Walmart Senior Software Engineer Interview Questions, Process, and Tips

Q1. 1st round ds algo
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Q2. Find a number in consecutive array
Ans. 
Search for a number in a consecutive array of strings
• Iterate through the array and convert each string to a number

• Check if the numbers are consecutive by comparing with the next number

• Return the number if found, otherwise return a message indicating not found
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I applied for IN4 Position. Totally 4 rounds. 1st round is DS.

Q1. Android Round. Here they validated android application development skills.
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Q1. How OLA application works. How CAB moves on map?
Ans. 
OLA application uses GPS to track cabs on map and assign them to customers based on location and availability.
• OLA application uses GPS technology to track the location of cabs in real-time.

• Customers input their location and destination in the app to request a cab.

• The app matches the customer with the nearest available cab and assigns it to them.

• Customers can track the cab's movement on the map in real-time as it approa
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Q2. How instagram application works. If someone tagged you how you will get notification and how those reels are showing in your profile page...etc.
Ans. 
Instagram uses a notification system to alert users when they are tagged and displays reels on the profile page based on user preferences and algorithms.
• Instagram uses a push notification system to alert users when they are tagged in a post or story.

• Reels are displayed on the profile page based on user engagement, preferences, and algorithms.

• The Explore page also suggests reels to users based on their interests and int
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Q1. Manager Round. All about manegerial discussions.
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Questions on ALgo & DS.

Q1. Questions on Technical
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Q2. Questions on Algo
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Q1. Questions on Algo
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Q1. Salary Discussion
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Tree & linkedlist questions

Q1. About tech stack interview questions
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Hackerrank Test -> OA -> 2 Questions to be solved in 2 Hours

Q1. Data Structures and Algorithms
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Q2. Detect Loop in Graph
Ans. 
Detect if there is a loop in a graph.
• Use Depth First Search (DFS) to traverse the graph.

• If a node is visited twice during DFS, then there is a loop.

• Maintain a visited set to keep track of visited nodes.

• If a node is already in the visited set, then there is a loop.
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Q1. C# .NET Programming
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Q2. C# Basics, .NET, OOPS, CLR
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Q1. System Design of Zomato
Ans. 
Zomato is a food delivery and restaurant discovery platform that connects users with local restaurants.
• Zomato uses a microservices architecture to handle its various functionalities.

• The system is designed to handle a large number of concurrent users and requests.

• Zomato uses a combination of relational and NoSQL databases to store data.

• The platform uses machine learning algorithms to provide personalized recommendations...read more
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Q2. Design HLD and LLD of Zomato
Ans. 
Design HLD and LLD of Zomato
• High-Level Design (HLD) should include the overall architecture of the system, including components and their interactions

• Low-Level Design (LLD) should include detailed design of each component, including data structures, algorithms, and interfaces

• HLD should consider scalability, availability, and fault tolerance

• LLD should consider performance, security, and maintainability

• Example components...read more
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They asked two question
1. Reverse the linked list
2. Print the middle element of linkedlist