Question bank

4,310 interview questions, answered.

Reference answers, what the interviewer is really testing, how it is graded, and the follow-ups that come next.

Easy 190Medium 2,498Hard 982
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4,310 questions

  1. 3265If you could float on water, like a boat, what would you be and why?EasyBehavioral· Google
  2. 3266Given two strings of equal length, determine if it's possible to form a palindrome by cutting them in half.EasyCoding· Google
  3. 3267Coding pairing: cache / tokenizer / reservation serviceMediumAI ML
  4. 3268In-memory database with basic SQLMediumAI ML
  5. 3269LRU cache — classic but dangerousMediumAI ML
  6. 3270Most important OpenAI ship of the past yearMediumAI ML
  7. 3271Reservation service under contentionMediumAI ML
  8. 3272Streaming tokenization bottleneckMediumAI ML
  9. 3273The mission-contradiction testHardAI ML
  10. 3274Thread-safe cache with configurable evictionMediumAI ML
  11. 3275Walk me through your favorite paperMediumAI ML
  12. 3276Webhook delivery system (the paid work trial)MediumAI ML
  13. 3277Word search on grid (Trie + DFS)MediumAI ML
  14. 3278Implement a function to justify a list of words within a given width.MediumCoding· Google, Microsoft
  15. 3279What does the Signup endpoint on Facebook do?EasyTechnical· Meta
  16. 3280What is the future of microwaves?MediumProduct· Google
  17. 3281What do you see as the future of online commerce in 10 years?MediumProduct· Stripe
  18. 3282Given a feature data record (FDR), how would you detect anomalies in it?MediumData· Airbus
  19. 3283What do you think the global booking cancellation rate is at Booking.com, and why?MediumDataBehavioral· Booking.com
  20. 3284How many messages does Gmail receive per second?MediumProduct· Google
  21. 3285What is the goal of Microsoft Xbox?MediumDataTechnical· Meta
  22. 3286What goals cannot be measured by KPIs?MediumBehavioral· Stripe
  23. 3287As the CEO of Google, should the company continue, slow down, maintain, or ramp up investments in the Pixel handset line?HardBehavioralProduct· Google
  24. 3288Would it be beneficial for Google to charge Gmail users?Medium· Google