Interview Questions

Ds S. - "Initially I asked clarifying questions like whether the tree can be empty or not and asked the interviewer to explain what is meant by left view and the explanation for the sample inputs. Then I came up with the level order traversal approach where we visit each level in the binary tree at once using a queue and at each level print the value of the first node. Interviewer seemed satisfied with the approach and asked me to code it up. Finally gave the time and space complexity of the solution."See full answer

Scarlett S. - "(This is debugging, then trade off question) WAU and email open rates can be influencing each other, especially an email opened and then clicked could lead to an active user, but it doesn't necessarily mean that they have correlations or be the only reason causing changes. The approach So we definitely need to look at each cause of Why MAU goes up, and why email notification open rates go down, then develop some hypothesis on for proper cause, I'd love to gather some info to narr"See full answer

Pranav M. - "Statement: Improve the music experience at youtube Is the goal to improve the experience for any particular kind of user/music genre? Ans: No, nothing in particular Goal: I’m going to assume the goal is to improve the experience of listening to music generally Google’s mission is to organise the world’s information. Youtube is a platform that lets people discover videos, interesting content as tailored to their interests, thus serving Google’s mission Music on Youtube also contributes to"See full answer

Anjaly J. - "Goal of the engine : 1. Recommend the "right" videos 2. Make users watch the videos continuously The design consists of 4 different components : Video database (corpus): Consists of million of videos. Recommendation Engine : Based on User history (watch and search history, when enabled) coupled with user context (country, time of the day), the millions of videos are filtered to hundreds of videos and passed through the recommendation engine Ranking : Apart from user history and contex"See full answer

Christopher K. - "Amazon is releasing a product recommendation carousel. Q1. How would we approach this launch with executive leadership? Q2. How would you obtain the data to find out if you should launch and what sample size should your testing batch be for an A/B test scenario? Clarifying Questions What is the current goal for the product recommendation - Increase sales How does the current product recommendation view look like on the home page - A mosaic list view Are there any existing custome"See full answer

Claudia S. - "What is a "cache controller"? With no more details it's difficult to tell what this question is about."See full answer

Aditya S. - "From Product Management perspective: I would first start with some clarifying questions. Is this algorithm to be used across Play Store for all kinds of apps or for some specific catgeory of apps What is the major objective. Are you entering a new market and hence objective is to capture market OR already in an existing market and want to maximise profit (since Google, most likely second objective) I would like to experiment with algorithms and see results before finalising. This will nee"See full answer

Anuradha T. - " I will attempt to answer this. Barnes and Nobles Nook, although Amazon had an advantage in terms of being early to market (2007) with the Kindle, B&N Nook could have been marketed Nook more creatively, given that B&N has access to massive inventories of books in digital format. It fell short of: Focusing on the differentiation in marketing Being aggressive in marketing tactics by promoting the Nook at events, webinars, out-of-store marketing Attracting the user base by highlighting the m"See full answer

Anonymous Tortoise - "Questions? -Geography - US/ International Model? SEXY? Model 3 Most used. Timeline - 3 Quarters? Increase engagement? - Existing people Tesla - Electric company that builds EV cars. Mission- To accelerate the world's transition to sustainable energy? Mission Why - To increase the engagement - active users Recent Trends - Apps are rising on Apple Watch Ease of Use? Portability? Customer Segments New people who bought Tesla Existing People Models - Model 3 Fleet Owners ["See full answer

Hems S. - "I will start with clarifications: Q: How do you define "healthy" marketplace? A: When there is a balance in demand and supply Q: If we have balance, is it fair to assume, lot of transactions will happen? A: Sure Q: Also, is it fair to assume well known tokens on the platform already have a healthy marketplace with enough buyers and sellers. The problem is mainly with new tokens that will be introduced? A: Thats a fair assumption Q: Its okay to limit scope for this exercise to the CB retail a"See full answer

Devendra B. - "Narrow scope of mission: As a Product Manager for Google Search, my primary mission would be to enhance the search experience for users, ensuring they find the most relevant information quickly and efficiently. This involves continually improving the quality of search results, enhancing the user interface, and exploring innovative features to meet evolving user needs. Customer segments: Google Search caters to a diverse range of users, including students, professionals, researchers, and"See full answer

Philip C. - "Initial Assumptions I’m going to assume that this is a blue sky question, and there aren’t any constraints in terms of geo, funding, etc. With that in mind, one deeply unoptimized product is… a parking meter. I’ll assume for the sake of this answer that we’re focusing on parking in an urban environment since that’s where most parking-related friction exists. I’m also going to assume that we’re a startup and don’t have any special strengths/ weaknesses that we need to account for"See full answer

Amit A. - "When I look to join a company, I think of long term association. Hence, I put a lot of focus on the team that I am going to work with, the culture, the value that I will add to the company & the opportunities for me to learn & grow. Microsoft is one of the pioneers in the tech industry touching the lives of many corporate and consumer clients and helping them to achieve more. To answer your question specifically, i would say -: Microsoft will provide me a platform to work with some of the sma"See full answer

Karthik R. - "Good Discussion on the distributed messaging queues (Complex topic with lot of nuances) Liked the mind-map style drawing of requirements and metrics capture Touched on different types of queue styles (point to point, pub-sub, fan-out/fan-in) Storage and WAL usage was interesting Some distributed queue challenges that could be helpful to highlight / expand are: Message guarantee / semantics - Ordering of messages across different servers Replication Master slave architecture or Pe"See full answer

Kirit K. - "Had to refactor code at recent startup after having it fully deployed and working. This was due to us hitting some performance and UX issues. What I did was refactor the core engine first myself, and then line up a work team to progressively refactor the edges and exception flows that sit around the core. Completed in 4 weeks."See full answer

Piyush D. - "Honestly, In addition to having the right expertise and skills required for this job, I am really looking forward to being part of this organisation’s journey. I am really confident that I will really exceed your expectations in achieving both mine and the company’s goals. I have worked with different teams in different capacities, managed a team of engineers successfully from very early part of my career and that has made me a very easy person to work with. I get things done easily. I am passio"See full answer

Pulkit G. - "Top 3 segments for the Apple Watch: At core, Apple watch is a wearable companion to the iPhone that does 3 big things - fitness & other health metrics tracking, act as smart watch for push notifications on the go, and acts as a high-tech fashion accessory. Customer segments - a) Fitness and adventure enthusiasts + for everybody (for basic sleep and HR tracking) - the new Apple Watch Ultra is targeted specifically at the outdoorsy (and aspiring adventurists) + also all the Nike integration b) F"See full answer

Ilnur I. - "I can try to summarize their discussion as I remembered. Linear regression is one of the method to predict target (Y) using features (X). Formula for linear regression is a linear function of features. The aim is to choose coefficients (Teta) of the prediction function in such a way that the difference between target and prediction is least in average. This difference between target and prediction is called loss function. The form of this loss function could be dependent from the particular real"See full answer

Prabhav G. - "Assumptions and Clarifications! 1 . What is the aim? increase monetization or to just provide easy accessible food for customers 2.What are the supposed items to be available in the vending machines? 3.How many Vending Machines per hotel if more than 1 Can we add different items in the machines or are they supposed to be similar? 4.Which company is looking to Design this machine?Is it google? Or some other company? 5.These machines should they be available to paying guests or visitors or bot"See full answer