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."
Answer hiring manager behavioral questions
Hiring manager round: behavioral questions Prepare structured answers to the following questions (with likely follow-ups). Use concrete examples from ...
Design a fraud detection system
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Design a URL Shortener
Design a URL-shortening service similar to TinyURL. The service should accept a long URL and return a short code, and later redirect requests for that...
Implement course scheduling and rate limiter analysis
You are given two independent coding problems. --- Problem 1: Course Scheduling You are planning to take a set of courses and are given prerequisite r...
Design Transaction Data Quality Checks
You own data quality for the same credit-card transaction dataset. transactions | column | type | description | |---|---|---| | transaction_id | integ...
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...
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...
Implement an in-memory SQL-like table
Implement a simplified in-memory SQL-like database for a single table. You should support the following operations on a table with a fixed schema (a l...
Design a Book Purchase Broker
Scenario Design a system that accepts a user's request to buy a book by title, ISBN, or another identifier. The request includes a maximum target pric...
Spreadsheet Formula Engine with Cycle Detection
Implement a Spreadsheet class that supports cells holding either a literal integer or a formula that references other cells. This is the core of a spr...
Design a Slack-like real-time messaging system
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Describe Key Behavioral Examples
Prepare to answer behavioral questions based on past internship or project experience. Common prompts include: 1. Tell me about a time when you disagr...
Design a key-value store
System Design: Durable Key–Value Store Design a single-node, embeddable key–value store library with a simple API that must remain correct and durable...
Implement timestamped task management system APIs
You are implementing an in-memory Task Management System. All API methods are called with a timestamp representing the logical time when the operation...
Build a Local URL Shortener
Implement a local URL shortener that runs on a single machine. Design a small library or service with two core operations: - shorten(long_url) -> shor...
Explain Bootstrap and Statistical Inference
Answer the following statistics questions at interview depth: - What is the bootstrap? Describe the resampling procedure, when it is useful, and what ...
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...
Debug and harden a driver-selection component
Debugging Exercise: “Pick Dasher” You are given a small codebase for selecting a dasher (driver) using a heap/priority-queue–like structure. The curre...
Implement 2048 tilt move
Problem: Implement a 2048 “tilt” (move) operation You are given a 4×4 board for the game 2048. Each cell contains either 0 (empty) or a power of two (...
Explain virtual machines and concurrency basics
Topics Answer at a senior-engineer depth. Use diagrams or step-by-step reasoning as needed. 1) Virtual machines (VMs) - What is a VM and what problem ...