More Problems

• Write a function to count the number of nodes in a circular doubly linked list.
• How do you swap the head and tail of a doubly linked list?
• Implement a function to reverse the data in a linked list, leaving the structure unchanged.
• Write a function to delete every node that is greater than its previous node in a linked list.
• How do you rearrange a linked list so that all nodes divisible by 3 appear at the end?
• Implement a function to find the smallest element in a doubly linked list.
• How do you insert a node at the k-th position in a circular linked list?
• Write a function to rotate a doubly linked list by k positions.