1.
信号量机制的缺陷问题:在上面的生产者消费者实例中,信号量的工作机制如下(我们以生产者的代码为例):1 down(&empty);2
down(&mutex);3 enter_item(item);4 up(&mutex);5
up(&full);如果交换1号和2号语句,变成:1 down(&m...
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其他好文 时间:
2014-06-06 22:36:54
阅读次数:
336
【题目】
Follow up for "Remove Duplicates":
What if duplicates are allowed at most twice?
For example,
Given sorted array A = [1,1,1,2,2,3],
Your function should return length = 5, and A is now [1,1,2,2,3].
【题意】
给定一个有序数组,给数组去重,和Remove Duplicates from...
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其他好文 时间:
2014-06-03 05:36:24
阅读次数:
219
【题目】
Follow up for "Search in Rotated Sorted Array":
What if duplicates are allowed?
Would this affect the run-time complexity? How and why?
Write a function to determine if a given target is in the array.
【题意】
在“Search in Rotated Sorted Array”的基...
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其他好文 时间:
2014-06-03 01:55:38
阅读次数:
173
ProblemYou want your UI components to have
gravity, so that if they are dragged up to the top of the screen, they will
descend on their own. Combining...
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其他好文 时间:
2014-06-02 20:01:49
阅读次数:
243
百度编辑器本身是没有为上传图片添加水印的功能,想要在上传的时候添加图片水印,也很简单。以 ueditor 1.2.6 为例,打开php目录下面的imageUp.php文件,查找“$info = $up->getFileInfo();”,在这句代码的下面加入以下代码:
/* 添加水印 start */
$water_img = "watermark.png";
//水印文件...
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其他好文 时间:
2014-06-02 12:20:28
阅读次数:
248
DescriptionThe police office in Tadu City
decides to say ends to the chaos, as launch actions to root up the TWO gangs in
the city, Gang Dragon and Ga...
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其他好文 时间:
2014-06-02 09:38:19
阅读次数:
219
Given a linked list, determine if it has a
cycle in it.Follow up:Can you solve it without using extra
space?求链表是否有环的问题,要考虑链表为空的情况,定义一个快指针和一个慢指针,如果快指针和...
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其他好文 时间:
2014-06-02 08:05:16
阅读次数:
255
Given a linked list, return the node where the
cycle begins. If there is no cycle, returnnull.Follow up:Can you solve it
without using extra space?借用博...
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其他好文 时间:
2014-06-02 07:32:33
阅读次数:
291
用root登陆,安装mysqlyum -y install mysql-server ←
安装MySQLSetting up Install Processyum -y install php-mysql ← 安装php-mysqlSetting
up Install Process然后,配置MyS...
分类:
数据库 时间:
2014-06-02 00:00:33
阅读次数:
418
UPC/EAN/JAN
Fontware条形码控件使你的Windows/Linux/UNIX/Mac应用程序创建UPC/EAN/JAN 条码变得极其简单,而且还提供了TrueType,
PostScript Type 1, PostScript Type 3 and OpenType 字体,支持UP...
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其他好文 时间:
2014-05-31 19:33:36
阅读次数:
268