Application Development Associate Interview Questions and Answers for Freshers

Create a program to find the sum of even and odd digits in an integer.

• Iterate through each digit of the integer and check if it is even or odd

• Keep track of the sum of even digits and odd digits separately

• Print the sums of even and odd digits at the end

Evaluate postfix expressions by applying operators after operands. Return result modulo (10^9+7).

• Read the postfix expression from input

• Use a stack to store operands and apply operators

• Perform modular division when necessary

• Output the final result for each test case

Find duplicate elements in an array

• Iterate through the array and compare each element with all other elements

• If a match is found, add it to a separate array

• Return the array of duplicate elements

Encapsulation is the process of hiding implementation details and restricting access to an object's properties and methods.

• Encapsulation helps in achieving data abstraction and security.

• It allows for better control over the data and prevents unauthorized access.

• Encapsulation is implemented using access modifiers such as public, private, and protected.

• For example, a bank account class may have private variables for account number and balance, and public methods for deposit and...read more

AWS provides a wide range of services including compute, storage, database, networking, analytics, machine learning, and more.

• Compute services: EC2, Lambda, Elastic Beanstalk

• Storage services: S3, EBS, Glacier

• Database services: RDS, DynamoDB, Redshift

• Networking services: VPC, Direct Connect, Route 53

• Analytics services: Athena, EMR, Kinesis

• Machine Learning services: SageMaker, Rekognition, Polly

• Other services: IoT, Security, Management Tools

• AWS also offers a marketplace for thi...read more

Object-oriented programming paradigm that focuses on objects and classes for code organization and reusability.

• Encapsulation: Bundling data and methods that operate on the data into a single unit (object)

• Inheritance: Ability of a class to inherit properties and behavior from another class

• Polymorphism: Ability to present the same interface for different data types