EduTech VC Interview Questions and Answers

Asked about the SQL and python.

Q1. Told about the Offered role responsibilities.
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Q2. Ask about the previous work experience.
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Mostly Excel based, and they see if your answers are logical or not!

If you have visualization like PowerBi or Tableau Project then they will ask to explain and share details!

Q1. What you know about mensa and all!
Ans. 
Mensa is an international high IQ society that provides a forum for intellectual exchange among its members.
• Mensa was founded in 1946 in the UK by Roland Berrill and Dr. Lance Ware.

• To join Mensa, individuals must score in the top 2% of the general population on a standardized intelligence test.

• Mensa has members in more than 100 countries around the world.

• The organization hosts various events, gatherings, and activities...read more
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First round was a coding test which has 2 problem solving questions and 3 subjective questions based on C++

Q1. This is also based on problem solving and DSA. A small part will be OS and network.
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More of a subjective round, highly focused on OS, networking and computer architecture.

Q1. This round is with the HM, totally subjective. Highly focused on past experience, current projects etc.
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Q1. HR discussion mostly questions are related to past and current experience.
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3 coding questions

Q1. Design a Time Series Database
Ans. 
A time series database stores data points with timestamps for efficient retrieval and analysis.
• Choose a suitable data model for the database

• Use a time-based partitioning scheme for efficient data retrieval

• Implement compression techniques to reduce storage requirements

• Support for querying and analyzing time-based data

• Ensure data consistency and durability

• Consider scalability and high availability

• Examples: InfluxDB, Time
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2 coding questions based on DSA.

Q1. Easy coding problem.
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Q2. Medium coding problem.
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Q1. The interview emphasized team collaboration and work ethics, with a particular focus on my overall work experience at my previous company.
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Q2. What were your preferences regarding work locations, specifically your views on working from the office (WFO) compared to working from home (WFH)?
Ans. 
I prefer a mix of both working from the office and working from home.
• I believe in the benefits of face-to-face collaboration and communication that come with working from the office.

• At the same time, I appreciate the flexibility and productivity that working from home offers.

• I think a hybrid approach, where employees have the option to choose between WFO and WFH based on their tasks and preferences, is ideal.

• I have exp...read more
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Q1. Focus was on DS algo and scenario based coding questions
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Q2. Design skills and OS knowledge
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Round duration - 60 minutes
Round difficulty - Easy

This was the qualification round which comprised of several MCQs and 3 coding questions.
It was held on Hackerearth from 3:00 PM to 4:00 PM.
Use of any other IDE was prohibited.

Q1. Given a problem statement and a piece of code, how would you find and correct the bug in the code?
Ans. 
To find and correct a bug in code, analyze problem statement, review code, use debugging tools, and test different scenarios.
• Understand the problem statement and expected output.

• Review the code for syntax errors, logical errors, and potential bugs.

• Use debugging tools like breakpoints, print statements, and IDE debuggers.

• Test the code with different inputs to identify the bug.

• Make necessary corrections based on the iden...read more
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Q2. 
Print Nodes at Distance K from a Given Node
Given an arbitrary binary tree, a node of the tree, and an integer 'K', find all nodes that are at a distance K from the specified node, and return a list of th...read more
Ans. 
Given a binary tree, a target node, and an integer K, find all nodes at distance K from the target node.
• Traverse the binary tree to find the target node.

• Use BFS to traverse the tree from the target node to nodes at distance K.

• Keep track of the distance while traversing the tree.

• Return the values of nodes at distance K in any order.
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Round duration - 90 minutes
Round difficulty - Medium

I was shared a link of Google Meet and the Google Docs was shared where there was 1 coding problem to be coded there and then the code was run on an IDE to check the sample tests.
Then the interview was followed by a lot of Operating System and Computer System Architecture Questions.
There were 2 Interviewers and both were helpful.
The timing was from 2:30 PM to 4:00 PM

Q1. 
Subarray Challenge: Largest Equal 0s and 1s
Determine the length of the largest subarray within a given array of 0s and 1s, such that the subarray contains an equal number of 0s and 1s.
Input:
Input beg...read more
Ans. 
Find the length of the largest subarray with equal number of 0s and 1s in a given array.
• Iterate through the array and maintain a count of 0s and 1s encountered so far.

• Store the count difference in a hashmap with the index as the key.

• If the same count difference is encountered again, the subarray between the two indices has equal 0s and 1s.

• Return the length of the longest subarray found.
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Round duration - 45 minutes
Round difficulty - Easy

The round was held on Google Meet with HR from 2:30 PM to 3:15 PM.
The HR was friendly and asked the basic questions.

Round duration - 90 minutes
Round difficulty - Easy

Consisted of 3 DSA questions and MCQ on python proficiency

Q1. 
Palindromic Substrings Problem Statement
Given a string S, your task is to return all distinct palindromic substrings of the given string in alphabetical order.
Explanation:
A string is considered a pal...read more
Ans. 
Return all distinct palindromic substrings of a given string in alphabetical order.
• Iterate through all possible substrings of the given string.

• Check if each substring is a palindrome by comparing it with its reverse.

• Store all palindromic substrings in a set to ensure uniqueness.

• Return the sorted list of palindromic substrings.
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Round duration - 60 minutes
Round difficulty - Medium

It was a pure DSA round and interviewer was very helpful with providing significant hints to solve the given problems

Q1. 
Island Perimeter Calculation Problem
Given a binary grid representation of a map of an island, calculate the perimeter of the island. The grid uses '0' for water and '1' for land.
The grid has only one i...read more
Ans. 
Calculate the perimeter of an island represented by a binary grid.
• Iterate through the grid and count the perimeter based on land cells and their adjacent cells.

• Each land cell contributes 4 units to the perimeter, subtract 2 units for each adjacent land cell.

• Handle edge cases where land cells are at the boundaries of the grid.

• Return the total perimeter for each test case.
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Round duration - 60 minutes
Round difficulty - Hard

DSA+OS

Q1. 
Clearing the Forest Problem Statement
Ninja lives in a city called Byteland where a festive event is being organized. To make space for this event, Ninja is tasked with clearing a nearby forest. The fores...read more
Ans. 
Calculate the minimum number of steps Ninja needs to cut down all trees in a forest grid.
• Iterate through the grid to find the shortest path to cut down all trees in order.

• Use a priority queue to keep track of the shortest trees to cut next.

• If it's impossible to cut all trees, return -1.

• Consider all four cardinal directions for movement in the grid.
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