{"id":64589,"date":"2025-05-03T14:24:49","date_gmt":"2025-05-03T06:24:49","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64589\/"},"modified":"2025-05-03T14:24:49","modified_gmt":"2025-05-03T06:24:49","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%88%86%e5%89%b2%e4%b8%ba%e5%87%a0%e4%b8%aa%e7%b4%a0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64589\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48\u5206\u5272\u4e3a\u51e0\u4e2a\u7d20\u7ec4"},"content":{"rendered":"<blockquote><p>\n  java \u63d0\u4f9b\u591a\u79cd\u6570\u7ec4\u5206\u5272\u65b9\u6cd5\uff1aarray.copyofrange \u521b\u5efa\u6307\u5b9a\u8303\u56f4\u7684\u65b0\u6570\u7ec4\u3002arrays.split \u6839\u636e\u5206\u9694\u7b26\u5143\u7d20\u5206\u5272\u6570\u7ec4\u3002java 8 streams \u53ef\u6309\u6761\u4ef6\u5206\u7ec4\u5206\u5272\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/04\/2024110402343780555.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u600e\u4e48\u5206\u5272\u4e3a\u51e0\u4e2a\u7d20\u7ec4\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u600e\u4e48\u5206\u5272\u4e3a\u51e0\u4e2a\u7d20\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u6570\u7ec4\u5206\u5272<\/strong><\/p>\n<p><strong>\u95ee\u9898\uff1a<\/strong>\u5982\u4f55\u5c06\u4e00\u4e2a Java \u6570\u7ec4\u5206\u5272\u4e3a\u591a\u4e2a\u5b50\u6570\u7ec4\uff1f<\/p>\n<p><strong>\u56de\u7b54\uff1a<\/strong><\/p>\n<p>Java \u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u5c06\u6570\u7ec4\u5206\u5272\u4e3a\u5b50\u6570\u7ec4\u3002\u4ee5\u4e0b\u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p><strong>Array.copyOfRange(int[] array, int start, int end)<\/strong><\/p>\n<ul>\n<li>\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5305\u542b\u4ece\u6307\u5b9a\u8d77\u59cb\u7d22\u5f15 start \u5230\u6307\u5b9a\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\uff09end \u4e4b\u95f4\u7684\u5143\u7d20\u3002<\/li>\n<\/ul>\n<p><strong>\u4f8b\u5982\uff1a<\/strong><\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\nint[] subArr = Arrays.copyOfRange(arr, 2, 4); \/\/ [3, 4]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>Arrays.split(int[] array, int delimiter)<\/strong><\/p>\n<ul>\n<li>\u5c06\u6570\u7ec4\u6309\u6307\u5b9a\u5206\u9694\u7b26\u5143\u7d20\u5206\u5272\u4e3a\u591a\u4e2a\u5b50\u6570\u7ec4\u3002\u5206\u9694\u7b26\u4e0d\u4f1a\u5305\u542b\u5728\u5b50\u6570\u7ec4\u4e2d\u3002<\/li>\n<\/ul>\n<p><strong>\u4f8b\u5982\uff1a<\/strong><\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5, -1, 6, 7};\nint[] subArrs = Arrays.split(arr, -1); \/\/ [[1, 2, 3, 4, 5], [6, 7]]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>Java 8 Streams<\/strong><\/p>\n<ul>\n<li>\u5bf9\u4e8e Java 8 \u53ca\u66f4\u9ad8\u7248\u672c\uff0c\u53ef\u4ee5\u4f7f\u7528 Stream \u5206\u5272\u6570\u7ec4\uff1a<\/li>\n<\/ul>\n<p><strong>\u4f8b\u5982\uff1a<\/strong><\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\nList&lt;int[]&gt; subArrs = Arrays.stream(arr)\n        .collect(Collectors.groupingBy(n -&gt; n % 2 == 0 ? \"Even\" : \"Odd\"))\n        .values()\n        .stream()\n        .map(list -&gt; list.stream().mapToInt(n -&gt; n).toArray())\n        .collect(Collectors.toList());<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u65b9\u6cd5\u53ef\u6839\u636e\u5b9e\u9645\u9700\u6c42\u6765\u9009\u62e9\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u5206\u5272\u4e3a\u51e0\u4e2a\u7d20\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>java \u63d0\u4f9b\u591a\u79cd\u6570\u7ec4\u5206\u5272\u65b9\u6cd5\uff1aarray.copyofrange \u521b\u5efa\u6307\u5b9a\u8303\u56f4\u7684\u65b0\u6570\u7ec4\u3002arrays.split \u6839\u636e\u5206\u9694\u7b26\u5143\u7d20\u5206\u5272\u6570\u7ec4\u3002java 8 streams \u53ef\u6309\u6761\u4ef6\u5206\u7ec4\u5206\u5272\u6570\u7ec4\u3002 Java \u6570\u7ec4\u5206\u5272 \u95ee\u9898\uff1a\u5982\u4f55\u5c06\u4e00\u4e2a Java \u6570\u7ec4\u5206\u5272\u4e3a\u591a\u4e2a\u5b50\u6570\u7ec4\uff1f \u56de\u7b54\uff1a Java \u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u5c06\u6570\u7ec4\u5206\u5272\u4e3a\u5b50\u6570\u7ec4\u3002\u4ee5\u4e0b\u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Array.copyOfRange(int[] array, int start, int end) \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5305\u542b\u4ece\u6307\u5b9a\u8d77\u59cb\u7d22\u5f15 start \u5230\u6307\u5b9a\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\uff09end \u4e4b\u95f4\u7684\u5143\u7d20\u3002 \u4f8b\u5982\uff1a int[] arr = {1, 2, 3, 4, 5}; int[] subArr = Arrays.copyOfRange(arr, 2, 4); \/\/ [3, 4] \u767b\u5f55\u540e\u590d\u5236 Arrays.split(int[] array, int delimiter) \u5c06\u6570\u7ec4\u6309\u6307\u5b9a\u5206\u9694\u7b26\u5143\u7d20\u5206\u5272\u4e3a\u591a\u4e2a\u5b50\u6570\u7ec4\u3002\u5206\u9694\u7b26\u4e0d\u4f1a\u5305\u542b\u5728\u5b50\u6570\u7ec4\u4e2d\u3002 \u4f8b\u5982\uff1a int[] arr = {1, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-64589","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64589","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=64589"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64589\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}