{"id":66060,"date":"2025-05-03T11:45:49","date_gmt":"2025-05-03T03:45:49","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66060\/"},"modified":"2025-05-03T11:45:49","modified_gmt":"2025-05-03T03:45:49","slug":"java%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e8%8e%b7%e5%8f%96%e9%95%bf%e5%ba%a6-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66060\/","title":{"rendered":"JAVA\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u83b7\u53d6\u957f\u5ea6"},"content":{"rendered":"<blockquote><p>\n  java\u4e2d\u4e8c\u7ef4\u6570\u7ec4\u957f\u5ea6\u83b7\u53d6\u65b9\u5f0f\uff1a\u83b7\u53d6\u884c\u6570\uff1aint numrows = array.length;\u83b7\u53d6\u5217\u6570\uff1aint numcols = array[0].length;\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/14\/2024111413012951142.jpg\" class=\"aligncenter\" title=\"JAVA\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u83b7\u53d6\u957f\u5ea6\u63d2\u56fe\" alt=\"JAVA\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u83b7\u53d6\u957f\u5ea6\u63d2\u56fe\" \/><\/p>\n<p><strong>JAVA\u4e8c\u7ef4\u6570\u7ec4\u83b7\u53d6\u957f\u5ea6<\/strong><\/p>\n<p>\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\u6307\u7684\u662f\u6570\u7ec4\u4e2d\u884c\u6216\u5217\u7684\u6570\u91cf\u3002\u83b7\u53d6 JAVA \u4e2d\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<p><strong>\u83b7\u53d6\u884c\u6570<\/strong><\/p>\n<pre>int numRows = array.length;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u83b7\u53d6\u5217\u6570<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int numCols = array[0].length;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u793a\u4f8b\u4ee3\u7801<\/strong><\/p>\n<pre>int[][] array = {\n    {1, 2, 3},\n    {4, 5, 6},\n    {7, 8, 9}\n};\n\nint numRows = array.length; \/\/ \u8f93\u51fa\uff1a3\nint numCols = array[0].length; \/\/ \u8f93\u51fa\uff1a3<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u8bf4\u660e<\/strong><\/p>\n<ul>\n<li>numRows \u8868\u793a\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\uff0c\u5373\u5305\u542b\u7684\u5185\u5c42\u6570\u7ec4\u6570\u91cf\u3002<\/li>\n<li>numCols \u8868\u793a\u4e8c\u7ef4\u6570\u7ec4\u7684\u5217\u6570\uff0c\u5373\u5185\u5c42\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002<\/li>\n<li>\u5bf9\u4e8e\u952f\u9f7f\u6570\u7ec4\uff08\u6bcf\u884c\u7684\u5143\u7d20\u6570\u91cf\u4e0d\u540c\uff09\uff0c\u53ea\u80fd\u901a\u8fc7 array[i].length \u7684\u65b9\u5f0f\u52a8\u6001\u83b7\u53d6\u6bcf\u4e00\u884c\u7684\u5b9e\u9645\u5217\u6570\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fJAVA\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u83b7\u53d6\u957f\u5ea6\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\u4e2d\u4e8c\u7ef4\u6570\u7ec4\u957f\u5ea6\u83b7\u53d6\u65b9\u5f0f\uff1a\u83b7\u53d6\u884c\u6570\uff1aint numrows = array.length;\u83b7\u53d6\u5217\u6570\uff1aint numcols = array[0].length; JAVA\u4e8c\u7ef4\u6570\u7ec4\u83b7\u53d6\u957f\u5ea6 \u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\u6307\u7684\u662f\u6570\u7ec4\u4e2d\u884c\u6216\u5217\u7684\u6570\u91cf\u3002\u83b7\u53d6 JAVA \u4e2d\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a \u83b7\u53d6\u884c\u6570 int numRows = array.length; \u767b\u5f55\u540e\u590d\u5236 \u83b7\u53d6\u5217\u6570 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int numCols = array[0].length; \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b\u4ee3\u7801 int[][] array = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} }; int numRows = array.length; \/\/ \u8f93\u51fa\uff1a3 int numCols = array[0].length; \/\/ \u8f93\u51fa\uff1a3 \u767b\u5f55\u540e\u590d\u5236 \u8bf4\u660e numRows \u8868\u793a\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\uff0c\u5373\u5305\u542b\u7684\u5185\u5c42\u6570\u7ec4\u6570\u91cf\u3002 [&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-66060","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66060","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=66060"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66060\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}