题目
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.
For example,
"A man, a plan, a canal: Panama" is a palindrome.
"race a car" i...
分类:
其他好文 时间:
2014-07-02 09:49:04
阅读次数:
271
#include #include #include #include class semaphore{unsigned int count_;boost::mutex mutex_;boost::condition_variable condition_;public:explicit sema....
分类:
其他好文 时间:
2014-07-01 22:03:34
阅读次数:
474
17:46:15 HR@ datacenter>set autotrace onlyUsage: SET AUTOT[RACE] {OFF | ON | TRACE[ONLY]} [EXP[LAIN]] [STAT[ISTICS]]17:47:36 HR@ datacenter>set autot ...
分类:
其他好文 时间:
2014-07-01 20:16:34
阅读次数:
253
1、错误描述
ORA-12801: 并行查询服务器P007中发出错误信号
ORA-01722:无效数字
12801.00000 -"error signaled in parallel query server %s"
*Cause: A parallel query server reached an exception condition.
*Action: Check the follow...
分类:
数据库 时间:
2014-07-01 06:22:10
阅读次数:
391
Bob’s Race
Time Limit: 5000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 2115 Accepted Submission(s): 658
Problem Description
Bob wants to hol...
分类:
其他好文 时间:
2014-06-30 07:37:16
阅读次数:
284
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.
For example,
"A
man, a plan, a canal: Panama" is a palindrome.
"race
a car" is no...
分类:
其他好文 时间:
2014-06-27 10:36:41
阅读次数:
183
Re'entrantLock lock = new ReentrantLock(fair);
Condition
notEmpty = lock.newCondition(); //返回内部类 AbstractQueuedSyncronizer.ConditionObject
各自维护了两个队列.一个是阻塞同步队列 syncQueue 双向队列,一个是条件等待队列....
分类:
数据库 时间:
2014-06-27 09:10:37
阅读次数:
505
本文分析的是llvm libc++的实现:http://libcxx.llvm.org/
C++11中的各种mutex, lock对象,实际上都是对posix的mutex,condition的封装。不过里面也有很多细节值得学习。
std::mutex
先来看下std::mutex:
包增了一个pthread_mutex_t __m_,很简单,每个函数该干嘛就干嘛。
class mutex...
分类:
编程语言 时间:
2014-06-25 19:22:54
阅读次数:
338
Given a string, determine if it is a palindrome, considering only alphanumeric
characters and ignoring cases.
For example,
"A man, a plan, a canal: Panama" is a palindrome.
"race a car" i...
分类:
其他好文 时间:
2014-06-24 18:16:02
阅读次数:
147
【题目】
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.
For example,
"A man, a plan, a canal: Panama" is a palindrome.
"race a car" is not a palindrome.
Note:
Have you consider that the string m...
分类:
其他好文 时间:
2014-06-24 15:35:07
阅读次数:
150