MSFT | Seattle | 2020 Sep | Offer accepted.
initial screen : Merge sort. Invited to next round.

1. Find common ancestor node given a binary tree
   problem 236
2. Sort colors - problem 75
3. Reverse only letters - problem 917
4. Design a notifier
   EmailNotifier, AlertNotifier, ... ,
   How would your clients use the Notifier pattern?
   Difference between observer and notifier.
   More discussions.
5. General behavioral type questions
   • how would you handle,
     difficult team member, situation of conflict, etc