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
Easy
Data ScientistSenior+ LockedClean and Merge Housing Data
This question evaluates data cleaning, type coercion, robust merge operations, and missing-data imputation skills within tabular datasets, emphasizing...
Data Manipulation (SQL/Python)
2
0
50 people solved
Feb 28, 2026
Medium
Machine Learning EngineerDiscuss Research Experience and Challenges
Behavioral interview focused on prior research experience. Be prepared to describe one or two research projects you personally drove, including the pr...
Behavioral & Leadership
6
0
70 people solved
Feb 28, 2026
Easy
Software EngineerDesign org chart lookup with preprocessing
You are given an organization chart represented as a list of pairs [managerName, directReportName]. Names are unique strings. The data may form a fore...
Coding & Algorithms
3
0
36 people solved
Feb 28, 2026
Hard
Data EngineerWrite SQL to analyze CA residency history
You have two SQL tables. Table 1: user_info (current snapshot) - id (user id) - shard (partition column) - name - country - state - created_date Table...
Software Engineering Fundamentals
9
0
96 people solved
Feb 28, 2026
Medium
Data AnalystInternHow would you handle common analyst workplace scenarios?
You are interviewing for an Analyst role. The online assessment (OA) focuses on behavioral/situational judgment and written communication rather than ...
Behavioral & Leadership
12
0
160 people solved
Dec 12, 2025
Medium
Software EngineerSolve tree distance and design file system
Solve tree distance and design file system Given a binary tree, find the maximum distance between two 'alive' nodes, where 'alive' nodes are initially...
Coding & Algorithms
5
0
67 people solved
Aug 4, 2025
Easy
Data ScientistDetermine knights and knaves roles
Determine knights and knaves roles Knights and Knaves Logic Puzzle Context On an island, each person is either: - Knight: always tells the truth. - Kn...
Statistics & Math
7
0
53 people solved
Aug 4, 2025
Medium
Data ScientistIdentify Risks and Improve Imputation Class Implementations
Identify Risks and Improve Imputation Class Implementations Scenario You are reviewing three custom Python imputation classes intended for use in a sc...
Machine Learning
7
0
73 people solved
Aug 4, 2025
Hard
Data ScientistEvaluate Account-Partner Onboarding with Success Metrics
Evaluate Account-Partner Onboarding with Success Metrics Scenario DoorDash's account-partner team acquires new merchants onto the marketplace, and lea...
Analytics & Experimentation
88
0
273 people solved
Aug 4, 2025
Medium
Data ScientistEvaluate Models for Credit-Risk Scoring at Capital One
Evaluate Models for Credit-Risk Scoring at Capital One Scenario You are building a production-grade credit-risk scoring model (predicting probability ...
Machine Learning
21
0
76 people solved
Aug 4, 2025
Medium
Data ScientistAnalyze Rider Behavior in Dynamic-Pricing Trial
Analyze Rider Behavior in Dynamic-Pricing Trial Dynamic-pricing trial: rider behavior Context (assumptions made explicit) - Each day the rider has two...
Statistics & Math
23
1
126 people solved
Aug 4, 2025
Medium
Data ScientistDetermine Key Metrics for Spend-Tracker Launch Decision
Determine Key Metrics for Spend-Tracker Launch Decision A/B Decision Framework: Spend-Tracker Feature Context A fintech app ran an A/B test (Test vs. ...
Analytics & Experimentation
78
0
221 people solved
Aug 4, 2025
Medium
Data AnalystHow adapt to Google Sheets?
You are interviewing for a pricing analyst role. The interviewer says that you do not have direct pricing experience, and that much of the team's day-...
Behavioral & Leadership
6
0
47 people solved
Jan 18, 2026
Medium
Software EngineerSenior+Design a Real-Time Auction Platform
Design a real-time online auction platform. Users can browse an auction, submit bids, and see the current highest bid and bid history update live. Tra...
System Design
2
0
43 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
Hard
Software EngineerHow do you handle conflicting interviewer hints?
In a technical interview, you are solving a problem and have a clear approach in mind. The interviewer offers a hint that appears to push you toward a...
Behavioral & Leadership
8
0
130 people solved
Nov 6, 2025
Medium
Data ScientistSenior+ LockedDesign and Monitor a Multi-Country Parameter Experiment
Prepare for experimentation questions spanning sample size, duration, variance reduction, multi-arm parameter tuning, sequential monitoring, and cross...
Analytics & Experimentation
1
0
10 people solved
Jun 7, 2026
Easy
Data ScientistCompute expectations and test fairness for coin flips
You are analyzing repeated flips of a (possibly unfair) coin. Setup Let the probability of Heads be \(p\) (unknown in general). Assume flips are indep...
Statistics & Math
13
0
101 people solved
Sep 1, 2025
Medium
Software EngineerNew GradRemove Repeated Character Groups
You are given a string s and an integer k. Repeatedly remove any contiguous group of k identical characters. After a removal, the remaining parts of t...
Coding & Algorithms
5
0
41 people solved
Apr 13, 2026
Medium
Software Engineer LockedImplement Social Graph Snapshot Queries
This question evaluates understanding of graph data structures, query-efficient indexing, and algorithmic trade-offs for static directed graphs, inclu...
Coding & Algorithms
5
0
64 people solved
Apr 13, 2026