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 ScientistModel flight delays with EDA and explanation
Predicting 15+ Minute Arrival Delays at Scheduled-Departure Time You are building a binary classifier that predicts whether a domestic flight will arr...
Machine Learning
14
0
145 people solved
Oct 13, 2025
Hard
Data ScientistProve SQL proficiency with concrete outcomes
SQL Proficiency Self‑Assessment and Evidence (Technical Screen) Provide a concise self‑rating and concrete, real‑world examples that demonstrate your ...
Behavioral & Leadership
10
0
77 people solved
Oct 13, 2025
Medium
Software Engineer LockedDesign a GPU-Efficient Video Service
This question evaluates competency in designing GPU-constrained, production-grade ML serving platforms, emphasizing resource management, job schedulin...
ML System Design
11
0
103 people solved
Feb 23, 2026
Medium
Machine Learning Engineer LockedExplain a project deeply
This question evaluates a candidate's ability to communicate technical ownership, system architecture, decision-making, and operational problem-solvin...
Software Engineering Fundamentals
4
0
56 people solved
Feb 23, 2026
Hard
Software EngineerDesign a crypto trading web frontend
Design the front-end architecture for a retail cryptocurrency trading web app (like a spot exchange). Assume the product needs these core screens and ...
System Design
14
0
201 people solved
Feb 23, 2026
Easy
Data Scientist LockedHow to evaluate a new Carousel feature
This question evaluates a data scientist's competence in experimentation design, measurement framework formulation, metric definition, and diagnostic ...
Analytics & Experimentation
9
0
125 people solved
Feb 1, 2026
Medium
Software EngineerDiscuss logistics and compensation
Discuss logistics and compensation Behavioral Screen: Logistics and Preferences Context: You are interviewing for a Software Engineer role. The interv...
Behavioral & Leadership
17
2
199 people solved
Jul 26, 2025
Easy
Data ScientistDesign tests to measure latency impact
Question You are a Data Scientist supporting a large consumer product (e.g., YouTube). Engineering ships a change intended to reduce client-side / vid...
Analytics & Experimentation
9
0
126 people solved
Oct 13, 2025
Medium
Software EngineerDesign an API for Pascal Triangle
Design an HTTP API that returns Pascal's triangle for a requested height. The server should return only numeric data, while the client is responsible ...
Software Engineering Fundamentals
4
0
55 people solved
Apr 10, 2026
Medium
Software EngineerDesign a pickup-area driver queue
Design an internal service for a ride-hailing company that maintains a driver queue for each pickup area, such as an airport pickup zone or staging lo...
System Design
27
0
245 people solved
Feb 22, 2026
Medium
Data ScientistImplement stream random sampling in Python
You are given an unbounded stream of items that cannot be stored entirely in memory. Write Python code to maintain a uniform random sample from the st...
Coding & Algorithms
11
0
91 people solved
Oct 12, 2025
Easy
Data Scientist LockedHow would you evaluate emoji reactions launch?
This question evaluates a data scientist's competency in analytics and experimentation, covering metric framework design, A/B testing and quasi-experi...
Analytics & Experimentation
41
0
488 people solved
Feb 21, 2026
Medium
Software EngineerDesign a max-stack with efficient operations
Design a max-stack with efficient operations Design a stack that supports push (x), pop(), top(), peekMax(), and popMax(). The popMax operation must r...
Coding & Algorithms
10
0
86 people solved
Aug 8, 2025
Medium
Software Engineer LockedExplain RL policy types and modern policy gradients
This question evaluates understanding of reinforcement learning policy types and modern policy-gradient techniques (TRPO, PPO, GAE) alongside attentio...
Machine Learning
7
0
59 people solved
Jan 11, 2026
Medium
Software EngineerDetermine Whether All Courses Can Be Completed
Implement can_finish(num_courses, prerequisites). Courses are numbered from 0 through num_courses - 1. Each pair [course, prerequisite] means the prer...
Coding & Algorithms
0
0
2 people solved
Jun 4, 2026
Medium
Software EngineerResolve Collisions Between Moving Asteroids
Implement remaining_asteroids(asteroids). Each nonzero integer represents an asteroid moving along one line. Its absolute value is its size; positive ...
Coding & Algorithms
0
0
2 people solved
Jun 4, 2026
Medium
Software EngineerReturn the Top K Most Frequent Elements
Implement top_k_frequent(values, k). Return the k distinct integers that occur most often. Order the result by decreasing frequency; when two values h...
Coding & Algorithms
0
0
2 people solved
Jun 4, 2026
Easy
Software EngineerRepair Unsafe C++ Ownership with Smart Pointers
Repair Unsafe C++ Ownership with Smart Pointers Review this ownership sketch: `cpp class Engine { public: void start(); }; class Controller { ...
Software Engineering Fundamentals
1
0
19 people solved
Apr 9, 2026
Medium
Software EngineerDesign comments and async image generation
The system design portion combined two prompts: 1. Design a full-stack comment system with frontend, backend, and database support for create, read, u...
System Design
1
0
23 people solved
Apr 9, 2026
Hard
Data ScientistDescribe your most and least engaging work
You are interviewing for a Data Scientist role. The hiring manager asks: What kinds of work have been the most engaging for you, and what kinds have b...
Behavioral & Leadership
17
0
169 people solved
Apr 9, 2026