{"id":38329,"date":"2024-11-26T10:55:35","date_gmt":"2024-11-26T02:55:35","guid":{"rendered":"https:\/\/fwq.ai\/blog\/38329\/"},"modified":"2024-11-26T10:55:35","modified_gmt":"2024-11-26T02:55:35","slug":"java%e6%80%8e%e4%b9%88%e5%ae%9a%e4%b9%89%e4%b8%80%e4%b8%aa%e5%be%aa%e7%8e%af%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/38329\/","title":{"rendered":"java\u600e\u4e48\u5b9a\u4e49\u4e00\u4e2a\u5faa\u73af\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  java\u4e2d\u5b9a\u4e49\u5faa\u73af\u6570\u7ec4\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u6a21\u5757\u8fd0\u7b97\u7b26%\uff0c\u5c06\u7d22\u5f15\u503c\u5bf9\u6570\u7ec4\u957f\u5ea6\u53d6\u4f59\uff0c\u5f97\u5230\u5faa\u73af\u540e\u7684\u7d22\u5f15\u3002\u5faa\u73af\u6570\u7ec4\u7684\u7279\u70b9\u662f\u5f53\u7d22\u5f15\u8d85\u51fa\u8fb9\u754c\u65f6\uff0c\u4f1a\u81ea\u52a8\u5faa\u73af\u5230\u6570\u7ec4\u5f00\u5934\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/14\/2024111413102880133.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u5b9a\u4e49\u4e00\u4e2a\u5faa\u73af\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u5b9a\u4e49\u4e00\u4e2a\u5faa\u73af\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e2d\u5b9a\u4e49\u5faa\u73af\u6570\u7ec4\u7684\u65b9\u6cd5<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u6a21\u5757\u8fd0\u7b97\u7b26 % \u6765\u5b9a\u4e49\u5faa\u73af\u6570\u7ec4\u3002\u5faa\u73af\u6570\u7ec4\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6570\u7ec4\uff0c\u5f53\u7d22\u5f15\u8d85\u51fa\u6570\u7ec4\u8fb9\u754c\u65f6\uff0c\u5b83\u4f1a\u81ea\u52a8\u5faa\u73af\u5230\u6570\u7ec4\u7684\u5f00\u5934\u3002<\/p>\n<p><strong>\u5b9a\u4e49\u65b9\u6cd5\uff1a<\/strong><\/p>\n<pre>int[] arr = new int[size];\n\nfor (int i = 0; i &lt; arr.length; i++) {\n    arr[i] = i + 1;  \/\/ \u521d\u59cb\u5316\u6570\u7ec4\u5143\u7d20\n}\n\nint index = 5;  \/\/ \u7d22\u5f15\u503c\n\nSystem.out.println(arr[index % arr.length]);  \/\/ \u8f93\u51fa arr[5 % 5]\uff0c\u5373 arr[0]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u5de5\u4f5c\u539f\u7406\uff1a<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ul>\n<li>arr[index % arr.length] \u5c06 index \u53d6\u6a21 arr.length\uff0c\u4ece\u800c\u5f97\u5230\u5faa\u73af\u540e\u7684\u7d22\u5f15\u3002<\/li>\n<li>\u5982\u679c index \u8d85\u51fa\u6570\u7ec4\u8fb9\u754c\uff08\u5373 index &gt;= arr.length\uff09\uff0cindex % arr.length \u4f1a\u8fd4\u56de index \u5bf9 arr.length \u53d6\u6a21\u540e\u7684\u4f59\u6570\uff0c\u5373\u5faa\u73af\u540e\u7684\u7d22\u5f15\u3002<\/li>\n<li>\u5982\u679c index \u5728\u6570\u7ec4\u8fb9\u754c\u5185\uff08\u5373 index <\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<p>\u8003\u8651\u4e00\u4e2a\u5927\u5c0f\u4e3a 5 \u7684\u5faa\u73af\u6570\u7ec4 arr\uff0c\u5176\u4e2d\u5143\u7d20\u503c\u4f9d\u6b21\u4e3a [1, 2, 3, 4, 