| 2. Add Two Numbers | | | Solve | Medium | | |
| 19. Remove Nth Node From End of List | | | Solve | Medium | | |
| 24. Swap Nodes in Pairs | | | Solve | Medium | | |
| 61. Rotate List | | | Solve | Medium | | |
| 82. Remove Duplicates from Sorted List II | | | Solve | Medium | | |
| 86. Partition List | | | Solve | Medium | | |
| 92. Reverse Linked List II | | | Solve | Medium | | |
| 109. Convert Sorted List to Binary Search Tree | | | Solve | Medium | | |
| 114. Flatten Binary Tree to Linked List | | | Solve | Medium | | |
| 116. Populating Next Right Pointers in Each Node | | | Solve | Medium | | |
| 117. Populating Next Right Pointers in Each Node II | | | Solve | Medium | | |
| 138. Copy List with Random Pointer | | | Solve | Medium | | |
| 142. Linked List Cycle II | | | Solve | Medium | | |
| 143. Reorder List | | | Solve | Medium | | |
| 146. LRU Cache | | | Solve | Medium | | |
| 147. Insertion Sort List | | | Solve | Medium | | |
| 148. Sort List | | | Solve | Medium | | |
| 237. Delete Node in a Linked List | | | Solve | Medium | | |
| 328. Odd Even Linked List | | | Solve | Medium | | |
| 355. Design Twitter | | | Solve | Medium | | |
| 369. Plus One Linked List | | | Solve | Medium | | |
| 379. Design Phone Directory | | | Solve | Medium | | |
| 382. Linked List Random Node | | | Solve | Medium | | |
| 426. Convert Binary Search Tree to Sorted Doubly Linked List | | | Solve | Medium | | |
| 430. Flatten a Multilevel Doubly Linked List | | | Solve | Medium | | |
| 445. Add Two Numbers II | | | Solve | Medium | | |
| 622. Design Circular Queue | | | Solve | Medium | | |
| 641. Design Circular Deque | | | Solve | Medium | - | |
| 707. Design Linked List | | | Solve | Medium | | |
| 708. Insert into a Sorted Circular Linked List | | | Solve | Medium | | |
| 725. Split Linked List in Parts | | | Solve | Medium | | |
| 817. Linked List Components | | | Solve | Medium | | |
| 1019. Next Greater Node In Linked List | | | Solve | Medium | | |
| 1171. Remove Zero Sum Consecutive Nodes from Linked List | | | Solve | Medium | | |
| 1265. Print Immutable Linked List in Reverse | | | Solve | Medium | | |
| 1367. Linked List in Binary Tree | | | Solve | Medium | | |
| 1472. Design Browser History | | | Solve | Medium | | |
| 1634. Add Two Polynomials Represented as Linked Lists | | | Solve | Medium | | |
| 1669. Merge In Between Linked Lists | | | Solve | Medium | | |
| 1670. Design Front Middle Back Queue | | | Solve | Medium | | |
| 1721. Swapping Nodes in a Linked List | | | Solve | Medium | | |
| 1797. Design Authentication Manager | | | Solve | Medium | | |
| 1836. Remove Duplicates From an Unsorted Linked List | | | Solve | Medium | | |
| 2046. Sort Linked List Already Sorted Using Absolute Values | | | Solve | Medium | - | |
| 2058. Find the Minimum and Maximum Number of Nodes Between Critical Points | | | Solve | Medium | | |
| 2074. Reverse Nodes in Even Length Groups | | | Solve | Medium | | |
| 2095. Delete the Middle Node of a Linked List | | | Solve | Medium | | |
| 2130. Maximum Twin Sum of a Linked List | | | Solve | Medium | | |
| 2181. Merge Nodes in Between Zeros | | | Solve | Medium | | |
| 2289. Steps to Make Array Non-decreasing | | | Solve | Medium | | |
