More Problems

• How do you reverse every alternate k-th node in a circular singly linked list while maintaining the list structure?
• Implement a function to detect the first common node in three linked lists that may have cycles.
• Write a function to merge k unsorted linked lists into one sorted circular singly linked list using merge sort.
• How do you flatten a doubly linked list where each node contains both a next pointer and a sibling pointer to another list?
• Implement a function to rotate a circular singly linked list so that every second node becomes the new head.
• Write a function to detect and merge two linked lists where both lists contain multiple cycles and backward pointers.
• How do you reverse every k-th node in a multilevel doubly linked list where nodes have child and sibling pointers?
• Write a function to rotate a circular singly linked list such that the node with the lowest value becomes the new head.