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Host2Unlimited Interview Questions and Answers
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Interview Questionnaire
2 Questions
- Q1. Little discussion on my project
- Q2. Given a chessboard and the initial position of horse. If “n” is the number of steps the horse can make then what is probability that it goes out of board ?
- Ans.
Probability of a horse going out of a chessboard in 'n' steps.
The total number of possible moves for a horse is 8.
The probability of going out of the board depends on the position of the horse.
For example, if the horse is at a corner, the probability of going out of the board is higher.
The probability can be calculated using combinatorics and geometry.
Interview Preparation Tips
Experience: They did not expect any code in this round. An algo or pseudo code is fine.
1) You are given 2 vessels with capacity M liters and N liters capacity and infinite supply of water. You need to find the minimum number of steps required to get P liters. Any of the below action is considered a step
a) Filling vessel with water
b) Emptying vessel
c) Pouring water from one vessel to another vessel.
2) Given n sets each containing m integers. You need to create MinDiff set by picking exactly 1 element from each set. The difference between the maximum and minimum elements in the MinDiff set should be minimum.
eg: for the sets {30, 20, 10, 40},{ 22, 33, 44, 99},{ 16, 17, 18, 19} min diff set is {19, 20, 22}. Max and min elements in MinDiff set are 22 and 19 and their difference is 3.
Round: Technical Interview
Experience: 1) you will be given the binary representation of the numbers in the form of 2D array.eg: r1- 00001
r2- 00100
r3- 01010
r4- 00110
r5- 00111 This means the elements are 1, 4, 10 , 6 and 7.
A number “n” is given. Let us say that n can be formed by doing bitwise OR operation on rows of given matrix. What is the minimum number of rows that needs to be deleted from the matrix so that “n” can never be formed by doing the OR of the rows.
If n is 14(01110) then it can be formed by doing r2|r3 or r3|r4. You can prevent n formation either by deleting {r2,r4} or {r3}. But {r3} has least number of elements so it is the required set.2) Find the average of mid 50% of elements in the running stream of integersI have not cleared round-II so no further questions.
College Name: IIT GANDHINAGAR
Interview Questionnaire
3 Questions
- Q1. Algorithms on arrays and strings (coding)
- Ans.
Algorithms for manipulating arrays and strings in coding
Use sorting algorithms like quicksort and mergesort for arrays
Use string manipulation functions like substring and replace for strings
Use dynamic programming for optimizing solutions to array and string problems
- Q2. Distributed Database Design
- Q3. Large scale Ad Server Design
- Ans.
Designing a large scale Ad Server
Use distributed systems for scalability
Implement caching for faster ad delivery
Ensure high availability and fault tolerance
Use real-time bidding for efficient ad placement
Implement fraud detection mechanisms
Ensure compliance with privacy regulations
Interview Preparation Tips
Experience: They tested on thought-process during design problems. What problems are with the current solution I suggested and how to improve it...
Tips: Hints from interviewer are very helpful
Keep talking while you are thinking
Skills: Algorithms, Thinking Skills, Coding
College Name: IIT KHARAGPUR
Skills evaluated in this interview
Interview Questionnaire
9 Questions
- Q1. Find Maximum sub sequence sum in an array ?
- Ans.
Maximum sub sequence sum in an array
Use Kadane's algorithm
Initialize max_so_far and max_ending_here to 0
Iterate through the array and update max_ending_here and max_so_far
Return max_so_far
- Q2. What do you understand by the endianness of the system ? How do you find out the the type of endianness ?
- Ans.
Endianness refers to the byte order of a system. It determines how multi-byte data types are stored in memory.
Little-endian systems store the least significant byte first, while big-endian systems store the most significant byte first.
Endianness can affect the way data is transmitted between systems.
To determine the endianness of a system, you can use the byte order mark (BOM) or write a test program that checks the by...
- Q3. Sort an array which consists of 0's and 1's only
- Ans.
Sort an array of 0's and 1's only.
Use two pointers, one at the beginning and one at the end of the array.
Swap 0's from the beginning with 1's from the end until the pointers meet.
Alternatively, use a counting sort algorithm to count the number of 0's and 1's and then reconstruct the array.
- Q4. A question on applications of minimum spanning tree, apply prim's or kruskal's algorithm
- Q5. What do you understand by Heaps, max and min heaps ?
- Ans.
Heaps are data structures used to efficiently find the maximum or minimum element in a collection.
Max heap: parent nodes are always greater than or equal to child nodes
Min heap: parent nodes are always smaller than or equal to child nodes
Heaps are commonly used in priority queues and sorting algorithms
Heap operations include insert, delete, and extract max/min
Example: An array [3, 8, 2, 5, 1, 4, 6] can be represented a
- Q6. What do you understand by hashing ? questions on application of hashing
- Q7. Find 3 nos a,b and c in an array where a+b = c
- Ans.
Find 3 numbers in an array where a+b=c.
Loop through the array and check for all possible combinations of a and b.
