Algorithm in latex, and install new package

http://andrewjpage.com/index.php?/archives/55-Algorithms-in-Latex.html

http://wiki.ctex.org/index.php/LaTeX/%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86#.E5.AE.89.E8.A3.85.E9.A2.9D.E5.A4.96.E7.9A.84.E5.AE.8F.E5.8C.85