对给定的文本文件进行压缩和解压



程序功能： 　　

1．压缩(5个命令行参数)

Compress c 输入文件名 输出文件名 start step

将输入文件压缩为输出文件。Start，step意义见下面。



　　2．解压(3个命令行参数)

上面生成的压缩的输入文件解解压缩到输出文件，如果不是上面压缩的格式（根据文件特征识别），报错。



一元编码可以对整数序列进行编码。

非负整数n的一元编码（unary code）定义为n-1个1后跟一个0（表1）。

还可以定义通用的一元编码，也叫做“开始-步长”（start-step）码。这种编码取决于一个整参数二元组（start-step），定义如下：对数据字符进行编码的第n个码字由n个1后跟一个0再加上所有的a位码组成，其中a = start+n*step。表2和表3分别给出了(3,2)的编码格式和(2,1)的编码格式。-Given text file compression and decompression procedures: 1. Compression (5 command line arguments) Compress c input file name of the output file names start step input file compression for the output file. Start, step significance see below. 2. Input file compression decompression (three command-line parameters) generated above solution extracted to the output file, if not above compressed format (identification), based on the file characteristics error. Coding the one yuan encoding sequence of integers. N-1 is defined as a 1 followed by a 0 in the non-negative integer n monohydric encoding (unary code) (Table 1). Can also define a common coding, also known as the " Start- step"　(start-step) code. This coding depends on the tuple of an integer parameter (start-STEP), defined as follows: encoding the data characters of the n-th code word is formed of n a 1 followed by a 0 plus all of the a-bit code, wherein a = start+n* step. Tables 2 and 3 were given (3,2), the encoding forma