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This question evaluates proficiency in array and matrix manipulation, including spiral traversal with boundary and edge-case handling, index management, hash-based complement lookup for pair-sum, and reasoning about time and space complexity.

  • medium
  • Illumio
  • Coding & Algorithms
  • Software Engineer

Solve Matrix Traversal and Pair Sum

Company: Illumio

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: medium

Interview Round: Onsite

Quick Answer: This question evaluates proficiency in array and matrix manipulation, including spiral traversal with boundary and edge-case handling, index management, hash-based complement lookup for pair-sum, and reasoning about time and space complexity.

Last updated: Jun 13, 2026

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