{"id":9419,"date":"2024-03-15T02:56:29","date_gmt":"2024-03-14T17:56:29","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/python%e3%81%a72%e5%88%86%e6%8e%a2%e7%b4%a2%e3%82%a2%e3%83%ab%e3%82%b4%e3%83%aa%e3%82%ba%e3%83%a0%e3%82%92%e6%9b%b8%e3%81%8f%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f\/"},"modified":"2024-03-20T21:55:09","modified_gmt":"2024-03-20T12:55:09","slug":"python%e3%81%a72%e5%88%86%e6%8e%a2%e7%b4%a2%e3%82%a2%e3%83%ab%e3%82%b4%e3%83%aa%e3%82%ba%e3%83%a0%e3%82%92%e6%9b%b8%e3%81%8f%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/python%e3%81%a72%e5%88%86%e6%8e%a2%e7%b4%a2%e3%82%a2%e3%83%ab%e3%82%b4%e3%83%aa%e3%82%ba%e3%83%a0%e3%82%92%e6%9b%b8%e3%81%8f%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f\/","title":{"rendered":"Python\u30672\u5206\u63a2\u7d22\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u66f8\u304f\u65b9\u6cd5\u306f\uff1f"},"content":{"rendered":"<p>Python\u3067\u66f8\u304b\u308c\u305f2\u5206\u63a2\u7d22\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u4f8b\u3092\u4ee5\u4e0b\u306b\u793a\u3059\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">binary_search<\/span>(<span class=\"hljs-params\">arr, target<\/span>):\r\n    low = <span class=\"hljs-number\">0<\/span>\r\n    high = <span class=\"hljs-built_in\">len<\/span>(arr) - <span class=\"hljs-number\">1<\/span>\r\n\r\n    <span class=\"hljs-keyword\">while<\/span> low &lt;= high:\r\n        mid = (low + high) \/\/ <span class=\"hljs-number\">2<\/span>\r\n        <span class=\"hljs-keyword\">if<\/span> arr[mid] == target:\r\n            <span class=\"hljs-keyword\">return<\/span> mid\r\n        <span class=\"hljs-keyword\">elif<\/span> arr[mid] &lt; target:\r\n            low = mid + <span class=\"hljs-number\">1<\/span>\r\n        <span class=\"hljs-keyword\">else<\/span>:\r\n            high = mid - <span class=\"hljs-number\">1<\/span>\r\n\r\n    <span class=\"hljs-keyword\">return<\/span> -<span class=\"hljs-number\">1<\/span>\r\n\r\n<span class=\"hljs-comment\"># \u6d4b\u8bd5<\/span>\r\narr = [<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">4<\/span>, <span class=\"hljs-number\">5<\/span>, <span class=\"hljs-number\">6<\/span>, <span class=\"hljs-number\">7<\/span>, <span class=\"hljs-number\">8<\/span>, <span class=\"hljs-number\">9<\/span>, <span class=\"hljs-number\">10<\/span>]\r\ntarget = <span class=\"hljs-number\">5<\/span>\r\nresult = binary_search(arr, target)\r\n<span class=\"hljs-keyword\">if<\/span> result != -<span class=\"hljs-number\">1<\/span>:\r\n    <span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">f\"\u76ee\u6807\u5143\u7d20 <span class=\"hljs-subst\">{target}<\/span> \u5728\u6570\u7ec4\u4e2d\u7684\u7d22\u5f15\u4f4d\u7f6e\u4e3a <span class=\"hljs-subst\">{result}<\/span>\"<\/span>)\r\n<span class=\"hljs-keyword\">else<\/span>:\r\n    <span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">\"\u76ee\u6807\u5143\u7d20\u4e0d\u5728\u6570\u7ec4\u4e2d\"<\/span>)\r\n<\/code><\/pre>\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001binary_search\u95a2\u6570\u306f\u3001\u30bd\u30fc\u30c8\u3055\u308c\u305f\u914d\u5217arr\u3068\u76ee\u6a19\u8981\u7d20target\u3092\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u3001\u76ee\u6a19\u8981\u7d20\u304c\u914d\u5217\u5185\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4f4d\u7f6e\u3092\u8fd4\u3057\u307e\u3059\u3002\u76ee\u6a19\u8981\u7d20\u304c\u914d\u5217\u306b\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f-1\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Python\u3067\u66f8\u304b\u308c\u305f2\u5206\u63a2\u7d22\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u4f8b\u3092\u4ee5\u4e0b\u306b\u793a\u3059\uff1a def binary_search(arr, target): low = 0 high = len(arr) &#8211; 1 while low &lt;= hig [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9419","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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