Interview Questions

Rick E. - " from typing import List def getnumberof_islands(binaryMatrix: List[List[int]]) -> int: if not binaryMatrix: return 0 rows = len(binaryMatrix) cols = len(binaryMatrix[0]) islands = 0 for r in range(rows): for c in range(cols): if binaryMatrixr == 1: islands += 1 dfs(binaryMatrix, r, c) return islands def dfs(grid, r, c): if ( r = len(grid) "See full answer

Yag S. - "I studied Exponent's TinyURL system design video. My interviewer was asking many detailed questions on API design, schema, as well as data required to store. I found system design questions are bit high level instead of depth. I think should have detail design of API, schema and some additional flavors."See full answer

Vlada J. - "Adding to what Zoe already mentioned: running a user study with existing customers to understand if they see the proposed design as favorable running AB testing with users to compare two different designs and decide which one is more favorable (based on a previously determined metrics)"See full answer

Anonymous Roadrunner - "from typing import List def three_sum(nums: List[int]) -> List[List[int]]: nums.sort() triplets = set() for i in range(len(nums) - 2): firstNum = nums[i] l = i + 1 r = len(nums) - 1 while l 0: r -= 1 elif potentialSum < 0: l += 1 "See full answer

Ankit kumar S. - "To analyze a year-over-year (YoY) slowdown in transactions, you should start by understanding the context, segmenting data, identifying potential drivers, and then formulating actionable recommendations. This involves a structured approach that includes a thorough examination of the data, both internally and externally. Understand the Context: Define "transactions": What specific transactions are being analyzed (e.g., website purchases, in-store purchases, total transactions)? Timeframe: Sp"See full answer

Satesh A. - "I dont know is good and you should use however than but."See full answer

Michael F. - "As an interviewer, I have asked this question to candidates in the past. Here are the major topics I am looking for in an interview The candidate should understand that there are ways of measuring the loss of a particular clustering. For example, we can take the average distance of each point to it's cluster center. The candidate should understand that this loss will always decrease as the number of clusters increases. For that reason, we can't just pick the value of K that minimizes the l"See full answer

Karthik M. - "I would always pick a specific product and make a case. Answering this question without a specific product in mind makes the answer unstructured in my opinion. For instance, I would pick Gmail as an example to answer this and structure my response. Clarifications & Assumptions Let us pick a specific product and structure our response - for instance - let us pick Gmail as the product that you want to analyse and make a Go / No Recommendation to Sunset the Product. Overall Google Revenu"See full answer

Rohan S. - "I got to play with a VR for the first time a few weeks ago at my friend’s house and I loved it, so this is a really fun question. Clarifying Questions Is this something we are looking to create Microsoft or are we a startup company etc? > Education can refer to elementary, high school, university, or even self-learning (e.g. Udemy). Is there a specific area we want to focus on? << What do y"See full answer

Nilanjan D. - "Amazon Prime will generally have a limited group of uploaders rather than a million of them. This should influence the design of the Uploader service as it doesn't need to scale that much. Also the Encoding service role was not too clear"See full answer

BePostive - "For me the answer looks very broad and general. It would be good the reply is relevant and focus good examples using STAR format. Please let me know your views."See full answer

Dinesh G. - "import numpy as np class Centroid: def init(self, location, vectors): self.location = location # (D,) self.vectors = vectors # (N_i, D) class KMeans: def init(self, n_features, k): self.nfeatures = nfeatures self.centroids = [ Centroid( location=np.random.randn(n_features), vectors=np.empty((0, n_features)) ) for _ in range(k) ] def distance(self, x,"See full answer

Prerak B. - "Would like to ask some clarifying questions: Is it a digital product? Yes? Application or website? Geography we are targeting? Assuming it is an app. Are we a new company or startup? Do we have any tie ups with other companies to reach a wider audience? Assuming I am the product manager of this application – goal of the application is to encourage voting more questions: Are we in the election year? Nearing the voting phase? If yes, then it will be easier for us to get users fo"See full answer

Shwetang S. - "Clarifying Qs: Design meaning - UI elements, front end requests and backend system architecture GIFs = standard short animated videos of 1/2 seconds built either using images or videos Make GIFs = generate gifs from images and videos Do we want to build the system for a certain volume of requests? Do you want me to consider the scalability part? I: Assumptions 1,2 & 3 are correct, ignore 3 for now Users: User b/w age 18-45 trying to generate GIFs using images(at least 3)"See full answer