The driver class of your program will have a private and static method called add that adds two

polynomials.

To add two polynomials, your program traverses both lists and examines the two terms at the

current iterator position. If the exponent of one is smaller than the exponent of the other, then

insert the larger one into the result and advance that list$$s iterator. If the exponents are equal,

then create a new term with that exponent and the sum of two coefficients and advance both

iterators.