Transform linked list to sorted array
Last updated: September 4, 2025
Quick Overview
Given a linked list, write a function to transform it into a sorted array. The linked list may contain duplicate values, and your output should be a one-dimensional array containing the elements of the linked list in ascending order. Ensure that your solution efficiently handles the linked list traversal and sorting.
Databricks
September 4, 2025192
12
4,728 solved
Given a linked list, write a function to transform it into a sorted array. The linked list may contain duplicate values, and your output should be a one-dimensional array containing the elements of the linked list in ascending order. Ensure that your solution efficiently handles the linked list traversal and sorting.
This coding problem is frequently asked during Onsite at Databricks. The interviewer is testing your ability to translate a problem into clean, working code while discussing time and space complexity. Databricks expects candidates to write production-quality code, not just solve the puzzle.
What the Interviewer Expects
- Quickly identify the optimal approach and its theoretical basis
- Handle complex algorithm design with multiple interacting components
- Write concise, elegant code under time pressure
- Prove correctness of your approach and discuss alternative solutions
- Optimize beyond the obvious: discuss constant factor improvements
- Address follow-up variations and explain how the solution generalizes
Key Topics to Cover
How to Approach This
- Clarify input constraints and edge cases before writing code.
- Walk through your approach verbally and confirm with the interviewer before coding.
- Start with a brute force solution, then optimize. Mention time and space complexity.
- Test your solution with examples, including edge cases like empty input or duplicates.
- Consider common patterns: sliding window, two pointers, hash map, BFS/DFS, dynamic programming.
Possible Follow-up Questions
- How would you modify your solution to handle streaming input?
- How would you test this solution thoroughly?
- What if the input doesn't fit in memory?
- Can you optimize the space complexity of your solution?
Sharpen Your Skills on Codemia
Practice similar problems with our interactive workspace, get AI feedback, and track your progress.
Practice DSA ProblemsSample Answer
Problem Analysis
To transform a linked list into a sorted array, we need to consider the properties of linked lists and the requirements of sorting. The linked list allows us to traverse elements sequentially but does...
Approach
- Initialize an empty list to hold the elements from the linked list.
- Traverse the linked list from the head node to the end:
- For each node, append its value to the list.
- Once all elements...
Submit Your Answer
