Nykaa Interview Questions, Process, and Tips

Q1. Explain Oops concepts
Ans. 
Oops concepts refer to Object-Oriented Programming principles like 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 implementation detail
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Q2. Reverse of the integer
Ans. 
Reverse the digits of an integer number
• Convert the integer to a string to easily manipulate the digits

• Reverse the string using built-in functions or manually

• Convert the reversed string back to an integer
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String and DP questions

Q1. Design BookMyShow
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Q1. Past challenging projects
Ans. 
Developed a real-time data processing system for a high-traffic e-commerce platform.
• Implemented distributed computing using Apache Kafka and Spark.

• Optimized database queries to handle large volumes of data.

• Designed fault-tolerant architecture to ensure system reliability.

• Collaborated with cross-functional teams to meet project deadlines.
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Q1. Coroutunes kotlin and structured concurrency
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Q2. Generics in kotlin and java interportability with kotlin
Ans. 
Generics in Kotlin and Java can be used interchangeably, but there are some differences in syntax and features.
• Kotlin supports declaration-site variance, while Java supports use-site variance.

• In Kotlin, you can use reified generics with inline functions, which is not possible in Java.

• Kotlin has nullable types by default, while in Java you need to use wildcards for similar behavior.
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Q1. Lifecycle methods of activity
Ans. 
Lifecycle methods of activity are callback methods that allow you to manage the state of an activity throughout its lifecycle.
• onCreate() - called when the activity is first created

• onStart() - called when the activity is becoming visible to the user

• onResume() - called when the activity will start interacting with the user

• onPause() - called when the activity is going into the background, but is still visible

• onStop() - ca...read more
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Q2. What is inline function
Ans. 
An inline function is a function that is expanded in place at the point of call, rather than being called as a separate function.
• Inline functions are typically used for small, frequently called functions to reduce the overhead of function calls.

• They are defined with the 'inline' keyword in C++.

• Inline functions can improve performance by avoiding the overhead of function call stack operations.

• Example: inline int square(
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Q1. Lifecycle methods of activity
Ans. 
Lifecycle methods of activity are used to manage the state of an activity throughout its lifecycle.
• onCreate() - called when the activity is first created

• onStart() - called when the activity is becoming visible to the user

• onResume() - called when the activity will start interacting with the user

• onPause() - called when the activity is going into the background, but still visible

• onStop() - called when the activity is no l...read more
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Q2. Inline function
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