At first they asked a little about me, and pretty quickly we moved on to presenting a project I had done.
I started presenting a project in Java, with a class diagram, and already in the first diagram I had they asked me about an algorithm I presented there.
They asked me to go into the actual code, and asked me how I would implement the algorithm better.
After we got to how it should be, they told me to start implementing it in code and write what was needed.
After a while we moved on to the leetcode question.