LCS(最长公共子序列)问题可以简单地描述如下: 一个给定序列的子序列是在该序列中删去若干元素后得到的序列。给定两个序列X和Y,当另一序列Z既是X的子序列又是Y的子序列时,称Z是序列X和Y的公共子序列。例如,若X={A,B,C,B,D,B,A},Y={B,D,C,A,B,A},则序列{B,C,A}是X和Y的一个公共子序列,但它不是X和Y的一个最长公共子序列。序列{B,C,B,A}也是X和Y的一个公共子序列,它的长度为4,而且它是X和Y的一个最长公共子序列,因为X和Y没有长度大于4的公共子序列。 最长公共子序列问题就是给定两个序列X={x1,x2,...xm}和Y={y1,y2,...yn},找出X和Y的一个最长公共子序列。对于这个问题比较容易想到的算法是穷举,对X的所有子序列,检查它是否也是Y的子序列,从而确定它是否为X和Y的公共子序列,并且在检查过程中记录最长的公共子序列。X的所有子序列都检查过后即可求出X和Y的最长公共子序列。X的每个子序列相应于下标集{1,2,...,m}的一个子集。因此,共有2^m个不同子序列,从而穷举搜索法需要指数时间。
上传时间: 2015-06-09
上传用户:气温达上千万的
c语言版的多项式曲线拟合。 用最小二乘法进行曲线拟合. 用p-1 次多项式进行拟合,p<= 10 x,y 的第0个域x[0],y[0],没有用,有效数据从x[1],y[1] 开始 nNodeNum,有效数据节点的个数。 b,为输出的多项式系数,b[i] 为b[i-1]次项。b[0],没有用。 b,有10个元素ok。
上传时间: 2014-01-12
上传用户:变形金刚
高精度乘法基本思想和加法一样。其基本流程如下: ①读入被乘数s1,乘数s2 ②把s1、s2分成4位一段,转成数值存在数组a,b中;记下a,b的长度k1,k2; ③i赋为b中的最低位; ④从b中取出第i位与a相乘,累加到另一数组c中;(注意:累加时错开的位数应是多少位 ?) ⑤i:=i-1;检测i值:小于k2则转⑥,否则转④ ⑥打印结果
上传时间: 2015-08-16
上传用户:源弋弋
This ActiveX control and Demo will allow you to dock your toolbars/forms to a mdiform much in the way in which Visual C++ allows you to. 象Vc++一样使用多文本窗体
标签: toolbars ActiveX control mdiform
上传时间: 2015-09-14
上传用户:asdfasdfd
ejb3.0 in action的全部配套源代码,相信读过spring in action,ajax in action的读者应该已经领阅到action从书的魅力,这本书是最新的action从书,对于正在学习ejb3.0的同志无疑是最好的帮助,源代码与书配套,相得益彰。
上传时间: 2015-10-03
上传用户:woshiayin
In this first-ever paperback edition of his long-time best-seller, motivational speaker Steve Chandler helps you create an action plan for living your vision in business and in life. It features 100 proven methods to positively change the way you think and act-methods based on feedback from the hundreds of thousands of corporate and public seminar attendees Chandler speaks to each year. 100 Ways to Motivate Yourself will help you break through the negative barriers and banish the pessimistic thoughts that are preventing you from fulfilling your lifelong goals and dreams. Whether you re self-employed, a manager, or a high-level executive, it s still easy to get stuck in the daily routines of life, fantasizing about what could have been. Steve Chandler helps you turn that way of thinking around and make what could have been into what can and will be.
标签: motivational best-seller first-ever paperback
上传时间: 2015-10-26
上传用户:牛津鞋
[输入] 图的顶点个数N,图中顶点之间的关系及起点A和终点B [输出] 若A到B无路径,则输出“There is no path” 否则输出A到B路径上个顶点 [存储结构] 图采用邻接矩阵的方式存储。 [算法的基本思想] 采用广度优先搜索的方法,从顶点A开始,依次访问与A邻接的顶点VA1,VA2,...,VAK, 访问遍之后,若没有访问B,则继续访问与VA1邻接的顶点VA11,VA12,...,VA1M,再访问与VA2邻接顶点...,如此下去,直至找到B,最先到达B点的路径,一定是边数最少的路径。实现时采用队列记录被访问过的顶点。每次访问与队头顶点相邻接的顶点,然后将队头顶点从队列中删去。若队空,则说明到不存在通路。在访问顶点过程中,每次把当前顶点的序号作为与其邻接的未访问的顶点的前驱顶点记录下来,以便输出时回溯。 #include<stdio.h> int number //队列类型 typedef struct{ int q[20]
标签: 输入
上传时间: 2015-11-16
上传用户:ma1301115706
The initial planning and thinking about this book began during a discussion of SQL Server futures in July 2001. The discussion was with Rob Howard during a trip to Microsoft to discuss the first book I was working on at that time. After that, I stayed involved in what was happening in ADO.NET by going to the SQL Server Yukon Technical Preview in Bellevue, Washington, in February 2002 and by working with the ASP.NET and SQL Server teams at Microsoft since July 2003.
标签: discussion planning thinking initial
上传时间: 2014-01-08
上传用户:cjf0304
the calculator s usage! after you have inputed 2 operators,choose + - * / function! But the only situation I did t deal with is that when you choos + fuction ,and the operaters signs is like this -A+B,just turn it to B-A!
标签: calculator the operators function
上传时间: 2016-02-12
上传用户:lili123
CRC16算法的Java实现,使用方法如下: CRC16 crc16 = new CRC16() byte[] b = new byte[] { // (byte) 0xF0,(byte)0xF0,(byte)0xF0,(byte)0x72 (byte) 0x2C, (byte) 0x00, (byte) 0xFF, (byte) 0xFE, (byte) 0xFE, (byte) 0x04, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00 } for (int k = 0 k < b.length k++) { crc16.update(b[k]) } System.out.println(Integer.toHexString(crc16.getValue())) System.out.println(Integer.toHexString(b.length))
上传时间: 2014-12-20
上传用户:ve3344