Java program asking the user to enter a number and will be printed out 10 times and enter a LETTER "x" to exit.
上传时间： 2017-08-11
上传用户：www240697738
程序用JAVA语言编写, 综合利用图结构和堆栈结构进行数据组织和处理. 可以进行正则表达式到NFA的转化, 并能用图形直观的表示. 对正则表达式有一些约定, 就是可以用单个字符表示输入, 也可以用 ‘ ‘ 连接起来的一串字符进行输入. 有基本的表达式以及由基本表达式构成的并置, 选择和重复的操作. 例: A|b*c ‘LETTER’*’digit’ 等都是合法输入. 还带有括号功能, 优先级
上传时间： 2015-05-26
上传用户：金宜
The JICQ is the bureau area which JAVA writes according to "Customer s Machine/Server"(C/S) mode message solid hour correspond by LETTER tool system, the system adopted the SQL Server2000 of Microsoft company as a backstage database, the system passes a JDBC interview database. The system is divided into the server procedure and customer s procedure two parts, server and customer adoption "Transmission Control Protocol"(TCP), connect a word (Socket) conjunction through a set, the adoption "User Datagram Protocol "(UDP) of the customer s, pass a data report a set to connect a word (DatagramSocket) establishment a conjunction. The system has customer registration, customer to register, increase good friend, delete good friend and send out and receive news etc. function.
标签： according Customer Machine Server
上传时间： 2014-01-04
上传用户：jyycc
Problem Statement You are given a string input. You are to find the longest substring of input such that the reversal of the substring is also a substring of input. In case of a tie, return the string that occurs earliest in input. Definition Class: ReverseSubstring Method: findReversed Parameters: string Returns: string Method signature: string findReversed(string input) (be sure your method is public) Notes The substring and its reversal may overlap partially or completely. The entire original string is itself a valid substring (see example 4). Constraints input will contain between 1 and 50 characters, inclusive. Each character of input will be an uppercase LETTER ( A - Z ). Examples 0) "XBCDEFYWFEDCBZ" Returns: "BCDEF" We see that the reverse of BCDEF is FEDCB, which appears later in the string. 1)
上传时间： 2015-09-21
上传用户：sunjet
We address the problem of blind carrier frequency-offset (CFO) estimation in quadrature amplitude modulation, phase-shift keying, and pulse amplitude modulation communications systems.We study the performance of a standard CFO estimate, which consists of first raising the received signal to the Mth power, where M is an integer depending on the type and size of the symbol constellation, and then applying the nonlinear least squares (NLLS) estimation approach. At low signal-to noise ratio (SNR), the NLLS method fails to provide an accurate CFO estimate because of the presence of outliers. In this LETTER, we derive an approximate closed-form expression for the outlier probability. This enables us to predict the mean-square error (MSE) on CFO estimation for all SNR values. For a given SNR, the new results also give insight into the minimum number of samples required in the CFO estimation procedure, in order to ensure that the MSE on estimation is not significantly affected by the outliers.
标签： frequency-offset estimation quadrature amplitude
上传时间： 2014-01-22
上传用户：牛布牛
程序接受用户键入的一行字符（字符数不超过80个，该字符串用回车符结束），并按字母、 数字以及其他字符分类统计，然后将结果存入以LETTER,digit和other为名的存储单元。
上传时间： 2014-01-21
上传用户：电子世界
Noncoherent receivers are attractive for pulsed UWB systems due to the implementation simplicity. To alleviate the noise effect in detecting UWB PPM signals, this LETTER proposes a simple yet flexible weighted noncoherent receiver structure, which adopts a square-law integrator multiplied with a window function.
标签： implementation Noncoherent attractive simplicity
上传时间： 2013-12-01
上传用户：wys0120
北京大学ACM比赛题目 Write a program to read four lines of upper case (i.e., all CAPITAL LETTERS) text input (no more than 72 characters per line) from the input file and print a vertical histogram that shows how many times each LETTER (but not blanks, digits, or punctuation) appears in the all-upper-case input. Format your output exactly as shown.
标签： CAPITAL LETTERS program Write
上传时间： 2014-01-17
上传用户：410805624
、该个词法分析器要求至少能够识别以下几类单词： a． 关键字：else if int return void while共6个，所有的关键字都是保留字，并且必须是小写； b． 标识符：识别与C语言词法规定相一致的标识符，通过下列正则表达式定义：ID = LETTER (LETTER | digit)*； c． 常数：NUM=(+ | - |ε)digit digit*(.digit digit* |ε)(e(+ | - |ε) digit digit* |ε)，LETTER = a|..|z|A|..|Z|，digit = 0|..|9，包括整数，如123, -123, +123等；小数，如123.45, +123.45, -123.45；科学计数法表示的常数，如+1.23e3，-2.3e-9； d． 专用符号：+ - * / < <= > >= == != = , ( ) [ ] { } /* */；
上传时间： 2013-12-08
上传用户：gtf1207
Over the past years, we have witnessed destructions of various kinds caused by human actions. As a university student, write a LETTER to our society to
标签： destructions witnessed actions various
上传时间： 2014-11-23
上传用户：一诺88
