Data Structures and Algorithms The Complete Masterclass - Reversing Linked List - II

What is the initial setup for reversing a singly linked list?

• Initialize a stack to store nodes.

• Define three pointers: preceding, current, and succeeding.

• Use a recursive function to reverse the list.

• Create a new linked list to store reversed nodes.

What condition is used to continue the while loop in the reversal process?

• While the succeeding node is not null.

• While the current node is not null.

• While the preceding node is not null.

• While the head node is not null.

What is the role of the 'current' pointer in the reversal process?

• It is used to traverse the list backwards.

• It stores the previous node.

• It points to the next node to be reversed.

• It is used to store the head of the list.

What is the final step in the reversal process before returning the new head?

• Swap the head and tail nodes.

• Return the preceding node as the new head.

• Set the current node to null.

• Update the succeeding node to point to the preceding node.

Why is it important to understand the linked list reversal problem?

• It is a common interview question.

• It is used in sorting algorithms.

• It helps in understanding binary trees.

• It is essential for database management.

What is the time complexity of the linked list reversal algorithm?

• O(n^2)

• O(1)

• O(log n)

• O(n)

What is the space complexity of the linked list reversal algorithm?

• O(log n)

• O(1)

• O(n)

• O(n^2)