哈夫曼树的构建，源码实现，可用于排序等功能的实现-the implement of Huffman

利用得到的权值构建huffman树、并输出每个字符对应的huffman编码，另外动态演示该哈夫曼树的生成过程。-Right to use the output value to construct the Huffman tree, and each character corresponding Huffman encoding, and dynamic display the generation process of the Huffman tree .