Infosys Specialist Programmer L2 interview questions

1. Write a program to display the bottom view of a binary tree 2.It's time and space complexity 3.You have a Table with columns (Ticket_id,Emp1,Emp2,Solved_by) from this you have to generate a result that will have all the employees from both Emp1 and Emp2 columns and the no of tickets assigned and the number of tickets solved by them. 4.What is the difference between c++ and java ? 5.What is diamond inheritance problem ?