The internship I was applying for was in Santa Clara, CA. It involved a round of three phone interviews.

The first interview consisted of general technical questions, some brain teasers, and some behavioral questions.

The second interview was a coding interview with only one question to solve. You had to code it in C, and you couldn't use any other language (which made sense because they do mostly low-level stuff).

The third interview was also a coding interview with a couple of questions. The same restriction about the language applied.

Implement the "grep" command. You only have to consider the asterisk wildcard "*".

Merge two sorted arrays in O(n) time and O(1) space.