C++ Linked List and Pointer Program Tracing

Explain the structure of a node in a linked list.

• In a linked list, a node is defined as { value: data, next: reference_to_next_node, prev: reference_to_previous_node }

• A node in a linked list consists of { data: value, prev: reference_to_previous_node }

• The structure of a node in a linked list is as follows: { data: value, next: reference_to_next_node }

• The structure of a node in a linked list is { value: data, next: reference_to_next_node }

How can you manipulate pointers in a linked list to insert a new node?

• Delete the entire linked list before inserting a new node

• Change the data of the existing nodes instead of inserting a new node

• Randomly shuffle the nodes in the linked list

• Manipulate the pointers of the nodes before and after the insertion point in the linked list.

Trace the execution of a C++ program that creates a linked list with values 10, 20, and 30.

• The C++ program creates a linked list with values 40, 50, and 60 by linking three Node objects together.

• The C++ program creates a linked list with values 10, 20, and 30 by linking three Node objects together.

• The C++ program creates a linked list with values 15, 25, and 35 by linking three Node objects together.

• The C++ program creates a linked list with values 5, 15, and 25 by linking three Node objects together.

What is the role of memory allocation in a linked list?

• Memory allocation in a linked list involves allocating memory only once for the entire list

• Memory allocation in a linked list involves dynamically allocating memory for each node as it is created.

• Memory allocation in a linked list is not necessary

• Memory allocation in a linked list involves allocating memory for the entire list at once

Describe the process of inserting a new node at the beginning of a linked list.

• Insert the new node at the end of the linked list

• Update the next pointer of the last node to point to the new node

• Delete the current head node and set the new node as the head

• Create a new node, set its next pointer to the current head, and update the head to the new node.

How do you delete a node from a linked list using pointers?

• Change the data of the node to be deleted to a different value.

• Create a new node and replace the node to be deleted.

• Delete the node by setting its value to null.

• Adjust the next pointer of the previous node to skip the node to be deleted and point directly to the next node.

Walk through the traversal of a linked list using pointers.

• Walk through the linked list by following the pointers from one node to the next until reaching the end.

• Skip every other node while traversing the linked list

• Jump to a random node in the linked list

• Start from the end of the linked list and move backwards

What are the advantages of using pointers in a linked list?

• Dynamic memory allocation, efficient insertion and deletion, easy traversal

• No memory management, high memory consumption, limited data manipulation

• Static memory allocation, slow insertion and deletion, difficult traversal

• Limited memory usage, inefficient search operations, complex data structure

Explain the concept of dynamic memory allocation for a linked list.

• Dynamic memory allocation in a linked list means that memory is allocated as nodes are added to the list during program execution, allowing for flexibility in size.

• Dynamic memory allocation in a linked list means that memory is allocated statically at compile time.

• Dynamic memory allocation in a linked list means that memory is deallocated as nodes are removed from the list.

• Dynamic memory allocation in a linked list means that memory is allocated only once at the beginning of the program.

Discuss the process of inserting a new node at the end of a linked list.

• Delete the last node and replace it with the new node

• Start from the middle of the list and insert the new node

• Insert the new node at the beginning of the list

• Traverse the linked list to reach the last node. Update the 'next' pointer of the last node to point to the new node.