Instant Systems Intern 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...read more
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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

Q1. They asked specific questions about the industry i would be focused on
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Q1. How do you handle complex valuation metrics for technology companies
Ans. 
I analyze various factors such as revenue growth, market share, competitive landscape, and future prospects to determine the valuation of technology companies.
• I research and analyze financial statements, industry reports, and market trends.

• I consider the company's revenue growth, market share, and competitive landscape.

• I evaluate the company's future prospects and potential for innovation.

• I use various valuation method...read more
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Q1. Previous work experience. What do you know about hedge funds and private equity funds
Ans. 
Hedge funds and private equity funds are alternative investment vehicles that pool capital from accredited investors to invest in various assets.
• Hedge funds are typically more actively managed and use various strategies to generate returns, such as long/short equity, event-driven, and macro.

• Private equity funds invest in private companies and aim to improve their operations and profitability before selling them for a p...read more
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Q2. Explain about water fall method
Ans. 
Waterfall method is a linear sequential approach to software development.
• It follows a sequential process where each phase must be completed before moving on to the next.

• It is a rigid and inflexible approach.

• It is suitable for projects with well-defined requirements and a fixed scope.

• Examples of industries that use this method are construction and manufacturing.

• Phases include requirements gathering, design, implementati...read more
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Q1. Sql DML,DQL, TCL, etc, operations
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Q1. Constraints in SQL, knowledge on Eagle etc
Ans. 
Constraints in SQL and knowledge on Eagle
• SQL constraints ensure data integrity by enforcing rules on data

• Eagle is a PCB design software used for creating circuit boards

• Knowledge on Eagle includes schematic capture, board layout, and design rule checks
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Q1. Some other discussions like previous companies what we have worked and salary packages.
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Q1. What is Derivative
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Q2. Corporate Actions - Mandatory and Voluntary
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Q3. Difference between hedge funds and mutual funds
Ans. 
Hedge funds are private investment funds with flexible strategies, while mutual funds are publicly offered and regulated investment vehicles.
• Hedge funds typically require high minimum investments, often $1 million or more, while mutual funds can be accessed with lower amounts, sometimes as low as $100.

• Hedge funds employ diverse strategies, including short selling and leverage, whereas mutual funds generally invest in s...read more
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Q4. What is CDS - OTC derivatives
Ans. 
CDS (Credit Default Swap) is a financial derivative used to transfer credit risk of an underlying asset in OTC markets.
• CDS allows investors to hedge against the risk of default on debt instruments.

• Example: A bank buys a CDS to protect against a corporate bond default.

• CDS contracts are traded over-the-counter (OTC), not on exchanges.

• They can be used for speculation, allowing investors to bet on creditworthiness.

• The buye...read more
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Q5. Equities and fixed income
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2 coding questions based on DSA.

Q1. Easy coding problem.
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Q2. Medium coding problem.
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Q1. The interview emphasized team collaboration and work ethics, with a particular focus on my overall work experience at my previous company.
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Q2. What were your preferences regarding work locations, specifically your views on working from the office (WFO) compared to working from home (WFH)?
Ans. 
I prefer a mix of both working from the office and working from home.
• I believe in the benefits of face-to-face collaboration and communication that come with working from the office.

• At the same time, I appreciate the flexibility and productivity that working from home offers.

• I think a hybrid approach, where employees have the option to choose between WFO and WFH based on their tasks and preferences, is ideal.

• I have exp...read more
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Q1. Focus was on DS algo and scenario based coding questions
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Q2. Design skills and OS knowledge
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