Meesho SDE-2 Interview Questions and Answers

I don't remember the ques

Q1. System design of notification system
Ans. 
Design a scalable notification system for sending real-time alerts to users.
• Use a distributed system to handle high volume of notifications.

• Implement message queues for asynchronous processing.

• Utilize push notifications for mobile devices.

• Include a user preference system for customizing notification settings.

• Consider implementing a notification history feature for users to view past alerts.
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Q1. System design of google pay
Ans. 
Google Pay is a digital wallet platform and online payment system developed by Google.
• Google Pay uses secure tokenization to protect user's payment information.

• It integrates with various payment methods like credit/debit cards, UPI, and NFC.

• The system handles transactions, user authentication, and merchant integrations.

• Google Pay leverages Google's infrastructure for scalability and reliability.

• It provides features lik
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It was a leetcode medium, related BFS,

Q1. Basic of android like fragment activity communication
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Q2. Why ViewModel is necessary, how does it save state
Ans. 
ViewModel is necessary in Android development to save and manage UI-related data during configuration changes.
• ViewModel helps in retaining data during configuration changes like screen rotations

• It separates UI-related data from UI controller (Activity/Fragment)

• ViewModel survives configuration changes and can be shared between fragments

• It helps in maintaining data consistency and prevents memory leaks

• ViewModel is lifecy...read more
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Round duration - 60 Minutes
Round difficulty - Medium

Timing was around 11 am
Environment was great, it intrigued me to join Blinkit.

Q1. 
Pair Sum Problem Statement
You are given an integer array 'ARR' of size 'N' and an integer 'S'. Your task is to find and return a list of all pairs of elements where each sum of a pair equals 'S'.
Note:
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Round duration - 60 Minutes
Round difficulty - Medium

Timing 11 am
Interviewer had good knowledge

Q1. Can you explain the activity lifecycle in Android development?
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Q2. Can you explain the fragment lifecycle in Android development?
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Q3. Can you explain the MVVM pattern?
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Round duration - 30 Minutes
Round difficulty - Easy

This round is cultural fit round

Q1. What is clousers
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Q2. What is promises
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Q1. Explain javascript architecture
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Q2. What is mvvm architecture
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Java interview question,coding problems,

Q1. Medium level problem solving questions were asked which was basically related to string and arrays, DS
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Leetcode medium to hard

Q1. Database designing
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Q2. OOPS principals in Java
Ans. 
OOPS principles in Java refer to concepts like inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class. Example: class B extends class A.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: private variables with public getter and setter methods.

• Polymorphism: Ability to present the same interfac...read more
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