In a singly linked list, how do you reverse the list?

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Question: In a singly linked list, how do you reverse the list?

Options:

Correct Answer: Iterate and change pointers

Solution:

To reverse a singly linked list, you can iterate through the list and change the next pointers of each node.

In a singly linked list, how do you reverse the list?

In a singly linked list, how do you reverse the list?

Step 1: Start with three pointers: previous (set to null), current (set to the head of the list), and next (set to null).
Step 2: While the current pointer is not null, do the following:
a. Set the next pointer to the current's next node.
b. Change the current's next pointer to point to the previous node.
c. Move the previous pointer to the current node.
d. Move the current pointer to the next node (which you saved earlier).
Step 3: Once the loop is done, set the head of the list to the previous pointer, as it will now be the new head.

Singly Linked List – A data structure consisting of nodes where each node contains a value and a pointer to the next node.
Pointer Manipulation – The process of changing the next pointers of nodes to reverse the order of the list.
Iteration – The method of traversing the list node by node to perform the reversal.