Novopay Solutions SDE Interview Questions and Answers

Q1. What is oops concepts
Ans. 
Object-oriented programming concepts that focus on data encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

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

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

• Abstraction: Hiding the complex implementation detai...read more
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Q1. 1. I was asked to create bst from preorder and inorder 2. Basic OOPs concepts 3. Question on finding the highest profit after selling the stocks
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Q2. 4. Question from projects
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30 min exam online test with easy and medium leetcode questions. Precisely Bulls and Cow problem and remove K digits leetcode questions

Two easy to medium level questions

Q1. Reverse a string
Ans. 
Reverse a string by iterating through the characters and swapping them.
• Create a new string to store the reversed string

• Iterate through the original string from end to start

• Append each character to the new string

• Return the new string as the reversed string
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Q2. First and last occurrence of an element in a sorted array
Ans. 
Find the first and last occurrence of an element in a sorted array.
• Use binary search to find the first occurrence of the element.

• Modify binary search to find the last occurrence of the element.

• Handle cases where the element is not found in the array.
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Q1. Root Cause Analysis
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Q2. Guesstimate Question
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Q1. Product Design Question
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Q2. Metrix Question
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Q1. Aap kiskey relative ya reference ho ?
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Q2. How early you can join ?
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Q1. About you role in previous company and domain knowledge
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Q2. Buttering karini hogi kar sakoge ?
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Aptitude Test with 1 coding question and 8 other aptitude questions

Q1. DSA questions with some dbms questions.
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Q1. DSA + SQL query writing questions. Do revise SQL before interview.
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Aptitude test was of 1 hr

It was about 1 hr duration

Q1. What do you know about oops
Ans. 
Object-oriented programming paradigm focusing on objects and classes
• 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

• Abstraction: Hiding the complex implementation details and showing only the necessary features
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Q2. Tell me about encapsulation
Ans. 
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.
• Encapsulation helps in hiding the internal state of an object and restricting access to it.

• It allows for better control over the data by preventing outside interference.

• Encapsulation also promotes code reusability and modularity.

• Example: In object-oriented programming, classes encapsulate data fields and methods to ope
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Q1. How do you manage your team
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Q2. Why should I hire you
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