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 an A/B test for search ranking
Scenario You work on a search product and have built a new search ranking/retrieval algorithm (Variant B). The current algorithm is Variant A. You nee...
Solve four algorithmic coding tasks
You are given four independent coding tasks. They may be solved in any order, and partial test-case credit is awarded for each task. The tasks are rou...
Build Resilient Aggregation and Debug Routing
This onsite combined two software-engineering exercises: 1. Implement a service method that calls multiple mock downstream APIs, merges their response...
Design a real-time game leaderboard
Design a real-time leaderboard for an online game. Requirements: - Players submit score updates frequently. - Query top N players globally and per reg...
Count Target-Sum Paths in an N-ary Tree
You are given the root of an N-ary tree. Each node contains an integer value and a list of zero or more child nodes. You are also given an integer tar...
Design a RAG Ranking Pipeline
Design a retrieval-augmented generation pipeline for Microsoft Teams that helps an AI agent answer a user query by finding the most relevant applicati...
Design a task management system with TTL
Task Management System (in-memory) Design and implement an in-memory task management system that supports tasks, users, task assignment with TTL (time...
Compute nearest bathroom distance for each desk
You are given an m x n grid of characters containing only: - 'B' = bathroom - 'D' = desk - '_' = empty cell From any cell you may move one step up/dow...
Explain scope and impact under pressure
Behavioral prompt (pressure-style) An interviewer repeatedly interrupts and challenges you to be precise. 1. Tell me about a project you led. 2. For e...
Write SQL for TikTok Live creator metrics
You are analyzing TikTok Live sessions and their engagement. Tables live_room Each row is a Live session (“room”) launched by a creator. | column | ty...
Write SQL for first share and closest collaborator
You are given event data about users viewing design files. Assume the following tables: - files(file_id, creator_id) - creator_id is a VARCHAR user ...
Design a real-time delivery dashboard
System Design: Real-Time Delivery Operations Dashboard Context Design a real-time operations dashboard for a two-sided delivery platform. The dashboar...
Design Broadcast Scheduling APIs
Design a broadcast messaging service for companies. Requirements: - Each company has a set of subscribers. - A client can schedule a message to be bro...
Implement CRUD API and tests
You are given two software-engineering tasks. 1. Implement a simple REST API for a resource such as Note or Message. - Support basic CRUD operation...
Answer core probability and statistics questions
Answer the following interview-style probability/statistics questions. Provide formulas and short explanations. 1) Bayes’ rule: State Bayes’ rule. Giv...
How should you evaluate unconnected content?
A social media platform has launched a feed feature that increases the share of unconnected content, meaning posts from creators who do not have an ex...
Design signup and login service
Design a basic email/password authentication service that supports user sign-up and login. You may not rely on third-party identity providers (no OAut...
Solve two coding assessment tasks
The online assessment contained two coding problems: 1. Maximize store revenue You are given an integer array quantity of length n, where quantity[i...
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...