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 EngineerDesign an asynchronous logger with formatting
Design an Asynchronous C++ Logger Using a Lock-Free Queue Context You are asked to design and implement an asynchronous logger suitable for a technica...
System Design
10
0
76 people solved
Sep 6, 2025
Medium
Software EngineerIntroduce yourself and explain 'Why us?'
Behavioral & Leadership Technical Screen Prompt (Software Engineer) Context You are interviewing for a Software Engineer role in a technical screen fo...
Behavioral & Leadership
6
0
60 people solved
Sep 6, 2025
Medium
Software EngineerIdentify research to improve business
Analytics & Experimentation Strategy to Improve Business Outcomes Context Assume you are a software engineer interviewing for a role focused on analyt...
Analytics & Experimentation
4
0
51 people solved
Sep 6, 2025
Medium
Data ScientistDiscuss the future of quantitative finance
Outlook on Quantitative Finance (Next 5–10 Years) Context: You are interviewing for a data-focused role in quantitative finance. Provide a concise, st...
Behavioral & Leadership
6
0
106 people solved
Sep 6, 2025
Medium
Software EngineerImplement Luhn-based card validation and inference
Question Implement a set of utilities for credit-card validation and inference using the Luhn checksum algorithm and standard brand patterns. Brand pa...
Coding & Algorithms
3
1
47 people solved
Sep 6, 2025
Medium
Software EngineerDesign a lazy-initialized connection pool
Question Design and implement a thread-safe, lazily initialized connection pool. You are given an immutable base class Connection (you cannot modify i...
System Design
22
0
241 people solved
Sep 6, 2025
Medium
Data ScientistInternPredict Stock Prices from Google Search Data
You are given access to historical Google search data — relative search volume over time for arbitrary query terms — along with standard historical ma...
Machine Learning
6
0
51 people solved
Dec 1, 2024
Easy
Software Engineer LockedDetermine Straight Flush
This question evaluates competency in algorithmic pattern detection and data-structure manipulation applied to domain-specific representations, focusi...
Coding & Algorithms
3
0
25 people solved
Mar 15, 2026
Easy
Data ScientistDetect and address multicollinearity
Prompt You fit a linear/logistic regression model and suspect multicollinearity among features. 1. What is multicollinearity and why is it a problem? ...
Statistics & Math
8
0
64 people solved
Dec 1, 2025
Easy
Data Scientist LockedExplain Type I vs Type II errors
This question evaluates understanding of hypothesis testing and statistical inference, focusing on definitions and implications of Type I and Type II ...
Statistics & Math
3
0
47 people solved
Dec 1, 2025
Medium
Software Engineer LockedDesign backend to score and classify tweets
This question evaluates backend system design skills including data modeling and ingestion, integration with external LLM-style inference APIs, worker...
System Design
15
0
131 people solved
Dec 1, 2025
Medium
Machine Learning Engineer LockedSolve sampling and streaming tasks
This question evaluates algorithmic problem-solving, data structure design, probabilistic reasoning for weighted random selection, sliding-window stri...
Coding & Algorithms
2
0
31 people solved
Sep 4, 2025
Medium
Software EngineerRank songs by pairwise user preferences
You are given preference rankings for n users over m songs. Each song is labeled from 0 to m - 1. For each user i (0-indexed), you are given an array ...
Coding & Algorithms
26
0
184 people solved
Nov 30, 2025
Medium
Data ScientistInternAnalyze Product Launch and Creator Engagement
You are interviewing for a Data Scientist intern role at a short-video platform. Use a recent data or machine-learning project from your resume as the...
Machine Learning
1
0
25 people solved
Mar 14, 2026
Medium
Data Scientist LockedShould WhatsApp Launch Group Calls?
This question evaluates product analytics and experimentation skills, specifically defining north-star, primary, guardrail and diagnostic metrics from...
Analytics & Experimentation
10
0
81 people solved
Mar 14, 2026
Medium
Product ManagerImprove TikTok ads and moderation
In a TikTok Product Manager interview, answer strategy questions about the content ecosystem. Compare a competitor's ecosystem versus TikTok, propose ...
Product Design & Strategy
4
0
52 people solved
Jan 26, 2025
Medium
Software EngineerMaintain median of a data stream
Design a data structure that supports: - addNum(int x): Add an integer from a stream. - findMedian(): Return the median of all inserted numbers so far...
Coding & Algorithms
8
0
64 people solved
Sep 1, 2025
Medium
Machine Learning Engineer LockedFind longest palindromic substring
This question evaluates knowledge of string algorithms and pattern recognition, focusing on identifying palindromic substrings and reasoning about tim...
Coding & Algorithms
6
0
68 people solved
Nov 28, 2025
Medium
Machine Learning Engineer LockedDesign versioned in-memory key-value store
This question evaluates understanding of in-memory data structures, versioning semantics, rollback mechanisms, and performance trade-offs between time...
System Design
11
0
78 people solved
Nov 28, 2025
Easy
Software EngineerImplement list cloning and k-frequency finder
You are given two separate coding tasks. --- Problem 1: Deep copy a linked list with extra pointers You are given the head of a singly linked list. Ea...
Coding & Algorithms
3
0
74 people solved
Nov 27, 2025