Novartis Full Stack Engineer Interview Questions and Answers

Round duration - 60 minutes
Round difficulty - Hard

It consisted of three coding questions in a medium to a hard range of difficulty along with 25 Technical MCQ(s) to be answered in an hour.

Q1. 
Maximum Size Rectangle Sub-matrix with All 1's Problem Statement
You are provided with an N * M sized binary matrix 'MAT' where 'N' denotes the number of rows and 'M' denotes the number of columns. Your t...read more
Ans. 
The task is to find the maximum size of a submatrix consisting of all 1's in a given binary-valued matrix.
• Iterate through each cell of the matrix

• For each cell, calculate the maximum size of a submatrix with that cell as the top-left corner

• Keep track of the maximum size encountered so far

• Return the maximum size
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Q2. 
Count the Number of Ones Problem Statement
Given an integer N, calculate the total number of times the digit '1' appears in each number from 0 to N inclusive.
Input:
T (number of test cases)
Each test ca...read more
Ans. 
The task is to count the number of occurrences of the digit '1' in each number from 0 to N.
• Iterate through each number from 0 to N

• Convert each number to a string

• Count the number of occurrences of the digit '1' in the string representation of each number

• Return the total count of '1's
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Round duration - 60 minutes
Round difficulty - Medium

My interview lasted an hour. It was all virtual and a “Microsoft teams” link was sent to the shortlisted candidates for this round. Two interviewers were interviewing one student at a time. I introduced myself and then the interviewers directly asked me to talk about my projects. The questions asked were mostly from the projects, research papers (if any) from the resume. In-depth knowledge of the projects done as needed. My research paper particularly took their attention which was based on Deep Learning and I had to explain my project in detail for about 20–25 minutes. They asked various typical questions on Deep Learning Algorithms (Why, How, etc). The interviewers tried to pressure me into changing my answers being confident was the key. Then they asked some questions from Java, OOPs, and DBMS. One of the interviewers asked me to rate my proficiency in Java on a scale from 1 to 10. Lastly, to check my problem-solving skills they gave me a mathematical formula and asked me to prove it by drawing a geometrical shape on a graph. I thought for a minute and came up with the answer and they were impressed.

Round duration - 20 minutes
Round difficulty - Easy

It lasted 20 mins. The HR interviewer was very friendly.