Virtual Onsite 2:-

class Employee{
	String name;
	String dept;
	List<Employee> reports;
}
public int getMinTimeToSendMessageToAllEmployees(List<Employee> employees){
}

I needed to complete this function where we dont know who is CEO/BOSS (root) among the list of emplyees. I got the approach, interviewer was also satisfied but I was not able to come up with the working code in time.
Can someone please post the solution
My approach:-

1. Create a graph with the help of list of employees
2. Find out the ceo/boss with the help of indegrees
3. traverse the graph using BFS and capture the levels
   4.return the level at which we were able to traverse all the employees.