Detect anagram in linked list
Last updated: April 15, 2026
Quick Overview
Given a linked list of characters, determine if any two contiguous sublists are anagrams of each other. The function should return true if such an anagram pair exists, and false otherwise. The input will be a singly linked list, and the output will be a boolean value.
Atlassian
April 15, 202662
8
3,857 solved
Given a linked list of characters, determine if any two contiguous sublists are anagrams of each other. The function should return true if such an anagram pair exists, and false otherwise. The input will be a singly linked list, and the output will be a boolean value.
Coding interviews at Atlassian focus on problem-solving approach as much as the final solution. The interviewer wants to see you break down the problem, consider edge cases, and optimize iteratively. Communication throughout the process is key.
What the Interviewer Expects
- Recognize the underlying problem pattern (sliding window, two pointers, BFS/DFS, etc.)
- Discuss multiple approaches and trade-offs before coding
- Implement an optimal solution with clean, production-quality code
- Handle all edge cases including boundary conditions and invalid input
- Optimize both time and space complexity with clear justification
- Test your solution systematically with well-chosen examples
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
- Can you optimize the space complexity of your solution?
- What if the input doesn't fit in memory?
- How would you modify your solution to handle streaming input?
- What happens if the input contains duplicates?
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Practice DSA ProblemsSample Answer
Problem Analysis
To determine if any two contiguous sublists in a linked list of characters are anagrams of each other, we need to recognize a pattern that allows us to efficiently compare these sublists. The sliding ...
Approach
- Character Count: We will use a frequency dictionary to count characters in the current window.
- Sliding Window Setup: Start with a window of size 1 and grow it until the end of the list. ...
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