Detect anagram in array
Last updated: June 8, 2026
Quick Overview
Given array, detect all occurrences of the palindrome pattern.
Neon
June 8, 20260
11
2,572 solved
Given array, detect all occurrences of the palindrome pattern.
This coding problem is frequently asked during Take-home Project at Neon. The interviewer is testing your ability to translate a problem into clean, working code while discussing time and space complexity. Neon expects candidates to write production-quality code, not just solve the puzzle.
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 happens if the input contains duplicates?
- How would you modify your solution to handle streaming input?
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Problem Analysis
To detect anagrams in an array for a given palindrome pattern, we need to recognize that an anagram is simply a rearrangement of letters. A palindrome is a string that reads the same forwards and back...
Approach
- Character Count: First, we need to create a character count of the palindrome pattern. For example, if our pattern is 'abba', we would count: {'a': 2, 'b': 2}.
- Sliding Window: Next, we w...
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