{"id":66914,"date":"2025-05-03T10:31:33","date_gmt":"2025-05-03T02:31:33","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66914\/"},"modified":"2025-05-03T10:31:33","modified_gmt":"2025-05-03T02:31:33","slug":"java%e4%b8%ad%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e8%ae%a1%e7%ae%97%e4%b8%aa%e6%95%b0-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66914\/","title":{"rendered":"Java\u4e2d\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u8ba1\u7b97\u4e2a\u6570"},"content":{"rendered":"<blockquote><p>\n  \u5728java\u4e2d\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u4e2a\u6570\uff1a\u83b7\u53d6\u5916\u5c42\u6570\u7ec4\u7684\u884c\u6570\u3002\u5bf9\u4e8e\u6bcf\u4e00\u884c\uff0c\u83b7\u53d6\u5185\u5c42\u6570\u7ec4\u7684\u5217\u6570\u3002\u5c06\u6240\u6709\u5185\u5c42\u6570\u7ec4\u7684\u957f\u5ea6\u76f8\u52a0\uff0c\u5f97\u5230\u5143\u7d20\u603b\u6570\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/17\/2024111718514998931.jpg\" class=\"aligncenter\" title=\"Java\u4e2d\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u8ba1\u7b97\u4e2a\u6570\u63d2\u56fe\" alt=\"Java\u4e2d\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u8ba1\u7b97\u4e2a\u6570\u63d2\u56fe\" \/><\/p>\n<p><strong>Java\u4e2d\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u4e2a\u6570<\/strong><\/p>\n<p>\u5728Java\u4e2d\uff0c\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4e2a\u6570\u975e\u5e38\u7b80\u5355\uff1a<\/p>\n<p><strong>\u65b9\u6cd5<\/strong><\/p>\n<ol>\n<li>\u4f7f\u7528length\u5c5e\u6027\u83b7\u53d6\u5916\u5c42\u6570\u7ec4\u7684\u957f\u5ea6\uff08\u884c\u6570\uff09\u3002<\/li>\n<li>\u5bf9\u4e8e\u6bcf\u4e00\u884c\uff0c\u518d\u4f7f\u7528length\u5c5e\u6027\u83b7\u53d6\u5185\u5c42\u6570\u7ec4\u7684\u957f\u5ea6\uff08\u5217\u6570\uff09\u3002<\/li>\n<li>\u5c06\u6240\u6709\u5185\u5c42\u6570\u7ec4\u7684\u957f\u5ea6\u76f8\u52a0\uff0c\u5373\u53ef\u5f97\u5230\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u603b\u6570\u3002<\/li>\n<\/ol>\n<p><strong>\u793a\u4f8b\u4ee3\u7801<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[][] myArray = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};\n\n\/\/ \u8ba1\u7b97\u5916\u5c42\u6570\u7ec4\u7684\u884c\u6570\nint numRows = myArray.length;\n\n\/\/ \u53d8\u91cf\u7528\u4e8e\u5b58\u50a8\u5143\u7d20\u603b\u6570\nint totalElements = 0;\n\n\/\/ \u904d\u5386\u6bcf\u4e00\u884c\nfor (int i = 0; i &lt; numRows; i++) {\n    \/\/ \u8ba1\u7b97\u5185\u5c42\u6570\u7ec4\u7684\u5217\u6570\n    int numCols = myArray[i].length;\n    \n    \/\/ \u5c06\u5217\u6570\u6dfb\u52a0\u5230\u5143\u7d20\u603b\u6570\u4e2d\n    totalElements += numCols;\n}\n\n\/\/ \u8f93\u51fa\u5143\u7d20\u603b\u6570\nSystem.out.println(\"\u5143\u7d20\u603b\u6570\uff1a\" + totalElements);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u8f93\u51fa<\/strong><\/p>\n<pre>\u5143\u7d20\u603b\u6570\uff1a9<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fJava\u4e2d\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u8ba1\u7b97\u4e2a\u6570\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>\u5728java\u4e2d\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u4e2a\u6570\uff1a\u83b7\u53d6\u5916\u5c42\u6570\u7ec4\u7684\u884c\u6570\u3002\u5bf9\u4e8e\u6bcf\u4e00\u884c\uff0c\u83b7\u53d6\u5185\u5c42\u6570\u7ec4\u7684\u5217\u6570\u3002\u5c06\u6240\u6709\u5185\u5c42\u6570\u7ec4\u7684\u957f\u5ea6\u76f8\u52a0\uff0c\u5f97\u5230\u5143\u7d20\u603b\u6570\u3002 Java\u4e2d\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u4e2a\u6570 \u5728Java\u4e2d\uff0c\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4e2a\u6570\u975e\u5e38\u7b80\u5355\uff1a \u65b9\u6cd5 \u4f7f\u7528length\u5c5e\u6027\u83b7\u53d6\u5916\u5c42\u6570\u7ec4\u7684\u957f\u5ea6\uff08\u884c\u6570\uff09\u3002 \u5bf9\u4e8e\u6bcf\u4e00\u884c\uff0c\u518d\u4f7f\u7528length\u5c5e\u6027\u83b7\u53d6\u5185\u5c42\u6570\u7ec4\u7684\u957f\u5ea6\uff08\u5217\u6570\uff09\u3002 \u5c06\u6240\u6709\u5185\u5c42\u6570\u7ec4\u7684\u957f\u5ea6\u76f8\u52a0\uff0c\u5373\u53ef\u5f97\u5230\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u603b\u6570\u3002 \u793a\u4f8b\u4ee3\u7801 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[][] myArray = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; \/\/ \u8ba1\u7b97\u5916\u5c42\u6570\u7ec4\u7684\u884c\u6570 int numRows = myArray.length; \/\/ \u53d8\u91cf\u7528\u4e8e\u5b58\u50a8\u5143\u7d20\u603b\u6570 int totalElements = 0; \/\/ \u904d\u5386\u6bcf\u4e00\u884c for (int i = 0; i &lt; numRows; i++) { \/\/ \u8ba1\u7b97\u5185\u5c42\u6570\u7ec4\u7684\u5217\u6570 int numCols = myArray[i].length; \/\/ \u5c06\u5217\u6570\u6dfb\u52a0\u5230\u5143\u7d20\u603b\u6570\u4e2d totalElements += [&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-66914","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66914","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=66914"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66914\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66914"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66914"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}