说明：  创建一个哈夫曼树，从键盘输入自己的名字和各个字母的权值，输出哈夫曼树。对哈夫曼树进行编码并显示编码结果，完成译码过程并显示。
(Create a Huffman tree, from the keyboard to enter their names and weights of each letter, the output Huffman tree. Huffman coding and the coding result display, and displays the decoding process.)