Question: Six strings are read from input and inserted into airportList. airportIterator is assigned with the ListIterator of airportList and is moved to the end of

Six strings are read from input and inserted into airportList. airportIterator is assigned with the ListIterator of airportList and is moved to the end of airportList. Complete the following tasks:
Move airportIterator between the elements at index 3 and index 4.
Use airportIterator to insert "IAD" between the elements at index 3 and index 4.

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