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4,310 interview questions, answered.

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

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164 questions

  1. 49Wiggle SortCoding· Amazon
  2. 50Word ladder IICoding· Amazon, Cisco
  3. 512 DSA questionsCoding· Amazon
  4. 52Apply Operations to an ArrayEasyCoding· Amazon
  5. 53Balanced ArrayCoding· Amazon
  6. 54Based on ArrayCoding· Amazon
  7. 55Based on GraphCoding· Amazon
  8. 56Basic Tree OperationsCoding· Amazon
  9. 57Binary Search Tree to Greater Sum TreeMediumCoding· Amazon
  10. 58Binary Tree Shortest PathCoding· Amazon
  11. 59Bottom View of Binary TreeCoding· Amazon
  12. 60Closest DivisorsMediumCoding· Amazon
  13. 61Closest Nodes Queries in a Binary Search TreeMediumCoding· Amazon
  14. 62Compare two product titles and generate a comprehensive list of required changes for catalog synchronizationCoding· Amazon
  15. 63Count Beautiful Splits in an ArrayMediumCoding· Amazon
  16. 64Count the Number of K Big IndicesCoding· Amazon
  17. 65Cousins in Binary Tree IIMediumCoding· Amazon
  18. 66Daily TemperaturesMediumCoding· Amazon, BitGo
  19. 67Decode Ways iiCoding· Amazon
  20. 68Delete Node in a Linked List O(1)Coding· Amazon
  21. 69Design a scalable stock trading platform that can handle heavy traffic without system downtimeCoding· Amazon
  22. 70Design In-Memory File SystemHardCoding· Amazon
  23. 71Designing in-Memory file systemCoding· Amazon
  24. 72Diameter of N-ary TreeCoding· Amazon