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."
Compute distance to nearest taxi in grid
You are given an R x C grid representing a city map. - grid[r][c] = 1 means there is a taxi located at cell (r, c). - grid[r][c] = 0 means the cell is...
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...
Implement stacks, streaming median, and upward path sum
Complete the following coding problems. State the time/space complexity and key edge cases for each. 1) MinStack Design a stack that supports: - push(...
Compare Unsupervised Clustering Methods
Explain several unsupervised clustering approaches and when you would use each one. At a minimum, compare centroid-based clustering, hierarchical clus...
Merge overlapping corrections
Implement correctionMerge(corrections). You are given a list of text-correction spans. Each correction applies to an inclusive interval [start, end] a...
Design a Content Moderation Platform
Design a large-scale content moderation system for a social platform that accepts user-generated text, images, and videos. The system should detect po...
Explain impact and partnership
Prepare for a hiring manager interview and a cross-functional partner conversation. Be ready to answer questions such as: - Why do you want to join th...
Connect Points With Minimum Total Distance
You are given an array points, where points[i] = [xi, yi] represents a point on a 2D plane. The cost to connect two points i and j is their Manhattan ...
Review a PR for thread-safe request handling
PR review / debugging prompt (backend) You are reviewing a pull request that introduces a CustomerRequest class used by a web service to build and sen...
Compare streaming frameworks and delivery semantics
Name popular streaming/data-processing frameworks (e.g., Kafka-based stacks, Flink, Spark Streaming, etc.). Explain at-most-once, at-least-once, and e...
Design a scalable web crawler
Design a Scalable Web Crawler Design a production-ready web crawler that discovers and downloads publicly accessible web pages at internet scale. The ...
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...
Implement a multi-rover Mars controller
Problem Build a small command-line “Mars Rover Controller” program. Single rover (v1) A rover starts at coordinate (0, 0) on an infinite 2D grid and i...
Design a configurable monthly API rate limiter
Design a rate-limiting system for an expensive API. Requirements - Each user (or API key) has a monthly quota (e.g., 10,000 calls/month). - Users can ...
Design RL reward for speed limits
RL for Autonomous Driving — Conceptual + Practical You are training a reinforcement-learning agent to drive a vehicle. The interview moves from policy...
How compare Waymo turning trajectories statistically
Problem You have aerial-drone data that records the 2D turning trajectories of vehicles passing through multiple intersections. Each trajectory corres...
Demonstrate domain expertise and ramp-up ability
Behavioral interview prompt A hiring manager wants to assess your domain experience (e.g., advertising/marketing tech) and how you handle situations w...
Design a Global Calendar Service
Design a calendar system for users in multiple time zones. The system should support: - creating, updating, deleting, and viewing calendar events - on...
Find an Exit in a URL Maze
You are given a starting URL for a web-based maze. Each URL represents one room in the maze. Your task is to write a program that discovers whether th...
Design a pricing experiment with network effects
Scenario You want to launch a new pricing model that incentivizes shoppers to place/pick up more orders during rush hours in a two-sided marketplace (...