rmi连接：
1)首先在被监控的JVM的启动参数中加入如下的启动参数以启JVM代理
-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=8000 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false
JMXServiceURL url = new JMXServiceURL(
"service:jmx:rmi:///jndi/rmi://127.0.0.1:8000/jmxrmi");
JMXConnector connector = JMXConnectorFactory.connect(url);
RuntimeMXBean rmxb = <span style="BACKGROUND-COLOR: #00ff40; COLOR: black; " id="casearchre......
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二分图匹配总结
二分图匹配
1、二分图最大匹配，求两个集合内，每个元素只能用一次，两集合间存在一些匹配关系，求最大匹配多少对，利用匈牙利算法，对于每个结点不断去找增广路去匹配
有几个重要性质:
1、最小点覆盖 = 最大匹配
2、最大独立集 = 总结点 - 最大匹配
模板：
bool dfs(int u) {
for (int i = 0; i < g[u].size(); i++) {
int v = g[u][i];
if (vis[v]) continue;
vis[v] = 1;
if (!left[v] || dfs(left[v])) {
left[v] = u;
return true;
}
}
return false;
}
int hungary() {
int ......
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C#中的XML注释 如何使用Sandcastle创建C#的帮助文档? 这需要在源文件中插入XML注释，以“///”的形式出现。C#的“///<></>”注释在编译生成xml时候被抽取出来，是用Sandcastle自动生成CHM帮助文档必不可少的来源。
===========================================================目录一、常见标记 <summary> <remarks> <para> <param> <paramref> <returns> <see> <seealso> <example> <c> <code> ......
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转载自：http://blog.csdn.net/pongba/archive/2007/03/09/1525446.aspx
C++
的罗浮宫
(http://blog.csdn.net/pongba
)
（另参考：A Memory Model for C++: Sequential Consistency for Race-Free Programs
Sequential Consistency for Atomics
）
Disclaimer
: You should first
(but not the least) understand the fundamentals of multithreading
memory models
to be able to read the following text. I personally
recommend you start with the related
C++0x
memory model proposals
i......
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一、浅析
HTTP协议（http://www.w3.org/Protocols/）是“一次性单向”协议。
服务端不能主动连接客户端，只能被动等待并答复客户端请求。客户端连接服务端，发出一个HTTP Request，服务端处理请求，并且返回一个HTTP Response给客户端，本次HTTP Request-Response Cycle结束。
我们看到，HTTP协议本身并不能支持服务端保存客户端的状态信息。于是，Web Server中引入了session的概念，用来保存客户端的状态信息。
这里用一个形象的比喻来解释session的工作方式。假设Web Server是一个商场的存包处，HTTP Request是一个顾客，第一次......
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Description
Consider a tree T with N (1 <= N <= 20,000) nodes numbered 1...N. Deleting any node from the tree yields a forest: a collection of one or more trees. Define the balance of a node to be the size of the largest tree in the forest T created by deleting that node
from T.
For example, consider the tree:
Deleting node 4 yields two trees whose member nodes are {5} and {1,2,3,6,7}. The larger of these two trees has five nodes, thus the balance of node 4 is five. Deleting no......
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//反射字段：public String name = "zhangsan";
public void test1() throws Exception{
Person p = new Person();
Class clazz = Class.forName("reflect.Person");
Field f = clazz.getField("name");
//获取字段值
Object value = f.get(p);
//获取字段类型
Class type = f.getType();
if(type.equals(String.class)){
String s = (String)value;
System.out.println(s);
}
//通过反射赋值
f.set(p, "ok");
System.out.println(p.name);
}
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在each代码块内不能使用break和continue,要实现break和continue的功能的话，要使用其它的方式 break----用return false; continue --用return ture;
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Aim: Find oˆ such that
Problem: Analytic solution of likelihood equations not always available.
Example: Censored exponentially distributed observations
Suppose that and that the
censored times
are observed. Let m be the number of uncensored observations. Then
with first and second derivative
Thus we obtain for the observed and expected information
Thus the MLE can be obtained be the Newton-Raphson iteration
Numerical example: Choose starting value in (0, 1)
Implementation i......
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1、Android dvm的进程和Linux的进程, 应用程序的进程是否为同一个概念
DVM指dalivk的虚拟机。每一个Android应用程序都在它自己的进程中运行，都拥有一个独立的Dalvik虚拟机实例。而每一个DVM都是在Linux中的一个进程，所以说可以认为是同一个概念。
2、sim卡的EF文件有什么作用
sim卡的文件系统有自己规范，主要是为了和手机通讯，sim本身可以有自己的操作系统，EF就是作存储并和手机通讯用的。
3、嵌入式操作系统内存管理有哪几种，各有何特性 ?
页式，段式，段页，用到了MMU,虚拟空间等技术。
4、什么是嵌入式实时操作系统,......
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Pretty
Poem
Time Limit: 2 Seconds Memory Limit: 65536 KB
Poetry is a form of literature that uses aesthetic and rhythmic qualities of language. There are many famous poets in the contemporary era. It is said that a few ACM-ICPC contestants
can even write poetic code. Some poems has a strict rhyme scheme like "ABABA" or "ABABCAB". For example, "niconiconi" is composed of a rhyme scheme "ABABA" with A = "ni" and B = "co".
More technically, we call a poem pretty if it can be decompos......
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