c++实现霍夫曼编码，用户先输入一段文字，然后程序执行统计并进行编码，最好输出编码并统计编码平均长度。有类和无类两种形式源代码-c++ achieve the Huffman code, the user to enter a section of text, and then the implementation of statistical procedures and codes, the best output encoding and statistical encoding the average length. There are categories and types of two forms of source code