Microsoft Senior Software Developer Engineer interview questions

One day interview with four stages for API interface design, OOP, System Design and Level Adjustment (like system design in general). After finishing it I was asked for one more round. I was given one LeetCode medium task for it

I unfortunately had a very poor interview experience. They took a full month to respond to my application and to give me a phone interview. The email that they sent me had my name misspelled, which really showed the lack of care they put towards their candidates. The interview started well, as the interviewer was very friendly, but it all went downhill when the coding portion began. The interviewer kept on micromanaging me while I was coding, and would cut me off only a few lines into coding to discuss minor stylistic changes to my code. They also had a hard time understanding my code because it didn't seem to match exactly the answer they had written down. Overall, very poor experience interviewing.