LW-LZ78

  　　　实现以下的无损数据压缩方法 　　　LZ78和LZW算法； 给定若干个输入的字符串流，应用所编写的算法实现压缩，计算压缩比，然后再将压缩的码流进行解码，同输入的字符串流进行比较，判断输入输出码流是否一致。(Achieve the following lossless LZ78 and LZW data compression algorithm certain algorithms to a given input string stream to achieve compression applications written to calculate the compression ratio, and then decoding the compressed code stream, with the stream input string , and determines the input and output streams are the same.)