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 RSS Feed and Temporary Mail
This interview included two system design prompts. 1. Design an RSS feed platform Design a service that periodically ingests RSS or similar publish...
Design a URL Shortener
Design a URL shortening service similar to Bitly. The system should support: - Creating a short URL for a given long URL - Redirecting a short URL to ...
Design Spring Boot for high availability and background work
System Design (Spring Boot) You are designing a Spring Boot application that must run reliably in production. 1. High availability & load balancing: H...
Determine order of alien alphabet
You are given a list of words sorted in lexicographic order according to an unknown ("alien") alphabet. Task Return one valid ordering of the unique c...
Answer range queries for alternating parity subarrays
Problem You are given an integer array nums of length n and q queries. Each query is a pair [l, r] (0-indexed, inclusive). A subarray nums[l..r] is ca...
Find viewing direction that sees most points
You are standing at the origin on a 2D plane. You are given a list of points points[i] = (xi, yi) (not necessarily distinct), and a viewing angle thet...
Measure platform success and drive adoption
Org-Level Impact / Platform Leadership Prompt You own an internal infrastructure/data platform. Questions 1. How do you measure whether the platform i...
Design and backtest a trading strategy
Minute-Level Mean-Reversion Strategy: Design, Backtest, Validation, and Significance Context You are given minute-level OHLCV data (open, high, low, c...
Design a crash-resilient file system
Prompt Design a resilient file system that can recover file contents correctly after a system crash (e.g., power loss / kernel panic). The interviewer...
Design a donations service with 3-day rolling totals
Design a service that ingests donations and serves rolling 3-day donation totals. Requirements Core features 1. Ingest donation events: - Each dona...
Design a Cryptocurrency Trading System with Third-Party Exchanges
Design a Cryptocurrency Trading System with Third-Party Exchanges Design a cryptocurrency trading platform that routes client orders to one or more th...
Present a project deep dive
Behavioral: End-to-End Project Deep Dive (Concise Slide Deck) In the project deep-dive round, the interviewer asks you to present one significant proj...
Compute Conv2D parameter counts
Parameter Count for a 2D Convolution Layer You are given a standard 2D convolution layer with: - Input channels: C_in - Output channels: C_out - Kerne...
Explain modeling challenges and fixes
Model Development Challenges: Detection, Alternatives, Solution, Evidence Context: In a technical screen for a Machine Learning Engineer, you are aske...
Design signals across power and clock domains
Question In a SoC with two power domains A and B, design the interface for a control signal signal_1 (a registered 1-bit control such as an enable/sta...
Answer general behavioral questions
Behavioral Interview Prompts (Software Engineer — Technical Screen) To prepare concise, high-impact answers, use STAR/CAR (Situation–Task–Action–Resul...
Debug a cache incident end-to-end
Incident Scenario: Elevated Latency and Surge in Cache Misses You are paged for elevated tail latency and a spike in cache misses in a microservice th...
Design a local activity counter service
System Design: Near-Real-Time Activity Counting Service Context Build a service that ingests high-throughput client events and provides near-real-time...
Build Friend Recommendations
You are given a social graph and a User class that stores a user id and the set of direct friends for each user. Complete a recommendation module with...
Answer common internship behavioral questions
You have ~25–30 minutes for behavioral questions (with possible follow-ups). Prepare strong, concrete answers (internship-level scope is fine) for: 1....