Sort and Rearrange: Efficient Algorithms for Diverse Challenges
Company: Experian
Role: Data Scientist
Category: Coding & Algorithms
Difficulty: Medium
Interview Round: Technical Screen
##### Scenario
Coding rounds and infrastructure-style algorithm questions.
##### Question
Write an efficient algorithm to return the length of the longest increasing subsequence in an integer array. Design a function that rearranges a classroom so no adjacent students share the same team. How would you sort 50 numbers in a file, and how would your approach change for one million numbers?
##### Hints
Discuss O(n log n) solutions, dynamic programming with binary search, and external/parallel sorting for large files.
Quick Answer: This question evaluates understanding of algorithmic efficiency, sequence manipulation, and scalable sorting strategies, examining competencies in sequence algorithms, rearrangement constraints, data structures, and large-scale external or parallel processing.