使用 C++ 的 StringBuilder 提升 4350% 的性能
http://blog.jobbole.com/109663/?utm_source=blog.jobbole.com&utm_medium=relatedPosts
http://msdn.microsoft.com/en-us/library/system.text.stringbuilder.aspx
http://blog.jobbole.com/109663/?utm_source=blog.jobbole.com&utm_medium=relatedPosts
http://msdn.microsoft.com/en-us/library/system.text.stringbuilder.aspx