Microsoft Developer interview questions

Applied through a campus recruiting system and a referral. Had a short interview on campus. Moved on to an on site in my city that was 1 day. I had four interviews, where the questions were all leetcode easy and medium, or a famous hard. Interviewers typed on their laptop to write notes while I was whiteboarding, and whilst they did pre-emptively say that they weren't intentionally being rude, many typed so much that it gave me a bad vibe.

Online test consisted of three questions to be solved in 1.5 hours. Trim a BST, pattern matching and non repeating character. 68 students were shortlisted out of 250 and there was another test conducted on paper. We were asked to solve 2 DP problems: number of deletions required in an array to make it sorted in increasing order and word break problem. There was a group discussion round after this where we were given a problem and we had to come up with plausible approaches to solve the problem as a part of the discussion. After this round there were 3 rounds of technical interviews and 1 HR interview.