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
Machine Learning EngineerImplement string-based rounding without floats
Coding You are not allowed to parse the input into a built-in floating type (to avoid overflow and precision issues). Work directly on strings. 1) Imp...
Coding & Algorithms
13
0
115 people solved
Dec 15, 2025
Hard
Machine Learning EngineerDesign an image/video near-duplicate detection system
Question Design a system to detect near-duplicate images/videos (e.g., reuploads, minor edits, different encodes) at large scale. Requirements - Suppo...
ML System Design
11
0
160 people solved
Dec 15, 2025
Medium
Software Engineer LockedDesign a social network with snapshots
This question evaluates understanding of data structures, graph representations, immutability and snapshot/versioning strategies for in-memory systems...
Software Engineering Fundamentals
37
0
318 people solved
Nov 16, 2025
Easy
Data ScientistInternEvaluate Alternative Data for an Investment Pitch
You are given an alternative dataset and asked to develop an investment pitch. Describe how you would determine whether the data contains a real, usab...
Analytics & Experimentation
1
0
32 people solved
Aug 4, 2025
Medium
Software EngineerExecute TTL Cache Operations with Fetch-on-Miss
Execute TTL Cache Operations with Fetch-on-Miss Implement a pure simulator for a TTL cache. The simulator includes put, get, delete, size, and a deter...
Coding & Algorithms
1
0
10 people solved
Feb 16, 2026
Easy
Data ScientistHow to evaluate a new homepage feature
Question PayPal is planning to launch a new homepage feature (for example, a new CTA module, personalized content, or a redesigned layout) and wants t...
Analytics & Experimentation
8
0
74 people solved
Feb 15, 2026
Easy
Data Scientist LockedEvaluate AI-assisted ads creation feature
This question evaluates a data scientist's competence in experimental design, metric selection, causal inference, and balancing business metrics with ...
Analytics & Experimentation
9
0
89 people solved
Feb 15, 2026
Medium
Software EngineerNew GradAnswer common recruiter behavioral questions
In an initial recruiter phone screen, you are asked several standard questions. Prepare structured, interview-ready responses for: 1) Why are you look...
Behavioral & Leadership
17
0
127 people solved
Jan 14, 2026
Medium
Data Scientist LockedSolve a constrained problem using KKT conditions
This question evaluates understanding of constrained optimization using Karush–Kuhn–Tucker (KKT) conditions, including Lagrangian formulation, station...
Machine Learning
3
0
51 people solved
Jan 14, 2026
Medium
Data ScientistCount Article Types Viewed
Count Article Types Viewed You are given article view events and article metadata. Table 1: article_views — one row per article view event. | Column |...
Data Manipulation (SQL/Python)
10
0
86 people solved
Aug 3, 2025
Medium
Data ScientistMaximum Profit with Unlimited Stock Transactions
Maximum Profit with Unlimited Stock Transactions Given daily stock prices, compute the maximum profit from any number of buy-and-sell transactions. Yo...
Coding & Algorithms
0
0
6 people solved
Dec 14, 2025
Medium
Software EngineerDesign a Reliable Payment Processing System
Design a Reliable Payment Processing System Design a payment-processing service for merchants. A client creates a payment, the service submits it to a...
System Design
1
0
17 people solved
May 2, 2026
Easy
Software Engineer LockedFind Unique Target-Sum Pairs
This question evaluates array-processing skills, correctness in handling duplicate values, and the ability to identify unique value pairs whose sums m...
Coding & Algorithms
3
0
26 people solved
May 2, 2026
Medium
Software EngineerImplement array rotations and CSV keyword search
Problem A — Rotate an array left/right by k You are given an integer array nums of length n and an integer k. 1. Implement rotateLeft(nums, k) that re...
Coding & Algorithms
5
0
67 people solved
Nov 15, 2025
Easy
Software EngineerInternDesign a web search engine pipeline
Design the high-level pipeline of a web search engine. Assume you need to support internet-scale search (billions of web pages) with low-latency queri...
System Design
3
0
35 people solved
Nov 14, 2025
Hard
Data Engineer LockedImplement phrase search and JSON path
This question evaluates the ability to build an inverted index for in-memory exact phrase search and to implement JSON path traversal with wildcard ma...
Coding & Algorithms
5
0
52 people solved
Dec 13, 2025
Medium
Software EngineerTrace code and find frequent character
Trace code and find frequent character 1) Trace a simple algorithm: Given a short loop-and-conditional pseudo-code operating over an integer array, tr...
Coding & Algorithms
4
0
61 people solved
Aug 1, 2025
Medium
Data ScientistNew GradDescribe ownership and failure
Answer the following behavioral questions in a structured way, using specific examples from your past work or research: 1. Tell me about a time you we...
Behavioral & Leadership
12
0
102 people solved
Mar 22, 2026
Hard
Software EngineerDeep-dive a project architecture
Question Pick one of your recent, non-trivial projects and conduct a deep, end-to-end technical review. This is an open-ended architecture deep-dive: ...
System Design
25
0
349 people solved
Jul 31, 2025
Easy
Software EngineerExplain GPU pipeline and execution hazards
Explain the following GPU architecture topics: 1. How a modern GPU renders a triangle from input vertices to final pixels. 2. How register read-after-...
Software Engineering Fundamentals
6
0
58 people solved
Feb 14, 2026