Aptagrim Consulting Python Developer Intern Interview Questions and Answers

Oops concepts in Java

• Encapsulation - hiding implementation details

• Inheritance - reusing code and creating parent-child relationships

• Polymorphism - multiple forms of a method or object

• Abstraction - creating abstract classes and interfaces

• Example: Encapsulation - using private variables and public methods

• Example: Inheritance - creating a subclass that inherits from a superclass

• Example: Polymorphism - using method overloa...read more

Altering columns in databases involves modifying the structure of a table by adding, deleting or modifying columns.

• Use ALTER TABLE statement to modify columns

• Add new columns using ADD COLUMN

• Delete columns using DROP COLUMN

• Modify columns using MODIFY COLUMN

• Changing column data type may result in data loss

Reversing a number in Java

• Convert the number to a string

• Use StringBuilder to reverse the string

• Convert the reversed string back to a number

To extract words from a line in Java, split the line using whitespace as delimiter.

• Use the split() method of String class

• Pass the whitespace regex as argument to split() method

• Iterate over the resulting array to get individual words

Developed a web application for tracking personal expenses

• Used HTML, CSS, and JavaScript for front-end development

• Implemented Node.js and MongoDB for back-end functionality

• Included features for adding, categorizing, and analyzing expenses

I actively participate in team building activities and collaborate with colleagues on various initiatives outside of work projects.

• Organizing team lunches or outings to build camaraderie

• Participating in charity events or volunteer work as a team

• Collaborating on internal initiatives such as diversity and inclusion programs

• Attending industry conferences or workshops together

I will explain the reasons for the delay and present a plan to mitigate it.

• Communicate the reasons for the delay clearly and honestly

• Present a plan to mitigate the delay and ensure timely delivery

• Provide regular updates on the progress of the project

• Offer alternative solutions or compromises if necessary

• Ensure that the client understands the impact of the delay on the project

• Maintain a professional and respectful attit

Synchronous means happening at the same time, while asynchronous means not happening at the same time.

• Synchronous operations occur in real-time, while asynchronous operations can be delayed or queued.

• Synchronous operations block the program until they are completed, while asynchronous operations allow the program to continue running.

• Examples of synchronous operations include function calls and loops, while examples of ...read more

CTE and temp table usage in SQL

• Use CTE for recursive queries and complex subqueries

• Use temp tables for large data sets and complex queries

• CTE is more efficient for small data sets

• Temp tables can be indexed for faster performance

• Consider the scope and lifespan of the data when choosing between CTE and temp table