Topic: linked-list-problem / Level: beginner

• 151. Write a function to check if a linked list has duplicates.
• 152. How do you remove duplicates from a circular linked list?
• 153. Implement a function to merge two circular doubly linked lists.
• 154. Write a function to move all odd-valued nodes to the beginning of a singly linked list.
• 155. How do you find the k-th element from the start of a doubly linked list?
• 156. Implement a function to reverse a circular singly linked list.
• 157. Write a function to concatenate a doubly linked list to a circular linked list.
• 158. How do you find the largest element in a circular doubly linked list?
• 159. Implement a function to delete nodes from a doubly linked list based on a condition.
• 160. Write a function to check if a doubly linked list is sorted.
• 161. How do you split a circular doubly linked list into two halves?
• 162. Implement a function to insert a node at the head of a circular doubly linked list.
• 163. Write a function to delete all nodes with even values in a doubly linked list.
• 164. How do you find the sum of elements in a circular doubly linked list?
• 165. Implement a function to remove the nth node from the end of a circular linked list.
• 166. Write a function to swap the data between two nodes in a doubly linked list.
• 167. How do you rotate a circular doubly linked list by k positions?
• 168. Implement a function to delete the middle node in a circular singly linked list.
• 169. Write a function to find the length of a circular doubly linked list.
• 170. How do you reverse the data in a circular doubly linked list, leaving the structure unchanged?
• 171. Implement a function to delete all nodes with odd values in a circular linked list.
• 172. Write a function to find the sum of nodes at even positions in a circular singly linked list.
• 173. How do you insert a node in a circular doubly linked list in sorted order?
• 174. Implement a function to remove all occurrences of a given value from a circular linked list.
• 175. Write a function to find the node with the smallest value in a circular linked list.
• 176. How do you merge two linked lists where one is sorted in ascending order and the other in descending order?
• 177. Implement a function to delete all nodes from a circular doubly linked list.
• 178. Write a function to check if a circular linked list is sorted in ascending order.
• 179. How do you rotate a circular singly linked list to the left by k positions?
• 180. Implement a function to check if two circular linked lists are identical.
• 181. Write a function to reverse a linked list in groups of alternating sizes.
• 182. How do you split a doubly linked list into two lists based on a given pivot value?
• 183. Implement a function to delete nodes that are greater than the sum of their neighboring nodes in a linked list.
• 184. Write a function to convert a circular linked list into a doubly linked list.
• 185. How do you find the index of a given node in a doubly linked list?
• 186. Implement a function to merge two circular singly linked lists, removing duplicates.
• 187. Write a function to insert a node at the tail of a circular doubly linked list.
• 188. How do you count the occurrences of a given value in a circular doubly linked list?
• 189. Implement a function to find the middle node of a circular doubly linked list.
• 190. Write a function to check if a circular singly linked list is empty.
• 191. How do you remove the first node from a circular doubly linked list?
• 192. Implement a function to insert a node at the kth position in a circular doubly linked list.
• 193. Write a function to delete the last node of a circular doubly linked list.
• 194. How do you convert a doubly linked list into a circular doubly linked list?
• 195. Implement a function to reverse every k nodes in a circular linked list.
• 196. Write a function to find the sum of all nodes in a circular singly linked list.
• 197. How do you delete every alternate node in a circular doubly linked list?
• 198. Implement a function to reverse the order of a circular doubly linked list.
• 199. Write a function to check if a circular singly linked list is a palindrome.
• 200. How do you merge two circular doubly linked lists into one circular singly linked list?

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