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
Software EngineerCompute max team size with a core interval
You are given n employees’ working-time intervals, where employee i works during the inclusive interval [startTime[i], endTime[i]]. You want to form a...
Coding & Algorithms
14
0
188 people solved
Dec 25, 2025
Medium
Software EngineerImplement deposit, withdraw, and transfer in a class
Problem Implement a class AccountService that supports basic money operations on accounts. Operations - deposit(accountId, amount) - withdraw(accountI...
Coding & Algorithms
11
0
107 people solved
Dec 25, 2025
Medium
Software EngineerDesign Slack-like messaging platform
Design a Slack-like team collaboration product. Core features: - Workspaces (tenants), users, and channels (public/private) - Direct messages (1:1 and...
System Design
12
0
99 people solved
Oct 31, 2025
Medium
Software EngineerSolve two set and graph problems
Implement solutions for the following two data-structure / algorithm problems. --- Problem 1: Friend-purchase recommendations You are given three enti...
Coding & Algorithms
18
0
167 people solved
Oct 31, 2025
Easy
Data ScientistFermi Estimation with Confidence Intervals: How Many Houses Does One Year of US Netflix Spending Buy?
Estimate how many houses could be purchased with the total amount that people in the United States spend on Netflix subscriptions in one year. You sta...
Machine Learning
2
0
35 people solved
Jul 26, 2025
Medium
Software EngineerExplain algorithm strategies and complexity
Explain algorithm strategies and complexity You are faced with a complex, potentially ambiguous coding problem. Describe how you would clarify require...
Coding & Algorithms
7
0
98 people solved
Jul 26, 2025
Medium
Software EngineerGenerate constrained NFT metadata
Generate constrained NFT metadata Given a set of trait types (e.g., background, eyes, hat), each with a list of allowed values, and a target count N, ...
Coding & Algorithms
15
0
120 people solved
Jul 26, 2025
Easy
Software EngineerImplement a multi-rover Mars controller
Problem Build a small command-line “Mars Rover Controller” program. Single rover (v1) A rover starts at coordinate (0, 0) on an infinite 2D grid and i...
Coding & Algorithms
34
0
386 people solved
Dec 23, 2025
Easy
Product AnalystExplain a project’s impact and product thinking
A Head of Product asks: 1. Pick one analytics/data science project you led end-to-end. 2. What was the product problem and why did it matter? 3. What ...
Behavioral & Leadership
15
0
109 people solved
Feb 22, 2026
Hard
Data ScientistCompute extinction probability in a branching process
Compute extinction probability in a branching process You start with 1 cell at time 0. Every minute, each existing cell independently transitions with...
Statistics & Math
7
0
121 people solved
Jul 23, 2025
Medium
Software Engineer LockedImplement Matrix Move and Logger
This question evaluates array manipulation and in-place algorithm design for handling overlapping submatrix moves, along with data-structure and time-...
Coding & Algorithms
4
0
43 people solved
Feb 22, 2026
Hard
Software EngineerNew Grad LockedMaintain a Stream Median
This question evaluates the ability to design and implement efficient online data structures and algorithms for maintaining dynamic order statistics a...
Coding & Algorithms
3
0
25 people solved
Feb 22, 2026
Medium
Software EngineerDetermine Reporting Relationships
Build an in-memory organization model that supports three operations on employee IDs: 1. add_manager(a, b): employee a is the direct manager of employ...
Coding & Algorithms
3
0
41 people solved
Feb 22, 2026
Medium
Data Scientist LockedMeasure fake account prevalence
This question evaluates a data scientist's competency in fraud measurement, statistical estimation, experimental design, and model evaluation for dete...
Analytics & Experimentation
4
0
44 people solved
Feb 22, 2026
Medium
Data Scientist LockedEvaluate an ads algorithm change
This question evaluates competency in experiment design, causal inference, metric selection, product analytics, and evaluation of ad-ranking systems, ...
Analytics & Experimentation
9
0
71 people solved
Feb 22, 2026
Medium
Software Engineer LockedExplain Python, Java, and Memory Management
This question evaluates understanding of programming language concepts and runtime behavior—covering typing disciplines, runtime models, performance a...
Software Engineering Fundamentals
4
0
37 people solved
Feb 22, 2026
Medium
Software Engineer LockedImplement Calendar, Tokenizer, and Meeting Optimizer
This question evaluates competencies in interval scheduling and overlap detection, custom string tokenization and parsing rules, and combinatorial opt...
Coding & Algorithms
5
0
78 people solved
Feb 22, 2026
Medium
Software EngineerDiscuss mutexes, memory alignment, polymorphism, idempotency
In this interview round, you are asked several conceptual software-engineering questions. Answer all parts clearly and concisely, using examples. --- ...
Software Engineering Fundamentals
6
0
75 people solved
Oct 28, 2025
Hard
Software EngineerFind Duplicate Files by Content
You are given a list of directory descriptions. Each description has the following format: root_directory file_name_1(content_1) file_name_2(content_2...
Coding & Algorithms
0
0
5 people solved
Feb 21, 2026
Hard
Data Scientist LockedSort a Nearly Sorted Array
This question evaluates algorithm design and analysis skills, focusing on handling nearly-sorted arrays and reasoning about time and space complexity ...
Coding & Algorithms
6
0
69 people solved
Feb 21, 2026