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
Data ScientistEstimate OLS via streaming sufficient statistics
Streaming OLS and Ridge for Out-of-Core, High-Dimensional Linear Regression You need to estimate linear regression coefficients when the dataset is to...
Machine Learning
15
0
164 people solved
Oct 13, 2025
Medium
Data ScientistDiagnose a metric drop in search time
Over the last 3 calendar months, the metric 'searching time per user per session' dropped by 35%. A teammate proposes modeling two distributions: T1 =...
Analytics & Experimentation
6
1
90 people solved
Oct 13, 2025
Easy
Data ScientistCalculate CI and Test Correlation Under Normality
Inference on a Mean, Significance of a Correlation, and a Normal Quantile Assume standard parametric conditions (normality as stated). Show formulas, ...
Statistics & Math
12
0
106 people solved
Oct 13, 2025
Medium
Data Scientist LockedBuild and evaluate an order prediction model
This question evaluates a data scientist's competency in building and evaluating binary classification models with temporal constraints and operationa...
Machine Learning
7
0
77 people solved
Oct 13, 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
Medium
Software Engineer LockedDescribe Cross-Functional Remote Collaboration
This question evaluates a candidate's competency in cross-functional collaboration, stakeholder communication, asynchronous coordination, and problem-...
Behavioral & Leadership
1
0
20 people solved
May 18, 2026
Hard
Software Engineer LockedDesign several backend components
This set of prompts evaluates backend system design, API and data-modeling skills, low-level software architecture, and competencies in consistency, c...
Software Engineering Fundamentals
12
0
196 people solved
Feb 12, 2026
Medium
Software EngineerDiscuss complex project decisions and observability
Answer the following behavioral questions with concrete examples (use a structured format such as STAR): - Describe a recent AI-related project you wo...
Behavioral & Leadership
6
0
47 people solved
Feb 12, 2026
Medium
Software EngineerDescribe disagreement with leadership and your approach
Give an example where you disagreed with a leader (your manager, a VP, CTO, etc.). - What was the disagreement about (technical direction, priorities,...
Behavioral & Leadership
6
0
54 people solved
Feb 12, 2026
Medium
Machine Learning Engineer LockedDebug and optimize a card-drawing strategy
This question evaluates debugging and implementation skills, combinatorial search and optimization, and the ability to design and interpret simulation...
Coding & Algorithms
22
0
158 people solved
Feb 12, 2026
Medium
Software Engineer LockedIdentify read-only files from permission records
This question evaluates proficiency in parsing and filtering structured data by interpreting Unix-like permission strings and extracting filenames bas...
Coding & Algorithms
6
0
73 people solved
Feb 12, 2026
Medium
Software Engineer LockedSolve common string/DP/stack problems
This set of four coding tasks evaluates proficiency in string algorithms, dynamic programming, sliding-window techniques, monotonic stack usage, and t...
Coding & Algorithms
8
0
111 people solved
Feb 12, 2026
Medium
Software EngineerSolve 12 coding interview problems
Below are multiple independent coding problems. --- Problem 1: Reduce an integer to 0 with \(\pm 2^i\) You are given a positive integer \(n\). In one ...
Coding & Algorithms
353
0
3694 people solved
Feb 12, 2026
Medium
Machine Learning Engineer LockedModel an ads ranking system
This question evaluates machine learning modeling, feature engineering, and systems-level ranking competencies for ad selection and monetization, cove...
Machine Learning
10
0
88 people solved
Feb 12, 2026
Medium
Software Engineer LockedImplement bitmap font render/compress/invert
This question evaluates proficiency in bitmap and matrix manipulation, lossless compression/decompression techniques, and modular code reuse for trans...
Coding & Algorithms
8
0
86 people solved
Feb 12, 2026
Medium
Software EngineerHow do you handle conflict and ambiguity?
You are asked a series of detailed behavioral questions. Answer each with specific context, actions, and measurable outcomes. Conflict, teamwork, and ...
Behavioral & Leadership
10
0
107 people solved
Feb 12, 2026
Hard
Software EngineerFind largest connected group of overlapping intervals
You are given n people, where person i works during an inclusive time interval [start_i, end_i]. Define a communication graph: - Each person is a node...
Coding & Algorithms
6
0
80 people solved
Feb 12, 2026
Hard
Software Engineer LockedImplement in-memory data structures and booking API
This question evaluates proficiency in data structures and algorithms, systems-level data modeling, and practical API design by testing in-memory key-...
Coding & Algorithms
8
0
121 people solved
Feb 12, 2026
Medium
Software EngineerParse code into operation triads IR
Problem: Operation-Triads Parsing (Mini Language) You are given a small, line-based programming language consisting of assignment statements and non-n...
Coding & Algorithms
5
0
73 people solved
Feb 12, 2026
Hard
Software EngineerCompute days until a higher reading
You are given an array readings[] representing sensor values over consecutive days (e.g., temperatures). For each day i, compute how many days you mus...
Coding & Algorithms
7
0
60 people solved
Feb 12, 2026