霍夫曼编解码
............\3.cpp
............\3.dsp
............\3.dsw
............\3.ncb
............\3.opt
............\3.plg
............\Debug
............\.....\3.exe
............\.....\3.ilk
............\.....\3.obj
............\.....\3.pdb
............\.....\vc60.idb
............\.....\vc60.pdb