实现最优二叉树的构造；在此基础上完成哈夫曼编码器与译码器。 假设报文中只会出现如下表所示的字符： 字符 A B C D E F G H I J K L M N 频度 186 64 13 22 32 103 21 15 47 57 1 5 32 20 57 字符 O P Q R S T U V W X Y Z ， ． 频度 63 15 1 48 51 80 23 8 18 1 16 1 6 2 要求完成的系统应具备如下的功能： 1．初始化。从终端（文件）读入字符集的数据信息，。建立哈夫曼树。 2．编码：利用已建好的哈夫曼树对明文文件进行编码，并存入目标文件（哈夫曼码文件）。 3．译码：利用已建好的哈夫曼树对目标文件（哈夫曼码文件）进行编码，并存入指定的明文文件。 4．输出哈夫曼编码文件：输出每一个字符的哈夫曼编码。
上传时间： 2014-11-23
上传用户：shanml
This sample is a working example of Exabyte2 Tape Minidriver. This module contains device-specific routines for the Exabyte EXB-8500 tape drive.
标签： This device-specific Minidriver Exabyte2
上传时间： 2013-12-23
上传用户：wfeel
pashload是应用在linux下的网络带宽测试源程序精确度比较高 ///////////////////////////////////// Pathload is a tool for estimating the available bandwidth of an end-to-end path from a host S (sender) to a host R (receiver). The available bandwidth is the maximum IP-layer throughput that a flow can get in the path from S to R, without reducing the rate of the rest of the traffic in the path.
标签： pashload Pathload linux tool
上传时间： 2016-06-29
上传用户：xzt
复数运算#include<iostream.h> class Complex { public: Complex( double r =0, double i =0 ) Complex(int a) { Real = a Image = 0 } void print() const friend Complex operator+ ( const Complex & c1, const Complex & c2 ) friend Complex operator- ( const Complex & c1, const Complex & c2 ) friend Complex operator- ( const Complex & c ) private: double Real, Image }
标签： Complex double iostream include
上传时间： 2016-06-30
上传用户：wang5829
This handbook is a concise guide to architecting, designing, and building J2EE applications. It guides technical architects through the entire J2EE project, including identifying business requirements, performing use-case analysis, doing object and data modeling, and leading a development team through construction. Whether you are about to architect your first J2EE application or are looking for ways to keep your projects on-time and on-budget, you will refer to this handbook again and again.
标签： architecting applications designing handbook
上传时间： 2014-08-06
上传用户：xuan‘nian
The Rails Cookbook is is packed with the solutions you need to be a proficient developer with Rails, the leading framework for building the new generation of Web 2.0 applications. Recipes range from the basics, like installing Rails and setting up your development environment, to the latest techniques, such as developing RESTful web services. Topics include: . Modeling data with the ActiveRecord library . Setting up views with ActionView and RHTML templates . Building your application s logic into ActionController . Testing and debugging your Rails application . Building responsive web applications using JavaScript and Ajax . Ensuring that your application is security and performs well . Deploying your application with Mongrel and Apache . Using Capistrano to automate deployment . Using the many Rails plugins Working with graphics
标签： Rails with proficient developer
上传时间： 2013-12-23
上传用户：pkkkkp
ofdm信道特性 Channel transmission simulator Channel transmission simulator ％ ％ inputs: ％ sig2 - noise variance ％ Mt - number of Tx antennas ％ Mr - number of Rx antennas ％ x - vector of complex input symbols (for MIMO, this is a matrix, where each column ％ is the value of the antenna outputs at a single time instance) ％ H - frequency selective channel - represented in block-Toeplitz form for MIMO transmission ％ N - number of symbols transmitted in OFDM frame ％ ％ outputs: ％ y - vector of channel outputs (matrix for MIMO again, just like x matrix) ％ create noise vector sequence (each row is a different antenna, each column is a ％ different time index) note: noise is spatially and temporally white
标签： transmission simulator Channel inputs
上传时间： 2016-07-22
上传用户：kelimu
MT: windows NT/2000/XP command line tape manipulation written to format a tape windows-XP backup refused to write or format... and satisfy my curiosity Can be used for crude data recovery (combine seek and read)
标签： tape manipulation windows-XP windows
上传时间： 2013-12-23
上传用户：tb_6877751
一个理想的系统应是R,S尽量小，而P,A尽可能大。而在一个实际系统中，S,R是相互制约的，拒识率R的提高总伴随着误识率S的下降，与此同时识别率A和识别精度P的提高。因此，在评价手写数字识别系统系统时，我们必须综合考虑这几个指标。另外，由于手写数字的书写风格、工整程度可以有相当大的差别，因此必须弄清一个指标在怎样的样本集合下获得的。
标签：
上传时间： 2014-01-11
上传用户：hzy5825468
UML指南An important part of the Unified Modeling Language (UML) is the facilities for drawing use case diagrams. Use cases are used during the analysis phase of a project to identify and partition system functionality. They separate the system into actors and use cases.
标签： facilities UML important the
上传时间： 2013-12-23
上传用户：417313137
