Amazon - Systems Development Engineer

I interviewed for the Systems Development Role and got asked 3 Questions (2 DSA and 1 Behavioural) Q1. Given a list if meeting start and end time , find out the number of rooms required to hold all the meetings This question exactly - [https://cses.fi/problemset/task/1164] Q2. Given a n x n matrix of water, You are given a bunch of add commands with (x,y) co ordinates. After each command , an island is formed on that co-ordinate. Print a vector of numbers that denote the number of islands that exist after each insertion. Expected method: Disjoint union set Eg: Input: n=3 , [(0,0) , (1,1) , (2,2) , (1,2) , (0,1) ] Output: [1,2,3,2,1] Q3. Recall a time where you were in a team and there was conflict of ideas in the team , where your idea clashed with team's vision. How did you handle this and how did the team react?