Oracle Senior Software Engineer interview questions

4 interviews, 3 with simple coding task, sometimes something mathematical, do not be silent, talk about what you are doing and what pros and cons your solution has in comparison with other solutions for this coding challenge

I had total 4 rounds, 3 DSA and problem solving and 1 system design. Questions were Leetcode medium level. Once all rounds were over I didn't hear anything from the recuriter or the corrdinator. No communication regarding rejection or selection.