First, I received an email asking me to complete a short survey and a coding sample online.

The coding sample included two questions and had to be finished in 60 minutes.

After that, I received a phone call from HR explaining the following steps of the screening process.

The coding interview took place two weeks later, with two questions in 45 minutes.

I am still waiting for the results.

Print all combinations of an n-digit lock, given the possible numbers for each digit.