System Engineer

An exam was conducted and the following was analyzed. 4 men were able to check some exam papers in 8 days working 5 hours regularly. What is the total number of hours taken by 2 men in 20 days to check double the number of exam papers?

Answer: 8 hours

Solution:
Assuming that 1 unit of work is done in 1 hour Let’s calculate the total number of working hours: => 4 * 8 * 5 = 160 units Now the work is doubled: => 160 * 2 = 320 units Let ‘x’ be the number of hours taken by 2 men to complete the work in 20 days. Therefore, => 2 * 20 * x = 320 => x = 8 hours (Answer).

If the alphabets are written in the sequence of a, bb, ccc, dddd, eeeee, ffffff, …. What will be the 120th letter?

Answer: O

Solution:

It can be seen that the letter are in AP sequence, So applying the formula we get, n(n+1)/2 <= 120 We find that n = 15 fits the equation The 15th letter in the English alphabet = O So 15th term contains O.

Given an array ‘arr’ of size ‘n’ find the largest element in the array.

Example:

Input: 'n' = 5, 'arr' = [1, 2, 3, 4, 5]

Output: 5

Explanation: From the array {1, 2, 3, 4, 5}, the largest element is 5.

You are given an array of integers 'ARR' containing N elements. Each integer is in the range [1, N-1], with exactly one element repeated in the array.

Your task is to find the duplicate element. The duplicate element may be repeated more than twice in the error, but there will be exactly one element that is repeated in the array.

Note :

All the integers in the array appear only once except for precisely one integer which appears two or more times.

What is a Class in java , example with a real world example?

Class:A class is a user-defined data type. It consists of data members and member functions, which can be accessed and used by creating an instance of that class. It represents the set of properties or methods that are common to all objects of one type. 

A class is like a blueprint for an object.For Example: Consider the Class of Cars. There may be many cars with different names and brands but all of them will share some common properties like all of them will have 4 wheels, Speed Limit, Mileage range, etc. 

So here, Car is the class, and wheels, speed limits, mileage are their properties.

What is an Object explain with a real world example?

It is a basic unit of Object-Oriented Programming and represents the real-life entities. An Object is an instance of a Class. When a class is defined, no memory is allocated but when it is instantiated (i.e. an object is created) memory is allocated. An object has an identity, state, and behavior. Each object contains data and code to manipulate the data. Objects can interact without having to know details of each other’s data or code, it is sufficient to know the type of message accepted and type of response returned by the objects. For example “Dog” is a real-life Object, which has some characteristics like color, Breed, Bark, Sleep, and Eats.

Name each of the OOPs concept and explain them with real world example?

Ans: 

1. Data Abstraction: Data abstraction is one of the most essential and important features of object-oriented programming. Data abstraction refers to providing only essential information about the data to the outside world, hiding the background details or implementation. Consider a real-life example of a man driving a car. The man only knows that pressing the accelerators will increase the speed of the car or applying brakes will stop the car, but he does not know about how on pressing the accelerator the speed is increasing, he does not know about the inner mechanism of the car or the implementation of the accelerator, brakes, etc in the car. This is what abstraction is.

2. Encapsulation: Encapsulation is defined as the wrapping up of data under a single unit. It is the mechanism that binds together code and the data it manipulates. In Encapsulation, the variables or data of a class are hidden from any other class and can be accessed only through any member function of their class in which they are declared. As in encapsulation, the data in a class is hidden from other classes, so it is also known as data-hiding.Encapsulation in Object Oriented ProgrammingConsider a real-life example of encapsulation, in a company, there are different sections like the accounts section, finance section, sales section, etc. The finance section handles all the financial transactions and keeps records of all the data related to finance. Similarly, the sales section handles all the sales-related activities and keeps records of all the sales. Now there may arise a situation when for some reason an official from the finance section needs all the data about sales in a particular month. In this case, he is not allowed to directly access the data of the sales section. He will first have to contact some other officer in the sales section and then request him to give the particular data. This is what encapsulation is. Here the data of the sales section and the employees that can manipulate them are wrapped under a single name “sales section”

.3. Inheritance: Inheritance is an important pillar of OOP(Object-Oriented Programming). The capability of a class to derive properties and characteristics from another class is called Inheritance. When we write a class, we inherit properties from other classes. So when we create a class, we do not need to write all the properties and functions again and again, as these can be inherited from another class that possesses it. Inheritance allows the user to reuse the code whenever possible and reduce its redundancy.

