说明：  LZW压缩算法和RLE压缩算法的实现源码及Demo。 本Demo未经过严格测试，请先保存待压缩文件再进行压缩测试。
(RLE compression algorithm LZW compression algorithm and the realization of the source and the Demo. This Demo has not been rigorously tested, please save files to be compressed further testing.)