图算法

http://www.cppblog.com/tanky-woo/archive/2011/01/19/138855.html

http://www.cppblog.com/tanky-woo/archive/2011/01/17/138688.html

http://www.wutianqi.com/?p=1890

http://www.wutianqi.com/?p=1892

http://www.wutianqi.com/?p=1894

http://www.itnose.net/detail/6067045.html