Nuchange Informatics Front end Developer Interview Questions and Answers

Dsa with medium leetcode questions

Q1. Lru cache with optimisation
Ans. 
Implementing an LRU cache with optimization techniques for efficient data storage and retrieval.
• Use a doubly linked list to keep track of the most recently used items

• Implement a hash map for fast lookups and updates

• Optimize by using a combination of both data structures for efficient cache management
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Q1. Design url shortener
Ans. 
Design a URL shortener system
• Generate a unique short code for each long URL

• Store the mapping between short code and long URL in a database

• Redirect users from short URL to original long URL
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Q1. Describe your professional background
Ans. 
I have over 5 years of experience in software development, specializing in web applications and agile methodologies.
• Developed a full-stack web application using React and Node.js for an e-commerce platform, improving user engagement by 30%.

• Led a team of 4 developers in an agile environment, successfully delivering projects on time and within budget.

• Implemented RESTful APIs that enhanced data retrieval speed by 25%, opt...read more
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Q2. What is your ideal job
Ans. 
My ideal job is one that fosters creativity, collaboration, and continuous learning while making a positive impact through technology.
• A collaborative environment where team members share ideas and support each other, like in Agile development teams.

• Opportunities for continuous learning, such as attending workshops or conferences to stay updated on the latest technologies.

• Projects that have a meaningful impact, like dev...read more
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Q1. Can you describe a time when you led a team?
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Q2. How do you motivate and inspire team members
Ans. 
I motivate team members by fostering collaboration, recognizing achievements, and encouraging personal growth.
• Encourage open communication: Create an environment where team members feel comfortable sharing ideas and feedback.

• Recognize achievements: Celebrate both small wins and major milestones to boost morale and motivation.

• Set clear goals: Help team members understand their roles and how they contribute to the larger...read more
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Had 50 qsns in 45 min

Had 5 qsns to execute topics like tress and graphs

Q1. Sql queries and how to extract the data
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Q2. Oops concepts and their execution
Ans. 
Oops concepts are fundamental principles of object-oriented programming that help in organizing and designing code efficiently.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Allowing a class to inherit properties and behavior from another class.

• Polymorphism: Ability of objects to take on multiple forms or have multiple behaviors.

• Abstraction: Hiding the complex ...read more
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