准备一个文件，统计该文件中各种字符的频率，对各字符进行Huffman编码，将该文件翻译成Huffman编码文件，再将Huffman编码文件翻译成源文件。-prepared a document, statistics that document the frequency of various characters, on the characters Huffman coding, the document translated into Huffman coding documents, Huffman coding then the translation of documents into the source file.