Vir Softech Software Developer Interview Questions and Answers

Good questions for interview questions and

The interviewer asked me to introduce myself and explain my projects
Then he asked me to explain and design tables and how data is flowing into the tables in my project.
OOPS, properties and Interface.
Then he asks me to explain Restful APIs and tell me the difference between PUT

Basic aptitude and computer science(OS, programming) related questions.

Q1. String / Array Manipulations
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Q2. Searching / Sorting Algo
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Q3. What are the basics of web development?
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Q1. What was the role in previous company and projects?
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Q2. How would you describe your ability to work as a team player?
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Round duration - 90 Minutes
Round difficulty - Medium

It was an online coding round. In this round, there are 2 problems, were given to me. 
They gave the test link through the mail and I have to open the test link till 12 PM.
The environment of Hackerrank was very friendly.
I am able to solve both of the problems.

Q1. 
Find Missing Number In String Problem Statement
You have a sequence of consecutive nonnegative integers. By appending all integers end-to-end, you formed a string S without any separators. During this pro...read more
Ans. Brute Force
• The idea is to try all lengths from 1 to 6 for the first number of the sequence.
• For each length, we check if the current length satisfies the property of all consecutive numbers except one missing number.
• For each length ‘k’ where 1 <= k <= 6 we take the first ‘k’ characters of the string and assume it to be our first number of the consecutive sequence.
• Now if the first number is ‘x’ then we want our nex...read more
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Q2. 
Maximum Size Rectangle Sub-matrix with All 1's Problem Statement
You are provided with an N * M sized binary matrix 'MAT' where 'N' denotes the number of rows and 'M' denotes the number of columns. Your t...read more
Ans. Dynamic Programming.
1. We start from the first row and move downwards.
2. We create three 1-dimensional arrays HEIGHT[], LEFT[], RIGHT[].
3. ‘HEIGHT’[i]: stores the number of current continuous 1’s in column i.
4. LEFT[i] : stores the leftmost index ‘j’ such that all indices say ‘K’, ‘K’ belongs to [j, i], ‘HEIGHT’[k] >= ‘HEIGHT’[i].
5. RIGHT [i]: stores the rightmost index ‘j’ such that all indices say ‘K’, ‘K’ belongs to [i, j], ‘HE...read more
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Round duration - 60 minutes
Round difficulty - Medium

The timing of this round is 10:30 AM to 11:30 AM.
First, the interviewer asked me to introduce myself and the interviewer was very friendly.