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."
Implement Datacenter Router Commands
Implement process_commands(commands) -> list[str] for a datacenter router simulator. The input is a list of command strings, and the function must ret...
Reconcile Records Across Sources
In an AI-assisted ("AI coding") interview round, you are asked to reconcile person records across multiple data sources. Each source contains records ...
Least Frequently Used (LFU) Cache
Least Frequently Used (LFU) Cache Design and implement a data structure for a Least Frequently Used (LFU) cache that supports get and put operations i...
Java and Object-Oriented Design Fundamentals
Java and Object-Oriented Design Fundamentals This is a rapid-fire fundamentals round covering core Java language and collection semantics, the Spring ...
Explain Modern Python Features and Ecosystem
You are interviewing for a senior Python software engineering role. The interviewer is probing the breadth and depth of your Python knowledge: not jus...
Explain Your Most Technically Complex Project
Tell me about the most technically complex project you have worked on. Walk me through the problem and why it was hard, the constraints you operated u...
Explain Core ML Concepts
You are interviewing for a senior AI/ML-oriented Data Scientist role at a financial institution (J.P. Morgan). This is the "ML fundamentals" portion o...
Design a Donation Platform
Question Design an online donation platform that lets users discover and contribute to charity campaigns or nonprofit organizations. Payment execution...
Design Mobile Model Usage Quotas
Design the mobile and backend API flow for controlling access limits to different AI model versions in a ChatGPT-like mobile app. The product offers m...
Find User Airport at a Time
You are given a list of flight records. Each record contains: - user_id: the traveler identifier - departure_airport: the airport where the flight sta...
Describe Growth, Mistakes, and Obstacles
You are interviewing for a new-grad Software Engineer role at a Chicago-based firm. After a technical screen, you reach a behavioral round run by an e...
Derive Backpropagation for Matrix-Product Layers
Consider a neural-network block whose output is produced by multiplying a sequence of trainable weight matrices together, then applying the resulting ...
Answer Leadership Scenario Questions
In a behavioral interview for a software engineering role, you will be asked to recount real experiences from your past work. Each prompt below target...
Design fulfillment truck routing and inventory system
Scenario You are designing the software platform for a large e-commerce fulfillment network that plans truck routes and manages container/inventory mo...
Fix the Broken Search Filter in a Book Catalog API
Fix the Broken Search Filter in a Book Catalog API A small book-management web app lets users search a library catalog. The frontend sends the user's ...
Shortest Path in a Grid with Blocked Cells
Shortest Path in a Grid with Blocked Cells You are given an m x n grid that represents a floor plan. Each cell is one of: - 0 — an open cell you can w...
Design a REST API Abstraction Layer
Design a REST API Abstraction Layer (Internal Service-Client SDK) A company runs many application servers that call internal REST services. Today, eve...
Solve Flower Placement and Directory Deletion
You will solve two independent coding tasks. Task 1: Place Flowers on a Grid Given an N x N grid: - 'H' represents a house. - '0' represents an empty ...
How to prepare for AI-assisted coding interviews?
Scenario You've been invited to a DoorDash onsite round labeled the "AI Code Craft Challenge." Per the prep kit: - You will receive starter code — an ...
Compute Parking Clustering Probability and P-Value
There are 20 parking spaces in a row, numbered $1$ through $20$. Four cars park uniformly at random in four distinct spaces, so every subset of $4$ sp...