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(a).
Sketch a doubly linked list holding the same words in the same alphabetical order as those in the array below.
[4]["Apple","Lemon","Peach"]
(b).
In contrast to doubly linked lists, outline one advantage and one disadvantage of ordinary singly linked lists.
[4](c).
In contrast to singly linked list, describe why using a doubly linked list to implement a stack or queue data structure is unnecessary.
[2]
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