I applied online. One of the recruiters contacted me via email.

For an internship, I had two phone interviews.

The recruiter sent a long email detailing how to prepare, what to expect, and some other information.

I was asked to solve a question during my phone interview, which I solved correctly. However, I didn't communicate with the recruiter as well as I could have, as this was my first time having this type of interview. I was a little tense.

If a=1, b=2, ..., z=26. Given a string, find the number of possible codes that string can generate.

Example: 1123; output: 5. Explanation: aabc, kbc, alc, aaw, kw