Lulu International Shopping Mall Buyer Interview Questions and Answers

Q1. How would you calculate per week sell-thru?
Ans. 
Per week sell-thru can be calculated by dividing the total units sold by the total units available for sale and multiplying by 100.
• Calculate total units sold in a week

• Calculate total units available for sale in a week

• Divide total units sold by total units available for sale and multiply by 100 to get sell-thru percentage
Answered by AI
Add your answer
Q2. How to calculate margin in a product?
Ans. 
Margin in a product can be calculated by subtracting the cost of goods sold from the selling price.
• Calculate the cost of goods sold (COGS) by adding up all the costs directly associated with producing the product.

• Determine the selling price of the product.

• Subtract the COGS from the selling price to get the margin.

• Margin = Selling Price - Cost of Goods Sold

• For example, if a product sells for $100 and the COGS is $60, th
Answered by AI
Add your answer

Q1. Write design for URL sortner
Ans. 
Design a URL shortener system
• Use a unique identifier for each long URL to generate a short URL

• Store the mapping of short URL to long URL in a database

• Implement a redirect mechanism to redirect short URLs to their corresponding long URLs

• Consider scalability and performance while designing the system
Answered by AI
Add your answer
Q2. Program to detect cycle on linked list
Ans. 
Use Floyd's Tortoise and Hare algorithm to detect cycle in a linked list.
• Initialize two pointers, slow and fast, at the head of the linked list.

• Move slow pointer by one step and fast pointer by two steps.

• If they meet at any point, there is a cycle in the linked list.
Answered by AI
Add your answer

Mostly dynamic programming and tree based programs

Q1. Coding Coordinate geometry problem
Add your answer
Q2. Coding on trees
Add your answer

Q1. HLD / LLD , Java technical questions
Add your answer
Q2. Pair programming
Add your answer

Q1. Asked about resume and then some questions on Linkedlist, Stack
Add your answer
Q2. Java garbage collection
Add your answer
Q3. What is Bean in Spring
Ans. 
A bean in Spring is a Java object that is instantiated, assembled, and managed by the Spring IoC container.
• Beans are defined in the Spring configuration file using XML or annotations.

• Beans are singleton by default but can be configured as prototype.

• Beans can have dependencies injected by the container.

• Example: @Component annotation in Spring creates a bean.

• Example:
Answered by AI
Add your answer

Q1. Binary search and tree
Add your answer
Q2. Discussion on project
Add your answer

Java-based coding, streams and lambda, design patterns