RingCentral Front end Engineer Interview Questions and Answers

Process for freshers-

Go through RS Agarwal book and be ready for logical reasoning questions

Criteria for selection is 75% so make sure to select right ans

There will be 2 questions based on selected language

And questions on general English.

Q1. Technical round will based on mentioned language in resume. My round was on Java language. So prepare the basic of Java and advance Java some time they ask you to write some syntax so prepare those synta...read more
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Q1. It's formality round Just present your self well Be ready to reallocate any where they want. You can ask some question about the work culture in company.
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Q1. Design and code a zoo management system.
Ans. 
A zoo management system to track animals, enclosures, staff, and visitor information.
• Create classes for animals, enclosures, staff, and visitors

• Implement functions for adding, updating, and deleting records

• Include features for scheduling feeding times, cleaning enclosures, and managing staff shifts
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Standard DSA questions

Q1. Standard HR stuff.
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4 Coding Questions Leetcode Level Medium to Hard. Had to solve it within 1.5 hours.

Was able to solve 2 questions - One hard and one Medium. Hadn't enough time to solve all.

Q1. DSA based round. Was asked to write 3 APIs based on the the given n-ary tree.
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Q2. Questions based on Path, end node, best path, etc.
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Q1. System Design round : Was asked to design RDBMS for the given problem.
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Q1. HM Round : Mostly behavioral based around Twilio Magic Values
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Q1. Bar Raiser Round : Taken by a director. Was asked behavioral questions again.
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Leetcode trap watee question

Q1. Reverse linked list using the recursion
Ans. 
Reverse a linked list using recursion
• Create a recursive function that takes the head of the linked list as input

• Base case: if the head is null or the next node is null, return the head

• Recursively call the function with the next node as input

• Set the next node's next pointer to the current node

• Set the current node's next pointer to null

• Return the new head of the reversed linked list
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Q2. Find max number in the linked list using stack.
Ans. 
To find max number in linked list using stack.
• Create an empty stack.

• Traverse the linked list and push each element onto the stack.

• Pop elements from the stack and compare with max value.

• Return the max value.
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Q1. On spring, boot, java
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Q1. Difference between prototype and singleton scope
Ans. 
Prototype scope creates a new instance for each injection, while singleton scope creates a single instance for all injections.
• Prototype scope creates a new instance every time it is injected, while singleton scope creates a single instance for all injections.

• Prototype scope is useful when you want a new instance each time, like for stateful objects. Singleton scope is useful for sharing a single instance, like for stat...read more
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