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.
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18 questions
- 1LRU CacheMediumCoding·
Adobe, Amazon - 2Longest Increasing SubsequenceMediumCodingAI ML·
Atlassian, Meta - 3Product of Array Except SelfMediumCoding·
PayPal, Target - 4Valid SudokuMediumCoding·
PayPal - 5Given a castle with rooms named after flowers where each room has an instruction to the next room, write an algorithm to find the rooms containing treasure.MediumCoding·
PayPal - 6How does PayPal generate its revenue?MediumProduct·
PayPal - 7What are the key metrics you track for the product you currently manage?MediumDataProduct·
Adobe, PayPal - 8Find the longest substring without repeating characters.MediumCoding·
Apple, Intuit - 9Tell me about a time when you received negative feedback and how you handled it.MediumBehavioral·
Amazon, American Express - 10Squares of sorted arrayMediumCoding·
Meta, PayPal - 11You're a PM for Uber Eats. Cart conversation has dropped by 10% in the last 3 months. How would you find the root cause?MediumDataProduct·
PayPal - 12Tell me about a user need that is not being met by the market. How would you validate a solution for it?MediumBehavioralProduct·
PayPal - 13Why did PayPal acquire Honey?Medium·
PayPal - 14Given stock prices for the next n days, how can you maximize your profit by buying or selling one share per day?MediumCoding·
Adobe, Apple - 15How would you improve Venmo? What features would you build and why?MediumProduct·
PayPal - 16Given an nxn grid of 1s and 0s, return the number of islands in the input.MediumCoding·
Adobe, Amazon - 17Why might Venmo be seeing a decrease in users adding their bank accounts?MediumDataProduct·
PayPal - 18Why work at PayPal?MediumBehavioral·
PayPal