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
Data ScientistDiagnose KPI anomaly and evaluate promotion/A-B test
Diagnose KPI anomaly and evaluate promotion/A-B test You are a Data Scientist supporting a TurboTax product team. You are asked to handle three relate...
Analytics & Experimentation
13
0
138 people solved
Aug 1, 2025
Medium
Software EngineerBuild and optimize a video playlist component
Build and optimize a video playlist component Design and implement a video playlist component in React (functional components) that meets the followin...
System Design
19
0
154 people solved
Aug 1, 2025
Hard
Software Engineer LockedBuild Quadtree and Find Grid Words
This question evaluates divide-and-conquer tree construction and recursive spatial data structures for the quadtree task, and grid-based search and ba...
Coding & Algorithms
7
0
89 people solved
Jan 26, 2026
Medium
Software EngineerDesign a ride-sharing system (Uber)
Design a large-scale ride-sharing platform similar to Uber. Cover: - Rider and driver apps (account, availability, requesting rides). - Real-time driv...
System Design
11
0
85 people solved
Jan 26, 2026
Easy
Machine Learning Engineer LockedWalk Through an ML Project
This question evaluates end-to-end machine learning engineering competencies, including problem framing and impact, individual ownership, data and mod...
Behavioral & Leadership
6
0
75 people solved
Jan 25, 2026
Hard
Software EngineerImplement Prefix Match Filter
Design a data structure that stores a collection of prefix strings. Then, given a list of input strings, return every string that begins with at least...
Coding & Algorithms
12
0
96 people solved
Feb 25, 2026
Medium
Data ScientistChoose Classification Metrics Under Asymmetric Costs
You are evaluating a binary classification model for a business problem. Explain how to use a confusion matrix to compute and interpret: - precision, ...
Statistics & Math
11
0
127 people solved
Feb 25, 2026
Medium
Software EngineerDesign account system with cashback
Design account system with cashback System Design: Account Management with Transfers, Payments, and Cashback You are to design and implement an in-mem...
System Design
96
0
379 people solved
Jul 29, 2025
Hard
Data ScientistInternPredict a Company's Stock Price from Six Years of Web Search Logs
You are given a DataFrame containing the past six years of web search logs. Each row is a single search event with the following columns: | Column | T...
Machine Learning
2
0
37 people solved
Nov 2, 2025
Medium
Software EngineerFind flush and straight groups in cards
You are given an array of strings cards, where each string represents a distinct playing card. Each card string has the format <rank><suit>: - rank is...
Coding & Algorithms
43
0
307 people solved
Nov 28, 2025
Medium
Data ScientistSenior+ LockedDiagnose Bias and Variance Across KNN and Regularized Models
Sharpen your ability to diagnose bias and variance from learning curves, explain how KNN changes with neighborhood size, and compare L1, L2, and elast...
Machine Learning
2
0
22 people solved
Jun 22, 2026
Medium
Machine Learning Engineer LockedImplement substring search and weighted sampling
This question evaluates algorithm design and analysis skills across string processing (efficient substring search) and randomized/data-structure techn...
Coding & Algorithms
13
0
116 people solved
Mar 30, 2026
Medium
Product ManagerIn-App Purchase A/B Test Design & Evaluation
Product Experiment Prompt: In-App Purchase A/B Test Design and Evaluation You are testing two purchase pages in a mobile game. Page A presents a highe...
Product / Decision Making
18
0
85 people solved
Jul 4, 2025
Medium
Product ManagerAmazon Leadership Principles Behavioral Scenarios
Behavioral STAR Stories: Amazon Leadership Principles Scenarios Prepare concise STAR stories for the following Amazon Product Manager behavioral scena...
Behavioral & Leadership
14
1
132 people solved
Jul 4, 2025
Medium
Machine Learning EngineerExplain Model Compression Techniques
Explain quantization-aware training, knowledge distillation, evaluation mode in deep learning frameworks, and contrastive learning. For each topic, de...
Machine Learning
6
0
103 people solved
Nov 27, 2025
Medium
Software EngineerNew GradHow would you handle an unresponsive teammate?
Scenario You are working on a project with a hard deadline. A teammate who owns a critical task has become unresponsive (misses standups, does not rep...
Behavioral & Leadership
9
0
83 people solved
Nov 27, 2025
Medium
Software EngineerDescribe your most challenging project and leadership
Describe the most challenging project you have worked on. Your interviewer will drill into details such as: - What the project goal and constraints we...
Behavioral & Leadership
9
0
71 people solved
Jan 23, 2026
Hard
Software EngineerDesign a prompt processing backend
Design a prompt processing backend System Design: Background Processing Backend for LLM Prompts Context Design a multi-tenant backend that processes l...
ML System Design
14
0
183 people solved
Jul 26, 2025
Medium
Machine Learning EngineerDescribe motivation, ownership, and conflict
Expect behavioral and culture-fit questions such as: - Why do you want this role or company? - Tell me about a time you showed ownership without being...
Behavioral & Leadership
5
0
67 people solved
Feb 23, 2026
Medium
Machine Learning Engineer LockedDesign chat and online chess
This question evaluates a candidate's ability to design large-scale, real-time consumer systems, testing competencies in scalable architecture, data m...
System Design
8
0
76 people solved
Feb 23, 2026