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Vistaar Systems Interview Questions and Answers
Vistaar Systems Interview Experiences
1 interview found
I applied via Approached by Company and was interviewed before May 2022. There were 3 interview rounds.
Coding platform normally
(2 Questions)
- Q1. What is Polymorphism
- Q2. What is deadlock and how you prevent one?
- Ans.
Deadlock is a situation where two or more processes are unable to proceed because they are waiting for each other to release resources.
Prevent deadlock by using a proper resource allocation strategy
Avoid holding onto resources for too long
Use timeouts to release resources if they are not being used
Implement a deadlock detection and recovery mechanism
Avoid circular wait by enforcing a strict ordering of resource request...
Skills evaluated in this interview
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I applied via Naukri.com and was interviewed in Oct 2020. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Regarding PHP
Interview Preparation Tips
I appeared for an interview before Mar 2021.
Round duration - 30 minutes
Round difficulty - Medium
This was a MCQ round. 30 ques in 30 mins consisting of difficult quantitative aptitude questions were to be solved.
(2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
In this test round, 2 coding questions were given. Either write the code or pseudo code
- Q1.
N Queens Problem
Given an integer
N, find all possible placements ofNqueens on anN x Nchessboard such that no two queens threaten each other.Explanation:
A queen can attack another queen if they ar...
- Ans.
The N Queens Problem involves finding all possible placements of N queens on an N x N chessboard without threatening each other.
Use backtracking algorithm to explore all possible configurations.
Keep track of rows, columns, and diagonals to ensure queens do not threaten each other.
Generate all valid configurations and print them out.
- Q2.
Sort 0 1 2 Problem Statement
Given an integer array
arrof size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.Input:
The first line contains an integer 'T' representing the n... - Ans.
Sort an array of 0s, 1s, and 2s in linear time complexity.
Use three pointers to keep track of 0s, 1s, and 2s while traversing the array.
Swap elements based on the values encountered to sort the array in-place.
Time complexity should be O(N) and space complexity should be O(1).
(2 Questions)
Round duration - 60 minutes
Round difficulty - Easy
This was a technical round with questions on DSA.
- Q1.
Reverse Words in a String: Problem Statement
You are given a string of length
N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o... - Ans.
Reverse words in a string while handling leading, trailing, and multiple spaces.
Split the input string by spaces to get individual words
Reverse the order of the words
Join the reversed words with a single space in between
- Q2.
Circular Linked List Detection
You are provided with the head of a linked list containing integers. Your task is to determine if the linked list is circular.
Note:
- A linked list is considered circula...
- Ans.
Detect if a given linked list is circular by checking if it forms a closed loop.
Traverse the linked list using two pointers, one moving at double the speed of the other.
If the two pointers meet at any point, the linked list is circular.
If the faster pointer reaches the end of the list (NULL), the linked list is not circular.
Round duration - 30 minutes
Round difficulty - Easy
HR round with typical behavioral problems.
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Interview Preparation Tips
Experience: The questions were of medium to high difficulty. What set this test apart was the fact that each question had different weightage ranging from 0.5 to 3 marks per question. Time was a major factor. So my strategy was to attempt all the 1 and 1.5 marks questions which constitute the major chunk of the paper in around 40 minutes and spend the remaining 20 minutes for the 2 and 3 mark questions. I did not even bother reading the 0.5 mark questions. The 2 and 3 mark questions were difficult and those will differentiate you from others. 1600 students wrote the test and only 86 got shortlisted for the next round.
Duration: 60 minutes
Total Questions: 40
Round: Technical Interview
Experience: I was asked to write a C program to print the Fibonacci sequence and a basic SQL query. Apart from this I was asked a puzzle and other questions related to my resume. Out of the 86, only 26 students were called for the next round which again was a technical interview.
Round: Technical Interview
Experience: This was similar to the first technical interview. I had to write a C program to print the prime numbers between 1 and 100 and a puzzle was asked again. Apart from this a guesstimate to find the number of cars between 2 places was asked and a scenario based question too was asked. These were followed by resume related questions.
Round: HR Interview
Experience: All the 26 students who attended the second technical round were allowed to attend HR round as well. This was just for 4 - 5 minutes. I was asked about my family background and why I should be hired. My fondest memories from school days were asked too. Finally offer letter was given to 10 students out of the 1600 who wrote the test :P
General Tips: Just keep a calm head and attempt the questions. Ask for time to think if you are not able to answer the questions immediately. Be bold and confident. That is sufficient :)
Skills: Puzzle Solving Capability, Ability To Think, SQL, C Programming
College Name: VIT Vellore
Software Engineer Interview Questions & Answers
MAQ Software
Rohit Karnatakapu
posted on 10 Nov 2015
Interview Preparation Tips
Experience: They selected students who have CGPA greater than 8.5.After the selection was done,we had skype interviews where each student was given a slot.In the interview they ask you about 'tell me about yourself',your projects.You should explain the projects exactly and clearly.They ask you better alternatives for implementing the project.After that on the basis of the project they ask you questions related to that subject.Data structures is very important.After the questions on projects were asked they ask you to write programs on data structures(simple programs). They asked me a program to reverse a singly linked list. After that,if they are impressed with it,they go for databases.One should be thorough with functionalities of each key.If time permits they may ask you puzzles(some of my friends were asked). Quite an easy interview.They give you enough time to think so no worries.People with some interview experience can easily crack this.The main objective of the interviewer is he/she checks whether the student is perfect in the concepts learned.
