{"id":34727,"date":"2024-11-26T14:53:54","date_gmt":"2024-11-26T06:53:54","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34727\/"},"modified":"2024-11-26T14:53:54","modified_gmt":"2024-11-26T06:53:54","slug":"java%e6%80%8e%e4%b9%88%e8%be%93%e5%87%ba%e6%95%b0%e7%bb%84%e6%9c%80%e5%90%8e%e4%b8%80%e4%b8%aa","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34727\/","title":{"rendered":"java\u600e\u4e48\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff1a\u4f7f\u7528 arr.length \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\u3002\u7528\u957f\u5ea6\u51cf\u4e00\u5f97\u5230\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u3002\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u5e76\u8f93\u51fa\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/03\/2024110301544736843.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u63d2\u56fe\" alt=\"java\u600e\u4e48\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e2d\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u5143\u7d20<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7684 length \u5c5e\u6027\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u7136\u540e\u7528\u957f\u5ea6\u51cf\u4e00\u5f97\u5230\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff1a<\/p>\n<pre>\/\/ \u5047\u8bbe\u6570\u7ec4\u540d\u4e3a arr\nint lastIndex = arr.length - 1;\nSystem.out.println(arr[lastIndex]);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u4e0a\u8ff0\u4ee3\u7801\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\n\n\/\/ \u83b7\u53d6\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\nint lastIndex = arr.length - 1;\n\n\/\/ \u8f93\u51fa\u6700\u540e\u4e00\u4e2a\u5143\u7d20\nSystem.out.println(arr[lastIndex]); \/\/ \u8f93\u51fa\uff1a5<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\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>\u5728 java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff1a\u4f7f\u7528 arr.length \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\u3002\u7528\u957f\u5ea6\u51cf\u4e00\u5f97\u5230\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u3002\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u5e76\u8f93\u51fa\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u3002 Java \u4e2d\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u5143\u7d20 \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7684 length \u5c5e\u6027\u6765\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u7136\u540e\u7528\u957f\u5ea6\u51cf\u4e00\u5f97\u5230\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff1a \/\/ \u5047\u8bbe\u6570\u7ec4\u540d\u4e3a arr int lastIndex = arr.length &#8211; 1; System.out.println(arr[lastIndex]); \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b\uff1a \u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u4e0a\u8ff0\u4ee3\u7801\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = {1, 2, 3, 4, 5}; \/\/ \u83b7\u53d6\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15 int lastIndex = arr.length &#8211; 1; \/\/ \u8f93\u51fa\u6700\u540e\u4e00\u4e2a\u5143\u7d20 System.out.println(arr[lastIndex]); \/\/ \u8f93\u51fa\uff1a5 \u767b\u5f55\u540e\u590d\u5236 \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u8f93\u51fa\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\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-34727","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34727","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=34727"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34727\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34727"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34727"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34727"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}