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 ScientistShould you play a dice payout game?
Two players each roll a fair six-sided die once. - If you win (your roll > opponent’s roll), the opponent pays you $n. - If the opponent wins or it’s ...
Statistics & Math
9
0
69 people solved
Nov 3, 2025
Medium
Data ScientistHow to decide if users need a new feature
You are a Data Scientist at a social app. The product team proposes a new in-app feature (e.g., a new sharing surface). You have event-level data and ...
Analytics & Experimentation
3
0
35 people solved
Nov 2, 2025
Medium
Software Engineer LockedProcess multi-currency payments with fees
This question evaluates a software engineer's competency in precise integer arithmetic and rounding semantics, multi-currency FX conversion with basis...
Coding & Algorithms
3
0
36 people solved
Nov 2, 2025
Medium
Software EngineerFind K-th Largest and Longest Vacation
Solve the following two coding problems. 1. Find the k-th largest element Given an integer array nums and an integer k, return the element that wou...
Coding & Algorithms
3
0
30 people solved
Nov 1, 2025
Medium
Machine Learning EngineerBuild Naive Bayes spam classifier with F1
You are given a text classification dataset for spam detection (binary labels: spam vs not_spam) in a Jupyter notebook environment. Task 1. Preprocess...
Machine Learning
6
0
73 people solved
Nov 1, 2025
Medium
Machine Learning EngineerDetermine if chasing points will meet
You are given N points in 2D, indexed 0..N-1, forming a cycle. - At time t = 0, point i is at coordinates (xi, yi). - All points move simultaneously a...
Coding & Algorithms
8
0
84 people solved
Nov 1, 2025
Easy
Data Scientist LockedCompute Bayes probability for fake accounts
This question evaluates Bayesian reasoning and probabilistic modeling skills, including conditional probability, base-rate effects, detector character...
Statistics & Math
14
1
105 people solved
Nov 1, 2025
Medium
Data ScientistCompute probability last passenger gets own seat
There are 100 passengers boarding a plane with 100 seats, numbered 1 to 100. Passenger i (for 1 ≤ i ≤ 100) has a ticket for seat i. The boarding proce...
Coding & Algorithms
2
0
40 people solved
Nov 1, 2025
Medium
Data ScientistFind smallest N for 5-and-21 sums
You are given two positive integers: 5 and 21. We say a positive integer x is representable if it can be written in the form \[ x = 5a + 21b \] for so...
Coding & Algorithms
2
0
27 people solved
Nov 1, 2025
Medium
Data ScientistInternWhy Is the Sample Mean Approximately Normal for Large Samples?
In statistics we routinely treat the average of a large sample as if it were normally distributed — for example, when building confidence intervals fo...
Machine Learning
3
0
25 people solved
Dec 1, 2024
Medium
Product AnalystWhy Capital One and why you?
In an HR screening interview for a Capital One Senior Business Analyst role, prepare concise answers to common fit and motivation questions. Constrain...
Behavioral & Leadership
4
0
45 people solved
Jul 17, 2024
Medium
Software EngineerIntern LockedImplement nested object path lookup
This question evaluates parsing and traversal of nested maps and arrays, robust error handling for missing keys and out-of-bounds indices, and reasoni...
Coding & Algorithms
3
0
38 people solved
Oct 31, 2025
Medium
Technical Program ManagerSenior+Compare Uber Eats and DoorDash
Compare Uber Eats and DoorDash from a product and market strategy perspective. Which platform is better positioned, for which user segments, and why? ...
Product Design & Strategy
5
0
41 people solved
May 1, 2025
Medium
Software EngineerHow to answer frontend video-screen behavioral prompts
You are in a ~15-minute asynchronous AI video screen for a Frontend Engineer role. You will record short responses that will be reviewed by the hiring...
Behavioral & Leadership
6
0
70 people solved
Oct 30, 2025
Medium
Software EngineerAnswer multi-round grid and data-structure questions
You are given several independent interview-style coding questions. 1) Find first/last occurrence in sorted array (+ dynamic updates follow-ups) Given...
Coding & Algorithms
18
0
135 people solved
Oct 30, 2025
Hard
Software EngineerDelete a Node From a Search Tree
Given the root of a binary search tree and an integer key, delete the node whose value equals key if it exists. Return the possibly new root while pre...
Coding & Algorithms
7
0
48 people solved
Apr 29, 2025
Hard
Data ScientistCompute Variance from a Python List
Given a Python list of numeric values, write a function to compute the variance without using external libraries such as NumPy or pandas. Clarify any ...
Coding & Algorithms
9
0
83 people solved
Oct 29, 2025
Medium
Product ManagerDesign a New Credit Card
You are interviewing for a Product Manager product case. Work through this prompt in a structured way: You are a Product Manager for Capital One's cre...
Product Design & Strategy
9
0
70 people solved
Jul 20, 2023
Medium
Software EngineerSenior+Solve Digit-Square and Grid BFS Problems
Solve the following coding problems. Problem 1: Digit-square convergence Given a positive integer n, repeatedly replace n with the sum of the squares ...
Coding & Algorithms
0
0
10 people solved
Oct 28, 2025
Medium
Software EngineerSimulate pouring water onto a 1D terrain
You are given a 1D terrain represented by an integer array heights, where heights[i] is the height of the column at index i. Part 1 — Render terrain W...
Coding & Algorithms
37
0
268 people solved
Oct 28, 2025