C++代码，目的是生成哈夫曼树。哈夫曼树又称最优二叉树，是一类带权路径长度最短的树。其构造可利用哈夫曼最早给出的哈夫曼算法来构造-C++ code is to generate Huffman trees. Huffman tree is also called the optimal two tree, is a class of weighted length of the shortest path tree. Its structure can be used to give the H