Uber Software Engineer Internship interview questions

It was a 1-hour interview where I was given a tree to traverse and create a descending list out of it, since it was a binary search tree it was easy. It took me some time to figure out the time complexities and how we can optimize it which is what I think was the factor of my rejection.

The interview process consisted of 2 technical interviews both consisting of leetcode. After finishing the interview I had time to ask any questions I had about the company. That's all.