Interview Questions

Nitin P. - "public static void sortBinaryArray(int[] array) { int len = array.length; int[] res = new int[len]; int r=len-1; for (int value : array) { if(value==1){ res[r]= 1; r--; } } System.out.println(Arrays.toString(res)); } `"See full answer

Singer29 - "Let me tell you about a time when my manager was on a two week PTO and I was building the post-MVP roadmap for a newly launched product. Being a SaaS platform for supporting restaurants, I'd led the conception, planning, development and launch of the MVP for an online ordering solution for diners in restaurants. After the launch of the MVP, our original plan was to build features which supported table-service restaurants like keeping an open tab. But while looking at the data, I realized that a"See full answer

Akshay J. - "Started by asking clarification questions regarding design constraints and desired features. Break down the into re-usable components - HeroImg and Carousel (with 3 images rendered) Code the components and managed the state for both in the parent component."See full answer

gdecuri - "Load Balancer, Multiple API Servers, game Service, pub-sub system, HTTP Long Polling for status updates, write-through cache. No SQL DB to store user, game, and move information."See full answer

Ilakiya R. - " Design & Architecture Overview: The system was a scalable, cloud-based web application built to manage customer data and automate service requests. Frontend: React.js: Chosen for its component-based architecture, reusable UI, and fast rendering using Virtual DOM. Backend: Node.js with Express.js: Selected for non-blocking I/O, scalability, and rapid API development. Database: MongoDB: Used for its flexible schema, scalability, and ease of handling unstructured data. Authentication: JWT"See full answer

Mike C. - "Before I dive in, I have a few questions - what defines 'quality' and can it be quantitatively measured? (quality is based on the ride score given to each driver) To begin, let's define Lyfts mission. Lyfts mission is 'to improve peoples lives with the best transportation.' Next, I will define the different user segments Lyft serves, select a high-impact user segment, define their pain points, solve for a particularly affecting pain point, and promote solutions. I will discuss metrics once I h"See full answer

Tanu M. - "I always look at the project from three angles, Scope, Schedule, and Cost. To measure the success of the project we also have to look at the other factors, other than the scope, schedule and cost. Here are some of the factors I look at while measuring the success : Metrics : While defining the Goal of the program, we also define the metrics. To assess whether the goal is getting achieved or not, we need to measure the metrics i.e whether the metrics of the program are getting hit or not. For e"See full answer

Bhavna S. - "Step 1: Define Objectives and Key Metrics Objectives: Understand the demand for group video calling. Assess the potential impact on user engagement. Identify technical and user experience considerations. Key Metrics: Call Frequency: Number of 1:1 calls per user. Call Duration: Average duration of 1:1 calls. Call Participants: Identify users who frequently call multiple individuals. Concurrent Calls: Instances where users are engaged in multiple 1:1 call"See full answer

Mark - "Clarifying questions: what's the original goal of this feature? what user problem / issues we identified that we are trying to address? Is there a particular user base or market/regions that we are trying to solve this issue for? Is the experience going to impact the rider's action? or does it also change the driver experience? Assume: the issue we are solving for is focus on the rider's experience - the goal of this feature is to increase the % of matched ride (ie rider/driver matche"See full answer

Tesvara J. - "First, I'll ask some clarifying questions and redefine the scope for us, ok? So, Can we assume that we are working at a company that has discovered a way to travel through time and we have this patented state of the art technology? Sure! Ok, then I will think of this problem from the perspective of a business if that is ok? Yes Is the traveling process instant or lengthy? Assume instant. Can I assume there are no idea constraints and that since time travel is existing that ther"See full answer

Sagrika S. - "The biggest factor that excites me about technology is its ever changing and dynamic trend. In my life, I have seen the transition from landlines to simple mobile to smartphones, from Cathode tube desktop screen to super slim TFT and many more. I think technology has now (with time) become integral part of human life and getting in-sync with it is like a normal and very cool phenomena."See full answer

Pree M. - "What is shopper demand? Let's say the ability to predict whether x number of shoppers are available during a certain time of day based on a some factors Variables: \# number of orders /per hour /per day /per week Shopping Time: time taken for a shopper to prep an order (how many orders can a shopper prep) $ average order value geographic factors since demand will vary by city number of stores or any other multiplying factor which help us predict order volume (which is dire"See full answer

Raul K. - "No of Cars in 1 year = [ Total Road Length] / [Distance Covered by 1 Self Drive Car in One Year] Clarifying Question - How does Mapping work? I assume the car has a bunch of cameras and the car needs to go via a road each once to do the mapping for Google Street view. Is that correct? Assumption Google Street view required cars to go via road once and then use camera for mapping Assumption for average speed of the car - This can vary if the car is on the highway Assumption of Area of"See full answer

Kiley S. - "Measure Success of FB rooms. First I would like to clarify my understanding of the product: FB Rooms is a video call product similar to zoom in which a user can create a room and then invite people to join either with Facebook, if they are already friends or with a link or invite. Able to use filters and virtual backgrounds Now that we have aligned on the understanding of the product, I would like to think about the goals for the product. Goals: Business goals: Rooms was FB’s"See full answer

stash - "Clarification What does showing ads mean ? Is it showing outside of the car as a mobile billboard or showing inside of the car on screens? —> Inside of the car / digital ads What is our product strategy with Waymo. Do we want to get into the ride hailing business or license our tech —> To be defined by you Do we have any near or long term revenue goals for this —> Get wide usage of Waymo tech and be a key driver in accelerating the adoption of self-driving cars accessible in the world"See full answer

Jimmy K. - "Awesome thanks for your question. Can I take a few seconds to write down some thoughts? - Sure Okay I’m ready. So the way I’ll work through this problem is that first I’ll ask some clarifying questions, then I’ll dig into the why, starting with Facebook’s mission and competition and try to end up with a why for this product to exist. Then we will talk about users and will pick a user to focus on. We will then figure out which need to solve for the user given the product's why and the context we"See full answer