Interview Questions
Practice the exact questions companies are asking right now.
"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"
"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"
"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."
"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."
"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."
"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Design poker-like hand comparison with custom ranking
Problem Design an object-oriented solution to compare two players' hands in a card game similar to poker. You are given two hands (each a fixed number...
Design a Customer Review Page
Design the customer review page for a large marketplace or local-services platform. The page should support: - Aggregate ratings, such as average scor...
Write SQL for seller and vehicle metrics
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Select MOST/LEAST appropriate actions (SJT)
Situational Judgment Test (SJT): Choose the MOST and LEAST appropriate action This question reproduces the format of a pre-interview Situational Judgm...
Design a URL shortener
Design a URL shortening service similar to Bitly. The service should accept a long URL and return a short alias, and visiting the short URL should red...
Implement a JSON Parser
Implement a JSON Parser Write a parser that takes a single string containing one JSON value and returns the corresponding in-memory data structure. Yo...
Design a free-month experiment
An online subscription product is considering a promotion that gives eligible new users their first month free instead of charging immediately. Design...
Design personalized restaurant search and recommendations
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Code Editor with Block Shrink and Expand (Code Folding)
Implement the core of a code editor (similar to VS Code) that supports code folding: collapsing ("shrink") and restoring ("expand") indentation-based ...
Model data for an ads platform
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Build a model using only pandas/numpy
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Design an In-Memory Spreadsheet Engine
Design an In-Memory Spreadsheet Engine Build a minimal spreadsheet engine, similar to the calculation core of a tool like Excel. The engine stores val...
Solve String Arrays and Row Deduplication
You are given the following independent coding tasks. For each task, write clean production-quality code, handle edge cases, and state the time and sp...
Design experiments for marketplace product changes
You are interviewing for a Data Scientist role at a food-delivery marketplace such as DoorDash. For each scenario below, explain how you would evaluat...
Design a RAG system with agentic tools
Design a Retrieval-Augmented Generation (RAG) question-answering system for an enterprise knowledge base. Requirements: - Users ask natural-language q...
Answer Common Behavioral Questions
Prepare strong responses for these behavioral prompts: - Describe a difficult project you worked on. - Describe a conflict with a coworker and how you...
Design a Metrics Storage Platform
Design a distributed backend for storing and querying application metrics. The system should collect time-series metrics from many services running ac...
Normalize targets for multitask regression
You are training one machine learning model with a shared representation and two regression heads. Each example has two continuous labels: - Target A ...
Design several backend components
The interview note also referenced several low-level design and backend design questions. For each prompt, define the core APIs, data model, major cla...
Answer Google Behavioral Questions
Question In a behavioral interview for a Data Scientist role at Google, how would you answer the following questions? A strong answer should be specif...