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 EngineerDesign low-latency large-scale hotel booking system
You are asked to design the backend for a large-scale hotel booking system that runs behind a very high-traffic consumer app (think a TikTok-like app ...
System Design
17
0
166 people solved
Nov 12, 2025
Medium
Software EngineerSolve set equality and ad log top‑K
Problem Set (Coding) 1) Check whether two sets are equal You are given two integer arrays A and B that represent sets, except they may contain duplica...
Coding & Algorithms
19
0
198 people solved
Nov 11, 2025
Medium
Software EngineerDetermine if subarray sums to target
You are given an array of non-negative integers and a non-negative integer target. Determine whether there exists a contiguous subarray (continuous se...
Coding & Algorithms
7
0
60 people solved
Nov 11, 2025
Medium
Software EngineerFind users with at least one valid session
You are given: - A list of log entries logs, where each entry is a string in the format: ` "userId action timestamp" ` - userId is a non...
Coding & Algorithms
6
0
58 people solved
Nov 11, 2025
Hard
Software EngineerFind path between two nodes in a binary tree
Problem Given a binary tree and two target nodes a and b, return the simple path from a to b (inclusive) as an ordered list of node values. - The path...
Coding & Algorithms
6
0
46 people solved
Nov 10, 2025
Hard
Product ManagerShould Meta build accessible VR?
You are a Product Manager in Meta's New Product Introduction organization for VR hardware. The team is considering an accessibility-focused VR experie...
Product Design & Strategy
3
0
45 people solved
Apr 10, 2024
Easy
Data Scientist LockedDesign metrics and A/B test for maps and ETA
This question evaluates proficiency in metrics design, causal inference, and experimentation for product and marketplace features, specifically testin...
Analytics & Experimentation
18
0
193 people solved
Nov 9, 2025
Medium
Data EngineerUser Activity Analytics: Unique Users per Activity and Average Time on Site
User Activity Analytics You are given a collection of records, where each record captures a single user's action on a website. Each record is a dictio...
Coding & Algorithms
0
0
9 people solved
May 15, 2025
Medium
Machine Learning EngineerDescribe a recent project and your biggest challenge
Behavioral questions You have 5–10 minutes to answer, using a structured approach (e.g., STAR). 1. Self-introduction: Give a concise overview of your ...
Behavioral & Leadership
2
0
41 people solved
Nov 8, 2025
Easy
Data ScientistMedian, Variance, and Linear Trend of a Daily Temperature Dataset
Median, Variance, and Linear Trend of a Daily Temperature Dataset You are given n daily temperature readings collected in New York City. The data is a...
Coding & Algorithms
0
0
8 people solved
May 13, 2025
Easy
Data ScientistCompute early signals for user retention
You are given two tables that track signups and user transactions. Tables users - user_id (STRING, PK) — unique user - signup_ts (TIMESTAMP) — time th...
Data Manipulation (SQL/Python)
13
2
120 people solved
Nov 6, 2025
Easy
Data ScientistShould you play a dice payout game?
Two players each roll a fair six-sided die once. - If you win (your roll > opponent’s roll), the opponent pays you $n. - If the opponent wins or it’s ...
Statistics & Math
9
0
69 people solved
Nov 3, 2025
Medium
Data ScientistHow to decide if users need a new feature
You are a Data Scientist at a social app. The product team proposes a new in-app feature (e.g., a new sharing surface). You have event-level data and ...
Analytics & Experimentation
3
0
35 people solved
Nov 2, 2025
Medium
Software Engineer LockedProcess multi-currency payments with fees
This question evaluates a software engineer's competency in precise integer arithmetic and rounding semantics, multi-currency FX conversion with basis...
Coding & Algorithms
3
0
36 people solved
Nov 2, 2025
Medium
Software EngineerFind K-th Largest and Longest Vacation
Solve the following two coding problems. 1. Find the k-th largest element Given an integer array nums and an integer k, return the element that wou...
Coding & Algorithms
3
0
30 people solved
Nov 1, 2025
Medium
Machine Learning EngineerBuild Naive Bayes spam classifier with F1
You are given a text classification dataset for spam detection (binary labels: spam vs not_spam) in a Jupyter notebook environment. Task 1. Preprocess...
Machine Learning
6
0
73 people solved
Nov 1, 2025
Medium
Machine Learning EngineerDetermine if chasing points will meet
You are given N points in 2D, indexed 0..N-1, forming a cycle. - At time t = 0, point i is at coordinates (xi, yi). - All points move simultaneously a...
Coding & Algorithms
8
0
84 people solved
Nov 1, 2025
Easy
Data Scientist LockedCompute Bayes probability for fake accounts
This question evaluates Bayesian reasoning and probabilistic modeling skills, including conditional probability, base-rate effects, detector character...
Statistics & Math
14
1
105 people solved
Nov 1, 2025
Medium
Data ScientistCompute probability last passenger gets own seat
There are 100 passengers boarding a plane with 100 seats, numbered 1 to 100. Passenger i (for 1 ≤ i ≤ 100) has a ticket for seat i. The boarding proce...
Coding & Algorithms
2
0
40 people solved
Nov 1, 2025
Medium
Data ScientistFind smallest N for 5-and-21 sums
You are given two positive integers: 5 and 21. We say a positive integer x is representable if it can be written in the form \[ x = 5a + 21b \] for so...
Coding & Algorithms
2
0
27 people solved
Nov 1, 2025