Interview Questions
Practice the exact questions companies are asking right now.
Questions
9.8k
Companies
511
Updated
08.16.2026
9.8k Questions 511 Companies08.16.2026
PLTCHK
"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"
_The_TaNk_
"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"
ChrisSenior SWE, LinkedIn
"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."
sleepy33
"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."
JakeSenior ML Engineer, Lyft
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
nuggetlord
"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."
CarlosFull Stack, Shopify
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
boba.tea.vibes
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
AndySWE-II, Google
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
couchpotato99
"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."
ShrutiData Engineer, Salesforce
"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."
midnightramen
"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."
BiancaFrontend Eng, Figma
"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."
tambrahm007
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
toa
"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."
Showing 20 results
Role
Medium
Software Engineer LockedKnight Dialer: Count Dialable Digit Sequences
This question evaluates a candidate's ability to model constrained state transitions with dynamic programming, using a knight's legal moves on a phone...
Coding & Algorithms
1
0
9 people solved
Jun 11, 2026
Medium
Software EngineerExplore an HTTP Maze
You are given an HTTP API that represents a maze-like forest. The entrance is available at GET /mirkwood. Each location in the forest is identified by...
Coding & Algorithms
3
0
43 people solved
Apr 7, 2026
Easy
Data Scientist LockedHow would you decide to cancel a TV show?
This question evaluates a data scientist's competencies in business analytics and strategic decision-making, including financial and valuation reasoni...
Analytics & Experimentation
7
0
116 people solved
Feb 12, 2026
Medium
Software Engineer4.1 Design a Live Streaming Platform
This is a classic system design question that tests your ability to handle real-time data at massive scale. Live streaming sits at the intersection of...
System Design
13
0
130 people solved
Jan 31, 2026
Medium
Data ScientistDiagnose Cold-Food Deliveries and Make a Launch Decision
You are the data scientist for a food-delivery marketplace. Customers are reporting that some orders arrive cold. The product team proposes an interve...
Analytics & Experimentation
11
0
77 people solved
May 7, 2026
Medium
Software EngineerHow do you explain work to non-technical partners?
Behavioral questions 1. Communicating with non-technical people: How do you explain a complex technical/ML topic to a non-technical stakeholder (e.g.,...
Behavioral & Leadership
7
0
67 people solved
Feb 12, 2026
Medium
Software EngineerImplement a Transactional Key-Value Store
Design an in-memory key-value store that supports transactions. Required operations: - set(key, value): assign or overwrite the value for a key. - get...
Coding & Algorithms
7
0
67 people solved
Apr 6, 2026
Medium
Site Reliability Engineer LockedTroubleshoot a Midnight Web Server Outage
This question evaluates a candidate's incident response, systems debugging, and root-cause analysis skills, focusing on log-driven investigation, Linu...
Software Engineering Fundamentals
14
0
112 people solved
Apr 6, 2026
Medium
Data ScientistSenior+How do you diagnose a ratio metric change
In an A/B test, the treatment group shows a statistically significant increase in a ratio metric: - CTR = clicks / impressions increased by +1.2% rela...
Analytics & Experimentation
27
0
214 people solved
Nov 24, 2025
Medium
Software EngineerSenior+ LockedDesign a Real-Time Online Chess Platform
Design the backend for a globally distributed real-time chess platform supporting moves, spectators, clocks, reconnects, and failover. Define authorit...
System Design
1
0
18 people solved
May 23, 2026
Medium
Data Scientist LockedTurn a Marketplace Data Insight into an Actionable Product Plan
Practice turning a marketplace data observation into an interview-ready product and analytics plan. The question tests problem framing, stakeholder al...
Analytics & Experimentation
2
0
15 people solved
May 23, 2026
Medium
Machine Learning Engineer LockedImplement Autoregressive Decoding Strategies
This question evaluates proficiency with autoregressive sequence generation, probabilistic sampling methods (greedy, top-k, top-p), softmax-based prob...
Coding & Algorithms
0
0
11 people solved
May 23, 2026
Medium
Data ScientistSenior+ AI LockedAnalyze Pirated Theme Usage
This question evaluates competency in temporal data manipulation, interval-overlap logic, aggregations and joins to calculate monthly usage metrics an...
Data Manipulation (SQL/Python)
6
1
58 people solved
May 23, 2026
Hard
Software Engineer LockedImplement Persistent Memoization LRU Cache
This question evaluates knowledge of memoization, LRU cache semantics, deterministic cache-key construction from positional and keyword arguments, JSO...
Coding & Algorithms
9
0
71 people solved
May 23, 2026
Medium
Software EngineerIntroduce yourself and discuss challenges
Behavioral Interview Prompt: 5‑Minute Self‑Introduction + Challenge (STAR) Context You are interviewing for a Software Engineer role and have an HR sc...
Behavioral & Leadership
8
0
89 people solved
Sep 6, 2025
Easy
Machine Learning EngineerInternExplain and test completion-rate gaps
In a food delivery marketplace, alcohol-related orders have a lower order completion rate than non-alcohol orders. Answer the following: 1. Propose se...
Machine Learning
25
0
281 people solved
Mar 9, 2026
Hard
Data ScientistPrevent data registration outage and reduce loss
Preventing Silent Failures in the Premium Registration Pipeline Context A premium registration pipeline silently failed for three months, causing thou...
Behavioral & Leadership
5
0
60 people solved
Oct 13, 2025
Hard
Data ScientistDesign robust A/B test with interference and seasonality
Experiment Design: Redesigned Onboarding with Network Effects and Weekly Seasonality Background You are launching a redesigned onboarding flow for a c...
Analytics & Experimentation
11
0
102 people solved
Oct 13, 2025
Hard
Data ScientistChallenge and validate assumptions
Vegan-Burger Launch: Assumptions at Risk, Validation, Sensitivity, and Experiment Plan Background You are evaluating the launch of a vegan burger acro...
Analytics & Experimentation
11
0
81 people solved
Oct 13, 2025
Medium
Machine Learning EngineerTrain and analyze a classifier
You are given a labeled dataset for binary classification. Implement an end-to-end Python solution that trains a classifier and analyzes it to a produ...
Data Manipulation (SQL/Python)
28
0
544 people solved
Jul 31, 2025