{"id":35497,"date":"2024-11-26T15:41:25","date_gmt":"2024-11-26T07:41:25","guid":{"rendered":"https:\/\/fwq.ai\/blog\/35497\/"},"modified":"2024-11-26T15:41:25","modified_gmt":"2024-11-26T07:41:25","slug":"java%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84%e8%a1%8c%e5%88%97%e6%80%8e%e4%b9%88%e7%9c%8b","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/35497\/","title":{"rendered":"java\u4e8c\u7ef4\u6570\u7ec4\u884c\u5217\u600e\u4e48\u770b"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u7684\u4e8c\u7ef4\u6570\u7ec4\u8868\u793a\u4e3a\u8868\u683c\uff0c\u7531\u884c\u548c\u5217\u7ec4\u6210\uff0c\u4f7f\u7528\u4e24\u4e2a\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20\u3002\u884c\u6570\u901a\u8fc7 array2d.length \u5c5e\u6027\u83b7\u53d6\uff0c\u5217\u6570\u901a\u8fc7 array2d[0].length \u5c5e\u6027\u83b7\u53d6\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/04\/2024110404211983312.jpg\" class=\"aligncenter\" title=\"java\u4e8c\u7ef4\u6570\u7ec4\u884c\u5217\u600e\u4e48\u770b\u63d2\u56fe\" alt=\"java\u4e8c\u7ef4\u6570\u7ec4\u884c\u5217\u600e\u4e48\u770b\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5728 Java \u4e2d\uff0c\u5982\u4f55\u7406\u89e3\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u548c\u5217<\/strong><\/p>\n<p>\u4e8c\u7ef4\u6570\u7ec4\u662f\u6570\u636e\u7ed3\u6784\u4e2d\u7684\u4e00\u79cd\u7279\u6b8a\u7c7b\u578b\uff0c\u5b83\u5b58\u50a8\u7684\u6570\u636e\u53ef\u4ee5\u770b\u4f5c\u662f\u4e00\u5f20\u8868\u683c\uff0c\u7531\u884c\u548c\u5217\u6784\u6210\u3002\u5728 Java \u4e2d\uff0c\u4e8c\u7ef4\u6570\u7ec4\u7684\u5b9a\u4e49\u7c7b\u4f3c\u4e8e\u4e00\u7ef4\u6570\u7ec4\uff0c\u53ea\u662f\u591a\u4e86\u4e00\u5c42\u7ef4\u5ea6\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>int[][] array2D = new int[num_rows][num_cols];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5176\u4e2d\uff0cnum_rows \u8868\u793a\u884c\u6570\uff0cnum_cols \u8868\u793a\u5217\u6570\u3002<\/p>\n<p><strong>\u5982\u4f55\u8bbf\u95ee\u5143\u7d20<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u8981\u8bbf\u95ee\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff0c\u9700\u8981\u4f7f\u7528\u4e24\u4e2a\u7d22\u5f15\uff1a\u4e00\u4e2a\u8868\u793a\u884c\u7d22\u5f15\uff0c\u4e00\u4e2a\u8868\u793a\u5217\u7d22\u5f15\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>array2D[row_index][column_index]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4f8b\u5982\uff0c\u8981\u8bbf\u95ee\u7b2c 3 \u884c\u7b2c 2 \u5217\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u5199\u6210\uff1a<\/p>\n<pre>array2D[2][1]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u5982\u4f55\u786e\u5b9a\u884c\u6570\u548c\u5217\u6570<\/strong><\/p>\n<p>\u8981\u786e\u5b9a\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\uff1a<\/p>\n<pre>int num_rows = array2D.length;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8981\u786e\u5b9a\u4e8c\u7ef4\u6570\u7ec4\u7684\u5217\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u7684\u7b2c\u4e8c\u4e2a\u7ef4\u5ea6\uff1a<\/p>\n<pre>int num_cols = array2D[0].length;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e8c\u7ef4\u6570\u7ec4\u884c\u5217\u600e\u4e48\u770b\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\u7684\u4e8c\u7ef4\u6570\u7ec4\u8868\u793a\u4e3a\u8868\u683c\uff0c\u7531\u884c\u548c\u5217\u7ec4\u6210\uff0c\u4f7f\u7528\u4e24\u4e2a\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20\u3002\u884c\u6570\u901a\u8fc7 array2d.length \u5c5e\u6027\u83b7\u53d6\uff0c\u5217\u6570\u901a\u8fc7 array2d[0].length \u5c5e\u6027\u83b7\u53d6\u3002 \u5728 Java \u4e2d\uff0c\u5982\u4f55\u7406\u89e3\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u548c\u5217 \u4e8c\u7ef4\u6570\u7ec4\u662f\u6570\u636e\u7ed3\u6784\u4e2d\u7684\u4e00\u79cd\u7279\u6b8a\u7c7b\u578b\uff0c\u5b83\u5b58\u50a8\u7684\u6570\u636e\u53ef\u4ee5\u770b\u4f5c\u662f\u4e00\u5f20\u8868\u683c\uff0c\u7531\u884c\u548c\u5217\u6784\u6210\u3002\u5728 Java \u4e2d\uff0c\u4e8c\u7ef4\u6570\u7ec4\u7684\u5b9a\u4e49\u7c7b\u4f3c\u4e8e\u4e00\u7ef4\u6570\u7ec4\uff0c\u53ea\u662f\u591a\u4e86\u4e00\u5c42\u7ef4\u5ea6\uff0c\u5982\u4e0b\u6240\u793a\uff1a int[][] array2D = new int[num_rows][num_cols]; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff0cnum_rows \u8868\u793a\u884c\u6570\uff0cnum_cols \u8868\u793a\u5217\u6570\u3002 \u5982\u4f55\u8bbf\u95ee\u5143\u7d20 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u8981\u8bbf\u95ee\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff0c\u9700\u8981\u4f7f\u7528\u4e24\u4e2a\u7d22\u5f15\uff1a\u4e00\u4e2a\u8868\u793a\u884c\u7d22\u5f15\uff0c\u4e00\u4e2a\u8868\u793a\u5217\u7d22\u5f15\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a array2D[row_index][column_index] \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff0c\u8981\u8bbf\u95ee\u7b2c 3 \u884c\u7b2c 2 \u5217\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u5199\u6210\uff1a array2D[2][1] \u767b\u5f55\u540e\u590d\u5236 \u5982\u4f55\u786e\u5b9a\u884c\u6570\u548c\u5217\u6570 \u8981\u786e\u5b9a\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\uff1a int num_rows = array2D.length; \u767b\u5f55\u540e\u590d\u5236 \u8981\u786e\u5b9a\u4e8c\u7ef4\u6570\u7ec4\u7684\u5217\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u7684\u7b2c\u4e8c\u4e2a\u7ef4\u5ea6\uff1a int num_cols = array2D[0].length; \u767b\u5f55\u540e\u590d\u5236 \u4ee5\u4e0a\u5c31\u662fjava\u4e8c\u7ef4\u6570\u7ec4\u884c\u5217\u600e\u4e48\u770b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/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-35497","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35497","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=35497"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35497\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=35497"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=35497"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=35497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}