Interview Questions

Priyank S. - "To clarify are we looking to build this product within FB app or standalone – standalone Can I assume I can build for US as mvp and then we can roll it globally phase wise – yes Is there a limitation to what task we want to cater people on our app or it could be multi task usual handyman not a niche – yes usual handyman Ok so if I understand we are designing a product for handyman for usual task to launch it in US and this is a standalone app not residing in FB app Overall I will talk about mi"See full answer

Jaime A. - "I might be missing something but the solution, seems to be incorrect. ... , post_pairings AS ( SELECT ps.user_id, ps.postseqid AS failpostid, ps.postseqid + 1 AS nextpostid FROM post_seq AS ps WHERE ps.issuccessfulpost IS TRUE ) -- here ps.issuccessfulpost IS TRUE the condition should be FALSE -- in that way ps.postseqid is the actual failed post(failpostid) -- Additionally, at the end the join is assumming that the sequence id is going to match the post_id, wh"See full answer

Exponent - "This is an interesting Favorite Product question. Normally when we're asked this question we pick technology products, but this time the interviewer wanted to throw us a curveball by asking about a non-technical product. Don't worry - it still follows the same approach: Choose a product and briefly explain what it is Who are the users? What are their pain points? How did competitors solve it in the past? **How does this product address these pain points differe"See full answer

Diamonde H. - "I'm interpreting this question as "what's the process you'd go through to launch a new product". I'd approach it this way, assuming we haven't yet made any determinations around the what/how: Step 1: Pick an industry of interest with Industry criteria based on Industry growth rate VC investments (pitchbook is a good resource) Step 2: Evaluate the various industry verticals and select the vertical with the most opportunity evaluated by Age of companies New entrants Existing -"See full answer

Kartikeya N. - "Clarifying questions By mutual follows, we mean that both of them follow each other on Tiktok, correct? : Yes We want to know an average number for the same, ie mean and not median or any other value, right? : Yes Shall we consider the global audience or that of a particular country? : Global Can we assume the time setting of this question as of 2025?: yes Here’s how I will tackle this question. > We will first estimate the total number of Tiktok users. Then we will try to"See full answer

Raj S. - "ads vsd dsa. How would you improve Facebook Groups given the goal of increasing the feeling of community?"See full answer

Abhinav J. - "Use Normalization when: When using pixel values (0-255) into a Neural Network. ➔ Normalize the data between [0,1] to avoid huge input values that could slow down training. When using k-Nearest Neighbors (kNN) or K-Means Clustering. ➔ Because distance metrics like Euclidean distance are highly sensitive to magnitude differences. You are building a Recommender System using Cosine Similarity.➔ Cosine similarity needs data to be unit norm. Use **Sta"See full answer

Scott S. - " Situation In the derivatives trading domain, timely and accurate data is crucial for making informed trading decisions. Our existing data processing system was facing challenges with latency and scalability, which hindered our ability to react swiftly to market changes. To address these issues, we designed a new real-time market data processing platform. Task The task was to develop a low-latency data processing platform that could handle real-time market data ingestion, processing, an"See full answer

Pm P. - "Clarification: What does "share" imply? is it the action of sharing the app or website ? My assumption here we are not talking about stock market share :P, other factors come into play there. Diving-in: I would like to classify the questions into 2 buckets Internal Do we have data on which platform the shares increases and split up by Mobile and if mobile via app or via browser, split by apple/android, split via desktop, tablet . Essentially source of the shares. What this will t"See full answer

Anamitra - "Question: Design a CookBook app A few questions I’d ask the interviewer are: what’s the purpose/goal of the app, who are the user segments, and any primary geography we’re targeting as the first launch of the product. Answers/assumptions to the questions: let’s say below are the answers the interviewer provides: what’s the purpose/goal of the app: to help people to follow a recipe, follow it while cooking, and also request a recipe who are the user segments: considering people who’r"See full answer

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

Vishnu G. - "This is a classic strategic dilemma, but the answer for Walmart, given its core business model and strengths, is quite clear: Invest in boosting dish soap production. Here's why: Proven Success: Dish soap is Walmart's top product with strong, established sales. Scaling leverages existing, efficient supply chains and customer demand. Core Competency: Walmart excels at high-volume, low-margin household goods. This aligns perfectly with their business model and customer base. **L"See full answer

Sandeep Y. - "Functional requirement's: partial search while searching for users, products any keywords in the search. additional keywords in the filter Black listed words in the search. Non functional requirements: low latency, search through 2 Billion records recent search should be cached. Design: high reads, we should have caching enabled over the primary db storages. caching cluster can be added when the search load increases. read ahead. - check in cache (periodic cache refresh), lfu, lru "See full answer

Sailaja R. - " import java.util.*; class Solution { static int leastInterval(char[] tasks, int n) { if (tasks.length == 0) return 0; // as the number of characters are 26 defining an array of 26 and incrementing // the defined array int[] count = new int[26]; for (int i = 0; i<tasks.length; i++){ count[tasks[i] -'A']++; } Arrays.sort(count); int maxFreq = count[25]; int idle = (maxFreq - 1) * n; "See full answer