Bounteous x Accolite Senior Software Engineer L3 Interview Questions and Answers

Q1. What is the internal working of a hashmap?
Ans. 
A hashmap is a data structure that stores key-value pairs and uses a hash function to map keys to their corresponding values.
• Hashmap uses a hash function to determine the index of the key-value pair in the underlying array.

• Collisions can occur when two keys hash to the same index, which is resolved using techniques like chaining or open addressing.

• Hashmap typically has an underlying array where each element is a linked...read more
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Q2. Design a Least Recently Used (LRU) cache.
Ans. 
LRU cache is a data structure that stores the most recently used items and removes the least recently used items when full.
• Use a doubly linked list to keep track of the order of items based on their usage.

• Use a hashmap to quickly access items in the cache.

• When an item is accessed, move it to the front of the linked list to mark it as the most recently used.
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Q1. What are the SOLID principles in software engineering?
Ans. 
SOLID principles are a set of five design principles in object-oriented programming to make software designs more understandable, flexible, and maintainable.
• Single Responsibility Principle (SRP) - A class should have only one reason to change.

• Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modification.

• Liskov Substitution Principle (LSP) - Objects of a superclass should be re...read more
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Q2. What design patterns have you worked with?
Ans. 
I have worked with design patterns such as Singleton, Factory, Observer, and Strategy.
• Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Factory pattern creates objects without specifying the exact class of object that will be created.

• Observer pattern defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified a...read more
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Prepare well with basic and advanced JavaScript concepts and logical questions. They will ask you to implement all the topics using code.

Q1. Explain your previous project and work experience.
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Q2. Provided a use case to demonstrate your front-end skills and system design knowledge.
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Q1. Questions related to domain related.
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Q1. Salary discussion.
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Q1. About Self introduction and Core Functions of experiences
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Q2. Deep dive into Technologies what we have worked so far
Ans. 
I have worked with a variety of technologies including Java, Python, SQL, AWS, Docker, and Kubernetes.
• Java

• Python

• SQL

• AWS

• Docker

• Kubernetes
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Q1. Ability to handle the product
Ans. 
I have extensive experience in handling complex software products and have successfully led teams to deliver high-quality solutions.
• Led a team to successfully launch a new product feature within tight deadlines

• Managed the development of a large-scale software product from conception to release

• Collaborated with cross-functional teams to ensure product requirements were met

• Implemented agile methodologies to improve produ
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Q2. Customer or client interaction and project evaluations
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Q1. About Complete personal traits
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Q2. Compensation and Willingness
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An online coding test at coderByte. Medium level question.

Q1. Find sum of distinct elements from two given array.
Ans. 
Sum of distinct elements from two arrays
• Create a set to store distinct elements from both arrays

• Iterate through each array and add elements to the set

• Calculate the sum of elements in the set
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Q2. Discussion around Java,Spring-boot.
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Coding + Aptitude question

Q1. Basic of programming lang.
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Q2. DSA and Oop concepts questions.
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Q1. Difference between composition and aggregation
Ans. 
Composition is a strong relationship where the child object does not exist independently of the parent object, while aggregation is a weak relationship where the child object can exist independently of the parent object.
• Composition is a 'has-a' relationship, where the child object is part of the parent object.

• Aggregation is a 'has-a' relationship, where the child object is not part of the parent object and can exist in...read more
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Q1. Basic of java to advanced
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Q2. Array related questions
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Q1. Architecture related
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Q2. Management roles
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DSA questions and programming concepts

Q1. Reverse string and optimize it
Ans. 
Reverse array of strings efficiently
• Use two pointers approach to swap characters from start and end of each string

• Optimize by using in-place reversal instead of creating new strings

• Consider edge cases like empty strings or strings with only one character
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Q2. Reverse binary tree
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Q1. Salary expectations
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Q2. Joining location
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