InterviewBit Interview Questions and Answers

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

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.

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

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

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

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.