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 Engineer LockedWrite SQL for session analytics
This question evaluates SQL proficiency and data engineering competencies, including deduplication, joins, time-series aggregation, rolling-window cal...
Coding & Algorithms
20
0
180 people solved
Jan 17, 2026
Easy
Data ScientistInternEstimate free-trial conversion probability
Context A product offers a free trial. You are asked: “What is the probability of conversion for a group of people who started a free trial?” Data (as...
Analytics & Experimentation
5
0
43 people solved
Jan 17, 2026
Easy
Data ScientistHandle conflict and urgent shifting priorities
Answer the following behavioral questions with concrete examples from your experience: 1. Describe a conflict you had with a partner or teammate. What...
Behavioral & Leadership
10
0
98 people solved
Jan 17, 2026
Easy
Data ScientistMaximize watched duration under consecutive-sum limit
You have a list of videos in a feed. Video i has duration d[i] (positive integer). A user has an “attention span” limit A. You want to select a subset...
Coding & Algorithms
7
0
65 people solved
Jan 17, 2026
Easy
Data Scientist LockedWrite SQL using HAVING and window functions
This question evaluates SQL data manipulation competency, focusing on aggregation filtering with HAVING and the use of window functions for running co...
Data Manipulation (SQL/Python)
9
0
78 people solved
Jan 17, 2026
Easy
Data Scientist LockedDesign and evaluate a fraud detection strategy
This question evaluates fraud domain knowledge, quantitative model evaluation, metrics and diagnostic design, operational strategy formulation, segmen...
Analytics & Experimentation
6
0
98 people solved
Jan 17, 2026
Easy
Data ScientistImplement palindrome check and valid parentheses
You have 20–25 minutes per problem. Implement the following two functions and be prepared to explain your approach and time/space complexity. Problem ...
Coding & Algorithms
6
0
47 people solved
Jan 17, 2026
Easy
Data Scientist LockedMerge overlapping intervals per group in pandas
This question evaluates proficiency in time-series data manipulation and interval reasoning using pandas, including grouping, datetime handling, and i...
Data Manipulation (SQL/Python)
8
0
60 people solved
Jan 17, 2026
Easy
Data ScientistPresent pirated-usage findings to a PM
You computed (1) monthly % of shops using pirated themes and (2) monthly and cumulative estimated revenue loss from pirated themes. Explain how you wo...
Behavioral & Leadership
28
0
199 people solved
Jan 17, 2026
Medium
Product ManagerTell me about your fit
For a TikTok Product Manager interview, prepare a coherent career story. You may be asked to introduce yourself, explain why your background matches t...
Behavioral & Leadership
10
0
93 people solved
Jan 26, 2025
Medium
Data Scientist LockedPrint Org Chart by Level
This question evaluates the ability to model hierarchical data, work with tree/graph data structures, select traversal strategies, and analyze time an...
Coding & Algorithms
3
0
38 people solved
Jan 16, 2026
Hard
Software EngineerCompute nearest bathroom distance for each desk
You are given an m x n grid of characters containing only: - 'B' = bathroom - 'D' = desk - '_' = empty cell From any cell you may move one step up/dow...
Coding & Algorithms
13
0
163 people solved
Jan 16, 2026
Hard
Software EngineerDetect Trigger and Resolve Events
You are given transaction logs sorted by non-decreasing timestamp. Each log record has four fields: - timestamp: integer time in seconds - merchant_id...
Coding & Algorithms
4
0
56 people solved
Jan 15, 2026
Hard
Software Engineer LockedCompute expected days until no whole pills
This question evaluates understanding of probability and expected value, modeling of state-based stochastic processes (Markov chains), and the ability...
Coding & Algorithms
4
0
43 people solved
Jan 15, 2026
Medium
Software Engineer LockedDesign a Top-K trending service
This question evaluates skills in distributed system design, real-time stream processing, scalable aggregation, windowing semantics, and trade-offs ar...
System Design
6
0
119 people solved
Jan 15, 2026
Hard
Software Engineer LockedGenerate Available 30-Minute Time Slots
This question evaluates date/time arithmetic, interval and recurrence handling, edge-case reasoning, and test-case design within scheduling logic for ...
Coding & Algorithms
4
0
65 people solved
Jan 14, 2026
Medium
Software EngineerSenior+ LockedParse Requests and Compute Balances
This question evaluates input parsing, state management, data validation, and use of basic data structures to track user accounts, friend relationship...
Coding & Algorithms
4
0
48 people solved
Jan 14, 2026
Medium
Data ScientistDesign a Ride-Hailing ETA System
You are a Data Scientist at a ride-hailing company. Design an ETA system used in the rider and driver apps to estimate both pickup ETA and trip ETA. D...
Machine Learning
7
0
73 people solved
Jan 14, 2026
Medium
Software EngineerDesign a multi-channel notification system
Design a notification system that receives alert events from other internal systems and notifies all subscribed users through multiple channels (e.g.,...
System Design
7
0
135 people solved
Jan 14, 2026
Medium
Software EngineerDesign an API for pay computation with retries
You’ve implemented logic that computes a dasher’s pay from order event logs (events include timestamps and state transitions). Design an HTTP API to e...
Software Engineering Fundamentals
12
1
223 people solved
Jan 14, 2026