一维数组离散卷积
................\12321.cpp
................\12323.dsp
................\12323.dsw
................\12323.ncb
................\12323.opt
................\12323.plg
................\Debug
................\.....\12321.obj
................\.....\12323.exe
................\.....\12323.ilk
................\.....\12323.pch
................\.....\12323.pdb
................\.....\vc60.idb
................\.....\vc60.pdb