MNC Group .NET Software Developer Interview Questions and Answers

Round duration - 45 Minutes
Round difficulty - Easy

The interviewer was friendly. Explained the question well. Allowed to use any preferred platform to write code.

Q1. 
Best Time to Buy and Sell Stock Problem Statement
Given an array prices representing the prices of a stock where each element indicates the price at a given minute, determine the maximum profit you can ac...read more
Ans. 
Find the maximum profit by buying and selling a stock once based on given prices.
• Iterate through the prices array and keep track of the minimum price seen so far and the maximum profit achievable.

• Calculate the profit by subtracting the current price from the minimum price and update the maximum profit if needed.

• Return the maximum profit, ensuring it is not negative.

• Example: prices = [2, 100, 150, 120], Buy at 2, sell a
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Round duration - 60 Minutes
Round difficulty - Medium

Q1. 
Dance Team Pairing Challenge
Imagine you are helping Ninja, a dance coach, who needs to form dance pairs from the available boys and girls in a studio. Given the number of boys N, the number of girls M, a...read more
Ans. 
The challenge involves forming dance pairs from available boys and girls based on potential pairings to maximize the number of pairs.
• Parse the input to get the number of test cases, boys, girls, and potential pairings.

• Iterate through the potential pairings and form pairs based on the given indexes.

• Output '1' if a set of maximum possible pairs is returned, else output '0'.

• There can be multiple valid configurations of pa...read more
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Q2. What is the difference between multiprocessing and multithreading?
Ans. 
Multiprocessing involves multiple processes running concurrently, while multithreading involves multiple threads within a single process.
• Multiprocessing utilizes multiple processes to execute tasks simultaneously.

• Multithreading involves multiple threads within a single process sharing the same memory space.

• Multiprocessing is typically used for CPU-bound tasks, while multithreading is more suitable for I/O-bound tasks.

• E...read more
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Round duration - 60 Minutes
Round difficulty - Hard

Q1. Can you describe the classes and functions involved in the design of a system like Splitwise?
Ans. 
Splitwise is a system for managing shared expenses among groups of people.
• Classes: User, Expense, Group

• Functions: addExpense(), settleUp(), calculateBalance()
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Round duration - 60 Minutes
Round difficulty - Hard

They asked you to reverse a palidrome

Q1. Asked everything that was present in my resume
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Q2. DBMS, OOps were asked a lot and react as well
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Q1. Types of garbage collectors
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Q1. Salary negotiation
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60 mins and basic quants-based questions along with SQL

Q1. Multi-Threading in Python - GIL
Ans. 
Global Interpreter Lock (GIL) in Python restricts execution of multiple threads at once to prevent race conditions.
• GIL is a mutex that protects access to Python objects, preventing multiple threads from executing Python bytecodes at once.

• This means that even in a multi-threaded Python program, only one thread can execute Python code at a time.

• GIL can limit the performance of multi-threaded Python programs, especially f...read more
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Q2. Certifications in my resume - AWS and Ethical Hacking
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Tell me about a time where you resolve a conflict

Reverse a string, identify anagram

70 minutes test, and 4 questions

Q1. Behavioural Queston
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