Tips: Don't be panic.If you don't know anything directly say 'I don't know'. They ask you very easy questions.
General Tips: Don't be panic.Since this is skype interview you can be relaxed.Be cool and focussed .Listen to the interviewer questions carefully.
Skills: Database Management, Algorithms And Data Structures
College Name: VIT Vellore
Motivation: Company works on latest trends like azure,etc and they work on projects related to microsoft.
ABHISHEK V
Interview Preparation Tips
Experience: 1st Round : 30 Aptitude Questions (Difficulty Level-HIGH) with nega
tive marking- My Score 15/30, Highest in the test
+ 2 Coding Questions ( Dyanamic Programming + N-Queens Problem)
Round: Technical Interview
Experience: Technical Interview- Questions based on recurssion DSA, HTML.
General Tips: Just know the project you have done in details , don't bluff
First Interview and got it in single shot.
Skill Tips: Karumanchi for DSA, w3 Schools for web related topics DBMS and SQL from Tutorial point.
Skills:
College Name: NIT Surathkal
I applied via Referral and was interviewed before Jul 2020. There were 4 interview rounds.
Interview Questionnaire
1 Question
- Q1. SQL joins,group by ,window functions ,difference between where and having syntax and python manipulation questions such as subsetting ,aggregation ,pivot ,group by .Guesstimate to find total number of traf...
Interview Preparation Tips
I appeared for an interview in Feb 2021.
Interview Questionnaire
1 Question
- Q1. Project, thesis, sql joins, rank function, palindrome.
Interview Preparation Tips
Good projects help.
I applied via Naukri.com and was interviewed before Sep 2020. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. Basics of Java ,MySQL
- Q2. For java do all object oriented programming (oops) concept very deeply
- Ans.
Java supports OOP concepts like encapsulation, inheritance, polymorphism, and abstraction, enhancing code reusability and maintainability.
Encapsulation: Bundling data and methods. Example: private variables with public getters/setters.
Inheritance: Deriving new classes from existing ones. Example: class Dog extends Animal.
Polymorphism: Ability to take many forms. Example: method overriding and overloading.
Abstraction: H...
- Q3. For mysql do all basics commands and query
- Ans.
Basic MySQL commands include creating databases, tables, inserting data, querying, updating, and deleting records.
CREATE DATABASE db_name; // Creates a new database
USE db_name; // Selects the database to use
CREATE TABLE table_name (column1 datatype, column2 datatype); // Creates a new table
INSERT INTO table_name (column1, column2) VALUES (value1, value2); // Inserts data into a table
SELECT * FROM table_name; // Retriev...
Interview Preparation Tips
I appeared for an interview before Oct 2020.
(1 Question)
Round duration - 40 minutes
Round difficulty - Medium
Asked about time complexity of algorithm, puzzles, DBMS, cutting edge technologies etc. What are indexes?
- Q1.
Flip Bits Problem Explanation
Given an array of integers
ARRof size N, consisting of 0s and 1s, you need to select a sub-array and flip its bits. Your task is to return the maximum count of 1s that can b... - Ans.
Given an array of 0s and 1s, find the maximum count of 1s by flipping a sub-array at most once.
Iterate through the array and keep track of the maximum count of 1s obtained by flipping a sub-array.
Consider flipping a sub-array from index i to j and calculate the count of 1s in the resulting array.
Return the maximum count of 1s obtained by flipping a sub-array at most once.
(1 Question)
Round duration - 20 minutes
Round difficulty - Medium
Asked 1 standard algorithm
- Q1.
Number of Islands Problem Statement
You are provided with a 2-dimensional matrix having
Nrows andMcolumns, containing only 1s (land) and 0s (water). Your goal is to determine the number of islands in t... - Ans.
Count the number of islands in a 2D matrix of 1s and 0s.
Iterate through the matrix and perform depth-first search (DFS) to find connected 1s.
Mark visited cells to avoid redundant traversal.
Increment island count whenever a new island is encountered.
Interview Preparation Tips
Tip 1 : prepare for competitive programming
Tip 2 : know about standard algorithm
Tip 3 : must be good with dbms
Tip 1 : must have projects, which you can explain to them
Tip 2 : have things on resume, that you are totally certain about.
Skills evaluated in this interview
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