More Problems

• How do you implement a sparse linked list that supports fast insertions and deletions at arbitrary positions?
• Implement a function to reverse the second half of a circular doubly linked list while preserving the first half.
• Write a function to rearrange nodes in a circular singly linked list such that the list alternates between even and odd values.
• How do you merge two linked lists where each node has a forward and backward pointer, and the lists are sorted in opposite orders?
• Implement a function to find the intersection point of two linked lists that may have cycles.
• Write a function to flatten a linked list where each node contains a linked list as its child.
• How do you delete all nodes in a circular doubly linked list whose values are divisible by a given number using recursion?
• Implement a function to rotate a doubly linked list so that the list becomes sorted in descending order.