Objective: 
  Test differnet cpp complier (Visual Studio C++ /g++) performance for STL 

Howto 
  1). compile  with no optimize option 
  2). compile  with O2 

Result: 
  -- Test with  Visual Studio C++ 2010 on my labtop(Intel I3) shows  the time used for 2) is only 1/10 of time used for 1). it used 1 second only for 2)   
  -- Test with g++ 4.6(on my raspberry box) shows the time used for 2) is half of the time used for 1)  (it used 38 second fort  2)