大约有 18,000 项符合查询结果（耗时：0.0222秒） [XML]
How to find the kth largest element in an unsorted array of length n in O(n)?
...A2.
Let's guess that T(n) <= an for some a. Then we get
T(n)
<= cn + (1/n) ∑i=1 to nT(max(i-1, n-i))
= cn + (1/n) ∑i=1 to floor(n/2) T(n-i) + (1/n) ∑i=floor(n/2)+1 to n T(i)
<= cn + 2 (1/n) ∑i=floor(n/2) to n T(i)
<= cn + 2 (1/n) ∑i=floor(n/2) to n ai
and now somehow w...
【phpcms v9】PC站和手机站 全静态手机移动站方法 - 更多技术 - 清泛网 - ...
...机移动站方法1、PC静态，手机动态或伪静态参考：http: www admin365 cn thread-40728-1-1 html2、------- 双模板 一个后台全静态的方式，目前网上没有，需要自己实现，不过思路不外乎 defa 1、PC静态，手机动态或伪静态参考：http://www.admin...
由12306.cn谈谈网站性能技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
由12306.cn谈谈网站性能技术12306.cn网站挂了，被全国人民骂了。我这两天也在思考这个事，我想以这个事来粗略地和大家讨论一下网站性能的问题。因为仓促，而且完全基于...12306.cn网站挂了，被全国人民骂了。我这两天也在思考...
What are C++ functors and their uses?
... When this answer was written, did bool not exist?
– Fund Monica's Lawsuit
May 8 '16 at 17:40
...
Calculating moving average
...comment from @Ricardo Cruz:
cx <- c(0, cumsum(ifelse(is.na(x), 0, x)))
cn <- c(0, cumsum(ifelse(is.na(x), 0, 1)))
rx <- cx[(n+1):length(cx)] - cx[1:(length(cx) - n)]
rn <- cn[(n+1):length(cx)] - cn[1:(length(cx) - n)]
rsum <- rx / rn
This still has the issue that if all the values ...
Differences between Octave and MATLAB? [closed]
...nd maintained by a group of volunteers, where the development of MATLAB is funded by millions of dollars by industry. I'm still a student and am using a student version of MATLAB, but I am thinking of going over to Octave once the stable version with the GUI is released.
MATLAB is probably a lot mo...
Break a previous commit into multiple commits
...was farther back in the tree than you want to count, then
$ git rebase -i 123abcd~
where 123abcd is the SHA1 of the commit you want to split up.
If you are on a different branch (e.g., a feature branch) that you plan to merge into master:
$ git rebase -i master
When you get the rebase edit sc...
keytool error :java.io.IoException:Incorrect AVA format
...PatrickTaylor -validity 10000
-keystore C:\drops\patrickkeystore
-dname "cn=Patrick Taylor, ou=engineering, o=company, c=US"
share
|
improve this answer
|
follow
...
CSS to stop text wrapping under image
... to use a <p> element as a parent for your <span>.
<li id="CN2787">
<img class="fav_star" src="images/fav.png">
<p>
<span>Text, text and more text</span>
</p>
</li>
Since <p> is a block element, you can set its width using CSS...