ZestMoney Software Developer Interview Questions and Answers

Time and work ,time and distance

Q1. 1 - Easy Medium Question. Discuss the approach with interviewer and then implement it. The code should work, thats important.
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Q1. LLD round to design Chess.
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Q1. Hiring manager round. Grilling on resume and past experience questions
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Q1. There were 3 dsa questions which were of topic arrays and strings
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Q1. It was more like a managerial round where they asked questions about resume projects and past experience
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They have problem of K sorted array and you need to make an sorted array of it.

Q1. Your current job role
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Q2. Software Developer
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Basic logic question

Q1. Basic core knowledge
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Q1. What are your salary expectations?
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Q2. What is your family background?
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Q3. Tell me about yourself.
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Round duration - 50 mins
Round difficulty - Medium

First round was coding round, where i was asked 2 DS algo questions, 1 was easy and other was of medium difficulty

Q1. Shortest Path in a Binary Matrix
You have been given a binary matrix of size 'N' * 'M' where each element is either 0 or 1. You are also given a source and a destination cell, both of them ...read more
Ans. 
First i explained the approach. when he was satisfied with the approach, I was asked to code it.
Answered by CodingNinjas
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Round duration - 50 mins
Round difficulty - Easy

I was asked to design url shortner

Q1. System Design Question
I was asked to design url shortner
Ans. 
Tip 1 : First clearly ask the requirements of the problem.
Tip 2 : Start with simple design and then narrow the constraints 
Tip 3 : Explain the reasons begin ur choices of data structures/ DB
Answered by CodingNinjas
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Round duration - 50 mins
Round difficulty - Medium

This was hiring manager round

Q1. Basic HR questions
One coding problem, discussion about past projects and other behavioural questions
Ans. 
Tip 1 : Prepare well about ur past projects, bcoz they will be asking it for sure
Tip 2 : Be confident and humble
Tip 3 : Be Genuine
Answered by CodingNinjas
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Round duration - 90 minutes
Round difficulty - Hard

Timing was 9 PM. Platform was not good. Platform was very lagging so overall it was bad experience.

Q1. Third greatest element
Given an array/list 'ARR' of ‘N’ distinct integers, you are supposed to find the third largest element in the given array 'ARR'.
Input Format :
The first line conta...read more
Ans. Sorting Based Approach
The idea is to sort the array in non-decreasing order, and then return the third element from the back of the array.
 
The steps are as follows :
1. Sort the array in non-decreasing order.
2. Return the third element from the back of the array.
Space Complexity: O(logn)Explanation:
O(1)
 
We are not using any extra space. Thus, the overall space complexity will be O(1).
Time Complexity: O(nlogn)Explan...read more
Answered by CodingNinjas
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Q2. Longest Palindromic Substring
You are given a string (STR) of length N.
Your task is to find the longest palindromic substring. If there is more than one palindromic substring with the maximum length, re...read more
Ans. Brute Force
1. Generate substrings of the given string such that substring having greater length will be generated first.
2. To do this, run a loop where iterator ‘LEN’ will go from N to 1, where N is the length of the given string.
3. Run a nested loop and fix an iterator ‘j’ that will point at the starting index of the substring.
4. Get the substring from ‘j’ to ‘j’ + ‘LEN’.
5. If the substring is a palindrome, return the substring (as ...read more
Answered by CodingNinjas
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Q3. Ninja and Geometry
Ninja has been given 2 points ‘A’ and ’B’ that corresponds to the line ‘AB’ and ‘P’, ’Q’ that corresponds to line ‘PQ’ on a 2D plane. Ninja wants to find the intersection point of the ‘A...read more
Ans. Mathematics
The idea behind this approach is to derive the equation of both of the lines ‘AB’ and ‘PQ’ and check if the Slope of these two lines is equal or not. Following are the two cases:
• If the slope of ‘AB’ and ‘PQ’ is the same that means they are parallel so we return -1.
• Else there must a point where ‘AB’ and ‘PQ’ are intersecting.
For a better understanding of this approach, Assume that we have two points which are...read more
Answered by CodingNinjas
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