1.接受原始数据：从终端读入字符集大小n，n个字符和n个权值，建立哈夫曼树。2.编码：利用已建立好的哈夫曼树，对文件中的正文进行编码。3.译码：利用已建立好的哈夫曼树将代码进行译码。4.打印编码规则：即字符与编码的一一对应关系。-1. Accept the raw data: From the terminal reads the character set size n, n characters, and n-weights, the establishment of Huffman trees. 2. Coding: Using the already established a good Huffman tree, the body of the document to be encoded. 3. Decoding: Using the already well-established Huffman tree to decode the code. 4. Print encoding rules: namely, one to one correspondence between characters and encoding.