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Devon Software Services
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The problem statement was given to solve.
Liskov Substitution Principle states that objects of a superclass should be replaceable with objects of its subclasses without affecting the program's correctness.
Subtypes must be substitutable for their base types.
Derived classes should be able to extend the functionality of base classes without changing their behavior.
Violating this principle can lead to unexpected behavior in the program.
Example: If a Square class i...
Abstraction is crucial in software development to simplify complexity, improve readability, and promote reusability.
Abstraction helps in hiding unnecessary details and focusing on essential features.
It allows developers to work at a higher level of understanding without getting bogged down in implementation details.
Abstraction promotes code reusability by creating modular and reusable components.
It improves code readab...
Unit testing is crucial in ensuring clean code by verifying the functionality of individual units of code.
Unit testing helps in identifying bugs and errors early in the development process.
It ensures that each unit of code works as expected in isolation.
Unit tests act as documentation for the codebase, making it easier for new developers to understand and modify the code.
It promotes code reusability and maintainability...
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I appeared for an interview in Mar 2021.
My current project involves analyzing customer behavior on our e-commerce platform.
Collecting and cleaning data from various sources
Creating visualizations to identify patterns and trends
Using statistical models to make predictions and recommendations
Collaborating with cross-functional teams to implement changes
Tracking and measuring the impact of changes on customer behavior
I applied via Referral and was interviewed before Feb 2022. There were 3 interview rounds.
General and basic data structure question
Java programs for strings, palindrome, etc.
Use the StringBuilder class to manipulate strings efficiently.
To check if a string is a palindrome, compare it with its reverse.
To count the occurrences of a substring in a string, use the indexOf method in a loop.
To split a string into an array of substrings, use the split method.
I applied via Campus Placement and was interviewed in Sep 2024. There were 3 interview rounds.
Aptitude questions with some basic coding questions
They have given 3 coding questions and some pseudo codings
I applied via Campus Placement and was interviewed before Nov 2023. There were 3 interview rounds.
Mathematical and pseudo code
I applied via Recruitment Consulltant and was interviewed in Dec 2022. There were 2 interview rounds.
Apptitude test is a mathematical reasoning in apptitude test there are many reasonings
It is based on programming on coding test.
I applied via Naukri.com and was interviewed in Jun 2022. There were 3 interview rounds.
I applied via Campus Placement and was interviewed in Jun 2024. There were 2 interview rounds.
It was ok. I was not able to solve all the questions.
To remove the last element from a linked list, iterate to the second last node and update its next pointer to null.
Iterate through the linked list to find the second last node
Update the next pointer of the second last node to null
I applied via Campus Placement
Dsa problems dp and tress problem
I am a passionate software engineer with 5 years of experience in developing web applications using various technologies.
5 years of experience in software development
Proficient in developing web applications
Skilled in using various technologies
Passionate about software engineering
The test was in hackerrank platform, it was moderate level.
based on 1 interview
Interview experience
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