题目描述:
Given a range [m, n] where 0 <= m <= n <= 2147483647, return the bitwise AND of all numbers in this range, inclusive.
For example, given the range [5, 7], you should return 4.
题目大意:
给定范围[m, n ...
Given a range [m, n] where 0 <= m <= n <= 2147483647, return the bitwise AND of all numbers in this range, inclusive.
For example, given the range [5, 7], you should return 4.
给定范围[m, n ...
Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An island is surrounded by water and is formed by connecting adjacent lands horizontally or vertically. You may assume all four edges of ...
Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters for "abcabcbb" is "abc", which the length is 3. For "bbbbb" the longest substring is "b", with the ...
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list.
Input: (2 ...
今天在查看站长统计数据时,惊讶地发现网站的流量较前日锐减。
仔细观察网站的来路域名数据之后,才发现网站来源于百度搜索的流量几乎为0。
在百度搜索中查询关键词site:bookshadow.com,发现网站的连通率为0%,此外网站首页在搜索结果中“消失”了,只剩下了内页链接。
这就是SEO领域人们常常提到的“K站”,书影博客被百度K站了!
博客从搭建之初到现在这一年多的时间里,笔者第一次亲身经历博客被搜索引擎K站。
不出所料,在百度搜索框中查询书影博客的几个热门关键词,结果列表中已经无法找到相关的搜索结果。
打开百度站长工具后,笔者发现了问题症结所在。
消息提醒中赫然列出了两条关于Baiduspider抓取异常的提示,内容如下:
错误提示1:
http://www.bookshadow.com/: Baiduspider无法通过联通访问您的网站 2014年03月30日 亲爱的网站管理员: Baiduspider通过联通网络无法访问网站http://www.bookshadow.com/ ,请您在抓取异常工具中查看详情。 检测时间:2014-03-30 06:00:00
错误提示2 ...