Count cycle in linked list

Last updated: December 4, 2025

Quick Overview

Count the number of maximum path in the given matrix.

Spotify
Coding & Algorithms
Software Engineer
Spotify
December 4, 2025
Software Engineer
Technical Screen
Coding & Algorithms
Easy

32

9

1,899 solved


Count the number of maximum path in the given matrix.

Spotify 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
Graph algorithms and traversal
Hash maps and frequency counting
Edge cases and input validation
Binary search and divide and conquer
How to Approach This
  1. Clarify input constraints and edge cases before writing code.
  2. Walk through your approach verbally and confirm with the interviewer before coding.
  3. Start with a brute force solution, then optimize. Mention time and space complexity.
  4. Test your solution with examples, including edge cases like empty input or duplicates.
  5. Consider common patterns: sliding window, two pointers, hash map, BFS/DFS, dynamic programming.
Possible Follow-up Questions
  • Can you solve this in a single pass?
  • How would you test this solution thoroughly?
  • What happens if the input contains duplicates?
  • What is the worst-case input for your solution?
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