More Problems

• Implement a function to delete nodes from a doubly linked list where the sum of the previous and next nodes is greater than the current node value.
• Write a function to check if a singly linked list contains any repeating elements without using extra space.
• How do you reverse nodes between two given positions m and n in a circular singly linked list?
• Implement a function to flatten a circular doubly linked list where each node has a child pointer.
• Write a function to remove duplicate nodes from an unsorted singly linked list without using extra memory.
• How do you rearrange nodes in a doubly linked list such that all positive values come before negative values?
• Implement a function to reverse the second half of a circular singly linked list.
• Write a function to merge k sorted singly linked lists into one sorted doubly linked list.