LZW是一个很著名的压缩解压缩设计方案，在很多数据结构书中都作为例子讲解，此程序完整的实现了基于LZW的压缩解压缩-LZW is a very famous decompress compressed design scheme, Many data structures in the book are as examples to explain that the integrity of the process based on the realization of the LZW compression decompress