4-26 大话dct

http://www.chinavideo.org/viewthread.php?tid=12198&highlight=

http://www.cnblogs.com/cplusplus/archive/2012/04/29/2476105.html

 

另外一个比较详细的

http://www.cnblogs.com/cplusplus/archive/2012/04/29/2476105.html