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."
Solve probability and stopping questions
Answer the following independent interview questions: 1. Let X and Y be independent random variables, each distributed Uniform(0,1). Find the probabil...
Answer Amazon-style behavioral questions
You are interviewing for a role at Amazon and are asked the following behavioral questions. Answer each using the STAR method (Situation, Task, Action...
Design an A/B test with causal inference
A/B Test Design: Checkout Nudge (Guest-Level Randomization) You own experimentation for an e-commerce checkout flow. You're launching a checkout nudge...
Answer conflict, tight deadline, and mentorship prompts
Behavioral Interview Prompts Answer the following with specific examples from your experience: 1. Conflict: Tell me about a time you had a conflict wi...
Design a Credit Scoring Platform
Design a credit-scoring platform for 300 million users. The platform can obtain user credit data from external credit bureaus. It should ingest bureau...
Choose Your Workplace Style
You are taking a forced-choice workplace-style assessment for a Software Engineer role. Each item contains three positive statements. For each item: 1...
Find Optimal Property Combination
You are building a reservation-matching system for short-term rentals. Each property has: - id: a unique identifier - neighborhood: the neighborhood w...
Analyze Temperatures and Update Regression
You are given historical daily temperature data for New York City and several nearby towns. Each row contains a date, the NYC temperature, and the tem...
Compute Minimum Task Completion Time
You are given n tasks numbered from 0 to n - 1. Each task i takes durations[i] units of time to execute. You are also given a list of directed depende...
Implement an Alternating Tic-Tac-Toe Game
Implement a Tic-Tac-Toe game for two players. Requirements: 1. The board is a standard 3 x 3 grid. 2. Players do not need to be passed into each move....
Design Video Call Analytics Tables
You are building analytics tables for Discord video calls. Video-call activity is recorded from both client-side and server-side logs. Design a data m...
Implement core puzzle/array/grid routines
You may be asked to solve one or more of the following coding exercises (write clean, testable code; discuss time/space complexity): 1) Jigsaw assembl...
Design camera-footage upload with custody chain
System design prompt You’re building a backend service for uploading recorded body-camera / dashcam footage from client devices (often on unreliable n...
Design alerting for application-to-exchange mappings
Problem: Alerting design for application→exchange mappings You are building a service that receives an ordered stream of mapping events: - register(ap...
Design a model downloader
Design a system that distributes machine learning model artifacts from centralized storage to a large fleet of inference servers. The system should su...
Design Slack-like chat system
Question Design the chat subsystem for an app like Slack/Discord. State your assumptions (scale, retention, consistency needs) and propose an end-to-e...
Explain seasons and compound interest
Answer the following basic reasoning questions: 1. Why is summer generally hotter than winter? 2. Suppose you invest $1,000 at a 100% annual interest ...
Calculate Triangle Probability From Broken Stick
A stick of length 1 is broken into three pieces by choosing two cut points independently and uniformly at random along the stick, then sorting the two...
Design a delivery cost system
Design an object-oriented, in-memory Delivery Cost System for a food-delivery company. Drivers register with an hourly rate, completed deliveries are ...
Count White Balls After K Steps
You are given a ring of N positions indexed from 0 to N-1. - At each position i, there is initially one ball whose color is either white or black. - E...