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
Hard
Software Engineer LockedMaximize Minimum Scaled Value
This question evaluates algorithmic optimization and resource-allocation skills, focusing on integer scaling under a global budget to maximize the min...
Coding & Algorithms
2
0
42 people solved
Jan 16, 2026
Medium
Software Engineer LockedTrack Customer Referral Revenue
This question evaluates understanding of dynamic data structure design and algorithms for maintaining aggregated metrics over a referral tree, specifi...
Coding & Algorithms
5
0
45 people solved
Jan 16, 2026
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
39 people solved
Jan 16, 2026
Medium
Software Engineer LockedImplement cd and merge intervals
This question evaluates proficiency in filesystem path normalization (string parsing, tokenization, and edge-case handling) and interval-merging algor...
Coding & Algorithms
3
0
59 people solved
Jan 16, 2026
Medium
Data ScientistHow would you evaluate adding video ads?
You are a data scientist for a free-to-play mobile game. The product team wants to introduce video ads (e.g., rewarded videos and/or interstitial vide...
Analytics & Experimentation
6
0
72 people solved
Nov 4, 2025
Medium
Software EngineerImplement spreadsheet undo/redo operations
Problem Design a data structure that simulates Undo/Redo for a simplified spreadsheet editor. A user performs a sequence of operations on cells. Each ...
Coding & Algorithms
53
0
437 people solved
Nov 4, 2025
Medium
Product ManagerApply GenAI to Business Messaging
Product Strategy Prompt: Apply GenAI to Enterprise Business Messaging Explain what generative AI is and how you would apply it to an enterprise busine...
Product Design & Strategy
3
0
53 people solved
Jul 1, 2025
Medium
Software EngineerImplement a Maximum-Tracking Stack
Design a stack-like data structure that supports the following operations efficiently: - push(x): Push integer x onto the stack. - pop(): Remove and r...
Coding & Algorithms
1
0
21 people solved
Jan 15, 2026
Medium
Software Engineer LockedAdd Two Forward-Order Lists
This question evaluates linked list manipulation and numerical addition represented in forward-order digit encoding, testing competency in handling di...
Coding & Algorithms
3
0
54 people solved
Jan 15, 2026
Easy
iOS Engineer LockedFlatten Nested Comments
This question evaluates proficiency with tree traversal and hierarchical data manipulation, specifically recursion versus iterative approaches and enf...
Coding & Algorithms
3
0
54 people solved
Jan 15, 2026
Medium
Data Scientist LockedInvestigate LA Completed Orders Decline
This question evaluates a data scientist's skills in product analytics, causal inference, metric decomposition, anomaly investigation, and experimenta...
Analytics & Experimentation
4
0
51 people solved
Jan 15, 2026
Hard
Software Engineer LockedExplain left-skewed returns and Black–Scholes terms
This question evaluates understanding of quantitative finance and statistical concepts—specifically interpretation of left-skewed return distributions...
Software Engineering Fundamentals
1
0
31 people solved
Jan 15, 2026
Hard
Software Engineer LockedDifferentiate smart pointers and raw pointers
This question evaluates a candidate's understanding of C++ pointer semantics, ownership models, lifetime management, and memory-safety trade-offs betw...
Software Engineering Fundamentals
4
0
36 people solved
Jan 15, 2026
Hard
Software Engineer LockedCompare bagging, boosting, random forests, and bias-variance
This question evaluates understanding of ensemble methods (bagging, boosting, random forests) and the bias–variance tradeoff, assessing competency in ...
Machine Learning
4
0
31 people solved
Jan 15, 2026
Hard
Software Engineer LockedFind best-matching binary pattern with wildcards
This question evaluates pattern-matching and string-algorithm skills, including handling wildcards and variable-length matches, priority-based rule se...
Coding & Algorithms
10
0
116 people solved
Jan 15, 2026
Medium
Data ScientistSQL Queries and Analysis on Bad Advertisers
Scenario You are on the analytics team at TikTok and need to analyze the presence of bad content in ads and identify problematic advertisers. Question...
Analytics & Experimentation
13
0
78 people solved
Jun 29, 2025
Easy
Software Engineer LockedCompute Courier Delivery Pay
This question evaluates a candidate's ability to work with time-interval arithmetic, interval union/overlap reasoning, and aggregation of time-based p...
Coding & Algorithms
3
0
40 people solved
Apr 12, 2026
Medium
Software EngineerImplement Document Predicate APIs
Design a simple document service that stores text documents identified by filename. Implement these APIs: - InsertDoc(filename, content): store or ove...
Coding & Algorithms
10
1
81 people solved
Apr 12, 2026
Medium
Software Engineer LockedDetermine Exact Layover Booking
This question evaluates a candidate's competency in algorithmic problem solving, numerical precision handling, and combinatorial selection under exact...
Coding & Algorithms
59
1
413 people solved
Apr 12, 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
66 people solved
Jan 14, 2026