reverse a linked list, benefit of reversing a doubly linked list ?

Question

Accepted Answer

Reversing a linked list involves changing the direction of pointers, while reversing a doubly linked list allows for traversal in both directions.

To reverse a linked list, iterate through the list and change the direction of pointers to point to the previous node instead of the next node.
In a doubly linked list, reversing allows for traversal in both directions, making operations like deletion and insertion more efficient.
Example: Reversing a linked list: 1 -> 2 -> 3 -> 4 -> null becomes 4 -> 3 -> 2 -> 1 -> null
Example: Reversing a doubly linked list: 1 <-> 2 <-> 3 <-> 4 becomes 4 <-> 3 <-> 2 <-> 1

Popular interview questions of Senior Engineer 1