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 AI LockedImplement a Coin-Constrained Jump Strategy
This question evaluates a candidate's ability to design a stateful decision-making strategy combining physics-based motion reasoning, resource-constra...
Coding & Algorithms
2
0
45 people solved
Apr 29, 2026
Hard
Software EngineerImplement an In-Memory Database
Design and implement an in-memory database that stores records by key. Each record is a map from field to integer value. Implement the following funct...
Coding & Algorithms
5
0
49 people solved
Apr 29, 2026
Hard
Software Engineer LockedImplement a Contiguous Memory Manager
This question evaluates competence in designing efficient data structures and algorithms for interval management, contiguous allocation and deallocati...
Coding & Algorithms
10
0
156 people solved
Jan 19, 2026
Medium
Software EngineerImplement Stock Price Query APIs
You are given an initial collection of stock price records. Each record contains: - symbol: a stock name or ticker string - timestamp: initially a cal...
Coding & Algorithms
0
0
14 people solved
Apr 1, 2026
Easy
Software EngineerImplement a CSAT Sliding Window Tracker
Design and implement a class that tracks customer satisfaction scores over a sliding time window. A customer support conversation has: - conversation_...
Coding & Algorithms
3
0
42 people solved
Apr 1, 2026
Easy
Data ScientistSenior+ LockedWrite an average-income function
This question evaluates proficiency in data manipulation and basic statistical aggregation, particularly handling missing values and computing average...
Coding & Algorithms
13
0
106 people solved
Apr 1, 2026
Medium
Data ScientistInternDescribe past project experience clearly
You are interviewing for a Data Scientist Intern role in an asynchronous video interview format. Prepare concise, structured responses to the followin...
Behavioral & Leadership
5
0
52 people solved
Apr 1, 2026
Medium
Machine Learning EngineerNavigate Conflict, Compromise, and a Revealed Weakness
Navigate Conflict, Compromise, and a Revealed Weakness Prepare a coherent behavioral answer set about how you work with other engineers and with your ...
Behavioral & Leadership
0
0
10 people solved
Jul 6, 2026
Medium
Machine Learning EngineerProcess Operations for an In-Memory Key-Value Store
Process Operations for an In-Memory Key-Value Store Implement an in-memory key-value store that supports adding or replacing a value, deleting a key, ...
Coding & Algorithms
1
0
18 people solved
Jul 6, 2026
Medium
Software EngineerSolve Subset Sum And Return All Matching Subsets
Given an array of non-negative integers and a target, first determine whether any subset sums to the target using dynamic programming with O(target) s...
Coding & Algorithms
3
0
8 people solved
Jul 6, 2026
Medium
Data ScientistInvestigate LA Order Drop
A food delivery marketplace sees a meaningful decline in completed orders in the Los Angeles market. Explain how you would investigate the drop end to...
Analytics & Experimentation
14
0
114 people solved
Jan 18, 2026
Medium
Software EngineerImplement custom iterators and interfaces
Implement custom iterators and interfaces Define a minimal Iterator interface (e.g., hasNext(), next()) for integers without using IDE-generated scaff...
Coding & Algorithms
16
0
143 people solved
Jul 31, 2025
Medium
Software Engineer AIImplement an In-Memory File System
Implement an In-Memory File System The source reports an in-memory file-system exercise but not its exact error serialization or current-directory rem...
Coding & Algorithms
1
0
17 people solved
Apr 28, 2026
Medium
Software EngineerFind the Longest Consecutive Path in a Binary Tree
Given a binary tree, return the length of the longest downward path where each child value is exactly one greater than its parent value. Nodes have va...
Coding & Algorithms
0
0
8 people solved
Apr 28, 2026
Medium
Machine Learning EngineerSenior+Design a Family-Friendly Listing Classifier
Design a machine learning system for a short-term rental marketplace that classifies whether a property listing is suitable for families. Users should...
ML System Design
3
0
48 people solved
Apr 28, 2026
Hard
Software EngineerNew GradCargo Order Allocation Across Departing Planes
A freight company assigns incoming shipping orders to a fixed fleet of cargo planes. You must implement the order-processing logic: decide whether eac...
Coding & Algorithms
1
0
19 people solved
Nov 16, 2025
Medium
Software EngineerInternAnswer OoO, caches, and memory-system questions
You are interviewing for a CPU/DV role. Provide clear explanations (and small worked examples where useful) for the following computer architecture to...
Software Engineering Fundamentals
12
0
146 people solved
Feb 9, 2026
Hard
Machine Learning Engineer LockedDesign systems for global request detection and labeling
This question evaluates the ability to design scalable, low-latency ML systems for global streaming event detection and rapid labeling under extreme c...
ML System Design
7
0
60 people solved
Feb 9, 2026
Hard
Data ScientistSenior+ LockedExplain Linear Regression Assumptions
This question evaluates understanding of ordinary least squares linear regression assumptions and their implications for unbiased coefficient estimate...
Statistics & Math
3
0
57 people solved
Mar 5, 2026
Medium
Data EngineerDesign a schema for server engagement
You are building analytics for a chat platform similar to Discord. The raw event sources are: - server(server_id, creator_id, created_at) - server_vie...
System Design
14
0
119 people solved
Jan 17, 2026