Use a hash table to store the values of a and b, and check if c is present in the hash table.
Sort the array and use two pointers to find a and b, and then check if their sum equals c.
- Q8. Some puzzles, as the other interviewee said, but not asked to me
- Q9. Questions on Dynamic programming
Interview Preparation Tips
Skills evaluated in this interview
Anshul Gupta
I applied via Campus Placement
Interview Questionnaire
3 Questions
- Q1. Tell me one thing about you that's not listed on your resume
- Ans.
I am an avid traveler and have visited over 20 countries
I love experiencing new cultures and trying new foods
I have backpacked through Europe and Asia
I have volunteered in orphanages in Cambodia and Nepal
- Q2. When you hear InMobi, what's the first word that comes in your head?
- Ans.
Mobile advertising platform
Adtech
Mobile marketing
App monetization
- Q3. The office of InMobi technologies has 10 floors, each with 300 employees. In the morning (7-8 AM), the building sees 3000 employees entering and waiting in a queue for 3 lifts. In the morning, everyone goe...
Interview Preparation Tips
Experience: The first round was a resume shortlist, which I think was on the basis of programming and coding courses (and projects) taken along with your CGPA. Out of 10 shortlisted people, I knew 4 and all of us were 9 pointers. The rest who I didn't know turned out to be 9 pointers as well! :P
Out of 10 shortlisted people, 3 (including me) were from ECE and the rest were from CS. Even though InMobi was open for Mathematics & Computing, no person from MnC dept. was in the shortlist. (Presumably due to their CGPAs or some other criterion that I'm not in the knowledge of.)
Tips: i) High CGPA is a must (We're talking above 9, at the end of 2nd year for CS/ECE and 3rd year for MnC)
ii)Taking programming and algorithm courses and projects is important, as that must be visible in your resume.
Round: Puzzle Interview
Experience: One special thing about the interviews, you're asked not to wear any formals! That actually helps in taking the tension off of things!
It's simple logic, after that. Increase the lift's speed (taking in mind of the safety), collecting usage data, optimising the lift's floor-stoppage according to that.
As told after the interview, the interviewer is just observing how you think and approach a problem.
One odd thing was not being asked about any coding/algorithm questions even though the profile was for a software engineer.
After this question, I was asked if I had any questions to ask. I simply stated that the work environment and culture affected me as much as the profile I'm applying for. Thus, the drive and motivation of the people who work there is also very important. So I asked what are the companies' values which the employees believe in, too.
Tips: Stay confident, don't let any tension get to your head.
In the future, InMobi may start asking coding questions too in the interviews. or change the selection procedure, which will be communicated in the PPT of InMobi.
Whatever may happen, the first round should show your zeal to solve problems, your creativity in trying different approaches, and applying logic to find the best solution.
Round: HR Interview
Experience: OK! There were a lot of questions asked since the interview was more like a conversation taking place. Like in ANY conversation, keep proper eye contact, smile and be approachable for any questions. Show enthusiasm in your voice and your answers. The interviewer asked me questions about
i)My resume, and all the activities that I'd listed there. (eg: Why did you enlist in this course? Do you like coding?)
ii)Why programming, how does it interest you?
iii)Basic questions about InMobi, like 'What do you know about us after attending the PPT?' and 'Why InMobi'
Since I had done quite a lot of marketing activities, I was also asked about that. Will you do an MBA in the future? What all did you do for marketing? I had a strong background in digital marketing, and we had a little chat about mobile marketing and what's the future of mobile advertising.
Tips: Smile, for god's sake! It's a conversation about you, do all the basic things to improve the conversational experience.
Small things like greeting the interviewer, smiling, proper eye contact, and speaking properly are paramount.
Like in any HR interview, make sure you know yourself and your resume properly, so that you don't phase out in the interview when asked some 'unexpected' question. (since that's when they know thatyou might be lying/exaggerating). Hence introspect enough before sitting the interviews.
General Tips: Make sure you're able to convince yourself and the interviewers for why do you want to work in Inmobi Technolgies.
I've already shared the rest in previous sections! :)
2 people out of 10 were selected for this internship experience, so make sure you prepare well! All the best! :D
Skill Tips: I don't think that this adds on as a skill, but InMobi wants to create a huge impact on the mobile world and the mobile advertising sector.
Your knowledge about this sector in general could help you strike good conversations (at least in the HR round).
Skills: Logic, Problem Solving Abilties, Creativity, Communication Skills
Duration: 2.5
College Name: IIT Kharagpur
Motivation: I'm a gadget geek from my childhood. The mobile industry amazes me as it's been the biggest change-bringer in the modern world. InMobi as a company wants to create a huge impact in the mobile advertising space and mobile advertising! And seeing their products that they offer in this domain had me thinking that they're doing something unique and awesome!
The work culture of InMobi is just amazing, right from flexible work hours to the epic office they have in Bangalore full of awesome people working towards that one goal! Also, InMobi offers their employees opportunities to shift between various verticals if they want to. All of this (along with a good compensation ;-) ) was enough motivation for me to apply!
