Consider a linked list implementation where we have both a pointer to the heac the list (called head) and a pointer to the tail of the list (called tail). For this new data structure, which of the following operations will require traversing the whole list? Delete the last node Delete the first node Insert a new node after the last node O Insert a new node before the first node
Consider a linked list implementation where we have both a pointer to the heac the list (called head) and a pointer to the tail of the list (called tail). For this new data structure, which of the following operations will require traversing the whole list? Delete the last node Delete the first node Insert a new node after the last node O Insert a new node before the first node
C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter17: Linked Lists
Section: Chapter Questions
Problem 5SA
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in c++, Deallocating memory pointed to by the head of a Linked List always deallocates the memory used by whole Linked List, True or False?
Expert Solution
Step 1
Answer :-
The deletion of a node in a doubly linked list can be divided into three main categories:
- After the deletion of the head node.
- After the deletion of the middle node.
- After the deletion of the last node.
All three mentioned cases can be handled in two steps if the pointer of the node to be deleted and the head pointer is known.
- If the node to be deleted is the head node then make the next node as head.
- If a node is deleted, connect the next and previous node of the deleted node.
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