Oracle onsite interview

The Oracle onsite interview consisted of four technical interviews. The team focused on database security, so questions related to cryptography were asked, such as the differences between asymmetric and symmetric cryptography, digital certificates, TLS handshake, message authentication codes versus digital signatures, and the role of a certificate authority. I was also asked to describe projects that I mentioned on my resume. A coding question was asked: Given an array of integers (with possible repetitions) and an integer, delete all repetitions of that integer in the array and shift left the remaining elements. Return the final size of the array.