{"id":97927,"date":"2024-03-21T22:47:38","date_gmt":"2024-03-21T13:47:38","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e9%80%86%e3%81%ab%e3%83%97%e3%83%aa%e3%83%b3%e3%83%88%e8%a1%a8%e7%a4%ba%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/"},"modified":"2024-03-27T17:32:16","modified_gmt":"2024-03-27T08:32:16","slug":"java%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e9%80%86%e3%81%ab%e3%83%97%e3%83%aa%e3%83%b3%e3%83%88%e8%a1%a8%e7%a4%ba%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e9%80%86%e3%81%ab%e3%83%97%e3%83%aa%e3%83%b3%e3%83%88%e8%a1%a8%e7%a4%ba%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"Java\u6587\u5b57\u5217\u3092\u9006\u306b\u30d7\u30ea\u30f3\u30c8\u8868\u793a\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>\u6587\u5b57\u5217\u3092\u53cd\u8ee2\u3057\u305f\u3044\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059:<\/p>\n<p>StringBuilder\u30af\u30e9\u30b9\u306ereverse()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">str<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">\"Hello World\"<\/span>;\r\n<span class=\"hljs-type\">StringBuilder<\/span> <span class=\"hljs-variable\">sb<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">StringBuilder<\/span>(str);\r\nsb.reverse();\r\n<span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">reversedStr<\/span> <span class=\"hljs-operator\">=<\/span> sb.toString();\r\nSystem.out.println(reversedStr);\r\n<\/code><\/pre>\n<p>\u65b9\u6cd52\uff1a\u6587\u5b57\u914d\u5217\u3068\u30eb\u30fc\u30d7\u3092\u4f7f\u7528\u3057\u3066<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">str<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">\"Hello World\"<\/span>;\r\n<span class=\"hljs-type\">char<\/span>[] arr = str.toCharArray();\r\n<span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">i<\/span> <span class=\"hljs-operator\">=<\/span> arr.length - <span class=\"hljs-number\">1<\/span>; i &gt;= <span class=\"hljs-number\">0<\/span>; i--) {\r\n    System.out.print(arr[i]);\r\n}\r\nSystem.out.println();\r\n<\/code><\/pre>\n<p>\u65b9\u6cd53\uff1a\u518d\u5e30\u3092\u4f7f\u3046<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> String <span class=\"hljs-title function_\">reverseString<\/span><span class=\"hljs-params\">(String str)<\/span> {\r\n    <span class=\"hljs-keyword\">if<\/span> (str.isEmpty()) {\r\n        <span class=\"hljs-keyword\">return<\/span> str;\r\n    }\r\n    <span class=\"hljs-keyword\">return<\/span> reverseString(str.substring(<span class=\"hljs-number\">1<\/span>)) + str.charAt(<span class=\"hljs-number\">0<\/span>);\r\n}\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> {\r\n    <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">str<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">\"Hello World\"<\/span>;\r\n    <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">reversedStr<\/span> <span class=\"hljs-operator\">=<\/span> reverseString(str);\r\n    System.out.println(reversedStr);\r\n}\r\n<\/code><\/pre>\n<p>\u305d\u308c\u305e\u308c\u306e\u65b9\u6cd5\u3067\u6587\u5b57\u5217\u3092\u9006\u5411\u304d\u306b\u51fa\u529b\u3067\u304d\u308b\u306e\u3067\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u65b9\u6cd5\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u5b57\u5217\u3092\u53cd\u8ee2\u3057\u305f\u3044\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059: StringBuilder\u30af\u30e9\u30b9\u306ereverse()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b String str = &#8220;Hello World&#8221;; StringBuilder sb = new [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-97927","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) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java\u6587\u5b57\u5217\u3092\u9006\u306b\u30d7\u30ea\u30f3\u30c8\u8868\u793a\u3059\u308b\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u6587\u5b57\u5217\u3092\u9006\u306b\u30d7\u30ea\u30f3\u30c8\u8868\u793a\u3059\u308b\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u6587\u5b57\u5217\u3092\u9006\u306b\u30d7\u30ea\u30f3\u30c8\u8868\u793a\u3059\u308b\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"\u6587\u5b57\u5217\u3092\u53cd\u8ee2\u3057\u305f\u3044\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059: StringBuilder\u30af\u30e9\u30b9\u306ereverse()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b String str = &quot;Hello World&quot;; 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