Sliding Window on interval list

Last updated: April 10, 2026

Quick Overview

Apply the Greedy algorithm on a linked list to solve this optimization problem.

Stripe
Coding & Algorithms
Software Engineer
Stripe
April 10, 2026
Software Engineer
Phone Screen
Coding & Algorithms
Medium

16

11

2,321 solved


Apply the Greedy algorithm on a linked list to solve this optimization problem.

Coding interviews at Stripe 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
Edge cases and input validation
Time and space complexity analysis
Data structure selection and trade-offs
Tree structures and recursion
Common algorithm patterns (sliding window, two pointers, BFS/DFS)
Dynamic programming and memoization
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
  • What happens if the input contains duplicates?
  • What is the worst-case input for your solution?
  • How would you test this solution thoroughly?
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