Gapblue Interview Questions and Answers

Aptitude test consist of logical reasoning, verbal ability, coding questions.

Q1. Explain oops concepts
Ans. 
OOPs concepts are the 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 complex implementatio...read more
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Q2. Coding qn based on your comfortable language
Ans. 
I am comfortable with Java programming language.
• Use Java to create a program that calculates the factorial of a number.

• Utilize loops to iterate through the numbers and multiply them together.

• Handle edge cases such as negative numbers or zero.

• Consider using recursion for a more efficient solution.
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Q1. Find Missing number
Ans. 
Find the missing number in an array of strings.
• Convert the strings to integers and sort the array

• Iterate through the array to find the missing number

• Return the missing number
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Logical reasoning, verbal reasoning, coding

Q1. What is constructor
Ans. 
A constructor is a special type of method that is automatically called when an object is created in a class.
• Constructors have the same name as the class they are in.

• Constructors can be used to initialize object properties.

• Constructors do not have a return type.

• Example: public class Car { public Car() { // constructor code here } }
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Q2. Sql queries, palindrome program
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