{"id":40287,"date":"2024-11-26T12:06:45","date_gmt":"2024-11-26T04:06:45","guid":{"rendered":"https:\/\/fwq.ai\/blog\/40287\/"},"modified":"2024-11-26T12:06:45","modified_gmt":"2024-11-26T04:06:45","slug":"java%e4%b8%ad%e4%ba%8c%e4%bd%8d%e6%95%b0%e7%bb%84%e7%9a%84%e9%95%bf%e5%ba%a6%e6%80%8e%e4%b9%88%e7%ae%97","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/40287\/","title":{"rendered":"java\u4e2d\u4e8c\u4f4d\u6570\u7ec4\u7684\u957f\u5ea6\u600e\u4e48\u7b97"},"content":{"rendered":"

\n \u5728 java \u4e2d\uff0c\u901a\u8fc7\u4f7f\u7528 length \u5c5e\u6027\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\uff0c\u4f7f\u7528 [row].length \u5c5e\u6027\u8ba1\u7b97\u7279\u5b9a\u884c\u7684\u5217\u6570\u3002\u4f8b\u5982\uff0cint[][] array = {{1, 2, 3}, {4, 5, 6}}\uff0carray.length \u4e3a 2\uff08\u884c\u6570\uff09\uff0carray[0].length \u4e3a 3\uff08\u7b2c\u4e00\u884c\u7684\u5217\u6570\uff09\u3002\n<\/p><\/blockquote>\n

\"java\u4e2d\u4e8c\u4f4d\u6570\u7ec4\u7684\u957f\u5ea6\u600e\u4e48\u7b97\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u8ba1\u7b97 Java \u4e2d\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6<\/strong><\/p>\n

\u4e8c\u7ef4\u6570\u7ec4\u662f\u5b58\u50a8\u5728\u77e9\u9635\u4e2d\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7531\u884c\u548c\u5217\u7ec4\u6210\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u5206\u522b\u4f7f\u7528 length \u548c [row].length \u5c5e\u6027\u6765\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\u548c\u5217\u6570\u3002<\/p>\n

\u884c\u6570\uff1a<\/strong><\/p>\n

\u8981\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u3002\u6b64\u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u4e2d\u884c\u7684\u6570\u91cf\u3002<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

int[][] array = {{1, 2, 3}, {4, 5, 6}};\nint rowCount = array.length; \/\/ rowCount \u4e3a 2<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5217\u6570\uff1a<\/strong><\/p>\n
\u8981\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7279\u5b9a\u884c\u7684\u5217\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 [row].length \u5c5e\u6027\uff0c\u5176\u4e2d row \u662f\u8981\u68c0\u67e5\u7684\u884c\u53f7\u3002\u6b64\u5c5e\u6027\u8fd4\u56de\u6307\u5b9a\u884c\u4e2d\u7684\u5217\u6570\u3002<\/p>\n
int[][] array = {{1, 2, 3}, {4, 5, 6}};\nint columnCount = array[0].length; \/\/ columnCount \u4e3a 3\uff08\u7b2c\u4e00\u884c\uff09<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n
int[][] array = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};\n\nint rowCount = array.length; \/\/ rowCount \u4e3a 3\uff08\u884c\u7684\u6570\u91cf\uff09\nint columnCount = array[0].length; \/\/ columnCount \u4e3a 3\uff08\u7b2c\u4e00\u884c\u7684\u5217\u7684\u6570\u91cf\uff09\n\nSystem.out.println(\"\u884c\u6570\uff1a\" + rowCount);\nSystem.out.println(\"\u5217\u6570\uff1a\" + columnCount);\n\n\/\/ \u8f93\u51fa\uff1a\n\/\/ \u884c\u6570\uff1a3\n\/\/ \u5217\u6570\uff1a3<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6ce8\u610f\uff1a<\/strong><\/p>\n
    \n
  • \u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u884c\u5fc5\u987b\u5177\u6709\u76f8\u540c\u7684\u5217\u6570\u3002<\/li>\n
  • \u5bf9\u4e8e\u7a7a\u6570\u7ec4\uff0clength \u5c5e\u6027\u8fd4\u56de 0\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u4e8c\u4f4d\u6570\u7ec4\u7684\u957f\u5ea6\u600e\u4e48\u7b97\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":"
    \u5728 java \u4e2d\uff0c\u901a\u8fc7\u4f7f\u7528 length \u5c5e\u6027\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\uff0c\u4f7f\u7528 [row].length \u5c5e\u6027\u8ba1\u7b97\u7279\u5b9a\u884c\u7684\u5217\u6570\u3002\u4f8b\u5982\uff0cint[][] array = {{1, 2, 3}, {4, 5, 6}}\uff0carray.length \u4e3a 2\uff08\u884c\u6570\uff09\uff0carray[0].length \u4e3a 3\uff08\u7b2c\u4e00\u884c\u7684\u5217\u6570\uff09\u3002 \u5982\u4f55\u8ba1\u7b97 Java \u4e2d\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6 \u4e8c\u7ef4\u6570\u7ec4\u662f\u5b58\u50a8\u5728\u77e9\u9635\u4e2d\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7531\u884c\u548c\u5217\u7ec4\u6210\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u5206\u522b\u4f7f\u7528 length \u548c [row].length \u5c5e\u6027\u6765\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\u548c\u5217\u6570\u3002 \u884c\u6570\uff1a \u8981\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u3002\u6b64\u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u4e2d\u884c\u7684\u6570\u91cf\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[][] array = {{1, 2, 3}, {4, 5, 6}}; int rowCount = array.length; \/\/ rowCount \u4e3a 2 \u767b\u5f55\u540e\u590d\u5236 \u5217\u6570\uff1a \u8981\u8ba1\u7b97\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7279\u5b9a\u884c\u7684\u5217\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 [row].length […]<\/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-40287","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40287","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=40287"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40287\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=40287"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=40287"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=40287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}