Most Asked Linked List LeetCode Questions in Google Interviews
Linked List is a fundamental data structure commonly tested in Google software engineering interviews. These problems evaluate your understanding of pointers, memory handling, and efficient traversal techniques.
Many questions involve patterns like fast and slow pointers, reversing lists, and cycle detection, making Linked List a highly important topic for interviews.
In this guide, we have compiled some of the most frequently asked Linked List problems reported in Google interviews. Each question includes its difficulty level, interview frequency, and a direct link to the LeetCode problem so that you can start practicing immediately.
Below is a curated list of Linked List LeetCode questions asked in Google interviews.
| Sl.No | Question | Difficulty | Frequency | LeetCode Link |
|---|
| 1 | LRU Cache | MEDIUM | 79.20% | Solve |
| 2 | Add Two Numbers | MEDIUM | 77.90% | Solve |
| 3 | Merge k Sorted Lists | HARD | 71.40% | Solve |
| 4 | Merge Two Sorted Lists | EASY | 66.00% | Solve |
| 5 | Reverse Nodes in k-Group | HARD | 57.30% | Solve |
| 6 | Reverse Linked List | EASY | 56.70% | Solve |
| 7 | Remove Nth Node From End of List | MEDIUM | 54.80% | Solve |
| 8 | Reverse Linked List II | MEDIUM | 46.60% | Solve |
| 9 | Swap Nodes in Pairs | MEDIUM | 45.70% | Solve |
| 10 | Rotate List | MEDIUM | 43.80% | Solve |
| 11 | Copy List with Random Pointer | MEDIUM | 39.20% | Solve |
| 12 | Remove Duplicates from Sorted List | EASY | 39.10% | Solve |
| 13 | Flatten Binary Tree to Linked List | MEDIUM | 37.40% | Solve |
| 14 | Partition List | MEDIUM | 35.30% | Solve |
| 15 | Linked List Cycle | EASY | 35.20% | Solve |
| 16 | Design Browser History | MEDIUM | 32.00% | Solve |
| 17 | Convert Sorted List to Binary Search Tree | MEDIUM | 26.90% | Solve |
| 18 | Design a Text Editor | HARD | 25.00% | Solve |
| 19 | Linked List Components | MEDIUM | 25.00% | Solve |
| 20 | Delete Nodes From Linked List Present in Array | MEDIUM | 25.00% | Solve |
| 21 | Linked List in Binary Tree | MEDIUM | 25.00% | Solve |
| 22 | Remove Duplicates from Sorted List II | MEDIUM | 22.10% | Solve |
| 23 | Insertion Sort List | MEDIUM | 20.80% | Solve |
| 24 | Populating Next Right Pointers in Each Node | MEDIUM | 19.00% | Solve |
| 25 | Find the Minimum and Maximum Number of Nodes Between Critical Points | MEDIUM | 12.50% | Solve |
| 26 | Reorder List | MEDIUM | 2.15% | Solve |
| 27 | Intersection of Two Linked Lists | EASY | 1.72% | Solve |
| 28 | Max Stack | EASY | 1.60% | Solve |
| 29 | Sort List | MEDIUM | 1.49% | Solve |
| 30 | Plus One Linked List | MEDIUM | 1.34% | Solve |
| 31 | Flatten a Multilevel Doubly Linked List | MEDIUM | 1.08% | Solve |
| 32 | Linked List Cycle II | MEDIUM | 0.91% | Solve |
| 33 | Insert into a Sorted Circular Linked List | MEDIUM | 0.84% | Solve |
| 34 | Linked List Random Node | MEDIUM | 0.28% | Solve |
| 35 | Design Skiplist | HARD | 0.00% | Solve |
You can also track your progress and practice these questions using our tool:
Google LeetCode Interview Questions Tracker
How to Prepare for Linked List Questions in Google Interviews
To perform well in Google coding interviews, it’s important to build a strong understanding of linked list operations and patterns.
Some useful preparation strategies include:
- Practicing fast and slow pointer techniques (cycle detection)
- Solving problems involving reversing linked lists
- Understanding merging and splitting linked lists
- Learning how to handle edge cases (null pointers, single node)
- Optimizing solutions using in-place manipulation
Mastering linked list problems will improve your problem-solving skills and pointer intuition, which are crucial in interviews.
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