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
Machine Learning EngineerSenior+Prepare For An Applied Science Manager Project And Leadership Screen
Prepare for a phone screen for an applied science manager role. The interview includes a project deep dive on search ranking and a leadership section ...
Behavioral & Leadership
2
0
25 people solved
Feb 15, 2026
Hard
Product ManagerWhy Would Users Care and Why Build It?
You are interviewing for a Google Product Manager role. Assume the product is a new Google AI productivity assistant integrated into Search, Gmail, Do...
Product Design & Strategy
32
0
238 people solved
Jun 20, 2025
Hard
Product AnalystEvaluate WhatsApp Group Video Calling
Meta is considering improvements to WhatsApp group video calling. The product team wants to understand whether users need this feature, how to increas...
Analytics & Experimentation
3
0
27 people solved
Mar 15, 2026
Medium
Data ScientistPredict Future Car Sale Prices
You are given transaction-level data from car dealers for calendar year 2018, and you need to predict vehicle sale prices for transactions that will h...
Machine Learning
9
0
97 people solved
Jan 19, 2026
Medium
Software EngineerDiscuss views on AI safety and its impacts
You are interviewing for an AI-focused company. The interviewer spends most of the behavioral interview asking about your views on AI safety and its b...
Behavioral & Leadership
27
0
291 people solved
Dec 1, 2025
Medium
Software EngineerWhat was the hardest part of your project?
Behavioral question In a project deep dive, the interviewer asks: 1) “In this project, what was the hardest part (most challenging aspect) and why?” 2...
Behavioral & Leadership
18
0
143 people solved
Oct 17, 2025
Medium
Data Engineer LockedConnect Points With Minimum Total Distance
This question evaluates a candidate's competency in graph modeling, geometric distance metrics, and algorithmic complexity analysis for optimizing tot...
Coding & Algorithms
2
0
21 people solved
May 19, 2026
Medium
Software EngineerIntern LockedCount Connected Components in an Undirected Graph
This question evaluates understanding of graph connectivity and cycle detection, measuring competency in reasoning about connected components and the ...
Coding & Algorithms
1
0
17 people solved
May 19, 2026
Medium
Software Engineer LockedDesign a container image registry
This question evaluates a candidate's competency in designing large-scale distributed systems for artifact storage and delivery, including storage arc...
System Design
6
0
50 people solved
Feb 14, 2026
Hard
Software EngineerImplement a Merkle-tree repo diff
You are given two snapshots of a source-code repository on disk, each represented by a root directory path. Implement a Merkle tree over the directory...
Coding & Algorithms
16
0
161 people solved
Feb 14, 2026
Hard
Software EngineerDesign scalable LRU cache and backtracking API
Design scalable LRU cache and backtracking API System Design: Two Production-Ready Services A) Thread-Safe LRU Caching Service Design and describe a p...
System Design
15
0
229 people solved
Jul 26, 2025
Easy
Data Scientist LockedHow to forecast bike dock demand
This question evaluates competency in time-series forecasting and demand prediction, including feature engineering, model selection and evaluation, ha...
Machine Learning
8
0
63 people solved
Feb 13, 2026
Easy
Software EngineerDetermine Whether Two Strings Are Isomorphic
Determine Whether Two Strings Are Isomorphic Problem Implement areIsomorphic(source, target) -> result. Two strings are isomorphic when every characte...
Coding & Algorithms
1
1
15 people solved
Apr 14, 2026
Medium
Software Engineer AICompare Complete or Partial Hands
Implement a hand comparison engine for a simplified poker-like card game. Each player has a hand represented by an array of card strings. A card is en...
Coding & Algorithms
8
0
82 people solved
Mar 14, 2026
Hard
Software EngineerImplement Kac ring with O(1) color and kstep
You are implementing a Kac ring dynamical system. Model - There are N positions arranged in a circle, indexed clockwise: 0, 1, ..., N-1. - Each positi...
Coding & Algorithms
46
0
405 people solved
Sep 24, 2025
Easy
Software EngineerShortest Bridge to Connect Two Islands
You are given an n x n grid where each cell is either water (0) or land (1). Land cells that are adjacent horizontally or vertically belong to the sam...
Coding & Algorithms
1
0
11 people solved
Jun 29, 2026
Medium
Machine Learning EngineerTransform flat keys into nested dictionary
You are given a flat collection of parameter keys like ['layer1.attention.q_proj.weight', 'layer1.attention.k_proj.weight', 'layer1.mlp.fc1.weight', ....
Data Manipulation (SQL/Python)
7
0
128 people solved
Aug 13, 2025
Hard
Product ManagerGoogle–Roomba Acquisition Strategy
Acquisition Strategy Case: Should Google Acquire iRobot and Roomba? Assume you are evaluating a hypothetical acquisition of iRobot, the maker of Roomb...
Product / Decision Making
9
0
55 people solved
Jul 4, 2025
Easy
Data Scientist LockedEvaluate new shop-ads ranking algorithm
This question evaluates a data scientist's skills in online experimentation, causal inference, and marketplace analytics—covering A/B test design, ran...
Analytics & Experimentation
31
0
200 people solved
Jan 17, 2026
Easy
Data ScientistIntern LockedEstimate ATE, ITT, and TOT from experiment
This question evaluates a data scientist's competency in causal inference and experimental analysis, specifically the estimation and interpretation of...
Analytics & Experimentation
9
0
127 people solved
Jan 17, 2026