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One-on-one coding interview with a Facebook engineer, focusing on basic data structures and algorithms questions. The next round is an onsite interview with research-oriented questions, placing more emphasis on ML topics and ML algorithms.

The recruiter gave a lot of detail, which was very helpful. I was cut in the first round. It's not clear why, because I answered the question correctly. It was odd and left a bad taste in my mouth.

A coding round was held, and the question related to trees. The task involved storing data in nodes and accessing it sequentially. Although the interviewer expected a familiarity with this coding pattern, the question itself was not entirely clear. T