Find kth largest element in interval list

Last updated: August 30, 2025

Quick Overview

Given a linked list, find the connected components efficiently using Greedy.

Palo Alto Networks
Coding & Algorithms
Software Engineer
Palo Alto Networks
August 30, 2025
Software Engineer
Technical Screen
Coding & Algorithms
Medium

71

14

2,336 solved


Given a linked list, find the connected components efficiently using Greedy.

This coding problem is frequently asked during Technical Screen at Palo Alto Networks. The interviewer is testing your ability to translate a problem into clean, working code while discussing time and space complexity. Palo Alto Networks 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
Edge cases and input validation
Graph algorithms and traversal
Tree structures and recursion
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 is the worst-case input for your solution?
  • How would your solution change if the input was sorted?
  • Can you optimize the space complexity of your solution?
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