730\/"},"modified":"2025-05-29T09:31:57","modified_gmt":"2025-05-29T01:31:57","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e9%ab%98%e9%98%b6%e5%87%bd%e6%95%b0%e5%ae%9e%e7%8e%b0%e5%88%a4%e6%96%ad%e4%b8%80%e4%b8%aa%e6%95%b0%e6%98%af%e5%90%a6%e8%83%bd%e8%a2%ab-2-%e5%88%b0-n-%e4%b9%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204730\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528\u9ad8\u9636\u51fd\u6570\u5b9e\u73b0\u5224\u65ad\u4e00\u4e2a\u6570\u662f\u5426\u80fd\u88ab 2 \u5230 n \u4e4b\u95f4\u7684\u7d20\u6570\u6574\u9664\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u4f7f\u7528\u9ad8\u9636\u51fd\u6570\u5b9e\u73b0\u5224\u65ad\u4e00\u4e2a\u6570\u662f\u5426\u80fd\u88ab 2 \u5230 n \u4e4b\u95f4\u7684\u7d20\u6570\u6574\u9664\uff1f<\/h1>\n<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241114\/17315859956735e7cb3ca82.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>python \u9ad8\u9636\u51fd\u6570 &#8211; div_by_primes_under_no_lambda<\/strong><\/p>\n<p>\u7406\u89e3\u9ad8\u9636\u51fd\u6570\u7684\u8fd0\u7528\u81f3\u5173\u91cd\u8981\uff0c\u5b83\u5141\u8bb8\u51fd\u6570\u4f5c\u4e3a\u5176\u4ed6\u51fd\u6570\u7684\u53c2\u6570\u4f20\u9012\u6216\u8fd4\u56de\u7684\u7ed3\u679c\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u8981\u89e3\u51b3\u4e00\u4e2a\u4f7f\u7528\u9ad8\u9636\u51fd\u6570\u7684\u8c1c\u9898\uff1a<\/p>\n<ul>\n<li><strong>\u8981\u6c42\uff1a<\/strong><\/li>\n<\/ul>\n<pre>div_by_primes_under_no_lambda(n)<\/pre>\n<p>\u8fd4\u56de\u4e00\u4e2a\u51fd\u6570\uff0c\u8be5\u51fd\u6570<\/p>\n<pre>div_by_primes_under_no_lambda(n)(x)<\/pre>\n<p>\u63a5\u53d7\u4e00\u4e2a\u53c2\u6570 x\uff0c\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u5224\u65ad 2 \u5230 n \u4e2d\u662f\u5426\u5b58\u5728\u53ef\u4ee5\u6574\u9664 x \u7684\u7d20\u6570\u3002<\/p>\n<ul>\n<li><strong>\u601d\u8def\uff1a<\/strong><\/li>\n<\/ul>\n<ol>\n<li><strong>\u521b\u5efa\u68c0\u67e5\u51fd\u6570\uff1a<\/strong>\u5b9a\u4e49\u4e00\u4e2a\u540d\u4e3a checker \u521d\u59cb\u4e3a false \u7684\u51fd\u6570\u3002<\/li>\n<li><strong>\u5faa\u73af\u7d20\u6570\uff1a<\/strong>\u4f7f\u7528 while \u5faa\u73af\u4ece 2 \u5f00\u59cb\u4f9d\u6b21\u904d\u5386\u7d20\u6570\u3002<\/li>\n<li><strong>\u66f4\u65b0\u68c0\u67e5\u51fd\u6570\uff1a<\/strong>\u5982\u679c\u5f53\u524d\u7d20\u6570 i \u672a\u88ab\u4e4b\u524d\u7684\u7d20\u6570\u6807\u8bb0\u4e3a\u53ef\u6574\u9664\uff0c\u5219\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a outer \u7684\u51fd\u6570\uff0c\u5176\u4e2d\u5305\u542b\u5d4c\u5957\u51fd\u6570 inner\u3002inner \u51fd\u6570\u68c0\u67e5 x \u662f\u5426\u88ab i \u6574\u9664\uff0c\u5982\u679c\u4e0d\u662f\uff0c\u5219\u8c03\u7528 outer \u51fd\u6570\u4f7f\u7528\u8f83\u5c0f\u7684\u7d20\u6570\u9012\u5f52\u68c0\u67e5\u3002<\/li>\n<li><strong>\u66f4\u65b0 checker \u51fd\u6570\uff1a<\/strong>\u5c06 checker \u8d4b\u503c\u4e3a\u66f4\u65b0\u540e\u7684 outer \u51fd\u6570\u3002<\/li>\n<li><strong>\u8fd4\u56de\u68c0\u67e5\u51fd\u6570\uff1a<\/strong>\u6700\u7ec8\uff0c\u8fd4\u56de checker \u51fd\u6570\u3002<\/li>\n<\/ol>\n<ul>\n<li><strong>\u793a\u4f8b\uff1a<\/strong><\/li>\n<\/ul>\n<pre>def div_by_primes_under_no_lambda(n):\n\n    def checker(x):\n        return False\n\n    i = 2\n    while i &lt;= n:\n        if not checker(i):\n            def outer(fn, i):\n                def inner(x):\n                    return x % i == 0 else fn(x)\n\n                return inner\n\n            checker = outer(checker, i)\n        i += 1\n    return checker<\/pre>\n<p>\u8fd9\u4e2a\u89e3\u6cd5\u9075\u5faa\u4e86\u9ad8\u9636\u51fd\u6570\u7684\u539f\u7406\uff0c\u521b\u5efa\u4e86\u4e00\u4e2a\u5d4c\u5957\u51fd\u6570\u6765\u6e10\u8fdb\u5f0f\u66f4\u65b0\u68c0\u67e5\u51fd\u6570\u3002\u901a\u8fc7\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u5faa\u73af\uff0c\u5b83\u63d0\u9ad8\u4e86\u6548\u7387\uff0c\u540c\u65f6\u4fdd\u6301\u4e86\u4ee3\u7801\u7684\u7b80\u6d01\u6027\u3002<\/p>\n<p>\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u5982\u4f55\u4f7f\u7528\u9ad8\u9636\u51fd\u6570\u5b9e\u73b0\u5224\u65ad\u4e00\u4e2a\u6570\u662f\u5426\u80fd\u88ab 2 \u5230 n \u4e4b\u95f4\u7684\u7d20\u6570\u6574\u9664\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528\u9ad8\u9636\u51fd\u6570\u5b9e\u73b0\u5224\u65ad\u4e00\u4e2a\u6570\u662f&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-204730","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204730","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=204730"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204730\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204730"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204730"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204730"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}