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InterviewBit Interview Questions and Answers

Updated 14 Jan 2025

Q1. Sum of Two Numbers Represented as Arrays

Given two numbers in the form of two arrays where each element of the array represents a digit, calculate the sum of these two numbers and return this sum as an array.

E...read more

Ans.

Given two numbers represented as arrays, calculate their sum and return the result as an array.

  • Iterate through the arrays from right to left, adding digits and carrying over if necessary

  • Handle cases where one array is longer than the other by considering remaining digits

  • Ensure the final sum array does not have any leading zeros

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Q2. Binary Tree Maximum Path Sum Problem Statement

Determine the maximum path sum for any path in a given binary tree with 'N' nodes.

Note:

  • A 'path' is defined as any sequence of adjacent nodes connected by an edg...read more
Ans.

Find the maximum path sum in a binary tree by considering any path of adjacent nodes.

  • Traverse the binary tree to find the maximum path sum by considering all possible paths.

  • Keep track of the maximum sum encountered during traversal.

  • Update the maximum sum if a new path with a higher sum is found.

  • Consider both left and right child nodes while calculating the path sum.

  • Handle null nodes represented by -1 in the input.

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Q3. Can you describe the assignment you received to build a website, including all the features and additional requirements?
Ans.

I was tasked with building a website for a small business, including features like a homepage, product pages, contact form, and online payment integration.

  • Homepage design with company logo and brief description

  • Product pages with images, descriptions, and pricing

  • Contact form for customers to reach out

  • Online payment integration for seamless transactions

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Q4. What new features would you add to the project you developed?
Ans.

I would add a real-time chat feature to enhance communication among users.

  • Implementing a chat system using web sockets for instant messaging

  • Adding features like read receipts, emojis, and file sharing

  • Integrating notifications for new messages

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Q5. What are the different sorting techniques available in JavaScript?

Ans.

Some of the sorting techniques available in JavaScript include bubble sort, insertion sort, selection sort, merge sort, and quick sort.

  • Bubble sort: repeatedly steps through the list, compares adjacent elements, and swaps them if they are in the wrong order.

  • Insertion sort: builds the final sorted array one item at a time by inserting each element into its correct position.

  • Selection sort: repeatedly finds the minimum element from the unsorted part of the array and swaps it with...read more

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Q6. What is the architecture of Node.js?

Ans.

Node.js follows a single-threaded event-driven architecture based on the V8 JavaScript engine.

  • Node.js uses an event-driven, non-blocking I/O model.

  • It runs on the V8 JavaScript engine, which is the same engine used by Google Chrome.

  • Node.js uses a single-threaded event loop to handle multiple concurrent connections efficiently.

  • It allows for asynchronous programming using callbacks.

  • Node.js modules are CommonJS modules, which can be imported using the require() function.

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Q7. What do you know about Scaler

Ans.

Scaler is an ed-tech startup that offers online courses in technology and business skills.

  • Scaler provides courses in programming, data structures, algorithms, and more.

  • They offer mentorship and career guidance to help students advance in their careers.

  • Scaler has a strong alumni network and partnerships with top tech companies.

  • The platform focuses on practical learning and real-world projects to enhance skills.

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