中文说明： 本程序主要是为了实现Fano编码的多种可能的存在方案，对于输入的信源概率，由于不同的排列节点顺序会导致出现不同的解决方案。程序会自动实现信源熵、编码效率、平均码长与码长误差的计算。从而寻找存在的最优解决方案。所用语言为Matlab，是一次课题的尝试。
English Description：
&The main purpose of this program is to realize a variety of possible existence schemes of Fano coding. For the input source probability, different solutions will appear due to different node order. The program will automatically calculate the source entropy, coding efficiency, average code length and code length error. So as to find the best solution. The language used is matlab, which is an attempt of the subject.