Walmart Sdet Engineer Interview Questions and Answers

Q1. Linked List Intersection Point
Ans. 
Find the intersection point of two linked lists.
• Use two pointers to traverse the linked lists

• Calculate the difference in length between the two lists

• Move the pointer of the longer list ahead by the difference

• Move both pointers simultaneously until they meet at the intersection point
Answered by AI
Add your answer
Q2. Basic Spring Boot
Add your answer
Q3. Stream and Java 8 Questions
Add your answer

I like to choose topics java, c, python, html etc

About java, python, c, c++, html and about coding language

Hoe to built skill discussion about problem and how solve it

Q1. React js questions like Dom manipulation, useCallback and useMemo these kind of questions
Add your answer
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
Ans. 
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
Answered by AI
Add your answer

Q1. More advanced react based questions like test cases handling and redux state management techniques
Add your answer
Q2. Prop drilling concepts
Add your answer

Q1. More about your projects you have worked on and also front end technical basic questions
Add your answer

Q1. Why Lowe's only
Ans. 
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
Answered by AI
Add your answer
Q2. What are your expectations here nd all
Ans. 
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
Answered by AI
Add your answer

Q1. Delete a node from a bst
Ans. 
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
Answered by AI
Add your answer
Q2. DP based question
Add your answer

Arrays , Strings Basic Data Structures

Q1. Questions about JavaScript and React
Add your answer

Usually they judge on basis of your behaviour and attitude.

Q1. Discussion about the CTC
Add your answer

Q1. What is the difference between virtual and real DOM?
Ans. 
Virtual DOM is a lightweight copy of the real DOM, used for efficient updates.
• Real DOM updates are slow and expensive, while virtual DOM updates are fast and efficient.

• Virtual DOM is used in React to update the UI without reloading the entire page.

• Real DOM is the actual HTML document, while virtual DOM is a JavaScript object.

• Virtual DOM compares the previous and current states of the UI to determine the minimum number ...read more
Answered by AI
Add your answer
Q2. What is the difference between var, let and const?
Ans. 
var is function scoped, let and const are block scoped. var can be redeclared and reassigned, let can be reassigned but not redeclared, const cannot be reassigned or redeclared.
• var is hoisted to the top of the function, let and const are not

• var can be redeclared within the same scope, let and const cannot

• let and const have a temporal dead zone where they cannot be accessed before they are declared

• const cannot be reassi...read more
Answered by AI
Add your answer

Q1. Optimization techniques in React.
Ans. 
Optimization techniques in React include code splitting, lazy loading, and memoization.
• Code splitting: breaking down the code into smaller chunks to reduce load time.

• Lazy loading: loading components only when they are needed, reducing initial load time.

• Memoization: caching the results of expensive function calls to improve performance.

• Using shouldComponentUpdate to prevent unnecessary re-renders.

• Using React.PureCompone...read more
Answered by AI
Add your answer
Q2. All about flexbox modal in CSS.
Add your answer

Q1. Agile methodology and your previous projects
Ans. 
I have experience working with Agile methodology in my previous projects.
• I have worked in Scrum and Kanban frameworks.

• I have experience in conducting daily stand-up meetings, sprint planning, and retrospectives.

• I have worked in cross-functional teams and have experience in collaborating with product owners and stakeholders.

• I have used tools like Jira and Trello to manage tasks and track progress.

• In one of my previous p...read more
Answered by AI
Add your answer