该小程序为哈弗曼编码系统，带有一个小界面，主要执行的功能是对输入的数据进行编码，译码，构造并打印哈夫曼树。并且将输入的数据进行保存。-The applet is Felicity Huffman coding system, with a small interface, main function is performed on the input data encoding, decoding, construct and print a Huffman tree. Data entered and saved.