INDMoney Senior Software Engineer Interview Questions and Answers

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. Reverse a string
Ans. 
Reverse a string by iterating through the characters and swapping them
• Create a function that takes a string as input

• Initialize two pointers, one at the beginning and one at the end of the string

• Swap the characters at the two pointers and move them towards the center until they meet
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Q2. 2 sum arrays problem
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Q1. Project discussions
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Q2. Cv discussion was held
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Q1. Given a code snippet, do code review and provide all the improvements. Mainly they look at how well you can catch the logical errors over minor improvements
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Q1. Code review, clean coding, design
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Medium level leet code questions

Q1. Low Leven system design of Instagram.
Ans. 
Low level system design of Instagram involves designing the core components like database, storage, caching, and networking.
• Use sharding to distribute data across multiple database servers for scalability.

• Implement a caching layer using Redis or Memcached to improve performance.

• Utilize a content delivery network (CDN) for faster content delivery to users.

• Design a fault-tolerant storage system to ensure data durability ...read more
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Q1. Creating a high level design of a message queue system
Ans. 
Designing a message queue system for efficient communication between components
• Define the requirements and constraints of the system

• Choose a suitable messaging protocol (e.g. AMQP, MQTT)

• Design the message format and structure

• Implement mechanisms for message persistence and delivery guarantees

• Consider scalability and fault tolerance

• Use appropriate data structures and algorithms for efficient message handling
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Q1. What are your goals ?
Ans. 
My goal is to continuously improve my technical skills, contribute to impactful projects, and eventually move into a leadership role.
• Continuously improve technical skills through learning new technologies and best practices

• Contribute to impactful projects by delivering high-quality code and solutions

• Work towards moving into a leadership role by taking on more responsibilities and mentoring junior team members
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Q2. Why you choose jupiter
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I chose Jupiter because of its strong gravitational pull and potential for scientific exploration.
• Jupiter's large size and mass make it a key player in shaping the solar system

• Its strong magnetic field and radiation belts provide valuable insights for space research

• Jupiter's moons, like Europa and Io, offer unique environments for potential exploration missions
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Q1. Next Greater Element in an array
Ans. 
Find the next greater element in an array for each element
• Iterate through the array and for each element, find the next greater element

• Use a stack to keep track of elements whose next greater element is not yet found

• If the current element is greater than the top element of the stack, pop the stack and mark the popped element's next greater element as the current element

• Push the current element onto the stack

• If there ar...read more
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Q2. Question based on Sql inner join
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Q1. Abstract and interface difference
Ans. 
Abstract classes are classes that cannot be instantiated and can have both abstract and non-abstract methods. Interfaces are a collection of abstract methods.
• Abstract classes can have constructors, interfaces cannot

• A class can implement multiple interfaces, but can only inherit from one abstract class

• Interfaces can be used to achieve multiple inheritance in Java

• Abstract classes can have instance variables, interfaces c...read more
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Q2. Current project
Ans. 
I am currently working on a project to develop a web-based inventory management system.
• Developing a user-friendly interface for managing inventory

• Implementing database functionality to store and retrieve inventory data

• Integrating with other systems to automate inventory updates

• Creating reports and analytics to track inventory levels and trends
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Sort array without using any inbuilt method?