vector stl 容器的demo，希望对大家有用-vector stl container demo

1. Access out-of-range element 2. Use std::out_of_range Exception for vector 3. Catch out_of_range exception -1. Access out-of-range element 2. Use std::out_of_range Exception for vector 3. Catch out_of_range exception

Write a C++ program (using STL preferably) to implement a vector-based spare matrix class, following the concepts of “data abstraction” and “data encapsulation”. Your class should provide the member function of smTranspose as discussed in class