Transform linked list to sorted array
Last updated: January 11, 2026
Quick Overview
Given a linked list of integers, write a function to transform it into a sorted array. The function should traverse the linked list, extract the elements, sort them in ascending order, and return the resulting array. The input is the head of the linked list, and the output should be an array of integers.
Jump Trading
January 11, 202610
12
3,487 solved
Given a linked list of integers, write a function to transform it into a sorted array. The function should traverse the linked list, extract the elements, sort them in ascending order, and return the resulting array. The input is the head of the linked list, and the output should be an array of integers.
Jump Trading uses this problem in the Technical Screen to evaluate your algorithmic thinking. They expect you to discuss multiple approaches, analyze trade-offs between them, and implement the optimal solution with clean, readable code.
What the Interviewer Expects
- Identify the correct data structure and algorithm for the problem
- Write clean, bug-free code with proper variable naming
- Analyze time and space complexity correctly
- Handle basic edge cases (empty input, single element)
- Communicate your thought process while coding
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 test this solution thoroughly?
- What is the worst-case input for your solution?
- What happens if the input contains duplicates?
- Can you solve this iteratively instead of recursively (or vice versa)?
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Practice DSA ProblemsSample Answer
Problem Analysis
To transform a linked list into a sorted array, we can use the array extraction and sorting pattern. The steps include traversing the linked list to collect its elements into an array and then sor...
Approach
- Traverse the Linked List: Start from the head of the linked list and iterate through each node until reaching the end. During this traversal, we will collect all the integer values into a Pytho...
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