$2.$ Assume that a queue, q$,$ has the elements $16539,$ from front to back.

a$)$ Assume that you remove the elements from the queue and push them onto a stack. List the contents

of the stack from top to bottom.

b$)$ Assume that you remove the elements from the queue and push them onto a priority queue. Then

remove the elements from the priority queue and push them back onto the queue. List the contents of

the queue from front to back.