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
Hard
Software EngineerDesign a global restaurant menu update system
Design a menu update system for a global chain of restaurants. Context: - The chain operates in many countries. - Each restaurant may have multiple ki...
System Design
14
0
157 people solved
Nov 12, 2025
Medium
Software EngineerImplement a snapshotable set with iterators
Implement a SnapshotSet data structure with the following API: add(x), remove(x), contains(x), snapshot() -> sid, and iterate(sid) -> iterator over th...
Coding & Algorithms
34
0
504 people solved
Aug 11, 2025
Medium
Software EngineerNew GradCount Good Numbers up to a Limit
Count Good Numbers up to a Limit A positive integer is good when all of the following hold: 1. Its decimal representation contains no digit 0. 2. No d...
Coding & Algorithms
1
1
13 people solved
Apr 26, 2026
Medium
Software EngineerSenior+ LockedImplement Cache, Undo, and DFS
This question evaluates implementation skills in data structures, algorithmic complexity, and state-management patterns by combining a timed in-memory...
Coding & Algorithms
3
0
54 people solved
Apr 26, 2026
Medium
Data Scientist LockedExplain linear regression and Transformer fundamentals
This question evaluates core competencies in statistical modeling and deep learning architecture, specifically linear regression (optimization objecti...
Machine Learning
6
0
59 people solved
Jan 14, 2026
Medium
Data Scientist LockedHow to evaluate new listing notifications?
This question evaluates a data scientist's competency in experimental design, causal inference, metric selection (primary, secondary, guardrail), and ...
Analytics & Experimentation
4
0
37 people solved
Mar 2, 2026
Hard
Data EngineerWrite SQL for car rental utilization by city
SQL / Data Query Prompt (Car Rental) You are given four tables: user - user_id location - location_id - city car - car_id - car_size (e.g., compact, m...
Coding & Algorithms
12
2
187 people solved
Dec 1, 2025
Medium
Frontend EngineerBuild a Streaming Chat Input
Implement a minimal front-end chat interface, similar to a stripped-down AI assistant (think a bare-bones ChatGPT). The user types a prompt, submits i...
Coding & Algorithms
21
0
191 people solved
Apr 25, 2026
Medium
Machine Learning Engineer AI LockedSimulate a rover fleet
This question evaluates skills in simulation design, state management, grid-based movement logic, and handling constraints such as obstacles, boundari...
Coding & Algorithms
2
0
36 people solved
Mar 1, 2026
Medium
Machine Learning EngineerDescribe an ML system you built
Describe a machine learning system that you previously designed, built, or owned. Cover the problem statement, business goal, data sources, feature en...
Behavioral & Leadership
5
0
82 people solved
Mar 1, 2026
Medium
Software Engineer LockedRebalance shard ranges under overlap limit
This question evaluates skills in interval and range management, constraint enforcement, and algorithmic problem solving related to overlapping intege...
Coding & Algorithms
41
0
293 people solved
Mar 1, 2026
Medium
Software EngineerSenior+How do you manage performance and disagreements?
Manager behavioral prompts Answer the following as a people manager (or manager-level tech lead). Use real examples where possible. 1. Scope and owner...
Behavioral & Leadership
7
0
119 people solved
Mar 1, 2026
Medium
Data EngineerExplain production model drop to a PM
Role Play: Communicate Model Degradation to a Non-Technical PM You are a data scientist. A PM says: > “Your model performed great on the validation se...
Behavioral & Leadership
9
0
88 people solved
Mar 1, 2026
Medium
Data EngineerWrite SQL using joins and window functions
SQL Coding: Rank within Groups with Joins You are given two tables: accounts - account_id (string) - customer_id (string) - segment (string) — e.g., "...
Coding & Algorithms
28
1
194 people solved
Mar 1, 2026
Medium
Software EngineerFind accessible devices via nested memberships
Problem You are given an access model with nested groups: - A group can contain users and also contain other groups (subgroups). - A user can own or b...
Coding & Algorithms
14
1
100 people solved
Mar 1, 2026
Medium
Software Engineer LockedValidate a Parent-Child Forest
This question evaluates understanding of graph theory concepts—specifically rooted trees, parent-child relationships, cycle detection, and node in-deg...
Coding & Algorithms
1
0
12 people solved
May 27, 2026
Easy
Data Engineer LockedSolve SQL and PySpark Data Tasks
This question evaluates proficiency in SQL query design and PySpark DataFrame manipulation, covering aggregation, filtering, joins, time and numeric f...
Coding & Algorithms
1
0
18 people solved
May 27, 2026
Hard
Data ScientistPresent Piracy Trends to a PM
You ran the analyses above and got two preliminary findings: - the monthly pirated-theme usage rate appears to rise from 0% to 100% over the observed ...
Analytics & Experimentation
8
0
56 people solved
Jan 12, 2026
Medium
Software EngineerDesign a Top-K search words service
Scenario Design a service that tracks user search queries and returns the Top-K most searched words/queries. Requirements Functional - API to record a...
System Design
22
0
159 people solved
Oct 20, 2025
Hard
Software EngineerReason About CPU Microarchitecture and Simulator Design
Reason About CPU Microarchitecture and Simulator Design Answer the following systems questions for a modern out-of-order CPU. State architectural assu...
Software Engineering Fundamentals
1
0
9 people solved
Mar 27, 2026