Groww Associate Product Manager Interview Questions and Answers

Double entry, isin, balance sheet

Q1. Tell me about yourself.
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Round duration - 90 minutes
Round difficulty - Medium

The round consisted of 3 coding Questions and 20 Technical MCQs.

Q1. 
Connect Ropes Problem Statement
Given a number of ropes denoted as 'N' and an array containing the lengths of these ropes, your task is to connect the ropes into one single rope. The cost to connect two r...read more
Ans. 
The task is to find the minimum cost required to connect all the ropes by summing their lengths.
• Iterate through the ropes and connect the two shortest ropes at each step to minimize cost

• Use a priority queue to efficiently find the shortest ropes

• Keep track of the total cost as you connect the ropes

• Example: For input [4, 3, 2, 6], connect 2 and 3 (cost 5), then connect 4 and 5 (cost 9), then connect 9 and 6 (cost 15) for
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Q2. 
Idempotent Matrix Verification
Determine if a given N * N matrix is an idempotent matrix. A matrix is considered idempotent if it satisfies the following condition:
M * M = M
Input:
The first line cont...read more
Ans. 
Check if a given matrix is idempotent by verifying if M * M = M.
• Iterate through the matrix and multiply it with itself to check if it equals the original matrix.

• If the condition M * M = M is satisfied, then the matrix is idempotent.

• If the condition is not satisfied, then the matrix is not idempotent.
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Q3. 
Sum of LCM Problem Statement
Given an integer 'N', calculate and print the sum of the least common multiples (LCM) for each integer from 1 to N with N.
The sum is represented as:
LCM(1, N) + LCM(2, N) + ....read more
Ans. 
Calculate and print the sum of least common multiples (LCM) for each integer from 1 to N with N.
• Iterate from 1 to N and calculate LCM of each number with N

• Add all the calculated LCM values to get the final sum

• Return the sum for each test case
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Round duration - 120 minutes
Round difficulty - Medium

This round is a Long Coding Round. Every Candidate was assigned with a mentor who guides them, We were given a real-life scenario for which we have to construct a database with required tables. We should draw an ER Diagram to demonstrate the Database. After the Database Completion, We have to Start Coding the Application. The Design(like Placing the button or background colour) is not given much importance. They mainly test the practical knowledge of candidates in OOPS and expertise in a C, C++, Java, Android or any other language were OOPS Concepts can be applied.

Round duration - 180 Minutes
Round difficulty - Medium

This Round is a technical Interview. I was asked Questions to test my Technical Knowledge.

Q1. 
Sort 0 1 2 Problem Statement
Given an integer array arr of size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.
Input:
The first line contains an integer 'T' representing the n...read more
Ans. 
Sort an array of 0s, 1s, and 2s in linear time complexity.
• Use three pointers to keep track of 0s, 1s, and 2s while iterating through the array.

• Swap elements based on the values encountered to sort the array in-place.

• Time complexity of the algorithm should be O(N) where N is the size of the array.
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Round duration - 20 Minutes
Round difficulty - Easy

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Basic questions on basic knowledge

Q1. IPO,Capital Market
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Q2. What is tge formula of receivable turnover?
Ans. 
Receivable turnover is a financial ratio that measures a company's efficiency in collecting its accounts receivable.
• Receivable turnover = Net Credit Sales / Average Accounts Receivable

• Net Credit Sales is the total sales made on credit minus any returns or allowances

• Average Accounts Receivable is the average of the beginning and ending accounts receivable balances

• A higher receivable turnover indicates that a company is ...read more
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Q3. What is formula for liquidy ratio?
Ans. 
Liquidity ratio measures a company's ability to pay off its short-term debts using its liquid assets.
• Liquidity ratio is calculated by dividing a company's liquid assets by its short-term liabilities.

• The formula for liquidity ratio is: Liquidity Ratio = (Liquid Assets / Short-term Liabilities)

• Liquid assets include cash, marketable securities, and accounts receivable.

• Short-term liabilities include accounts payable, short...read more
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Q1. What is difference between @primary and @Qualifier?
Ans. 
Primary is used to define a primary bean when multiple beans of the same type are present, while Qualifier is used to specify which bean to autowire when multiple beans of the same type are present.
• Primary annotation is used to give a higher preference to a bean when multiple beans of the same type are present in the Spring application context.

• Qualifier annotation is used to specify which bean to autowire when multiple...read more
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Q2. How we can handle fault tolerance in Microservices?
Ans. 
Fault tolerance in Microservices can be achieved through redundancy, graceful degradation, and circuit breakers.
• Implementing redundancy by having multiple instances of each microservice running to handle failures.

• Using graceful degradation to ensure that the system can still function even if certain microservices are unavailable.

• Utilizing circuit breakers to prevent cascading failures by temporarily stopping requests t
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Q3. How to implement spring security?
Ans. 
Implementing Spring Security involves configuring security settings in the Spring application.
• Add Spring Security dependency in pom.xml

• Configure security settings in SecurityConfig class

• Define user roles and permissions

• Use annotations like @EnableWebSecurity and @Secured
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Q4. Explain OAuth 2 implementation?
Ans. 
OAuth 2 is an authorization framework that allows a third-party application to obtain limited access to an HTTP service.
• OAuth 2 is used for delegated access, allowing a user to grant a third-party application access to their resources without sharing their credentials.

• It involves the use of access tokens, which are issued by the authorization server after the user authenticates and authorizes the application.

• OAuth 2 su...read more
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Q1. Memory management in Java ?
Ans. 
Java uses automatic memory management through garbage collection to allocate and deallocate memory.
• Java uses garbage collection to automatically manage memory by deallocating objects that are no longer needed.

• The JVM has a heap where objects are allocated and garbage collection is performed to reclaim memory.

• Java provides the 'finalize()' method for objects to perform cleanup before they are garbage collected.

• Memory le...read more
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Q2. Different types of gc?
Ans. 
Different types of garbage collection algorithms in software development.
• Mark and Sweep: Identifies and removes unreachable objects.

• Generational: Divides objects into different generations based on age.

• Parallel: Uses multiple threads to perform garbage collection concurrently.

• Incremental: Spreads garbage collection work over multiple cycles to reduce pause times.
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Q3. Difference between executors &executorservice?
Ans. 
Executors are a class that provides factory and utility methods for Executor, ExecutorService is an interface that represents an asynchronous execution service.
• Executors class provides factory and utility methods for Executor interface

• ExecutorService is an interface that represents an asynchronous execution service

• ExecutorService extends Executor interface

• ExecutorService provides methods to manage termination and produ...read more
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Q1. Arraylist find duplicate
Ans. 
Find duplicates in an ArrayList of strings.
• Iterate through the ArrayList and use a HashSet to keep track of seen elements.

• If an element is already in the HashSet, it is a duplicate.

• Store the duplicates in a separate ArrayList or print them directly.
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