Overall, it was a great interview process: very quick and the tech recruiter was very responsive.

The process began with a talk with a tech recruiter, then moved on to a 1-on-1 online interview which lasted around 45 minutes.

One to two weeks later, I progressed to an on-site interview, which took about 2 hours. I met with two different lead developers for whiteboarding, and they asked fairly difficult questions.

I received my offer one to two days after the on-site interview.

Coin exchange:

Given the amount of change you must return and a list of denominations, give the least amount of coins needed to be given for change.