More Problems

• Write a function to reverse nodes in a singly linked list in groups of k without recursion.
• How do you rotate a doubly linked list by k positions while keeping the structure intact?
• Implement a function to merge k sorted doubly linked lists into one sorted circular singly linked list.
• Write a function to rearrange nodes in a circular singly linked list such that all even values come before odd values.
• How do you remove nodes from a singly linked list whose values are less than the average of the list?
• Implement a function to rotate a circular doubly linked list left by k positions using recursion.
• Write a function to check if two singly linked lists are mirror images of each other.
• How do you reverse every third node in a doubly linked list without using extra space?