add  build_max_heap modified:   ch06/heap.hpp
add  build_max_heap
modified:   ch06/heap.hpp

opensourceDA/CLRS,tushar2708/CLRS,tushar2708/CLRS,opensourceDA/CLRS,Mooophy/CLRS,tushar2708/CLRS,Mooophy/CLRS,Mooophy/CLRS,opensourceDA/CLRS,Mooophy/CLRS,tushar2708/CLRS,opensourceDA/CLRS