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 multi-tab browser history and trade-offs
Design: Multi-Tab Browser History Context: Extend a single-tab browser-history component into a multi-tab manager that supports opening/closing tabs, ...
Design a thread-safe bounded queue
Design a Thread-Safe Bounded MPMC Queue with Timeouts and Fairness Context You are building a reusable, in-memory, bounded queue that supports multipl...
Find next terms in sequences
Pattern Recognition: Find the Rule and Next Term You are given 8 number sequences. For each sequence: - Identify a clear rule that generates the terms...
Fairly Distribute Money With Limits
Fairly Distribute Money With Limits You are given an integer amount representing a total sum of money to distribute, and a list of employees. Each emp...
Design an On-Demand Delivery Platform
Design an on-demand local delivery marketplace for restaurants or grocery stores. The platform should support customers browsing merchants, building s...
Design a Real-Time Auction Platform
Design a real-time online auction platform. Users can browse an auction, submit bids, and see the current highest bid and bid history update live. Tra...
Explain SHAP in an ML System
Describe how you would build an end-to-end machine learning system for a business use case such as churn prediction, ad conversion prediction, or cont...
Compute Gaussian Probability and Regression Coefficients
You are given two independent standard normal random variables, X and Y. 1. Compute P[X > 3Y]. 2. In ordinary linear regression with design matrix X i...
Design and implement a word-guessing game
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Design Internal Chat and Re-engagement Emails
Design an internal chat system for an event marketplace company. Requirements: - Employees can send and receive one-to-one messages in real time. - Cl...
Solve SQL and Python OA tasks
Complete the following two online-assessment tasks. Task A — SQL You are given two tables: customer - customer_id INT - customer_name VARCHAR - purcha...
Design a real-time recommendation system
You are asked to design a real-time recommendation system for a large-scale consumer product (for example, recommending items or content to users in a...
Implement a Thread-Safe Pub-Sub Service
Implement a simple server-side publish-subscribe system using Python's standard threading library. Requirements: - Multiple publisher threads may publ...
Design Flight Booking and Voting Systems
Answer both system design prompts. Part A: Flight Ticket Booking System Design the backend for a flight ticket booking product. The system should supp...
Implement Concurrent Any-True Shot
You are given a function shot(index) -> bool. Each call may take between 1 and 10 seconds to return. Implement volleyShot(indices) -> bool for a list ...
Design Basketball Shot Outcome Prediction
Design a machine learning system that predicts whether a basketball shot will be made or missed using only information available at the moment the pla...
Implement an LRU cache
LRU Cache Design and implement a fixed-capacity Least Recently Used (LRU) cache. Operations - get(key) -> value | -1/null: Return the value if present...
How to prepare for a hiring manager round
You have an upcoming hiring manager (HM) / behavioral interview round (plus a separate HR round) for a quantitative/tech role. Question 1. What does a...
Design an async API with idempotency
System Design: Asynchronous API Call With Idempotency Design an HTTP API that triggers a long-running operation (seconds to minutes) against downstrea...
Resolve a Design Conflict
Describe a time you had a disagreement with teammates or stakeholders about a technical design decision. Explain the context, the competing options, t...