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traba
USA
December 29, 202513 reads

Summary

I had a phone screen interview with Traba where I was asked to implement a cache with specific eviction policies and discuss time complexity improvements. I presented my approach and am hopeful for a positive outcome.

Full Experience

Not too bad of an interview problem! The best part was that the interviewer does not expect working code. In fact, for my approach, I was allowed to stub out some of the functions but I talked through the mechanics.

Fingers crossed for a pass

Interview Questions (1)

Q1
Implement Cache with Priority and LRU Eviction Policy
Data Structures & Algorithms

Your job is to implement a cache as per the below requirements:

  • get(key: string)
  • set(key: string, value: string, priority: int)
  • evictCache

Eviction policy:

  • Remove the key/value pair with the highest priority number
  • If there is a tie, remove the least recently accessed key/value pair

Followup: Any opportunity to improve the time complexity of evictCache. I had a linear time complexity and needed to discuss how to improve it

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