Funny Moments: When I was asked whether I was in the third year, I said yes, and then said, usually people think that I'm still in high school!
We had a good laugh on that one! :P
Otherwise also, the entire procedure was relaxed and fun in general.
I applied via Recruitment Consultant and was interviewed in Oct 2021. There were 3 interview rounds.
Interview Questionnaire
6 Questions
- Q1. Tell me about yourself
- Q2. Business Process Transformation
- Q3. Frameworks used by a Business Analyst
- Ans.
Business Analysts use various frameworks to analyze and solve business problems.
SWOT Analysis
PESTLE Analysis
Porter's Five Forces
Business Model Canvas
Value Stream Mapping
- Q4. How do you handle conflicts between team members and also stakeholders?
- Q5. Questions on SQL, Tableau and Power BI
- Q6. Why do you think you're suitable for this role?
Interview Preparation Tips
Associate Software Engineer Interview Questions & Answers
R.R. Donnelley
Anonymous
posted on 9 Jun 2022
I appeared for an interview before Jun 2021.
40/50marks
They ask fibanocci series , basic c programs
Discuss about general topic
Write a essay on your own life
(3 Questions)
- Q1. Css HTML tags,sql,angul
- Q2. Angular js dot net developer
- Q3. Web configuration , CTS
(2 Questions)
- Q1. Salery discussion and expecting ctc
- Q2. Will you think are you okay
Interview Preparation Tips
I applied via Naukri.com and was interviewed before Oct 2021. There were 2 interview rounds.
(1 Question)
- Q1. They are asking technical questions what is their in the resume
(1 Question)
- Q1. They will technical questions as per your resume what you mentioned
Interview Preparation Tips
Senior Software Engineer Interview Questions & Answers
R.R. Donnelley
Anonymous
posted on 27 Oct 2021
I applied via Recruitment Consultant and was interviewed in Apr 2021. There were 4 interview rounds.
Interview Questionnaire
7 Questions
- Q1. What is scope of variable in perl.
- Ans.
Scope of variable in Perl determines where the variable can be accessed.
Perl has three types of variable scope: global, local, and lexical.
Global variables can be accessed from anywhere in the program.
Local variables are declared using the 'my' keyword and can only be accessed within the block they are declared in.
Lexical variables are declared using the 'state' keyword and can be accessed within the block they are dec...
- Q2. Perl logic questions.
- Q3. Perl regex questions
- Q4. Perl module question
- Q5. Grep and map function
- Q6. What is hash and array in perl
- Ans.
Hash is a data structure that stores data in key-value pairs while array is an ordered list of scalar values.
Hashes are denoted by % symbol and arrays by @ symbol in Perl.
Hashes are useful for storing and retrieving data quickly based on a unique key.
Arrays can be accessed using index numbers starting from 0.
Both hashes and arrays can store different data types such as strings, numbers, and references.
Example: %hash = ...
- Q7. What is CDATA in XML.
- Ans.
CDATA is a way to include special characters in XML data without causing parsing errors.
CDATA stands for Character Data
It is used to include data that contains characters that would otherwise be interpreted as XML markup
CDATA is enclosed in tags
Example:
bold text]]>
Interview Preparation Tips
Senior Software Engineer Interview Questions & Answers
R.R. Donnelley
Anonymous
posted on 29 Jul 2024
I applied via Approached by Company and was interviewed in Jun 2024. There was 1 interview round.
(5 Questions)
- Q1. Pivot columns in sql
- Ans.
Pivoting columns in SQL involves transforming rows into columns to display data in a different format.
Use the PIVOT keyword in SQL to pivot columns
Specify the columns to pivot on and the values to display in the new columns
Aggregate functions like SUM, AVG, COUNT can be used with PIVOT
Example: SELECT * FROM table_name PIVOT (SUM(value_column) FOR pivot_column IN ('value1', 'value2', 'value3'))
- Q2. Slow changing dimensions
- Q3. Dynamic rankx top 3
- Q4. Field parameters
- Q5. Stored procedures
Interview Preparation Tips
Better avoid this company
Skills evaluated in this interview
Senior Software Engineer Interview Questions & Answers
R.R. Donnelley
Anonymous
posted on 4 Sep 2023
Selected
I applied via Naukri.com and was interviewed in Aug 2023. There were 4 interview rounds.
(1 Question)
- Q1. Explain oops concepts, difference b/w abstraction and interface,MVC architecture,stored procedure,joins
- Ans.
OOPs concepts, abstraction vs interface, MVC architecture, stored procedures, joins
OOPs concepts include inheritance, polymorphism, encapsulation, and abstraction
Abstraction is hiding the implementation details while interface is a contract that defines the methods that a class must implement
MVC architecture separates the application into Model, View, and Controller components for better organization and maintenance
Sto...
SQL queries, ddl,dml TCL commands, primary key and foreign key differences,what is composite key,hash table in c#,generics in c#.
(1 Question)
- Q1. Salary discussion,
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