Zoomcar Senior Software Engineer Interview Questions and Answers

Q1. How does recyclerview works internally ?
Ans. 
RecyclerView is a flexible view for providing a limited window into a large data set.
• RecyclerView recycles views to improve performance and memory usage.

• It uses LayoutManager to organize items in a grid, list, or staggered grid layout.

• Adapter provides data to be displayed in RecyclerView.

• ItemDecoration can be used to add spacing between items or decorations to items.

• ItemAnimator can be used to animate item changes in t
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Q2. Android basics , Live Data , ViewModel, coroutines internal working
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Q1. Fundamentals and Basics of android, projects you are worked on.
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It was sort of pair programming where you will be told to implement some feature. Here they check your coding style, your approach and the architecture you follow.

Q1. Advanced android questions were asked and some scenario based questions.
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Q1. It was managerial round, most discussion were on my projects and past experience.
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Q1. React and redux and more of frnd end
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Q1. It was regarding the tools and technologies we worked on. AWS services we worked on. How deployment happens.
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Q2. What was the project you worked on.
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2 medium - question 1 array and 1 dp
1 med to hard - dynamic programming

Q1. System design LLD - Polling System
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Q2. How to implement Concurrency in it.
Ans. 
Concurrency in software development allows multiple tasks to run simultaneously, improving performance and responsiveness.
• Use multithreading to execute multiple tasks concurrently

• Implement asynchronous programming to handle tasks that may take longer to complete

• Use synchronization techniques like locks and semaphores to manage access to shared resources

• Consider using thread pools to manage and reuse threads efficiently
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Q1. Create APIs for a Quiz platform
Ans. 
Create APIs for a Quiz platform
• Design RESTful APIs for creating, updating, deleting, and retrieving quizzes

• Include endpoints for managing quiz questions, answers, and user responses

• Implement authentication and authorization mechanisms for secure access

• Utilize JSON format for data exchange between client and server
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Design and code a parking lot application

Q1. Past work and digging around that. few changes in past work and how to implement them.
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Q1. How to ensure that there is no data corruption when data is being streamed and processed asynchronously
Ans. 
To ensure no data corruption during asynchronous streaming and processing, use data validation, error handling, and checksums.
• Implement data validation techniques to check the integrity of the streamed data.

• Handle errors and exceptions properly to prevent data corruption.

• Use checksums or hash functions to verify the integrity of the data.

• Implement reliable communication protocols like TCP/IP to ensure data integrity.

• Co...read more
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Hackerrank LeetCode 2 Hard questions and 1 medium