5]\u3002<\/p>\n<ul>\n<li>arr[0] \u662f\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u7d22\u5f15\u4e3a 0\u3002<\/li>\n<li>arr[4] \u662f\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff0c\u7d22\u5f15\u4e3a 4\u3002<\/li>\n<li>arr[5] \u8d85\u51fa\u6570\u7ec4\u8fb9\u754c\uff0c\u4f7f\u7528\u5faa\u73af\u6570\u7ec4\u7279\u6027\uff0carr[5 % 5] \u8fd4\u56de arr[0]\u3002<\/li>\n<li>arr[-1] \u4f4e\u4e8e\u6570\u7ec4\u8d77\u59cb\u7d22\u5f15\uff0c\u4f7f\u7528\u5faa\u73af\u6570\u7ec4\u7279\u6027\uff0carr[-1 % 5] \u8fd4\u56de arr[4]\u3002<\/li>\n<\/ul>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u5faa\u73af\u6570\u7ec4\u7684\u7d22\u5f15\u5fc5\u987b\u59cb\u7ec8\u4e3a\u975e\u8d1f\u6574\u6570\uff0c\u5426\u5219\u4f1a\u51fa\u73b0\u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u7684\u9519\u8bef\u3002<\/li>\n<li>\u4f7f\u7528\u5faa\u73af\u6570\u7ec4\u65f6\uff0c\u5e94\u786e\u4fdd\u6570\u7ec4\u5143\u7d20\u7684\u987a\u5e8f\u6ee1\u8db3\u5faa\u73af\u9700\u6c42\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5b9a\u4e49\u4e00\u4e2a\u5faa\u73af\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>java\u4e2d\u5b9a\u4e49\u5faa\u73af\u6570\u7ec4\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u6a21\u5757\u8fd0\u7b97\u7b26%\uff0c\u5c06\u7d22\u5f15\u503c\u5bf9\u6570\u7ec4\u957f\u5ea6\u53d6\u4f59\uff0c\u5f97\u5230\u5faa\u73af\u540e\u7684\u7d22\u5f15\u3002\u5faa\u73af\u6570\u7ec4\u7684\u7279\u70b9\u662f\u5f53\u7d22\u5f15\u8d85\u51fa\u8fb9\u754c\u65f6\uff0c\u4f1a\u81ea\u52a8\u5faa\u73af\u5230\u6570\u7ec4\u5f00\u5934\u3002 Java \u4e2d\u5b9a\u4e49\u5faa\u73af\u6570\u7ec4\u7684\u65b9\u6cd5 \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u6a21\u5757\u8fd0\u7b97\u7b26 % \u6765\u5b9a\u4e49\u5faa\u73af\u6570\u7ec4\u3002\u5faa\u73af\u6570\u7ec4\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6570\u7ec4\uff0c\u5f53\u7d22\u5f15\u8d85\u51fa\u6570\u7ec4\u8fb9\u754c\u65f6\uff0c\u5b83\u4f1a\u81ea\u52a8\u5faa\u73af\u5230\u6570\u7ec4\u7684\u5f00\u5934\u3002 \u5b9a\u4e49\u65b9\u6cd5\uff1a int[] arr = new int[size]; for (int i = 0; i &lt; arr.length; i++) { arr[i] = i + 1; \/\/ \u521d\u59cb\u5316\u6570\u7ec4\u5143\u7d20 } int index = 5; \/\/ \u7d22\u5f15\u503c System.out.println(arr[index % arr.length]); \/\/ \u8f93\u51fa arr[5 % 5]\uff0c\u5373 arr[0] \u767b\u5f55\u540e\u590d\u5236 \u5de5\u4f5c\u539f\u7406\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b arr[index % arr.length] \u5c06 index [&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-38329","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38329","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=38329"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38329\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=38329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=38329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=38329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}