CRED Retail Team Lead Interview Questions and Answers

Q1. Internal Implementation of HashMap
Ans. 
HashMap is implemented using an array of linked lists to handle collisions.
• HashMap stores key-value pairs in an array of linked lists

• Hash function is used to determine the index of the array where the key-value pair will be stored

• Collision handling is done by chaining, where multiple key-value pairs with the same hash value are stored in the same linked list

• HashMap allows null keys and values

• HashMap is not synchronized...read more
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Q1. Conversation and leads sales targets
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Q1. Gold appraisal test
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Q2. Business related
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DS, Algo, DP, Greedy, Stack, Heap

Q1. System Design a DropBox
Ans. 
Design a scalable cloud storage system similar to DropBox.
• Use distributed file system for storing files across multiple servers.

• Implement data deduplication to save storage space.

• Use client-side encryption for security.

• Implement file synchronization across devices.

• Utilize load balancing to distribute user requests.

• Implement version control for files.

• Use metadata for efficient file organization.
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Q2. Design a Linked List
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A linked list is a linear data structure where each element is a separate object with a reference to the next element.
• Start with a Node class that has data and a reference to the next node

• Create a LinkedList class that manages the nodes and provides methods like insert, delete, and search

• Example: Node class - data, next; LinkedList class - head, insert(data), delete(data), search(data)
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Q1. About yourself. Projects worked upon
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Q2. Why want to join Ocrolus?
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Test was based on arrays and some dsa concepts.

Q1. What are your salary expectations?
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Q2. What is your family background?
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Q3. Share details of your previous job.
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Q4. Why should we hire you?
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Q5. Tell me about yourself.
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Q1. Previous experience, team build up capability
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Q2. How many FOS can you hire in 7 days
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Q1. Abstract and interface difference
Ans. 
Abstract classes are classes that cannot be instantiated and can have both abstract and non-abstract methods. Interfaces are a collection of abstract methods.
• Abstract classes can have constructors, interfaces cannot

• A class can implement multiple interfaces, but can only inherit from one abstract class

• Interfaces can be used to achieve multiple inheritance in Java

• Abstract classes can have instance variables, interfaces c...read more
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Q2. Current project
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I am currently working on a project to develop a web-based inventory management system.
• Developing a user-friendly interface for managing inventory

• Implementing database functionality to store and retrieve inventory data

• Integrating with other systems to automate inventory updates

• Creating reports and analytics to track inventory levels and trends
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Sort array without using any inbuilt method?