Rofous Software Interview Questions and Answers for Freshers

It consisted two sections. One was GI and other was logical

Q1. Questions on what is there in the resume, Two puzzles: bucket problem and ant problem, Which is Object oriented language from C++ and Java, Difference between C++ and Java, Why you only chose java over C++...read more
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It was a 4 hour hacker rank with 2 Long questions

Q1. It was a technical interview with a senior software engineer. The Question was about partitioning a string into lowercase letters, uppercase letters and numbers
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Q1. Tell me abour yourself
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Q1. Payroll spexific questions
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Q1. General questions
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There main focus was on coding there were 10mcq of your coding s nd other section was for aptitude

Q1. They will start asking from your core branch... As you take any language name you found your expertise they will ask deeply on tht topic
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Q2. If you are from like electronic engineering student they will ask you questions from your related subject?!!
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Q1. Prepare well according to your experience
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Q1. Based on Job description
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Q1. Discussion about your capabilities as individual and group
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Q1. What are your salary expectations?
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Q2. What is your family background?
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Q3. Why are you looking for a change?
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Q4. Where do you see yourself in 5 years?
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Q5. What are your strengths and weaknesses?
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Q6. Tell me about yourself.
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Round duration - 150 minutes
Round difficulty - Hard

Oracle’s aptitude test is one of the longest aptitude tests I appeared for in my placement phase. It was around 2hrs 30mins long.
Questions were from basically every subject I had studied like OS, CN, SDLC, etc. Questions weren’t too hard but the difficult part about this test is that it was divided into sections and sub-sections.
Each sub-section had its own independent time interval so bringing it down to like 10 quant questions in 14 minutes might sound easy but it’s not. So managing time is the only difficult part of this round.

Q1. SQL Question
Which is the correct SQL query to select the top 5 numbers from the given data?
Ans. 
The correct SQL query to select the top 5 numbers from the given data is 'SELECT TOP 5 number FROM table_name ORDER BY number DESC'.
• Use the 'SELECT' statement to specify the columns you want to retrieve.

• Use the 'TOP' keyword followed by the number of rows you want to select.

• Specify the column name in the 'ORDER BY' clause to sort the data in descending order.
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Q2. Insertion in AVL Tree
Ninja has to implement an ‘AVL_TREE’ from scratch.
He is given ‘N’ values, representing the values of nodes to be inserted. Ninja has to insert these values into the ‘AVL_TREE’ and ...read more
Ans. 
The question asks to implement an AVL_TREE from scratch and insert given values into it.
• AVL_TREE is a self-balancing binary search tree

• The height difference between left and right subtrees of all nodes should not be more than one

• Implement the AVL_TREE data structure and insertion algorithm

• Return the root of the AVL_TREE after inserting all the nodes
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Round duration - 30 minutes
Round difficulty - Easy

The Technical Interview started off very fine and lasted for about 30-40 minutes. There were few HR questions in the beginning. The interviewer is very friendly. Firstly they asked me to tell them about myself. then the reasons for choosing this Profile. Then he asked me to explain the projects I have done. I have explained them. They have interrupted me and asked some doubts meanwhile. But I felt that they were intended just to check my confidence and how would I explain their doubts. They asked me some DSA Questions but I told them I am not much confident in DSA then they asked Basic Questions on DBMS like Explain about Normalization of DB, self Join, etc. And at the end, he asked me a general aptitude question based on Distance and time.

Overall the Interview was quite easy. Just learn the basics. Maintain good communication skills. Be confident and add good projects to your CV. Then it will be very easy to crack this round.

Q1. SQL Question
Asked me to write a query to select some data from large collection of it.
Ans. 
Write a query to select data from a large collection.
• Use the SELECT statement to specify the columns you want to retrieve.

• Use the FROM clause to specify the table or tables from which to retrieve the data.

• Use the WHERE clause to specify any conditions that the retrieved data must meet.

• Use the ORDER BY clause to sort the retrieved data in a specific order.

• Use the LIMIT clause to limit the number of rows returned, if nec
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Q2. Third greatest element
Given an array/list 'ARR' of ‘N’ distinct integers, you are supposed to find the third largest element in the given array 'ARR'.
Input Format :
The first line conta...read more
Ans. 
The task is to find the third largest element in an array of distinct integers.
• Read the number of test cases 'T'

• For each test case, read the number of elements 'N' and the array 'ARR'

• Sort the array in descending order

• Return the element at index 2 as the third largest element
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Round duration - 30 minutes
Round difficulty - Easy

In the first 10 min, He asked me general HR questions like why OFSS. What are your strengths etc?
Then he asked me a puzzle. Then he asked me some questions from my resume regarding my internship and extracuriculars.
Then he asked me questions related to banking like how banks earn money, is a loan asset or liability, is FD asset or liability for a bank, and as I knew all these financial concepts already so it was quite easy for me to crack this round. The interviewer was very friendly and then I asked him some questions regarding the job profile and he answered every question happily and it was visible on his face that he is happy with my interview.

Q1. Puzzle
Suppose there are N balls. out of which only 1 ball is lighter in weight. You are given a simple balance. Then How many minimum no. of attempts do one take to find out that lighter ball. and how many...read more
Ans. 
Tip 1 : Practise some puzzles.
Tip 2 : Be prepared for questions like why OFSS, Why this profile, Your strengths, your future plans etc.
Tip 3 : Try to be calm during every situation in an interview as it shows your confidence and it matters to company how you handle such situations.
Answered by CodingNinjas
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Round duration - 90 minutes
Round difficulty - Medium

Q1. Find All Subsets
You are given an array ‘arr’ of ‘N’ distinct integers. Your task is to find all the non-empty subsets of the array.
Note: You can return the subsets in any order, you don’t have to speci...read more
Ans. Power Set Using Bit-Masking
 
One of the standard and useful method of finding the power set is through bit-masking.
Consider a number with N-bits in its binary representation, if we consider that the state of i^th bit depicts whether the i^th array element is included in the current subset or not, then we can uniquely identify one of the subsets (as each number has a different binary representation).
Now we can simply ...read more
Answered by CodingNinjas
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Round duration - 60 Minutes
Round difficulty - Medium

The technical question was mainly based on my resume, followed by coding questions.

Q1. Technical Questions
When do you prefer to use Bokeh and when would you prefer Matplotlib?
Explain the machine learning project on your resume?
She gave a situation, and asked what would I implement Supervised...read more
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Round duration - 30 Minutes
Round difficulty - Easy

It was a coding round

Q1. Reverse Linked List
Given a singly linked list of integers. Your task is to return the head of the reversed linked list.
For example:
The given linked list is 1 -> 2 -> 3 -> 4-> NULL. Then th...read more
Ans. Brute Force
The brute force approach is to use recursion. First, we reach the end of the Linked List recursively and at last node, we return the last node, which becomes the new head of the partially reversed Linked List. While coming back from each recursion call we add the current node in the current recursion call to the last node of the partially reversed Linked List and assign the current node to null.
 
Steps:
&...read more
Answered by CodingNinjas
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Round duration - 20 Minutes
Round difficulty - Easy

Q1. Basic HR Questions
What are you hobbies?
What are your salary expectations?
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