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I applied via Naukri.com and was interviewed before May 2020. There were 3 interview rounds.
I applied via Naukri.com and was interviewed in May 2024. There was 1 interview round.
OOPs concepts in Java are the fundamental principles of object-oriented programming, including inheritance, encapsulation, polymorphism, and abstraction.
Inheritance: Allows a class to inherit properties and behavior from another class.
Encapsulation: Bundling data and methods that operate on the data into a single unit.
Polymorphism: Ability to present the same interface for different data types.
Abstraction: Hiding the i...
HashMap is a data structure that stores key-value pairs and uses hashing to quickly retrieve values based on keys.
HashMap internally uses an array of linked lists to store key-value pairs.
When a key-value pair is added, the key is hashed to determine the index in the array where the pair will be stored.
If multiple keys hash to the same index, a linked list is used to handle collisions.
To retrieve a value, the key is ha...
I applied via Campus Placement and was interviewed before Oct 2022. There were 2 interview rounds.
There will be some aptitude and core based questions
Top trending discussions
I applied via Naukri.com and was interviewed in Oct 2024. There were 3 interview rounds.
Online zoom coding test will be there - 4 questions - 2 about output of code & 2 about technical questions.
Polymorphism is the ability of a single function or method to operate on different types of data.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
Virtual polymorphism is achieved through virtual functions in C++.
Virtual functions allow a function in a base class to be overridden in a derived class.
Example: Animal class with virtual function 'makeSound' overridden in Dog a
Virtual polymorphism allows objects of different classes to be treated as objects of a common superclass.
Create a base class with virtual functions
Create derived classes that override the virtual functions
Use pointers or references of the base class to call the overridden functions
Hackearth online coding test for 1 hour
Use sorting or heap data structure to find k largest elements in an array of strings.
Sort the array in descending order and return the first k elements.
Use a max heap data structure to efficiently find the k largest elements.
Examples: ['apple', 'banana', 'orange', 'kiwi'], k=2 -> ['orange', 'kiwi']
Remove duplicates from array of strings
Create a Set to store unique strings
Iterate through the array and add each string to the Set
Convert the Set back to an array to get the unique strings
I applied via Naukri.com and was interviewed in Nov 2024. There were 3 interview rounds.
Coding round is related to DSA
Technology advantage or not
All aptitude topics,logical reasoning
posted on 4 Nov 2024
I applied via Approached by Company and was interviewed in Jun 2024. There were 3 interview rounds.
Design a RESTful API for CRUD operations on user resources.
Use HTTP methods like GET, POST, PUT, DELETE for CRUD operations
Create endpoints like /users for listing all users, /users/{id} for specific user
Use status codes like 200 for success, 404 for not found, 400 for bad request
Implement authentication and authorization mechanisms for security
Include request and response body formats like JSON or XML
OOPS stands for Object-Oriented Programming System. It is a programming paradigm based on the concept of objects.
OOPS focuses on creating objects that contain data and methods to manipulate that data.
It allows for encapsulation, inheritance, and polymorphism.
Examples of OOPS languages include Java, C++, and Python.
Dependency Injection is a design pattern where components are given their dependencies rather than creating them internally.
Allows for easier testing by mocking dependencies
Promotes loose coupling between components
Improves code reusability and maintainability
Example: Constructor injection, Setter injection
Normalization in SQL is the process of organizing data in a database to reduce redundancy and improve data integrity.
Normalization involves breaking down a table into smaller tables and defining relationships between them.
It helps in reducing data redundancy by storing data in a structured manner.
There are different normal forms like 1NF, 2NF, 3NF, and BCNF that define the level of normalization.
Example: If we have a t...
posted on 18 Sep 2024
I applied via Shine and was interviewed in Aug 2024. There were 2 interview rounds.
Normal coding round with simple oa complexity
based on 7 reviews
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