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
Medium
Software Engineer LockedFind Shortest Queue with Few Calls
This question evaluates algorithm design and analysis skills, focusing on working with restricted data structure APIs and minimizing total operations ...
Coding & Algorithms
6
1
68 people solved
Apr 10, 2026
Medium
Data Scientist LockedImplement Jackknife and Random Choice
This question evaluates understanding of statistical resampling (jackknife), probabilistic sampling algorithms including with- and without-replacement...
Coding & Algorithms
9
0
93 people solved
Jan 11, 2026
Medium
Frontend Engineer LockedImplement an event emitter
This question evaluates understanding of event-driven programming and API design in a frontend environment, specifically the ability to manage event l...
Coding & Algorithms
4
0
86 people solved
Jan 11, 2026
Easy
Software Engineer LockedDesign compressed vector and compute dot product
This question evaluates understanding of data structure design, sequence compression concepts (such as run-length patterns), and numeric algorithm eff...
Coding & Algorithms
4
0
83 people solved
Jan 11, 2026
Medium
Software EngineerSenior+Scale Digit-Square Convergence Requests
Design a service that receives very high request volume for the digit-square convergence operation. For each request, the input is a positive integer ...
System Design
3
0
36 people solved
Oct 28, 2025
Easy
Software EngineerCompute an Exact Factorial
Compute an Exact Factorial Implement factorial(n) and return the exact integer value of n!. 0! is defined as 1. The input is always a valid nonnegativ...
Coding & Algorithms
1
0
22 people solved
Apr 9, 2026
Hard
Software EngineerSimulate and Construct Tournament Rankings
You are given a single-elimination tournament represented by an array of ranks. The array is a permutation of the integers 1..n, where a smaller numbe...
Coding & Algorithms
1
0
14 people solved
Apr 9, 2026
Medium
Software EngineerSenior+Prepare Leadership And Collaboration Stories
Prepare concise behavioral interview answers for the following prompts. Use specific examples from your own experience, quantify impact where possible...
Behavioral & Leadership
2
0
33 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
Software EngineerFind the Critical Path
You are given a project represented as a directed acyclic graph of tasks. Each task has: - a unique task name - a list of prerequisite task names - a ...
Coding & Algorithms
0
0
11 people solved
Apr 9, 2026
Medium
Data Scientist LockedImplement Stratified Sampling by Country
This question evaluates understanding of stratified sampling, proportional allocation across groups, reproducible random sampling, data grouping and e...
Coding & Algorithms
3
0
50 people solved
Apr 9, 2026
Hard
Data Scientist LockedHow to evaluate Shop ad upranking
This question evaluates a data scientist's competency in causal experimentation, metric design, uplift and channel-substitution analysis, heterogeneou...
Analytics & Experimentation
1
0
26 people solved
Oct 26, 2025
Medium
Software Engineer LockedDesign a Distributed Key-Value Store
This question evaluates expertise in distributed systems and large-scale storage design, covering API design, partitioning, replication, request routi...
System Design
12
0
226 people solved
Jan 9, 2026
Medium
Software Engineer LockedCheck palindrome number and next palindrome
This question evaluates understanding of numeric and string manipulation along with algorithmic problem-solving for palindrome detection and generatio...
Coding & Algorithms
7
0
66 people solved
Jan 9, 2026
Medium
Software Engineer LockedReturn nodes on a tree diameter path
This question evaluates understanding of graph algorithms and tree properties, specifically the ability to identify and reconstruct a longest simple p...
Coding & Algorithms
8
0
76 people solved
Jan 9, 2026
Medium
Software Engineer LockedDesign a token manager with lazy expiration
This question evaluates time-based data structure design and algorithmic reasoning for managing expiring items, focusing on hashing, timestamp orderin...
Coding & Algorithms
11
0
93 people solved
Jan 9, 2026
Medium
Data ScientistDerive the Long-Run Sex Ratio Under a Stopping Rule
Assume each child is independently equally likely to be a girl or a boy. Every family continues having children until its first boy, then stops. For a...
Statistics & Math
0
0
8 people solved
Jan 5, 2025
Hard
Software EngineerASIC Verification Fundamentals Across SystemVerilog UVM CDC and Architecture
Work through this ASIC design-verification interview set. Use small SystemVerilog examples where they make an answer clearer, and distinguish simulati...
Software Engineering Fundamentals
0
0
16 people solved
Jan 5, 2025
Hard
Data ScientistNew GradSolve Exact Probability and Expected-Value Exercises
Solve Exact Probability and Expected-Value Exercises Work through the following short quantitative problems. Give exact simplified fractions when the ...
Software Engineering Fundamentals
2
0
20 people solved
May 16, 2024
Easy
Data ScientistMatch payments to invoices by memo or amount
Scenario You are building a small reconciliation tool that matches payments to invoices. Data structures Assume you are given: - invoices: a list of i...
Coding & Algorithms
8
0
60 people solved
Oct 25, 2025