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
Filters · onDifficulty, topic, company

97 questions

  1. 25Why is it important for users to complete their LinkedIn profile? Discuss both user and enterprise perspectives.MediumProduct· LinkedIn
  2. 26How would you improve LinkedIn Messaging?Medium· LinkedIn
  3. 27How would you improve Rover?MediumProduct· LinkedIn
  4. 28How would you improve Spotify?HardProduct· DoorDash, LinkedIn
  5. 29Find the k-th smallest and k-th largest element in a binary search tree (BST).MediumCodingTechnical· LinkedIn
  6. 30How would you launch LinkedIn Learning in a new country?MediumProduct· LinkedIn
  7. 31PermutationsMediumCoding· Adobe, Apple
  8. 32Should LinkedIn acquire Discord? Why or why not?MediumProduct· LinkedIn
  9. 33Installs on LinkedIn's iOS app are down, what do you do?Medium· LinkedIn
  10. 34If LinkedIn messages are down, how would you identify the cause?MediumDataProduct· LinkedIn
  11. 35What could be the drivers for LinkedIn's performance in different markets?MediumDataTechnical· LinkedIn
  12. 36Find the longest palindromic subsequence using dynamic programming.MediumCoding· Adobe, Apple
  13. 37Find the lowest common ancestor (LCA) of two nodes in a binary tree.MediumCoding· Apple, LinkedIn
  14. 38Implement LRU Cache.HardCoding· Accenture, Adobe
  15. 39Find the maximum subarray sum.MediumCoding· Adobe, Apple
  16. 40Measure the success of a mousetrap. How would you tell that our mousetrap is superior to the existing product?MediumData· LinkedIn
  17. 41How would you measure success for LinkedIn events?MediumData· LinkedIn
  18. 42Merge k sorted linked lists.HardCoding· Adobe, Apple
  19. 43Choose one LinkedIn product you want to work on and describe how you would improve it.HardProduct· LinkedIn
  20. 44Partition an array into two sub-arrays with equal sum.MediumCoding· Apple, LinkedIn
  21. 45How do you prioritize features for your engineering team?MediumBehavioral· eBay, LinkedIn
  22. 46Sort an array containing only 0s, 1s, and 2s.MediumCodingTechnical· LinkedIn
  23. 47Tell me about yourself.MediumBehavioral· Accenture, ADP
  24. 48As a TPM, how would you handle a project with unchanged deliverables but a cut in the time period by half?MediumDataProduct· LinkedIn