This homework is due tonight. from c++ plus data structures 5th ed. by nell dale.
13. an unsorted list adt is to be extended by the addition of a member function head, which has the following precondition and postcondition:
precondition: list has been initialized and is not empty.
postcondtion: return value is the last item inserted in the list.
(a) will this addition be easy to implement in the array-based class unsorted-type? explain.
(b) will this addition be easy to implement in the linked class unsortedtype?

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