Interview Questions
Practice the exact questions companies are asking right now.
Questions
10.0k
Companies
520
Updated
08.21.2026
10.0k Questions 520 Companies08.21.2026
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
Data ScientistDiagnose Multicollinearity in Flight Delay Prediction Model
Diagnose Multicollinearity in a Flight Delay Prediction Model You are building a model that predicts whether a flight will be delayed using historical...
Machine Learning
72
0
254 people solved
Jul 12, 2025
Medium
Software EngineerDesign an in-memory key-value store using maps
Design a low-level key-value store library (like an embedded storage engine) under an interview constraint: you may use only map/dictionary-like data ...
System Design
20
0
146 people solved
Nov 21, 2025
Hard
Software EngineerImplement LRU cache and prime products array
You are given two separate coding tasks. Task 1: Implement an LRU cache Implement an in-memory cache with a fixed capacity that evicts the least recen...
Coding & Algorithms
13
0
99 people solved
Oct 28, 2025
Medium
Software EngineerExplain C++ Inline Semantics and Trade-Offs
Explain C++ Inline Semantics and Trade-Offs Explain what the C++ inline keyword means, how that differs from a compiler actually substituting a functi...
Software Engineering Fundamentals
1
0
16 people solved
May 15, 2026
Medium
Software Engineer LockedDesign a Digital Asset Custody Service
Prepare for a Anchorage Digital system design interview about design a digital asset custody service. This question focuses on requirements, architect...
System Design
2
0
29 people solved
May 15, 2026
Medium
Frontend EngineerSenior+ LockedDesign High-Throughput Messaging Infrastructure
This question evaluates understanding of high-throughput messaging infrastructure, including database optimization strategies, message queue architect...
System Design
4
0
51 people solved
May 15, 2026
Easy
Software Engineer LockedGenerate Per-Position Guess Feedback
This question evaluates string-processing skills, array manipulation, and handling of duplicate character counts to produce per-position feedback. It ...
Coding & Algorithms
1
0
11 people solved
May 15, 2026
Medium
Data ScientistAnalyze Knights-and-Knaves Dialogue Variants
Analyze Knights-and-Knaves Dialogue Variants Knights and Knaves: Two Statements from B Context On an island, every person is either a knight (always t...
Statistics & Math
7
0
82 people solved
Aug 1, 2025
Medium
Software Engineer LockedDesign a Twitter hashtag metrics aggregator
This question evaluates competency in designing scalable, low-latency real-time stream processing and aggregation systems, covering concepts such as w...
System Design
12
0
115 people solved
Dec 15, 2025
Medium
Software EngineerRecommend top-K movies from similarity graph
Movie Recommendation: Top K You are building a simple movie recommendation feature. Input - A set of movies 0..(M-1). - An undirected similarity graph...
Coding & Algorithms
68
1
534 people solved
Dec 15, 2025
Medium
Software EngineerCompute Jaccard similarity between two strings
Jaccard Similarity of Two Strings Given two strings a and b, compute their Jaccard similarity based on token sets. Tokenization rules - Convert to low...
Coding & Algorithms
11
0
157 people solved
Dec 15, 2025
Medium
Machine Learning EngineerExplain ML evaluation, sequence models, and optimizers
Scenario An interviewer is deep-diving into an ML project you built (you can assume it is a supervised model unless specified otherwise). They want yo...
Machine Learning
7
0
81 people solved
Dec 15, 2025
Hard
Machine Learning EngineerDesign a regional surge pricing strategy
Scenario You operate a ride-hailing platform. You need to design a system that sets surge multipliers (dynamic pricing) for a given region. Task Desig...
System Design
37
0
263 people solved
Dec 15, 2025
Hard
Machine Learning EngineerDesign a search query autocomplete system
Question Design a search autocomplete system that suggests completions as the user types. Requirements - Sub-100ms latency per keystroke. - Suggestion...
System Design
23
0
259 people solved
Dec 15, 2025
Easy
Machine Learning Engineer LockedExplain Core ML Fundamentals
This question evaluates mastery of core machine learning fundamentals—loss functions and derivatives, regularization and overfitting mitigation, activ...
Machine Learning
3
0
50 people solved
Jan 10, 2026
Medium
Software EngineerHow do you deliver when time is tight?
Scenario You are assigned a project with an aggressive deadline and limited time/resources. Question How would you ensure the project gets delivered o...
Behavioral & Leadership
11
0
96 people solved
Jan 10, 2026
Medium
Software Engineer LockedDesign nearest-available-taxi lookup with updates
This question evaluates the ability to design scalable, low-latency geospatial lookup services under high update and query rates, assessing skills in ...
System Design
15
0
202 people solved
Jan 10, 2026
Easy
Data ScientistHow would you investigate a metric decline?
Scenario You are a Data Scientist supporting a consumer marketplace product. A key business metric (e.g., orders/day, conversion rate, revenue, profit...
Analytics & Experimentation
20
0
146 people solved
Feb 6, 2026
Medium
Software EngineerDesign a Ride-Hailing Matching System
Design a ride-hailing matching system similar to a taxi or rideshare application (e.g. Uber, Lyft, DiDi). The interview focuses on the driver-location...
System Design
17
0
132 people solved
Apr 9, 2026
Medium
Software EngineerSenior+Design Queue And Taxi Matching Services
Answer both independent system design prompts. For each one, clarify requirements, propose APIs, describe core data models, explain the architecture, ...
System Design
3
0
32 people solved
Apr 9, 2026