{"id":34897,"date":"2024-11-26T16:03:57","date_gmt":"2024-11-26T08:03:57","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34897\/"},"modified":"2024-11-26T16:03:57","modified_gmt":"2024-11-26T08:03:57","slug":"java%e6%80%8e%e4%b9%88%e6%8c%89%e5%88%97%e9%81%8d%e5%8e%86%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34897\/","title":{"rendered":"java\u600e\u4e48\u6309\u5217\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u6309\u5217\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e24\u79cd java \u65b9\u6cd5\uff1a\u5d4c\u5957 for \u5faa\u73afstream api\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/03\/2024110305280192970.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u6309\u5217\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u6309\u5217\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 Java \u6309\u5217\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6309\u5217\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4\u7684\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li><strong>\u4f7f\u7528\u5d4c\u5957 for \u5faa\u73af<\/strong><\/li>\n<\/ol>\n<pre>int[][] array = {\n    {1, 2, 3},\n    {4, 5, 6},\n    {7, 8, 9}\n};\n\nfor (int j = 0; j &lt; array[0].length; j++) { \/\/ \u904d\u5386\u5217\n    for (int i = 0; i &lt; array.length; i++) { \/\/ \u904d\u5386\u884c\n        System.out.print(array[i][j] + \" \");\n    }\n    System.out.println(); \/\/ \u6362\u884c\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u8f93\u51fa\uff1a<\/strong><\/p>\n<pre>1 4 7\n2 5 8\n3 6 9<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ol>\n<li><strong>\u4f7f\u7528 Stream API<\/strong><\/li>\n<\/ol>\n<p>Java 8 \u5f15\u5165\u4e86 Stream API\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u6d01\u7684\u65b9\u5f0f\u6309\u5217\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[][] array = {\n    {1, 2, 3},\n    {4, 5, 6},\n    {7, 8, 9}\n};\n\nIntStream.range(0, array[0].length).forEach(j -&gt; { \/\/ \u904d\u5386\u5217\n    System.out.println(\"\u7b2c \" + (j + 1) + \" \u5217\uff1a\");\n    Arrays.stream(array).map(row -&gt; row[j]).forEach(System.out::println);\n});<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u8f93\u51fa\uff1a<\/strong><\/p>\n<pre>\u7b2c 1 \u5217\uff1a\n1\n4\n7\n\n\u7b2c 2 \u5217\uff1a\n2\n5\n8\n\n\u7b2c 3 \u5217\uff1a\n3\n6\n9<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u6309\u5217\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4\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>\u6309\u5217\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e24\u79cd java \u65b9\u6cd5\uff1a\u5d4c\u5957 for \u5faa\u73afstream api \u5982\u4f55\u4f7f\u7528 Java \u6309\u5217\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u6309\u5217\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4\u7684\u65b9\u6cd5\u5982\u4e0b\uff1a \u4f7f\u7528\u5d4c\u5957 for \u5faa\u73af int[][] array = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} }; for (int j = 0; j &lt; array[0].length; j++) { \/\/ \u904d\u5386\u5217 for (int i = 0; i &lt; array.length; i++) { \/\/ \u904d\u5386\u884c System.out.print(array[i][j] + [&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-34897","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34897","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=34897"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34897\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}