Similar to other recent interviews described here, I first had a call with the recruiter, followed by a tech screen, and then they set up a virtual onsite with 3 sessions.

The tech screen consisted of 3 parts, all of which were extremely easy. It involved implementing logic for a match 3 block puzzle game. They didn't care about runtime complexity, and I finished all 3 parts with time to spare.

The next session, the engineers feigned technical difficulty on their side, so that it was necessary to reschedule. Presumably this was because they'd already chosen another candidate but didn't want to say so. This was reinforced by the extremely unstructured behavioral interview I had a short time later. I don't recall them asking a single question about my work experience. The next morning, an hour before my 3rd virtual onsite session was scheduled to take place, the recruiter canceled the rest via email.

Given a matrix filled with integers from 0 to 9, replace any vertical or horizontal groupings of 3 or more of the same digit with 0's.