The whole process took 3 months, just for them to reject me in the end. The technical questions ranged from LeetCode Easy to Medium.

I got stumped on a bucketsort question and didn't provide the optimal solution. Once you solve a question, they will keep adding miniproblems until you can't solve anymore. Standard practices, in my opinion. The interviewers were helpful and happy to share information on what it's like to work for the company.

Find the kth most frequent user of a social media site using dynamic programming (DP) and a sliding window.