实现一个字符串类的若干函数的操作

本程序是基于灰色预测理论的灰色预测的算法实现-This procedure is based on the gray gray prediction theory prediction algorithm

猜数字游戏，程序提供自动生成及层次判断数字序列，锻炼人的记忆力及推倒能力-猜数字game, procedures to determine the level of automatically generated and the number of sequences, training people and tear down the memory capacity

操作系统用的进一步理解各种算法的性能，并且进一步理解各种页面替换算法的优缺点。 -operating system with the further understanding of algorithms, and to further understanding of pages replacement algorithm are discussed.

用批处理实现帐号登记本软件,能够登记并查询信息,并且将数据隐藏在回收站的目录下。-Account registration with a batch of the software implementation, and be able to query the registration information and data hidden in the recycle bin directory.

java 结构模式，适配器模式，实现变狗为猫的神话，包括例子。-java model, adapter mode and the change of cats, dogs myths, including examples.

正弦波数据产生程序,升级版本, 更方便,不必必源程序,直接输入所要产生的数据个数!-sine wave data generation procedures, upgrade versions, more convenient, and certainly not the source. directly import data to the number!

想要acn题库，某天在网上找了很久也没找到，这是我找到的ACM题集，pdf的-Want to acn item bank, one day on the Internet looking for a long time had not found This is what I found ACM question set, pdf" s

这是一个用labview开发的基于声卡的频谱分析软件-This is a development with LabVIEW-based sound card spectrum analysis software

俄罗斯方块游戏程序源码,单机版,可选择游戏难度级别-Tetris game program source, stand-alone version of the game can choose the difficulty level

四种UNIX消息队列操作函数-four UNIX operating function Message Queue