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
Software EngineerHow would you lead a team through delivery issues?
Interview Prompt (Behavioral & Leadership) You are interviewing for a software engineering role. The interviewer runs a mixed behavioral round: one ex...
Behavioral & Leadership
5
0
53 people solved
Nov 17, 2025
Medium
Data Scientist LockedDefine and estimate prevalence of unhealthy users
This question evaluates a data scientist's ability to operationalize an "unhealthy user" metric and compute its prevalence from session duration and d...
Analytics & Experimentation
4
0
41 people solved
Aug 17, 2025
Medium
Software EngineerHow to root-cause Wi‑Fi chip stops after 30 minutes
You are running automated tests on a Wi‑Fi chip. The chip transmits normally at the beginning, but after about 30 minutes it stops transmitting (no si...
Software Engineering Fundamentals
8
0
132 people solved
Mar 6, 2026
Medium
Product ManagerLearning from Failure & Conflict
Google Product Manager Behavioral Screen: Failure, Conflict, and Mission Fit You are in an early behavioral interview for a Product Manager role. Answ...
Behavioral & Leadership
26
0
430 people solved
Jul 4, 2025
Medium
Product ManagerAmazon Behavioral & Leadership Scenarios
Amazon Behavioral and Leadership Scenarios for Product Managers Prepare concise, structured answers for an Amazon Product Manager onsite covering beha...
Behavioral & Leadership
14
0
98 people solved
Jul 4, 2025
Medium
Product ManagerLottery Coupon Winners Calculation
Lottery Coupons: Most Frequent Digit-Sum Values Problem You are running a lottery with consecutively numbered coupons from $1$ to $n$ (inclusive). A c...
Product / Decision Making
16
0
214 people solved
Jul 4, 2025
Medium
Machine Learning Engineer LockedImplement a Lazy Array
This question evaluates understanding of lazy evaluation and deferred computation, implementation of iterator/generator-like abstractions, and the abi...
Coding & Algorithms
1
0
15 people solved
Jan 6, 2026
Medium
Software Engineer AIExtend a Maze Solver
You are given an existing codebase for a maze game and solver. The maze is represented as a 2D grid containing: - S: start cell - T: target cell - .: ...
Coding & Algorithms
4
0
41 people solved
Jan 6, 2026
Hard
Machine Learning Engineer LockedCompute minutes since last train departure
This question evaluates time arithmetic and handling of cyclic day-wrap boundary conditions along with parsing and comparison of timestamp lists, refl...
Coding & Algorithms
7
0
49 people solved
Jan 6, 2026
Medium
Software EngineerIntern LockedDesign a logger that returns top-K messages
This question evaluates skills in designing in-memory data structures and algorithms for frequency counting and interval querying, including extractin...
Coding & Algorithms
8
0
79 people solved
Jan 6, 2026
Medium
Software EngineerIntern LockedMaximize sum without choosing adjacent elements
This question evaluates a candidate's understanding of array-based optimization and dynamic programming concepts for computing a maximum sum under non...
Coding & Algorithms
8
0
73 people solved
Jan 6, 2026
Medium
Software Engineer LockedDesign a ranking and recommendation system
This question evaluates a candidate's competency in designing end-to-end ranking and recommendation systems, covering candidate generation, ranking, f...
System Design
10
0
66 people solved
Jan 6, 2026
Hard
Software Engineer LockedConstruct a circular gift exchange across families
This question evaluates ability to model constrained permutations and apply graph-theoretic and combinatorial reasoning to produce a single circular o...
Coding & Algorithms
3
0
31 people solved
Jan 6, 2026
Hard
Software Engineer LockedDetermine winner in stack-merging game
This question evaluates understanding of combinatorial game theory, impartial game analysis, state-space encoding, and efficient state-space search te...
Coding & Algorithms
10
1
73 people solved
Jan 6, 2026
Medium
Software Engineer LockedReconstruct route from unordered travel tickets
This question evaluates understanding of directed graph concepts and sequence reconstruction, assessing the ability to reason about ordered relationsh...
Coding & Algorithms
12
0
202 people solved
Jan 6, 2026
Hard
Data Scientist LockedDerive correlation bounds and omitted-variable bias
This question evaluates understanding of multivariate correlation structure and linear regression properties, focusing on feasible ranges and construc...
Machine Learning
15
0
116 people solved
Jan 6, 2026
Medium
Software Engineer LockedCompute total time to finish all courses
This question evaluates competency in graph algorithms and scheduling, including dependency resolution, cycle detection, and aggregation of task durat...
Coding & Algorithms
6
0
95 people solved
Jan 6, 2026
Medium
Software Engineer LockedValidate whether brackets are properly nested
This question evaluates proficiency in sequence validation, paired-token matching, and the use of data structures to manage nested elements within str...
Coding & Algorithms
13
0
101 people solved
Jan 6, 2026
Hard
Software EngineerIntern LockedWhat skills are needed for AI infra roles?
This question evaluates familiarity with AI infrastructure and LLM serving, including systems and performance engineering, model inference mechanisms,...
ML System Design
10
0
81 people solved
Jan 6, 2026
Medium
Software Engineer LockedValidate CSV rows under multiple verification rules
This question evaluates skills in CSV parsing, string normalization and multi-rule data validation, covering whitespace handling, length checks, case-...
Coding & Algorithms
4
0
33 people solved
Jan 6, 2026