ElogicSquare Analytics Interview Questions and Answers

Q1. Tell me about yourself.
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Q2. What is the experience of the previous job and how was it?
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Band of baroda ke normal question

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Q1. Tell about yourself previous experience and family questions
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Round duration - 90 minutes
Round difficulty - Medium

The online test was scheduled on 10:00 AM. Total 304 students were eligible who appeared for the test. 93 students were shortlisted in this round. MCQs were asked and two coding question

MCQs were of medium to hard level.
OOPS(2 Question)
DBMS(2 questions)
Networking(2 Questions)
Operating System(2 Questions),
Aptitude(2 Questions)

Q1. 
Maximum Subarray Sum Problem Statement
Given an array arr of length N consisting of integers, find the sum of the subarray (including empty subarray) with the maximum sum among all subarrays.
Explanation...read more
Ans. 
A subarray is a contiguous segment of an array. In other words, a subarray can be formed by removing 0 or more integers from the beginning, and 0 or more integers from the end of an array. I used Kadane's algorithm to solve it optimally. 
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Q2. 
Flipping Coins Problem
Gary has N coins placed in a straight line. Some coins have their head side up, and others have the tail side up.
Convention:
1 denotes the HEAD side is up. 
0 denotes the TAIL sid...read more
Ans. Brute force
1. The idea is to check every subarray.
2. We can count the number of heads and number tails in every subarray and then calculate the maximum number of heads side up we can obtain if we flip that particular subarray.
3. We also keep a count of the final start index and final end index that will give us the number of heads side up we can obtain later.
Space Complexity: O(1)Explanation:
O(1).
 
In the worst case, only ...read more
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Round duration - 60 minutes
Round difficulty - Medium

It was technical interview round, which was purely based on coding followed by 1 SQL query. Duration of round was of 1 hour from 10 AM-11AM. Interviewer asked me 2 Coding questions one to solve and run on Hackerrank codepair platform and for another one she asked only my approach to solve problem. In the remaining last 10 minutes interviewer asked me 1 SQL query on JOIN. Total 28 students were shortlisted in this round.

Q1. 
First Missing Positive Problem Statement
You are provided with an integer array ARR of length 'N'. Your objective is to determine the first missing positive integer using linear time and constant space. T...read more
Ans. 
I gave him the optimized solution.
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Q2. 
Problem: kth Missing Element in a Sequence
Given a strictly increasing sequence of integers VEC, identify the Kth missing contiguous integer element that is not present in the sequence, starting from the ...read more
Ans. 
I told the solving approach by using max heap in O(NlogK) time complexity.
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