4. Polymorphism: The word polymorphism means having many forms. In simple words, we can define polymorphism as the ability of a message to be displayed in more than one form. For example, A person at the same time can have different characteristics. Like a man at the same time is a father, a husband, an employee. So the same person posses different behavior in different situations. This is called polymorphism.

Tell me about yourself?

This is the most famous question for an interviewer and also most difficult to answer this question for the candidate. This question puts all the pressure on the candidate, and the interviewer relax.

You should alert enough to answer this question. You should start with an easy and confident tone and answer in a proper manner. It should not be scripted. Always remember, you are not giving the interview to a robot so your articulation, your pronunciation of each word should be clear and confident.

A good way:

Analyze your interviewer interests.

Express your most important accomplishments first.

Possible Answer 1

"Good morning/afternoon/evening" sir/mam.

First of all, thank you for giving me this opportunity to introduce myself.

My name is Ajeet Kumar.
As far as my education qualification is concerned, I have done MBA with finance stream from Srivenkateswara university in Emerald's P. G. College, Tirupathi, in the year of 2014.

I had completed B.tech from N.I.T Jaipur in 2012.

I had completed my schooling from G.I.C. Allahabad.

As far as concerned my family, I belong to a middle-class family. My father is a Businessman, and my Mother is a homemaker. My brother is preparing for civil services.

I am good in programming languages C, C++, and Java and very much interested in HTML, CSS, ASP. Net and SQL.

My strength is self-confidence, positive attitude, hard work.

My weakness is: I can easily believe every one.

My hobbies are: Watching news channels, Playing volleyball, Listening to music.

Possible Answer 2

"Good morning/afternoon/evening" sir/mam, it's my pleasure to introduce myself. I am Anshika Bansal. I belong to Meerut. I have done my B.Tech in CSE from Lovely Professional University.

While coming to my family members, there are 4 members including me. My father is a doctor, and any mother is a teacher. My younger sister will appear her 12th CBSE board exam this year.

Now coming to me, I am sweet smart, confident, and hardworking person. I am a cool hearted person, so usually see every difficulty with a positive side and keep myself always smiling which makes me stronger even more.

I can carry out any task assigned to me without hesitation.

My hobbies are dancing, Internet surfing, playing Chess, listening to music, watching the news channel. In my spare time, I like to read news on my phone and traveling to my hometown.

Thank you for giving this opportunity to introduce myself.

Possible Answer 3

"Good morning/afternoon/evening" sir/mam, it's my pleasure to introduce myself. I am Anshika Bansal. I belong to Meerut. I have done my B.Tech in CSE from Lovely Professional University.

I am carrying 5 years of experience at top Wall Street Companies. In my recent company, I led the development of an award-winning new trading platform. I can survive in a fast-paced environment.

Now I am looking for a chance to apply my technical expertize and my creative problem-solving skills at an innovative software company like yours.

Who is the CEO of TCS?

The current CEO of TCS is Mr. K. krithivasan

What is the most difficult thing that you’ve ever accomplished? or What is the most difficult thing you have ever done?

Possible Answer #1:
“I have never been a great public speaker. The very thought of facing a crowd used to make me nervous.

When I started college, my best friend advised me that I had to get over this roadblock to shine through.

So, last year, I took the bold step of trying my hand at public speaking. I joined the Debate Club in my college.

Since then, I have participated in multiple contests.

Initially, I stammered, forgot my lines, dropped the microphone once due to my sweaty palms and even got booed at or scolded by the judges.

Yet, I kept on participating. Last month, for the very first time in a year, I won the third prize.

It was a great boost to my self-confidence.

I believe that it is my greatest feat so far, even bigger than my AIEEE rank.”

Possible Answer #2:
“I have helped my father set up his business from scratch. This is our family business and a startup as well.

The initial days were really very tough as I had to learn and apply everything at once.

Be it sales, marketing, leadership, management, finance, finance, human resources etc.

I became a jack of all trades overnight. It was really difficult to running and grow the business.

Nothing was so difficult or stressful as this one, midway I even slipped into depression and anxiety.

I even made up my mind to quit my job and focus entirely on my father’s dream, but thankfully the business took of due to our collective efforts.

Today, I am free to focus on my career once again, and do what I love the most.

The accomplishment bit here is that I feel whole and complete, as my family business is running smoothly and my career is undisturbed.”