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http://developer.51cto.com/art/201307/404612.htm150M active users300K Qps (read, only 6000 write/s)22MB/s triffic800 redis server. (use redis list)内部组...
分类:Web程序   时间:2014-05-14 03:50:34    阅读次数:365
When to use Class.isInstance() & when to use instanceof operator?
I think the official documentation gives you the answer to this one (albeit in a fairly nonspecific way):This method is the dynamic equivalent of the ...
分类:其他好文   时间:2014-05-14 03:31:06    阅读次数:223
mybatis(单表增删改查)
(mybatis注意各个文件的映射问题)用到的t_user数据库脚本:-- 导出 mybatis 的数据库结构CREATE DATABASE IF NOT EXISTS `mybatis` /*!40100 DEFAULT CHARACTER SET utf8 */;USE `mybatis`;--...
分类:其他好文   时间:2014-05-14 03:19:55    阅读次数:396
【LeetCode】Rotate Image
You are given annxn2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Follow up:Could you do this in-place?思路:先将矩阵转置,然后将第一列与最后...
分类:其他好文   时间:2014-05-14 03:09:35    阅读次数:225
mybatis(入门)
首先创建表:建表Sql文件CREATE DATABASE IF NOT EXISTS `mybatis` /*!40100 DEFAULT CHARACTER SET utf8 */;USE `mybatis`;-- 导出 表 mybatis.t_user 结构CREATE TABLE IF NO....
分类:其他好文   时间:2014-05-11 23:56:06    阅读次数:564
SPOJ 4487. Can you answer these queries VI splay
题目链接:点击打开链接 题意比较明显,不赘述。 删除时可以把i-1转到根,把i+1转到根下 则i点就在 根右子树 的左子树,且只有i这一个 点 #include #include #include #include using namespace std; #define N 300500 #define inf 10000000 #define L(x) tree[x].ch[0] #d...
分类:其他好文   时间:2014-05-11 21:05:52    阅读次数:365
HDU 4027 Can you answer these queries? 线段树裸题
题意: 给定2个操作 0、把区间的每个数sqrt 2、求和 因为每个数的sqrt次数很少,所以直接更新到底,用个标记表示是否更新完全(即区间内的数字只有0,1就不用再更新了) #include #include #include #include #include #include #include #include using namespace std; #define N 1000...
分类:其他好文   时间:2014-05-11 21:02:45    阅读次数:325
C语言实现C++的继承和多态
C++语言的对象化模型.封装,隐藏内部实现.继承,复用现有代码.多态,改写对象行为本文描述了一个C++实现的继承和多态的场景,然后用C语言编写了一种对等的实现。// A typical example of inheritance and virtual function use.// We wou...
分类:编程语言   时间:2014-05-11 18:03:47    阅读次数:412
【LeetCode】Insert Interval
Given a set ofnon-overlappingintervals, insert a new interval into the intervals (merge if necessary).You may assume that the intervals were initially...
分类:其他好文   时间:2014-05-11 16:35:35    阅读次数:224
leetcode | Text Justification
Given an array of words and a length L, format the text such that each line has exactly L characters and is fully (left and right) justified.You shoul...
分类:其他好文   时间:2014-05-11 15:15:29    阅读次数:287
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