说明：  给定电文进行哈夫曼编码，给定编码进行哈夫曼译码。要求电文存储在文件1中，编码后的结果存储在文件2中，给定编码存储在文件3中，译码后的结果存储在文件4中给定电文进行哈夫曼编码，给定编码进行哈夫曼译码。要求电文存储在文件1中，编码后的结果存储在文件2中，给定编码存储在文件3中，译码后的结果存储在文件4中
(Given the message Huffman, given Huffman code decoding. Request message is stored in the document 1, the result of coding is stored in the document 2, a given code is stored in the document 3, the result of decoding is stored in the document 4 to set the message Huffman, a given code Huffman decoding. Request message is stored in the document 1, the result of coding is stored in the document 2, a given code is stored in the document 3, the result of decoding is stored in the document 4)