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
Frontend EngineerBuild a Web Calculator That Matches a Reference App
You are in a 45–60 minute phone screen (with screen sharing) for a Fullstack/Frontend role. The interviewer shares a link to a simple calculator web a...
Software Engineering Fundamentals
10
0
79 people solved
Sep 29, 2025
Medium
Software Engineer LockedImplement a rate limiter and a pub/sub API
This question evaluates competency in concurrency control, synchronization, API and low-level system design, and messaging system concepts by combinin...
Software Engineering Fundamentals
11
0
200 people solved
Jan 22, 2026
Medium
Software Engineer LockedWord Search in a Letter Grid
This question evaluates a candidate's ability to search for multiple target words within a grid of letters using depth-first traversal and backtrackin...
Coding & Algorithms
0
0
16 people solved
Jun 23, 2026
Medium
Software Engineer LockedDeep Equality of Two Records
This coding question tests a software engineer's ability to implement recursive structural comparison across nested, heterogeneous data types. It eval...
Coding & Algorithms
1
0
14 people solved
Jun 23, 2026
Medium
Data ScientistInternAnswer core probability and statistics questions
Answer the following interview-style probability/statistics questions. Provide formulas and short explanations. 1) Bayes’ rule: State Bayes’ rule. Giv...
Statistics & Math
56
0
371 people solved
Mar 5, 2026
Easy
Software Engineer LockedDesign a game recommendation modeling approach
This question evaluates proficiency in end-to-end machine learning system design for recommender systems, including product goal and target definition...
ML System Design
15
0
150 people solved
Jan 14, 2026
Easy
Data ScientistInternHow would you answer a DS video interview?
Question You are interviewing for a Data Scientist Intern role at TransUnion. The technical screen is an asynchronous (one-way) video interview: you a...
Behavioral & Leadership
15
0
133 people solved
Feb 3, 2026
Medium
Software Engineer AI LockedCompare Complete and Partial Poker Hands
This question evaluates algorithmic problem-solving, combinatorial reasoning about incomplete information, and the ability to encode domain-specific r...
Coding & Algorithms
6
0
44 people solved
May 21, 2026
Medium
Software EngineerDesign a highly reliable account balance system
Scenario You are designing a backend service that stores and updates user account balances (like a wallet/bank ledger). The system must be highly reli...
System Design
45
0
315 people solved
Dec 25, 2025
Medium
Software Engineer LockedDesign a Cloud File Storage and Sync Service (Google Drive)
This question asks for the end-to-end design of a cloud file storage and sync service, evaluating a candidate's grasp of distributed systems fundament...
System Design
2
0
26 people solved
Jun 11, 2026
Medium
Software Engineer LockedDot Product of Two Vectors (Dense, then Sparse)
This question assesses proficiency in array manipulation and algorithmic efficiency by asking for a vector dot product, first over dense arrays and th...
Coding & Algorithms
1
0
14 people solved
Jun 11, 2026
Medium
Frontend EngineerSenior+Run Promise Tasks with Bounded Concurrency
Run Promise Tasks with Bounded Concurrency The source reports a pure TypeScript or JavaScript coding round involving Promises, but it does not preserv...
Software Engineering Fundamentals
4
0
56 people solved
May 11, 2026
Medium
Frontend EngineerSenior+Build a Debounced Autocomplete Search Bar
Build a Debounced Autocomplete Search Bar Design and implement an autocomplete search bar that waits briefly after typing before requesting suggestion...
Software Engineering Fundamentals
3
0
39 people solved
May 11, 2026
Medium
Data ScientistDetermine When a Quadratic Has Finite Minimum
Consider the unconstrained real-valued optimization problem \[ \min_{x \in \mathbb{R}^n} f(x) = x^\top Qx + c^\top x, \] where \(Q \in \mathbb{R}^{n \...
Machine Learning
6
0
81 people solved
Feb 17, 2026
Hard
Software EngineerSenior+Implement a Half-Open Interval Range Module
Implement a Half-Open Interval Range Module Implement a module that tracks subsets of the real-number line using half-open intervals [left, right). Pr...
Coding & Algorithms
1
0
19 people solved
Jul 5, 2026
Medium
Machine Learning Engineer LockedMinimum Canisters to Top Up an Exact Target
This question evaluates a candidate's grasp of dynamic programming, specifically the unbounded knapsack (coin change) pattern for finding the minimum ...
Coding & Algorithms
1
0
16 people solved
Jun 22, 2026
Easy
Software EngineerCount Complete Highway Journeys from Toll Logs
Count Complete Highway Journeys from Toll Logs Each toll record is (timestamp, plate, location, booth_type). booth_type is ENTRY, MAINROAD, or EXIT. T...
Coding & Algorithms
0
0
11 people solved
Jul 19, 2026
Medium
Data EngineerDesign teleoperations data models and pipelines
You work on a fully autonomous robotaxi service. Passengers can request rides, get picked up, and get dropped off. During trips, the robotaxis are con...
System Design
9
0
86 people solved
Apr 4, 2026
Hard
Data Scientist LockedExplain Bootstrap and Statistical Inference
This question evaluates a data scientist's competence with resampling methods (bootstrap), uncertainty quantification and hypothesis testing (variance...
Statistics & Math
43
0
306 people solved
Dec 29, 2025
Easy
Data ScientistAnalyze member video posting behavior by country
Question You are given two tables describing LinkedIn members and the videos they upload. Write SQL (and optionally Python where noted) to answer the ...
Data Manipulation (SQL/Python)
8
1
119 people solved
Feb 1, 2026