一般来说用int型变量超过2^31的数就会溢出。此程序是利用数组对长度很长的整形字符串进行加减操作，并且进行自动测试的例子
上传时间： 2013-11-26
上传用户：zl5712176
本串行通信程序利用汇编语言通过BIOS中断调用和DOS功能调用实现PC机双机串行通信。其中，上位机和下位机串行口均为辅串口COM2（口地址为2FXH），对外用9针连接器与令一台PC机连接；BIOS通过“INT 14H”4个中断服务子程序，分别完成串口初始化编程、发送一帧数据、接受一帧数据以及测试通信线状态。本程序分为PC机串口自动测试程序（目的是测试串口好坏）和PC机全双工双机通信程序两个部分。
上传时间： 2015-05-01
上传用户：nairui21
数字运算，判断一个数是否接近素数 A Niven number is a number such that the sum of its digits divides itself. For example, 111 is a Niven number because the sum of its digits is 3, which divides 111. We can also specify a number in another base b, and a number in base b is a Niven number if the sum of its digits divides its value. Given b (2 <= b <= 10) and a number in base b, determine whether it is a Niven number or not. Input Each line of input contains the base b, followed by a string of digits representing a positive integer in that base. There are no leading zeroes. The input is terminated by a line consisting of 0 alone. Output For each case, print "yes" on a line if the given number is a Niven number, and "no" otherwise. Sample Input 10 111 2 110 10 123 6 1000 8 2314 0 Sample Output yes yes no yes no
上传时间： 2015-05-21
上传用户：daguda
源代码\用动态规划算法计算序列关系个数 用关系"<"和"="将3个数a，b，c依次序排列时，有13种不同的序列关系： a=b=c,a=b<c,a<b=v,a<b<c,a<c<b a=c<b,b<a=c,b<a<c,b<c<a,b=c<a c<a=b,c<a<b,c<b<a 若要将n个数依序列，设计一个动态规划算法，计算出有多少种不同的序列关系， 要求算法只占用O(n),只耗时O(n*n).
上传时间： 2013-12-26
上传用户：siguazgb
The government of a small but important country has decided that the alphabet needs to be streamlined and reordered. Uppercase letters will be eliminated. They will issue a royal decree in the form of a String of B and A characters. The first character in the decree specifies whether a must come ( B )Before b in the new alphabet or ( A )After b . The second character determines the relative placement of b and c , etc. So, for example, "BAA" means that a must come Before b , b must come After c , and c must come After d . Any letters beyond these requirements are to be excluded, so if the decree specifies k comparisons then the new alphabet will contain the first k+1 lowercase letters of the current alphabet. Create a class Alphabet that contains the method choices that takes the decree as input and returns the number of possible new alphabets that conform to the decree. If more than 1,000,000,000 are possible, return -1. Definition
标签： government streamline important alphabet
上传时间： 2015-06-09
上传用户：weixiao99
上下文无关文法（Context-Free Grammar, CFG）是一个4元组G=(V, T, S, P)，其中，V和T是不相交的有限集，S∈V，P是一组有限的产生式规则集，形如A→α，其中A∈V，且α∈(V∪T)*。V的元素称为非终结符，T的元素称为终结符，S是一个特殊的非终结符，称为文法开始符。 设G=(V, T, S, P)是一个CFG，则G产生的语言是所有可由G产生的字符串组成的集合，即L(G)={x∈T* | Sx}。一个语言L是上下文无关语言（Context-Free Language, CFL），当且仅当存在一个CFG G，使得L=L(G)。 *⇒ 例如，设文法G：S→AB A→aA|a B→bB|b 则L(G)={a^nb^m | n,m>=1} 其中非终结符都是大写字母，开始符都是S，终结符都是小写字母。
标签： Context-Free Grammar CFG
上传时间： 2013-12-10
上传用户：gaojiao1999
本文介绍了基于DS18B20单线数字温度传感器的电子孵化器的设计实现。设计中基本涵盖了对单线数字温度传感器DS18B20的原理的运用。在电子孵化器的制作过程中，硬件电路由单线数字温度传感器DS18B20和继电器的连接，电路可以把温度转化成数字用LED数码显示器显示输出。本设计采用外部供电方式（即用吹风机加热）。单线数字温度传感器DS18B20的温度测量范围从—55℃到+125℃，我们在设计中要求温度的范围是30℃到35℃（即温度下限为30℃，上限为35℃），温度低于30℃或者温度高于35℃，继电器自动断电，系统就会自动进行加热，以使温度控制在30℃到35℃之间。利用这个原理来实现电子孵化器。
上传时间： 2013-12-01
上传用户：一诺88
本文从高效管理信息出发，结合我系资料室的具体情况，探索了高校资料管理的系列方法。这些方法主要是针对如何让资料室工作人员摆脱繁琐重复的工作，实现对资料轻松，便捷，高速的管理，拓宽读者与工作人员沟通的渠道。在此基础上，还设计和开发了一套资料室管理系统，该系统基于SQL Server 2000数据库，采用Java语言作为开发工具，用Struts框架架构经过初步测试，系统运行稳定，操作简便，界面友好，适宜进一步推广。 该系统主要分为三个模块，即资料管理模块，读者管理模块，消息管理模块。资料管理模块主要的功能是对资料的添加，删除，修改与检索。读者管理模块的主要功能是对读者的添加删除，修改，检索以及借阅与归还的管理。消息发布模块的主要功能是管理员发布一些生要消息以达到通知的效果。
标签： 管理信息
上传时间： 2013-11-26
上传用户：yulg
We have a group of N items (represented by integers from 1 to N), and we know that there is some total order defined for these items. You may assume that no two elements will be equal (for all a, b: a<b or b<a). However, it is expensive to compare two items. Your task is to make a number of comparisons, and then output the sorted order. The cost of determining if a < b is given by the bth integer of element a of costs (space delimited), which is the same as the ath integer of element b. Naturally, you will be judged on the total cost of the comparisons you make before outputting the sorted order. If your order is incorrect, you will receive a 0. Otherwise, your score will be opt/cost, where opt is the best cost anyone has achieved and cost is the total cost of the comparisons you make (so your score for a test case will be between 0 and 1). Your score for the problem will simply be the sum of your scores for the individual test cases.
标签： represented integers group items
上传时间： 2016-01-17
上传用户：jeffery
The XML Toolbox converts MATLAB data types (such as double, char, struct, complex, sparse, logical) of any level of nesting to XML format and vice versa. For example, >> project.name = MyProject >> project.id = 1234 >> project.param.a = 3.1415 >> project.param.b = 42 becomes with str=xml_format(project, off ) "<project> <name>MyProject</name> <id>1234</id> <param> <a>3.1415</a> <b>42</b> </param> </project>" On the other hand, if an XML string XStr is given, this can be converted easily to a MATLAB data type or structure V with the command V=xml_parse(XStr).
标签： converts Toolbox complex logical
上传时间： 2016-02-12
上传用户：a673761058
