{"id":125813,"date":"2024-03-24T20:18:10","date_gmt":"2024-03-24T11:18:10","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/sort-%e3%83%a1%e3%82%bd%e3%83%83%e3%83%89%e3%82%92-java-%e3%81%a7%e4%bd%bf%e3%81%86%e3%81%ab%e3%81%af\/"},"modified":"2024-03-27T21:10:50","modified_gmt":"2024-03-27T12:10:50","slug":"sort-%e3%83%a1%e3%82%bd%e3%83%83%e3%83%89%e3%82%92-java-%e3%81%a7%e4%bd%bf%e3%81%86%e3%81%ab%e3%81%af","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/sort-%e3%83%a1%e3%82%bd%e3%83%83%e3%83%89%e3%82%92-java-%e3%81%a7%e4%bd%bf%e3%81%86%e3%81%ab%e3%81%af\/","title":{"rendered":"sort \u30e1\u30bd\u30c3\u30c9\u3092 Java \u3067\u4f7f\u3046\u306b\u306f"},"content":{"rendered":"<p>Java \u306e sort() \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u914d\u5217\u3084\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u30bd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002sort() \u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u7528\u65b9\u6cd5\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ol>\n<li>\u914d\u5217\u3092\u30bd\u30fc\u30c8\u3059\u308b:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">int<\/span>[] arr = {<span class=\"hljs-number\">5<\/span>, <span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">4<\/span>, <span class=\"hljs-number\">2<\/span>};\r\nArrays.sort(arr);\r\n<\/code><\/pre>\n<ol>\n<li>\u96c6\u5408\u3092\u30bd\u30fc\u30c8\u3059\u308b:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>List&lt;Integer&gt; list = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ArrayList<\/span>&lt;&gt;();\r\nlist.add(<span class=\"hljs-number\">5<\/span>);\r\nlist.add(<span class=\"hljs-number\">3<\/span>);\r\nlist.add(<span class=\"hljs-number\">1<\/span>);\r\nlist.add(<span class=\"hljs-number\">4<\/span>);\r\nlist.add(<span class=\"hljs-number\">2<\/span>);\r\nCollections.sort(list);\r\n<\/code><\/pre>\n<p>`sort()`\u30e1\u30bd\u30c3\u30c9\u306e\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u72ec\u81ea\u306e\u30bd\u30fc\u30c8\u30eb\u30fc\u30eb\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001\u30ab\u30b9\u30bf\u30e0\u30af\u30e9\u30b9\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30bd\u30fc\u30c8\u3059\u308b\u306b\u306f\u3001\u305d\u306e\u30af\u30e9\u30b9\u306e`Comparable`\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u5b9f\u88c5\u3057\u3001`compareTo()`\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Person<\/span> <span class=\"hljs-keyword\">implements<\/span> <span class=\"hljs-title class_\">Comparable<\/span>&lt;Person&gt; {\r\n<span class=\"hljs-keyword\">private<\/span> String name;\r\n<span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-type\">int<\/span> age;\r\n<span class=\"hljs-comment\">\/\/ \u6784\u9020\u51fd\u6570\u3001getter\u548csetter\u65b9\u6cd5\u7b49\u7701\u7565<\/span>\r\n<span class=\"hljs-meta\">@Override<\/span>\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-type\">int<\/span> <span class=\"hljs-title function_\">compareTo<\/span><span class=\"hljs-params\">(Person other)<\/span> {\r\n<span class=\"hljs-comment\">\/\/ \u6839\u636e\u5e74\u9f84\u8fdb\u884c\u6392\u5e8f<\/span>\r\n<span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-built_in\">this<\/span>.age - other.age;\r\n}\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u4f7f\u7528sort()\u65b9\u6cd5\u5bf9Person\u5bf9\u8c61\u8fdb\u884c\u6392\u5e8f<\/span>\r\nList&lt;Person&gt; persons = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ArrayList<\/span>&lt;&gt;();\r\npersons.add(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Person<\/span>(<span class=\"hljs-string\">\"Alice\"<\/span>, <span class=\"hljs-number\">25<\/span>));\r\npersons.add(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Person<\/span>(<span class=\"hljs-string\">\"Bob\"<\/span>, <span class=\"hljs-number\">30<\/span>));\r\npersons.add(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Person<\/span>(<span class=\"hljs-string\">\"Charlie\"<\/span>, <span class=\"hljs-number\">20<\/span>));\r\nCollections.sort(persons);\r\n<\/code><\/pre>\n<p>\u30bd\u30fc\u30c8\u30e1\u30bd\u30c3\u30c9\u306fcompareTo \u30e1\u30bd\u30c3\u30c9\u306e\u8fd4\u308a\u5024\u306b\u57fa\u3065\u3044\u3066 Person \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30bd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java \u306e sort() \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u914d\u5217\u3084\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u30bd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002sort() \u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u7528\u65b9\u6cd5\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 \u914d\u5217\u3092\u30bd\u30fc\u30c8\u3059\u308b: int[] arr = {5, 3, 1, 4, 2};  [&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-125813","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>sort \u30e1\u30bd\u30c3\u30c9\u3092 Java \u3067\u4f7f\u3046\u306b\u306f - 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\/sort-\u30e1\u30bd\u30c3\u30c9\u3092-java-\u3067\u4f7f\u3046\u306b\u306f\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"sort \u30e1\u30bd\u30c3\u30c9\u3092 Java \u3067\u4f7f\u3046\u306b\u306f\" \/>\n<meta property=\"og:description\" content=\"Java \u306e sort() \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u914d\u5217\u3084\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u30bd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002sort() \u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u7528\u65b9\u6cd5\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 \u914d\u5217\u3092\u30bd\u30fc\u30c8\u3059\u308b: int[] arr = {5, 3, 1, 4, 2}; 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