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Lifesight Interview Questions, Process, and Tips
Top Lifesight Interview Questions and Answers
- Q1. Longest Substring with K Distinct Characters You are provided with a string S of length N , consisting of lowercase English alphabet letters, and a positive integer K . ...read moreasked in Software Developer interview
- Q2. Combination Sum Problem Statement Given an array of distinct positive integers ARR and a non-negative integer 'B', find all unique combinations in the array where the su ...read moreasked in Software Developer interview
- Q3. Validate Binary Search Tree (BST) You are given a binary tree with 'N' integer nodes. Your task is to determine whether this binary tree is a Binary Search Tree (BST). B ...read moreasked in Software Developer interview
Lifesight Interview Experiences
3 interviews found
Anonymous
I applied via Approached by Company and was interviewed in May 2023. There were 2 interview rounds.
(4 Questions)
- Q1. Write an SQL query to join tables
- Ans.
SQL query to join tables
Use the JOIN keyword to combine rows from two or more tables based on a related column between them
Specify the columns to be selected from each table
Use ON clause to specify the join condition
- Q2. How would you expand your product to a new market
- Q3. Questions about their product
- Q4. Questions about past experience
Interview Preparation Tips
Skills evaluated in this interview
Product Manager Interview Questions asked at other Companies
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Selected
I applied via LinkedIn and was interviewed before May 2023. There was 1 interview round.
(1 Question)
- Q1. Behaviour based product questions
Production Analyst Interview Questions asked at other Companies
I was interviewed in Jan 2021.
(3 Questions)
Round duration - 75 Minutes
Round difficulty - Medium
This round was with SDE-1
After my introduction , he asked me 3 Questions
- Q1.
Validate Binary Search Tree (BST)
You are given a binary tree with 'N' integer nodes. Your task is to determine whether this binary tree is a Binary Search Tree (BST).
BST Definition:
A Binary Search Tr...
- Ans.
Validate if a given binary tree is a Binary Search Tree (BST) or not.
Check if the left subtree of a node contains only nodes with data less than the node's data.
Check if the right subtree of a node contains only nodes with data greater than the node's data.
Recursively check if both the left and right subtrees are also binary search trees.
Example: For each node, validate if its left child is less than the node and right
- Q2.
Longest Substring with K Distinct Characters
You are provided with a string
Sof lengthN, consisting of lowercase English alphabet letters, and a positive integerK.Your task is to determine the maximu...
- Ans.
Find the longest substring with at most K distinct characters in a given string.
Use a sliding window approach to keep track of the characters and their counts in the substring.
Maintain a hashmap to store the characters and their frequencies.
Update the window size and characters count as you iterate through the string.
Return the maximum length of the substring with at most K distinct characters.
- Q3.
Cycle Detection in Undirected Graph Problem Statement
You are provided with an undirected graph containing 'N' vertices and 'M' edges. The vertices are numbered from 1 to 'N'. Your objective is to determi...
- Ans.
Detect if an undirected graph contains a cycle.
Use depth-first search (DFS) to detect cycles in the graph.
Maintain a visited array to keep track of visited vertices.
If a visited vertex is encountered again during DFS, a cycle exists.
Consider disconnected graphs as well.
Example: For input N=3, Edges=[[1, 2], [2, 3], [1, 3]], output is Yes.
(2 Questions)
Round duration - 90 Miinutes
Round difficulty - Medium
This round was with a Senior Data Engineer as this position was a mix of Backend and Big Data.
- Q1.
Covid Vaccination Distribution Problem
As the Government ramps up vaccination drives to combat the second wave of Covid-19, you are tasked with helping plan an effective vaccination schedule. Your goal is...
- Ans.
Given constraints and rules, find maximum vaccines administered on a specific day during a vaccination drive.
Iterate through each test case and calculate the maximum number of vaccines distributed on the specified day.
Distribute vaccines evenly across days while maximizing the number on the specified day.
Ensure that the sum of vaccines administered does not exceed the maximum allowed.
Consider edge cases like when the n...
- Q2.
Combination Sum Problem Statement
Given an array of distinct positive integers
ARRand a non-negative integer 'B', find all unique combinations in the array where the sum is equal to 'B'. Numbers can be c... - Ans.
Find all unique combinations in an array where the sum is equal to a given target sum, with elements in non-decreasing order.
Use backtracking to generate all possible combinations of elements in the array that sum up to the target sum.
Sort the array to ensure elements in each combination are in non-decreasing order.
Handle duplicate elements in the array to avoid duplicate combinations.
Consider edge cases like empty arr...
(1 Question)
Round duration - 75 Minutes
Round difficulty - Easy
This round was taken by Engineering Manager
There were 2 sections to this round
Technical and Non Techincal
- Q1.
