{"id":35002,"date":"2024-11-26T10:47:30","date_gmt":"2024-11-26T02:47:30","guid":{"rendered":"https:\/\/fwq.ai\/blog\/35002\/"},"modified":"2024-11-26T10:47:30","modified_gmt":"2024-11-26T02:47:30","slug":"java%e6%80%8e%e4%b9%88%e6%b1%82%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84%e7%9a%84%e5%a4%a7%e5%b0%8f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/35002\/","title":{"rendered":"java\u600e\u4e48\u6c42\u4e8c\u7ef4\u6570\u7ec4\u7684\u5927\u5c0f"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u5927\u5c0f\uff1a\u884c\u6570\u4e3a\u6570\u7ec4\u7684 length \u5c5e\u6027\u503c\uff0c\u5217\u6570\u4e3a\u4efb\u4e00\u884c\u5143\u7d20\u7684 length \u5c5e\u6027\u503c\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/03\/2024110308124143426.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u6c42\u4e8c\u7ef4\u6570\u7ec4\u7684\u5927\u5c0f\u63d2\u56fe\" alt=\"java\u600e\u4e48\u6c42\u4e8c\u7ef4\u6570\u7ec4\u7684\u5927\u5c0f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u6c42\u4e8c\u7ef4\u6570\u7ec4\u7684\u5927\u5c0f<\/strong><\/p>\n<p>\u6c42\u4e8c\u7ef4\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u5373\u6c42\u5176\u884c\u6570\u548c\u5217\u6570\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7684 length \u5c5e\u6027\u3002<\/p>\n<p><strong>\u884c\u6570<\/strong><\/p>\n<p>\u8981\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int numRows = array.length; \/\/ array \u4e3a\u4e8c\u7ef4\u6570\u7ec4<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u5217\u6570<\/strong><\/p>\n<p>\u8981\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u5217\u6570\uff0c\u9700\u8981\u83b7\u53d6\u6570\u7ec4\u4e2d\u4efb\u4e00\u884c\u5143\u7d20\u7684\u957f\u5ea6\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>int numCols = array[0].length; \/\/ \u5047\u8bbe array \u662f\u4e0d\u4e3a\u7a7a\u4e14\u5143\u7d20\u6570\u4e0d\u4e3a 0 \u7684\u4e8c\u7ef4\u6570\u7ec4<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u4e8c\u7ef4\u6570\u7ec4\uff1a<\/p>\n<pre>int[][] array = {\n    {1, 2, 3},\n    {4, 5, 6},\n    {7, 8, 9}\n};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8981\u83b7\u53d6\u8be5\u6570\u7ec4\u7684\u884c\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre>int numRows = array.length; \/\/ \u7ed3\u679c\u4e3a 3<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8981\u83b7\u53d6\u8be5\u6570\u7ec4\u7684\u5217\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre>int numCols = array[0].length; \/\/ \u7ed3\u679c\u4e3a 3<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u6c42\u4e8c\u7ef4\u6570\u7ec4\u7684\u5927\u5c0f\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\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u5927\u5c0f\uff1a\u884c\u6570\u4e3a\u6570\u7ec4\u7684 length \u5c5e\u6027\u503c\uff0c\u5217\u6570\u4e3a\u4efb\u4e00\u884c\u5143\u7d20\u7684 length \u5c5e\u6027\u503c\u3002 \u5982\u4f55\u6c42\u4e8c\u7ef4\u6570\u7ec4\u7684\u5927\u5c0f \u6c42\u4e8c\u7ef4\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u5373\u6c42\u5176\u884c\u6570\u548c\u5217\u6570\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7684 length \u5c5e\u6027\u3002 \u884c\u6570 \u8981\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int numRows = array.length; \/\/ array \u4e3a\u4e8c\u7ef4\u6570\u7ec4 \u767b\u5f55\u540e\u590d\u5236 \u5217\u6570 \u8981\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u5217\u6570\uff0c\u9700\u8981\u83b7\u53d6\u6570\u7ec4\u4e2d\u4efb\u4e00\u884c\u5143\u7d20\u7684\u957f\u5ea6\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a int numCols = array[0].length; \/\/ \u5047\u8bbe array \u662f\u4e0d\u4e3a\u7a7a\u4e14\u5143\u7d20\u6570\u4e0d\u4e3a 0 \u7684\u4e8c\u7ef4\u6570\u7ec4 \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b \u8003\u8651\u4ee5\u4e0b\u4e8c\u7ef4\u6570\u7ec4\uff1a int[][] array = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} }; \u767b\u5f55\u540e\u590d\u5236 \u8981\u83b7\u53d6\u8be5\u6570\u7ec4\u7684\u884c\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\uff1a int [&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-35002","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35002","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=35002"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35002\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=35002"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=35002"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=35002"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}