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."
Calculate Order Request Metrics
You are working with DoorDash order and delivery-request data. Write SQL to answer the questions below. Tables: 1. orders - order_id BIGINT, primary k...
Handle Cross-Team Dependencies and Scope Conflicts
Answer the following behavioral interview questions using a concrete example from your experience: 1. You depend on another team to complete work, but...
Most Frequent Call Stack from Profiler Samples
A sampling profiler periodically takes a snapshot of a running program's call stack. Each snapshot is the chain of active function calls at that insta...
Review a Web Application Architecture
You are given a high-level architecture diagram for a web application: Client/Web App -> DNS -> Load Balancer -> Application Service -> Database The a...
Implement simplified Excel with SET/GET/SUM
Implement a simplified in-memory spreadsheet that supports three operations: SET, GET, and SUM, similar to basic Excel functionality. Assumptions and ...
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...
Measure Local News Launch Success
Nextdoor is considering launching a Local News feature that recommends neighborhood-specific news articles inside the app. The goal is to increase use...
Design an inventory management system
Design an inventory management system for an e-commerce business. The system must support: - Updating stock when inventory is received, adjusted, or s...
Debug a Project Assignment Codebase
You are given a multi-file codebase and several CSV fixtures that implement a project assignment workflow. The system assigns people to projects based...
Diagnose Flight Delays and Burger Launch
You are given two analytics case questions. Part A: Flight delay analysis An airline wants to understand and predict delays. You receive a flight-leve...
Answer learning and challenge behavioral prompts
Behavioral prompts Prepare structured answers (with follow-ups) for the following: 1) Learning something new - Tell me about a time you had to learn s...
Design mobile check deposit system
System Design: Mobile Check Deposit for a Consumer Banking App Design a production-grade Remote Deposit Capture (RDC) feature that lets retail custome...
Implement spreadsheet undo/redo operations
Problem Design a data structure that simulates Undo/Redo for a simplified spreadsheet editor. A user performs a sequence of operations on cells. Each ...
Design a text editor with undo/redo
Design and implement a text document editor that maintains a single string of content and supports undo/redo of edits. Model each edit using the Comma...
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 (...
Model particle hits on a screen
A point source at (0, 0) emits particles toward an infinite vertical screen located at x = 1. For each particle, sample an angle theta uniformly from ...
Validate password and list rule violations
Problem You are given a password string p. Validate it against a set of rules and return all rules that the password violates. Rules 1. Length must be...
Handle security vs velocity conflicts across teams
Describe a time when you had to balance security requirements with business/product delivery speed, especially involving cross-team collaboration. Inc...
Can You Reach the Last Index?
You are given an array nums of non-negative integers. You start at index 0. From index i, you may jump to any index j such that i < j <= i + nums[i]. ...
Design API for split-stay combinations
Question Design an HTTP API endpoint that, given a requested date range and a collection of Airbnb listings with their availability, returns all valid...