实现了huffman编码和译码。同时完成了huffman编码在文档、图片中的解压缩实现。同时用GUI的方式完成整个实验的可视化。(These series m documents have accomplished the coding and decoding function of huffman code. And it made it implemented in the compressing text and images. Meantime, we use GUI to made the visualization of all these experiment.)