Expedia Group interview questions

Received coding challenge on the popular coding challenge website that is used by many companies. The coding challenge was actually very hard. I was surprised by it. However, I was pleased by the fact that I did not have to handle input and output like I had to do for other coding challenges. The second question was Leetcode hard, based on recursion, backtracking, or DP. Recursion doesn't work as the inputs are too large, which I only figured after testing it with 5 minutes left.

The interview process takes a long time, however, they are extremely helpful. My fist interview was face-to-face, because they visited the campus (I had the interview in Amsterdam)! The interview takes on average 30 to 45 minutes, and there are many technical questions, but also personality-based ones. Moreover, they provided feedback after the first stage of the interview, which I had with the HR manager and Area Manage. Overall, very pleasant experience! The questions were mostly ok, however, there are some tricky ones. I have also heard that some of my colleagues were asked math questions, but I did not have too many.