Mobikwik Software Developer Intern Interview Questions, Process, and Tips

Round duration - 90 minutes
Round difficulty - Medium

Timings: it was late night. I started the test at 10 pm

Q1. 
Partial BST Problem Statement
Check if a given binary tree is a Partial Binary Search Tree (BST). A Partial BST adheres to the following properties:
• The left subtree of a node contains only nodes with...read more
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Round duration - 45 minutes
Round difficulty - Medium

It was the interviw round.
the environment was good.
the interviewer was very nice to me.

Q1. 
Merge Two Sorted Linked Lists Problem Statement
You are provided with two sorted linked lists. Your task is to merge them into a single sorted linked list and return the head of the combined linked list.
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Round duration - 60 minutes
Round difficulty - Easy

I had the flexibility to schedule it according to my time zone as the internship was Singapore based so I scheduled it at 9 am in the morning. The environment was similar to pair programming where the interviewer was a software enginner at stripe and asked me to code on any IDE with my screen share enabled. He shared the question on some online coding platform so it depends on you whether you want to use the coding platform or your own IDE. My language was python. The question was to figure out the optimal way to set the servers so that the servers are down for the minimum. One interesting part was to write the unit tests according to check the code on various test cases. I didn't know unit testing in python that time so it left a bad impression definitely. Other than the interviewer was really nice. After the interview ended, he told me about my shortcomings and also told me to learn about unit tests and testing.

Q1. 
Anagram Pairs Verification Problem
Your task is to determine if two given strings are anagrams of each other. Two strings are considered anagrams if you can rearrange the letters of one string to form the...read more
Ans. 
The task is to determine whether two given strings form an anagram pair or not.
• Check if the lengths of the two strings are equal. If not, they cannot be anagrams.

• Create a frequency map of characters for both strings.

• Compare the frequency maps of both strings. If they are equal, the strings are anagrams.

• Return True if the strings are anagrams, False otherwise.
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It consist of 4 DSA ques and few quiz and opps concept based ques
1st was string based Medium level ques.
2nd was a ques based on 2 pointer
And other 2 was from Vector and Linked list easy ques

Q1. It was stock buy and sell ques on leetcode where we need to find Max profit and what day to buy and sell
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Q2. 2d array ques to print natural numbers in spiral form
Ans. 
Print natural numbers in spiral form using a 2D array.
• Create a 2D array with dimensions n x n.

• Initialize variables for row and column boundaries.

• Iterate through the array in a spiral pattern, filling in natural numbers.
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Q3. Hard level linked list ques
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Q1. Describe projects
Ans. 
I have worked on various projects including developing web applications, creating mobile apps, and implementing machine learning algorithms.
• Developed a web application for a retail company to manage inventory and sales data

• Created a mobile app for a fitness tracking platform to track user's exercise routines

• Implemented machine learning algorithms for a recommendation system in an e-commerce website
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Q2. Knowledge testing on ML frameworks
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Had a overall personality, technical & problem solving test with AVP

Q1. One leetcode easy-medium problem
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Q2. Java, springboot and oops question
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Q1. Project related questions
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Q2. System design questions
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Q1. Sql unix transactions flow
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Q2. Sql Java ATM POS transactions flow
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Java 8, Mysql, sprin, c, c++

Q1. Questions based on core java and oops concepts
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