Set of documents describing various compression techniques 1) Arithmetic coding 2) Burrows Wheeler transform 3) DEFLATE, LZW, LZ77, LZ78 algorithms 4) Discrete wavelet transform 5) Run lenght encoding 6) ZIP and PNG file formats

用lz77算法进行压缩，对得到的结果再使用huffman编码的方法进行压缩。分别对lz77和huffman编码的原理进行说明。 -Lz77 algorithm to compress the results obtained using huffman encoding method to compress. Lz77 and huffman encoding principle is described.

本文共分三部分:第一部分简明介绍了课题研究的背景及意义 第二部分详细阐述了无损数据压缩的原理机制和关键技术，突出强调了影响LZ77压缩效果的三要素:滑动窗口、最大匹配长度和查找策略 第三部分重占讨论了系统的设计、实现和实验数据。-This article altogether is divided three parts:The first part concisely introduced the topic research background and the significance T

The compressed source code of the LZ77 algorithm-The compressed source code of the LZ77 algorithm