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 EngineerGenerate Account Email Notifications
You are building an email notification scheduler for user accounts. You are given: 1. A list of user accounts. Each account has: - account_id - ...
Coding & Algorithms
6
0
51 people solved
Apr 14, 2026
Medium
Machine Learning Engineer LockedDesign Features for Residual Volatility
This question evaluates competency in feature engineering for financial time-series, volatility forecasting after removing systematic market effects, ...
Machine Learning
5
0
65 people solved
Apr 14, 2026
Medium
Machine Learning EngineerSenior+ LockedBuild an LLM-driven text-game agent
This question evaluates a candidate's understanding of integrating large language models into interactive agents, including prompt design, game-state ...
Software Engineering Fundamentals
17
0
128 people solved
Dec 25, 2025
Medium
Machine Learning Engineer LockedDesign a Short-Video Recommendation System
This question evaluates competency in designing large-scale short-video recommendation systems, including machine learning model selection, candidate ...
ML System Design
9
0
95 people solved
Feb 28, 2026
Medium
Data ScientistSolve three algorithmic tasks in Python
You are given 120 minutes to implement three independent algorithmic tasks in Python. Each task specifies the required input/output behavior, the cons...
Coding & Algorithms
17
0
146 people solved
Jul 28, 2025
Easy
Data ScientistCompute probabilities and expectations in random processes
This is a rapid-fire probability and expectation round: a sequence of short, self-contained brain-teasers solved on a whiteboard. The interviewer expe...
Statistics & Math
24
0
291 people solved
Nov 19, 2025
Medium
Software Engineer LockedDesign Distributed Cloud Job Scheduling
This question evaluates proficiency in distributed systems design, resource scheduling and placement, stateful job orchestration, API and data-model d...
System Design
3
0
24 people solved
May 18, 2026
Hard
Machine Learning EngineerBuild and troubleshoot image classification and backprop
Build and troubleshoot image classification and backprop CIFAR-like Noisy Dataset: Baseline, Data Quality Plan, and First-Principles Backprop Context:...
Machine Learning
78
0
594 people solved
Jul 27, 2025
Hard
Software EngineerMeasure Meeting Coverage and Required Rooms
Measure Meeting Coverage and Required Rooms Given meeting intervals, compute both the total amount of time spent in at least one meeting and the minim...
Coding & Algorithms
0
0
9 people solved
Jun 28, 2026
Hard
Data Scientist LockedHow to target commute coupon users?
This question evaluates a candidate's proficiency in analytics, causal inference and experimentation design, user segmentation, and defining business ...
Analytics & Experimentation
10
0
83 people solved
Dec 12, 2025
Medium
Machine Learning EngineerDesign a Product or Video Recommendation System
Design a recommendation system for a large consumer platform. The platform may recommend either products in an e-commerce feed or videos in a media fe...
ML System Design
23
1
157 people solved
Dec 24, 2025
Medium
Software EngineerPython Language and Runtime Fundamentals
Python Language and Runtime Fundamentals Clarifying Questions to Ask - Should answers describe CPython specifically or Python language semantics acros...
Software Engineering Fundamentals
1
0
20 people solved
Apr 30, 2026
Medium
Data ScientistEstimate ads ranking revenue impact
You are the data scientist for an ads ranking team at a large social platform. The team has built a new ranking algorithm for feed ads. The new model ...
Analytics & Experimentation
55
0
370 people solved
Apr 30, 2026
Medium
Data ScientistNew Grad LockedEvaluate Promotions for Uber Eats Users
This question evaluates a data scientist's causal inference and experimentation competencies—including randomized trial design, treatment-effect estim...
Machine Learning
74
0
557 people solved
Apr 30, 2026
Easy
Software EngineerCalculate dice game win probability
Calculate dice game win probability Dice Game With Tie Rerolls: Probability You Eventually Win Context - Three players each roll a fair standard 6-sid...
Statistics & Math
31
1
428 people solved
Aug 4, 2025
Medium
Software EngineerImplement custom iterator classes
Implement custom iterator classes In a blank coding environment (no IDE assistance, no autocomplete), implement an iterator abstraction entirely from ...
Coding & Algorithms
26
0
198 people solved
Aug 4, 2025
Easy
Data ScientistCollaborate with PM and Eng as DS
Question As a Data Scientist working with Product Managers and Engineers: 1. How do you structure collaboration (requirements, timelines, ownership)? ...
Behavioral & Leadership
7
0
77 people solved
Dec 11, 2025
Medium
Software EngineerHow to Identify Best Battery Group
You have historical quality data for batteries that were randomly assigned to one of 5 groups. Each battery then goes through 3 different quality test...
Machine Learning
25
0
190 people solved
Oct 26, 2025
Medium
Data ScientistHow detect duplicate card records?
You are given a dataset of credit card transaction records and suspect that some records are duplicates. Discuss: - What real-world situations could c...
Machine Learning
4
0
92 people solved
Feb 26, 2026
Medium
Software Engineer LockedImplement common data-structure and JS tasks
This multi-part prompt evaluates core competencies in data structures and algorithms (time-based key-value design, duplicate removal in sorted linked ...
Coding & Algorithms
12
0
172 people solved
Feb 12, 2026