问题描述： 设R={r1,r2,…,rn}是要进行排列的n个元素，其中r1,r2,…,rn可能相同。试设计一个算法，列出R的所有不同排列。 编程任务： 给定以及待排列的个元素。计算出这个元素的所有不同排列。
上传时间： 2015-09-17
上传用户：xuan‘nian
This program can R/W EXCEL file!
上传时间： 2015-09-18
上传用户：dianxin61
回溯（b a c k t r a c k i n g）是一种系统地搜索问题解答的方法。为了实现回溯，首先需要为问题定义一个解空间（ solution space），这个空间必须至少包含问题的一个解（可能是最优的）。在迷宫老鼠问题中，我们可以定义一个包含从入口到出口的所有路径的解空间；在具有n 个对象的0 / 1背包问题中（见1 . 4节和2 . 2节），解空间的一个合理选择是2n 个长度为n 的0 / 1向量的集合，这个集合表示了将0或1分配给x的所有可能方法。当n= 3时，解空间为{ ( 0 , 0 , 0 )，( 0 , 1 , 0 )，( 0 , 0 , 1 )，( 1 , 0 , 0 )，( 0 , 1 , 1 )，( 1 , 0 , 1 )，( 1 , 1 , 0 )，( 1 , 1 , 1 ) }。
标签： 搜索
上传时间： 2014-01-17
上传用户：jhksyghr
* "Copyright (c) 2006 Robert B. Reese ("AUTHOR")" * All rights reserved. * (R. Reese, reese@ece.msstate.edu, Mississippi State University) * IN NO EVENT SHALL THE "AUTHOR" BE LIABLE TO ANY PARTY FOR * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE "AUTHOR" * HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
上传时间： 2015-09-24
上传用户：mpquest
In this paper, we describe the development of a mobile butterfly-watching learning (BWL) system to realize outdoor independent learning for mobile learners. The mobile butterfly-watching learning system was designed in a wireless mobile ad-hoc learning environment. This is first result to provide a cognitive tool with supporting the independent learning by applying PDA with wireless communication technology to extend learning outside of the classroom. Independent learning consists of self-selection, self-determination, self-modification, and self-checking.
标签： butterfly-watching development describe learning
上传时间： 2014-11-26
上传用户：waizhang
Our approach to understanding mobile learning begins by describing a dialectical approach to the development and presentation of a task model using the sociocognitive engineering design method. This analysis synthesises relevant theoretical approaches. We then examine two field studies which feed into the development of the task model.
标签： approach understanding dialectical describing
上传时间： 2014-11-28
上传用户：comua
％The phase locked loop(PLL),adjusts the phase of a local oscillator ％w.r.t the incoming modulated signal.In this way,the phase of the ％incoming signal is locked and the signal is demodulated.This scheme ％is used in PM and FM as well. ％We will implement it by using a closed loop system.Control systems ％techniques are applied here.
标签： phase w.r.t oscillator modulated
上传时间： 2015-09-28
上传用户：zhangzhenyu
基本遗传学习分类系统 A Simple Classifier System based on Genetic Learning developed from the Pascal SCS code presented by David E.Goldberg
标签： Classifier developed Learning Genetic
上传时间： 2014-08-07
上传用户：txfyddz
日r
标签：
上传时间： 2015-10-02
上传用户：jjj0202
< Co-Verification of Hardware and Software for ARM SoC Design>> by Jason R. Andrews
标签： R. Co-Verification Hardware Software
上传时间： 2015-10-03
上传用户：zhaiyanzhong
