Vrbo Software Engineering interview questions

1st HR phone screen: every easy, most of the questions are very common, asked about school's projects, work experience etc. 2nd Technical phone screen: most of them are fairly easy 1. What is the difference between an array and a vector 2. What is the difference between a class and a object 3. Given an array of integers, find the max int 4. Remove duplications from an array of int 5. Design a Unix file system with OOP (I failed this question, should have prepared better) 6. What does 'grep' command in linux do? 7. What does 2^16 equal? Got the rejection email the next day, obviously they believed I was not good at OOP so they did not bother to call me to the next round. Make sure to polish your OOP concepts and applications. Best of luck fellas!

It was quite straightfoward. After breif introduction, I was asked to design a way to efficienty to fetch the email address from a person's name given that they have thoudands of email-name pairs. I was asked to written code on the paper. And the follow up question is that how would you do to add new email-name pair into your design.