EPAM Systems Interview Questions, Process, and Tips

Leetcode medium and hard

Normal basic aptitude

Be confident and speak about new examples .

Q1. Asked dbms, oops, trees , bst
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Q1. Tell me about yourself
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Q2. Puzzle question or story question
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Q1. What is StateHoist?
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StateHoist is a library in Android development used for managing the lifecycle of Android components.
• StateHoist helps in handling configuration changes and other lifecycle events in Android apps.

• It simplifies the process of saving and restoring instance state of activities and fragments.

• StateHoist can be used to retain data across configuration changes, such as screen rotations.

• It provides a convenient way to manage th...read more
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Q2. How does ViewModel work?
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ViewModel is a class that is designed to store and manage UI-related data in a lifecycle conscious way.
• ViewModel survives configuration changes such as screen rotations.

• ViewModel is not destroyed when an activity is destroyed and recreated.

• ViewModel is typically used to hold and manage data for UI components such as activities and fragments.
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Q3. What is SOLID Principle?
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SOLID is a set of five principles in object-oriented programming to make software designs more understandable, flexible, and maintainable.
• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open/Closed Principle: Software entities should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Objects of a superclass should be replaceable with objects of it...read more
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Q1. General RN basic questions including some coding tasks
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Q1. General RN basic questions including some coding tasks
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Q1. OOPS concepts explain
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OOPS concepts are fundamental principles in object-oriented programming that help in organizing and designing code efficiently.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Allowing a class to inherit properties and behavior from another class.

• Polymorphism: Ability of objects to take on multiple forms or behaviors.

• Abstraction: Hiding the complex implementation...read more
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