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 a Hosted Notebook Platform
Design a hosted notebook platform for interactive code execution, similar to a cloud-based notebook service. The system must support 500,000 concurren...
Design ad frequency capping
Design a frequency capping system for an advertising platform. The system must ensure that a user does not see the same advertisement more than a conf...
Design a Food Delivery Cart
Design the cart subsystem for a food delivery platform similar to Uber Eats. The cart should let users: - add, update, and remove items - choose item ...
Design a Real-Time Top-K Ranking System
Design an object-oriented real-time Top-K ranking system. The system receives score updates for many entities, such as users, drivers, restaurants, or...
Design a PDF-to-Markdown Inference API
Design an inference service that converts PDF files to Markdown. You can assume the following building blocks already exist: - A CPU-intensive functio...
Design a Double Descent Experiment
You are given a take-home assignment for a mechanistic interpretability or machine learning interview. Design an experiment that demonstrates sample-t...
Design a stock order manager
Design an order management service for stock buy and sell requests. The system does not match trades itself. Instead, it integrates with a third-party...
Design a Streaming Job Scheduler
Design a task scheduling service that continuously ingests tasks and dispatches them to workers. Each task has: - id: unique task identifier - deadlin...
Explain Logistic Regression, Backprop, and Adam
Answer the following machine learning fundamentals questions: 1. Logistic regression - Explain how logistic regression works for binary classificat...
Find Valid IP Addresses in Files
You are given an absolute or relative path to a directory on the local file system. Write a program that recursively traverses every subdirectory unde...
Design a Parking Lot
In an AI-assisted coding round, design the core object model and APIs for a parking lot system. The system should support: - multiple floors - multipl...
Design Restaurant Search and Monitoring
Design the search component for a food delivery application. Users should be able to search for restaurants and menu items by text query, for example ...
Implement Backprop for a Tiny Network
Implement and explain the forward and backward pass of a small neural network using both NumPy and PyTorch tensors. Start with a batched input X of sh...
Design a Food Delivery Recommender
Design a recommendation system for a food delivery app similar to Uber Eats. When a user opens the home page, the system should recommend restaurants ...
Schedule Non-Overlapping Meetings Efficiently
Implement a meeting scheduler that stores meetings as half-open intervals [start, end), where start and end are integer timestamps and start < end. Th...
Design a Distributed Crossword Solver
Design an online service that solves crossword-like word puzzles. A user submits a puzzle description that includes the grid layout, blocked cells, an...
Design a Parallel Image Processor
You are asked to design an image-processing component. An image is represented as a 2D array of pixels, and the processor must apply one or more filte...
Filter Bad Human Annotations
You are given a training dataset labeled by human annotators, but some annotations are low quality, inconsistent, rushed, adversarial, or simply wrong...
Solve Two Array Optimization Problems
This online assessment included two coding problems. Problem 1: Maximize protected city population You are given: - an integer n - an array population...
Compute Roller Coaster Scores
You are given a list of roller coaster descriptions. Each description is a string in the format: <CoasterType> <MaxSpeed> <BumpsPerSecond> <LiftType> ...