Sliding Window Maximum Problem Statement
You are given an array/list of integers with length 'N'. A sliding window of size 'K' moves from the start to the end of the array. For each of the 'N'-'K'+1 possi...
- Ans.
Sliding window maximum problem where we find maximum element in each window of size K.
Use a deque to store indices of elements in decreasing order within the window.
Pop elements from the deque that are out of the current window.
Append the maximum element from the front of the deque to the result for each window.
Interview Preparation Tips
Tip 1 : Be solid with the basics of Ds, Algo. Good to have end to end projects which are hosted on cloud.
Tip 2 : Its always good to be presentable and have good communications skills
Tip 3 : Be honest, clear in approach and always walkthrough your thought process to the interviewer
Tip 1 : Mention your projects and experience at the top. Be clear on what was done, a brief on how it was done, language /tech stack involved. If possible try to host and make it accessible. You never know if you can present it with just one click.
Tip 2 : Choose a balance between, white spaces and text, it should be well indented, no grammatical errors.
Tip 3 : It takes less than 2 min to scan a resume. Don't mention things which are irrelevant.
Skills evaluated in this interview
Top Lifesight Software Developer Interview Questions and Answers
Software Developer Interview Questions asked at other Companies
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Business Analyst Interview Questions & Answers
Capillary Technologies
Sachindra Sahu
posted on 24 Mar 2015
Interview Preparation Tips
Experience: I was really frustrated because of the rejection from previous companies and in the same time deeply determined to convert this one as this was the last company offering the profile of Business Analyst. I can say this based on my experience that converting a company is solely a matter of your preparation and self-confidence but a tad bit of luck is also a necessity.
Tips: I have been particularly lucky and so have been all the serious CAT aspirants in the online tests. It is not that you need to enroll in TIME with the word go, but rather analyzing your calculation speed, your communication and interpretation skills can do you wonders.
Duration: 60 minutes
Total Questions: 50
Round: Group Discussion
Experience: Obviously the topic was on Indo-Sino relations, which I was quite aware of. As this a topic on foreign policy, very few people were actually aware of this topic, so I had an obvious advantage. This is the most trite advice but still I will say this "Read, Read,Read".
Tips: There are always some people who are well informed of the given topic and some who are not and it is always helpful to be in the first group in GDs. I like to be up to date on current affairs and at the same time reading novels from the likes of Shashi Tharoor and my personal favorite Khaled Hosseini prepared me for group discussions. It is always helpful to proceed by looking @ the problem from different perspectives like legal, social, academic and technical or else if you are particularly unlucky you might face an abstract topic, where you might need to use your imagination, like one my friend faced "Yellow shoes with pink laces". Even now I cannot aptly describe this topic.
Skills: Communication Skills, Calculations, Verbal, Knowledge on current affairs
College Name: NIT BHOPAL
Motivation: My only motivation was the post the company was offering. As it will be helpful for future plans of working in an Investment Bank or pursuing an MBA.
Funny Moments: In the Interview round, they asked me why do you want join this company. In reply I started with the word 'Firstly' and said because of its profile and did not not think of the second reason and they asked this very thing. I took my moment and realized honesty is best possible way now and replied that you are last non-core company visiting this campus and if you guys reject me I might leave this campus unplaced (because of my weak technical background). On hearing this they started laughing and at that very moment I knew I might not after all.
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
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.
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
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 Preparation Tips
Experience: CAT type questions were asked.
Duration: 75 minutes
Round: HR Interview
Experience: It was a nice experience.Basic simple questions were asked, like- family background, achievement,s extracurricular activities, projects, etc.
Tips: Be calm and confident.
College Name: NIT WARANGAL
Interview Questionnaire
4 Questions
- Q1. Tell about yourself
- Q2. Basic c programs
- Q3. Tell about your parents
- Q4. Explain your standing project
Interview Preparation Tips
Experience: They have selected those who have no standing arrears
Tips: Clear arrears before 5 sem
Round: Test
Experience: Quantitative is little tough but i am lucky that i am able to solve the problems
Tips: Use formulas
Duration: 65 minutes
Total Questions: 90 min
Round: Group Discussion
Experience: No group discussion
Tips: Prepare well for GD
Round: HR Interview
Experience: I have spoke for 2 min and hr was impressed for it. Wrote some programs. Explained my project
Tips: For any hr interview prepare about your self. Learn some basic c programs, learn your project diagram. If u have any questions ask to hr to impress him
General Tips: Start doing some apptitude questions
Skill Tips: Whatever you talk, speak it clearly. Dont get tension
Skills: communication skill
College Name: SATHYABAMA UNIVERSITY
Motivation: Our seniors
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