Of the three variations of linked lists (circular, with header and trailer nodes

Question

Of the three variations of linked lists (circular, with header and trailer nodes, and doubly linked), which would be most appropriate for each of the following applications? You must search a list for a key and return the keys of the two elements that come before it and the keys of the two elements that come after it. A text file contains integer elements, one per line, sorted from smallest to largest. You must read the values from the file and create a sorted linked list containing the values. You need a list that is short and frequently becomes empty. You want the optimal implementation for adding an element into the empty list and removing the last element from the list.

Explanation / Answer

a. List with header and trailer nodes

b. Doubly Linked List

c. Circular

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