Business Technology Analyst

Write query for selecting top 10 rows of an employee table?

Then he asked which topics I am comfortable with. I answered DBMS and OS. 

So he asked me few questions from DBMS
1. What are different types of DBMS ? (Learn)
2. What is the difference between DBMS and RDBMS?  (Learn)
3. What is denormalization in DBMS?
4. What is stored procedure along with syntax?

Then he got into OOPS as the company is mainly focused on Java
1. Explain concepts of OOPs with real life examples. (Learn)
2. What is abstract class , explain with a program?
3. What is constructor destructor? 

You are given an array 'ARR' of N integers. Each integer represents the height of a balloon. So, there are N balloons lined up.

Your aim is to destroy all these balloons. Now, a balloon can only be destroyed if the player shoots its head. So, to do the needful, he/ she shoots an arrow from the left to the right side of the platform, from an arbitrary height he/she chooses. The arrow moves from left to right, at a chosen height ARR[i] until it finds a balloon. The moment when an arrow touches a balloon, the balloon gets destroyed and disappears and the arrow continues its way from left to right at a height decreased by 1. Therefore, if the arrow was moving at height ARR[i], after destroying the balloon it travels at height ARR[i]-1. The player wins this game if he destroys all the balloons in minimum arrows.

You have to return the minimum arrows required to complete the task.

1.why should we hire you?
2. what additional you came to know about the company through pre placement talk?
3. What are your hobbies?