Interview Questions
Practice the exact questions companies are asking right now.
Questions
9.8k
Companies
511
Updated
08.16.2026
9.8k Questions 511 Companies08.16.2026
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 EngineerMinimal Unique Word Abbreviations
Minimal Unique Word Abbreviations You are given an array words of n distinct strings. Produce a minimal abbreviation for every word according to the r...
Coding & Algorithms
1
0
10 people solved
Jun 30, 2026
Medium
Software EngineerSolve two array and string problems
You will solve two independent coding tasks. Problem 1: Generate All Subsets of a Set You are given an integer array nums containing n distinct elemen...
Coding & Algorithms
15
0
179 people solved
Oct 16, 2025
Medium
Frontend EngineerBuild a React naval board
Build a simplified, single-player Battleship-style game board in React. There is no opponent, no turn-taking, and no networking — you are implementing...
Software Engineering Fundamentals
25
0
279 people solved
Apr 1, 2026
Hard
Software EngineerInternReturn all valid word-break sentences
Given a string s and a dictionary of strings wordDict, insert spaces into s to form a sentence such that every token is in wordDict. Return all possib...
Coding & Algorithms
12
0
215 people solved
Jan 15, 2026
Hard
Software EngineerDesign mobile check deposit system
System Design: Mobile Check Deposit for a Consumer Banking App Design a production-grade Remote Deposit Capture (RDC) feature that lets retail custome...
System Design
94
0
834 people solved
Jul 27, 2025
Medium
Frontend EngineerSenior+Design the Frontend for an AI Chat Application
Design the Frontend for an AI Chat Application Design the frontend architecture for a conversational AI application. Cover streaming responses, conver...
System Design
2
0
43 people solved
May 11, 2026
Medium
Frontend EngineerSenior+Build an Interactive Filtered Tree View
Build an Interactive Filtered Tree View Build a frontend component that accepts an n-ary tree and a text filter. If a node's value contains the filter...
Software Engineering Fundamentals
3
0
34 people solved
May 11, 2026
Easy
Machine Learning EngineerSenior+Applied Machine Learning Assessment: Metrics, Evaluation, and NLP Fundamentals
Reason through an applied machine-learning assessment covering annotation agreement, model metrics, reproducibility, NLP basics, ranking metrics, and ...
Machine Learning
2
0
24 people solved
Apr 20, 2026
Medium
Machine Learning Engineer LockedFirst Word Matching Each Prefix Query
This question evaluates a candidate's grasp of string data structures and efficient prefix-matching techniques, core competencies in coding and algori...
Coding & Algorithms
2
0
14 people solved
Jun 3, 2026
Medium
Data ScientistHow would you design delay and watchlist models?
You may be asked one or both of the following machine-learning case questions: 1. Flight-delay prediction case An airline wants a model that predicts ...
Machine Learning
15
0
154 people solved
Jan 30, 2026
Hard
Data ScientistExplain why the t-statistic helps
Suppose you estimate an effect size \(\hat{\beta}\) in a regression model or an A/B test and compute a standard error \(SE(\hat{\beta})\). Explain why...
Statistics & Math
16
0
212 people solved
Mar 13, 2026
Medium
Data ScientistCompare Shop and Web Ad Performance Without Overclaiming
Compare Shop and Web Ad Performance Without Overclaiming You have 28 days of daily ad data: `text ads_detail(advertiser_id, ad_id, ad_type, ad_objecti...
Analytics & Experimentation
2
0
28 people solved
May 22, 2026
Medium
Data ScientistMeasure scheduled posts feature success
Facebook is considering launching a new feature that allows users to schedule a post to be published at a future time. The product hypothesis is that ...
Analytics & Experimentation
12
0
141 people solved
Apr 30, 2026
Medium
Software EngineerGenerate all strings by expanding wildcards
Problem Given a string s consisting only of characters '0', '1', and '', replace every '' with either '0' or '1' and return all possible resulting bin...
Coding & Algorithms
19
1
158 people solved
Dec 15, 2025
Hard
Data ScientistEvaluate launching a vegan burger
Scenario You run a fast-food burger chain, and a rival has just launched a hit vegan burger. The question on the table: should you add a vegan burger ...
Analytics & Experimentation
41
0
373 people solved
Oct 13, 2025
Easy
Data EngineerInternAnswer Amazon Behavioral Questions
Question You are in the behavioral portion of an Amazon final-round interview (Software Development Engineer internship). Prepare strong, structured r...
Behavioral & Leadership
22
0
280 people solved
Feb 23, 2026
Medium
Machine Learning EngineerInternExplain Python and Systems Fundamentals
Answer the following software engineering fundamentals questions: 1. A production system has become very slow. How would you detect the bottleneck, me...
Software Engineering Fundamentals
13
0
105 people solved
Mar 12, 2026
Easy
Machine Learning Engineer LockedImplement Beam Search With Length Normalization
This question evaluates understanding and implementation of sequence decoding algorithms—greedy decoding and beam search—alongside sequence scoring wi...
Machine Learning
13
0
94 people solved
Apr 19, 2026
Medium
Software EngineerImplement a Single-Node Priority Pub/Sub
Implement a simplified in-memory publish-subscribe system that runs on a single machine. The system should support users subscribing to topics with a ...
Software Engineering Fundamentals
3
0
68 people solved
Apr 9, 2026
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