Oracle Software Engineer(Internship) interview questions

I submitted my resume and was matched with a recruiter, who had me fill out a questionnaire about the areas I believed I was most skilled in. After that, I was matched with a team and interviewed by one of its members. The interview itself was pretty challenging. It started with some easy questions but quickly moved on to very difficult concepts, some of which the interviewer mentioned are still ongoing problems in the tech industry. After the round of technical questions, there was a standard LeetCode-style whiteboard problem. It ended up being a medium-level question, but the hardest part by far was the technical questioning.

Hackerrank test, HR interview then a technical interview where the interviewer starts with technical questions (depending on the language chosen when applying), then gives a problem to solve where you have to explain while thinking/coding. The interviewer is helpful which makes the interview less stressing.