More Problems

• How do you rotate a doubly linked list to the right by k positions using an iterative approach?
• Implement a function to reverse every second node in a circular singly linked list without recursion.
• Write a function to merge two unsorted singly linked lists into one sorted circular doubly linked list.
• How do you detect and remove a cycle in a singly linked list using a stack?
• Implement a function to reverse nodes in groups of k in a circular singly linked list without recursion.
• Write a function to rearrange nodes in a doubly linked list such that all even-positioned nodes come before odd-positioned nodes.
• How do you rotate a circular singly linked list left by k positions without recursion?
• Implement a function to flatten a multilevel circular doubly linked list where each node may have both next and child pointers.