Lloyds Technology Centre Backend Developer Interview Questions and Answers

Q1. How to reverse a linked list in o(N)
Ans. 
Reversing a linked list in O(N) involves iterating through the list and reversing the pointers of each node.
• Initialize three pointers: prev (null), current (head), and next (null).

• Iterate through the linked list until current is null.

• In each iteration, store the next node: next = current.next.

• Reverse the current node's pointer: current.next = prev.

• Move prev and current one step forward: prev = current; current = next.

• O...read more
Answered by AI
Add your answer
Q2. Check whether string is palindrome or not in o(logn)
Add your answer

Q1. Multithreading concepts collection
Add your answer

Q1. Spring core, jpa , Microservices
Add your answer

Round duration - 90 Minutes
Round difficulty - Medium

Round duration - 60 Minutes
Round difficulty - Medium

Q1. 
Validate Binary Search Tree Problem Statement
Your task is to determine if a given binary tree with 'N' nodes is a valid Binary Search Tree (BST). A BST is defined by the following properties:
• The lef...read more
Ans. 
Validate if a given binary tree is a valid Binary Search Tree (BST) based on its properties.
• Check if the left subtree of a node has only nodes with data less than the node's data.

• Verify if the right subtree of a node has only nodes with data greater than the node's data.

• Ensure that both the left and right subtrees are also binary search trees.

• Implement a validation function for a BST.

• Output 'true' if the binary tree is...read more
Answered by AI
Add your answer

Round duration - 60 Minutes
Round difficulty - Easy

Q1. Java questions , stream api
Add your answer
Q2. Whatever you have mention in resume
Add your answer

Q1. I was asked medium level leetcode questions. So if you have good command and can do basic-medium questions, then you are good to go.
Add your answer

It's their home assignment you need to make it in whatever tech stack you want to make and then interview happens on the basis of this and improvements and questions are asked around it.

Q1. How are you today
Add your answer
Q2. What's the weather today
Ans. 
The weather today is sunny with a few clouds and a high of 75 degrees.
• Sunny weather with some clouds

• High temperature of 75 degrees

• Possibility of rain later in the day
Answered by AI
Add your answer
Q3. Why do you want to join
Ans. 
I am passionate about creating innovative software solutions and believe your company aligns with my values and goals.
• Passionate about software development

• Believe company aligns with values and goals
Answered by AI
Add your answer
Q4. What values do you have
Ans. 
I value continuous learning, collaboration, innovation, and integrity in my work as a software developer.
• Continuous learning: I believe in staying updated with the latest technologies and trends in the industry.

• Collaboration: I value working in a team and sharing knowledge and ideas with my colleagues.

• Innovation: I strive to find creative solutions to problems and improve processes.

• Integrity: I believe in honesty, tran...read more
Answered by AI
Add your answer
Q5. What do you like more, array or list
Ans. 
I prefer arrays for their fixed size and faster access, but lists for their flexibility and ease of manipulation.
• Arrays are preferred for their fixed size and faster access time, especially when random access is required.

• Lists are more flexible and easier to manipulate, especially when elements need to be added or removed frequently.

• Arrays are typically used when the size of the collection is known beforehand, while li...read more
Answered by AI
Add your answer

Q1. What are hooks, event loop usecontext api
Add your answer
Q2. What is aggregator
Ans. 
An aggregator is a system or service that collects and organizes data from multiple sources into a unified view.
• Aggregators can be used in various domains, such as news, e-commerce, and data analysis.

• Example: News aggregators like Google News compile articles from different news sources.

• In e-commerce, price aggregators compare prices from various retailers to help consumers find the best deals.

• Data aggregators collect ...read more
Answered by AI
Add your answer