说明：  对文件夹中的文件自动编号或恢复为旧文件名。当然，经过小的修改，也可完成其他批量修改文件名的功能，如批量修改后缀名等等。利用MATLAB的GUI技术，做了个界面，方便用户使用
(Automatic numbering files in the folder or revert to the old file name. Of course, after minor modifications, to be completed by the functions of the other batch change file names, such as batch modify the extension. MATLAB GUI technology, made the interface, user-friendly)