Walmart Senior Automation Engineer Interview Questions and Answers

Arrays , Strings Basic Data Structures

DSA medium and Java Coding Questions

Frontend coding questions in Js and React js

Q1. What are Hooks and life cycle in React
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Q2. Behavioural questions like leadership etc
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Q1. Salary Expectations
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Q2. Company Values and Mission
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Q1. React js questions like Dom manipulation, useCallback and useMemo these kind of questions
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Q2. Create some dynamic buttons with a json data and whenever you click on that you need to maintain active and inactive states and also you need to show the content of the button based on the json data whenev...read more
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Create dynamic buttons with JSON data, maintain active/inactive states, and show content on click
• Create buttons dynamically using JSON data

• Toggle between active and inactive states on click

• Display button content based on JSON data on click
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Q1. More advanced react based questions like test cases handling and redux state management techniques
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Q2. Prop drilling concepts
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Q1. More about your projects you have worked on and also front end technical basic questions
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Q1. Why Lowe's only
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Lowe's is a leading home improvement retailer with a strong focus on technology and innovation.
• Lowe's has a strong reputation for investing in technology and innovation within the home improvement industry.

• I am impressed by Lowe's commitment to digital transformation and their use of cutting-edge tools and technologies.

• I believe Lowe's offers a challenging and rewarding environment for software engineers to grow and de...read more
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Q2. What are your expectations here nd all
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I expect a challenging work environment, opportunities for growth, and a supportive team.
• Challenging work that allows me to utilize my skills and learn new technologies

• Opportunities for career advancement and professional development

• A supportive team that fosters collaboration and growth

• Clear communication and expectations from management
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Q1. Delete a node from a bst
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To delete a node from a binary search tree (BST), we need to handle three cases: node has no children, node has one child, and node has two children.
• Start at the root and traverse the tree to find the node to be deleted.

• Handle the three cases: node has no children, node has one child, and node has two children.

• For a node with two children, find the inorder successor (smallest node in the right subtree) to replace the n
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Q2. DP based question
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Q1. Immutable Class, Remove duplicates from string using java 8
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Immutable class, remove duplicates from string using Java 8
• Create an immutable class to represent the string

• Use Java 8 streams to remove duplicates from the string

• Convert the string to a character array, use distinct() and collect() to remove duplicates
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Q2. Sealed classes in java
Ans. 
Sealed classes in Java restrict inheritance to a predefined set of subclasses.
• Sealed classes were introduced in Java 15 to restrict inheritance to a predefined set of subclasses.

• Subclasses of a sealed class must be declared in the same file as the sealed class.

• Sealed classes are declared using the 'sealed' modifier before the 'class' keyword.

• Example: sealed class Shape permits Circle, Square, Triangle;
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Q1. Fallout Mechanism between the microservices
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Fallout mechanism between microservices refers to how failures in one microservice can impact other microservices.
• Fallout can occur due to cascading failures when one microservice depends on another.

• Implementing circuit breakers can help prevent fallout by isolating failures.

• Monitoring and alerting systems are crucial for detecting and responding to fallout.

• Using asynchronous communication can reduce the impact of fall...read more
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