Topic: linked-list-problem / Level: beginner

• 801. Write a function to delete the last node in a circular singly linked list.
• 802. How do you count the number of nodes in a circular doubly linked list that are divisible by 3?
• 803. Implement a function to reverse the order of every second node in a doubly linked list.
• 804. Write a function to merge two sorted linked lists into a single circular singly linked list.
• 805. How do you reverse the nodes in the first half of a circular singly linked list?
• 806. Implement a function to count the number of nodes with odd values in a circular doubly linked list.
• 807. Write a function to delete every alternate node in a doubly linked list.
• 808. How do you find the middle node in a circular singly linked list without using extra space?
• 809. Implement a function to reverse every second node in a singly linked list.
• 810. Write a function to count the number of nodes whose values are divisible by 5 in a circular singly linked list.
• 811. How do you delete every second node in a circular singly linked list?
• 812. Implement a function to reverse every k nodes in a doubly linked list.
• 813. Write a function to remove the node at the second position in a circular doubly linked list.
• 814. How do you find the largest node in a circular singly linked list?
• 815. Implement a function to merge two unsorted linked lists into one sorted doubly linked list.
• 816. Write a function to reverse the first k nodes in a circular doubly linked list.
• 817. How do you delete the node before the last node in a circular singly linked list?
• 818. Implement a function to count the number of even-positioned nodes in a circular singly linked list.
• 819. Write a function to find the node at the k-th position in a doubly linked list.
• 820. How do you reverse the second half of a singly linked list?
• 821. Implement a function to delete every node with an odd value in a circular doubly linked list.
• 822. Write a function to check if a circular singly linked list contains an odd number of nodes.
• 823. How do you merge two unsorted linked lists into a sorted circular singly linked list?
• 824. Implement a function to reverse the last n nodes in a doubly linked list.
• 825. Write a function to delete the second last node in a singly linked list.
• 826. How do you find the second largest value in a doubly linked list?
• 827. Implement a function to reverse the first half of a circular singly linked list.
• 828. Write a function to count the number of prime nodes in a circular singly linked list.
• 829. How do you delete the middle node from a doubly linked list?
• 830. Implement a function to reverse every second node in a circular singly linked list.
• 831. Write a function to check if two doubly linked lists have the same structure and values.
• 832. How do you remove all nodes with values greater than a given threshold in a circular singly linked list?
• 833. Implement a function to reverse the order of nodes in a doubly linked list in groups of three.
• 834. Write a function to delete the node at the second position in a circular singly linked list.
• 835. How do you count the number of odd nodes in a singly linked list?
• 836. Implement a function to reverse the first k nodes in a circular singly linked list.
• 837. Write a function to check if two circular doubly linked lists are identical.
• 838. How do you delete every second node in a singly linked list?
• 839. Implement a function to find the middle node in a doubly linked list.
• 840. Write a function to reverse the last n nodes in a circular singly linked list.
• 841. How do you find the sum of even-positioned nodes in a circular doubly linked list?
• 842. Implement a function to merge two sorted circular doubly linked lists into one sorted list.
• 843. Write a function to delete the last node in a circular doubly linked list.
• 844. How do you check if a doubly linked list is a palindrome?
• 845. Implement a function to reverse the second half of a circular doubly linked list.
• 846. Write a function to remove the node at the k-th position in a singly linked list.
• 847. How do you count the number of nodes with prime values in a circular singly linked list?
• 848. Implement a function to delete every second node in a circular singly linked list.
• 849. Write a function to check if a singly linked list is sorted in ascending order.
• 850. How do you reverse every third node in a circular doubly linked list?

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• Intermediate
• Advanced