please using C++ Pointer only!!!! pointer!!! pointer!!!!!!!

Write a pair of functions to find the union and intersection of two sorted arrays:

T* union(T* p1, int size1, T* p2, int size 2, int& u_size);

T* intersection(T* p1, int size1, T* p2, int size 2, int& i_size);

both of these functions are templated.

thank you!