Perplexity loop prep

OfficialPerplexityby Frontier Interview

The loop in order: the coding screen, coding, system design, AI system design, then the project deep dive and hiring manager.

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  1. In-memory file system with files and folders
    CodingReference answer: Frontier Interview's solution
  2. Agent to-do list with task dependencies
    CodingReference answer: Frontier Interview's solution
  3. Truncate model output at the first stop sequence
    CodingReference answer: Frontier Interview's solution
  4. Temporal key-value store with point-in-time reads and restore
    CodingReference answer: Frontier Interview's solution
  5. Greedy and beam search decoding for a language model
    CodingReference answer: Frontier Interview's solution
  6. GPU credit ledger with out-of-order events
    CodingReference answer: Frontier Interview's solution
  7. Apply ordered token merges to a string
    CodingReference answer: Frontier Interview's solution
  8. Design typeahead suggestions
    System designReference answer: Frontier Interview's solution
  9. Design a top-K popular items system
    System designReference answer: Frontier Interview's solution
  10. Design an answer engine with citations
    AI systemReference answer: Frontier Interview's solution
  11. Design a RAG system over company docs
    AI systemReference answer: Frontier Interview's solution
  12. Design a feed recommendation system
    ML designReference answer: Frontier Interview's solution
  13. Project deep dive: present a project you led
    BehavioralReference answer: Frontier Interview's solution
  14. Build your story bank
    BehavioralReference answer: Frontier Interview's solution