哈夫曼树，将建立好的哈夫曼树读入，再读入已经压缩好的01编码，将其解压缩为字符原文，目前不能处理汉字。-Huffman tree Huffman tree will establish good read, and read into the compression has been a good 01 coding to decompress for the characters in the original, can not handle Chinese characters.