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 Calendar Layout and String Packing
The interview reportedly included two separate coding exercises: 1. Day-view calendar layout - You are given a list of events for a single day. Eac...
Analyze trading RFQ competitiveness data
RFQ Competitiveness Analysis in Excel You are given an Excel file containing a few months of trading RFQ (request-for-quote) data for a sales & tradin...
Decide whether to keep a negative-margin promotion
A retail team is running a Mulch promotion. The promotion currently has a negative unit margin (i.e., discounted price is below unit cost), so on the ...
Why pursue full-stack engineering?
You are interviewing for a full-stack software engineering role. Explain why you are specifically interested in full-stack work instead of focusing on...
Learning from Failure & Conflict
Google Product Manager Behavioral Screen: Failure, Conflict, and Mission Fit You are in an early behavioral interview for a Product Manager role. Answ...
Design an in-memory hotel booking system
Design a hotel booking system that supports reservations without using any database. You may only use in-memory data structures. Requirements Define A...
Design comment-likelihood prediction platform
Scenario You’re building an ML platform component that serves a model to predict the likelihood that a user will comment on a given post. The intervie...
Design a cross-region event processing platform
Scenario Design a cross-region event processing platform that ingests events from producers, stores them durably, and delivers them to multiple consum...
Design a ChatGPT-like web chat UI
Scenario You are interviewing for a front-end role. Design a web application similar to a ChatGPT chat experience. The interviewer expects a front-end...
Identify Booking Drivers
You are a Data Scientist at a peer-to-peer car-sharing marketplace. The team wants to understand which product, listing, host, renter, and market feat...
Can bootstrap help reduce variance
An interviewer asks: “Can bootstrap help reduce variance?” Answer this question precisely. Distinguish between: 1) Using the bootstrap to estimate var...
Evaluate an arithmetic expression
Given a valid string expression containing non-negative integers, spaces, and the operators +, -, *, and /, return the computed result. Requirements: ...
Choose Fast or Cheap Models
You are building an AI-powered product and must choose between two inference options for each request: - Option A: higher cost per token, but lower la...
Implement a React flag loader with typewriter effect
Scenario You are given a small React + TypeScript project with a Mocha test runner (and an autograder). The task is a practical front-end mini-project...
Solve string and hashmap interview tasks
Coding questions (solve both) 1) First non-repeating character Given a string s, return the first character that appears exactly once in the string. -...
How would you evaluate stolen-post detection?
You are interviewing for a Meta DSA (product analytics / data science) role. The product team is launching a new Stolen Post Detection algorithm that ...
Design a Real-Time Logging System
Design a logging/telemetry system for a large application platform. Requirements: - Many services send log or metric events to the system - Event subm...
Design in-memory payment and friendship system
Design and implement an in-memory payment system with simple social features. The system processes a sequence of requests that can: 1. Register a user...
Find motion intervals above threshold
You are processing data from a single security camera. You are given: - A threshold value T (a real number). - A vector (array) of time-stamped motion...
Design a donation service for a 3‑day charity
System Design Prompt You are designing an online donation service for a 3-day charity campaign. Requirements - Donors can: - Select a charity campai...