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 2Medium 15Hard 4
Filters · onDifficulty, topic, company

15 questions

  1. 1Merge IntervalsMediumCoding· Blinkit, Docquity Holdings(PBS)
  2. 2Group anagramsMediumCoding· Blinkit, MakeMyTrip
  3. 3Minimize Maximum Component CostMediumCoding· Salesforce
  4. 4Course ScheduleMediumCoding· Zoho
  5. 5Validate IP AddressMediumCoding· Salesforce
  6. 6Explain the differences between an interface and an abstract class.MediumCodingTechnical· Goldman Sachs, Microsoft
  7. 7Given n houses in a line with money in each, find the maximum amount a robber can steal, without stealing from two adjacent houses.MediumCoding· Adobe, Apple
  8. 8Find the longest substring without repeating characters.MediumCoding· Apple, Intuit
  9. 9Find the maximum subarray sum.MediumCoding· Adobe, Apple
  10. 10Given stock prices for the next n days, how can you maximize your profit by buying or selling one share per day?MediumCoding· Adobe, Apple
  11. 11Given 2 strings, return the longest common substring.MediumCoding· Salesforce
  12. 12Given an nxn grid of 1s and 0s, return the number of islands in the input.MediumCoding· Adobe, Amazon
  13. 13Determine if a number is a power of two.MediumCoding· Salesforce
  14. 14Write a function to return all prime numbers up to a given number n.MediumCoding· Adobe, Apple
  15. 15What are the different types of software testing?MediumCodingTechnical· Salesforce