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
Software Engineer LockedImplement Datacenter Router Commands
This question evaluates proficiency in stateful command processing, input validation, geospatial computation (Haversine distance), deterministic sorti...
Coding & Algorithms
2
0
17 people solved
Jun 5, 2026
Easy
Software EngineerImplement Chat Event Counter
Design an in-memory counter for chat activity. You need to implement a class with the following two methods: `text processEvent(userId: string, chatId...
Coding & Algorithms
2
0
26 people solved
Apr 10, 2026
Medium
Data ScientistSenior+Design a Maps Address Search Bar
Design the search experience for a map application's address bar, similar to the search box in Google Maps. The system should handle multiple user int...
Analytics & Experimentation
5
0
58 people solved
Apr 10, 2026
Medium
Software EngineerSenior+Implement SQL Table and DNA Ordering
Two independent coding exercises were asked. Solve both. Problem A: CSV-backed in-memory table Build a tiny in-memory relational table initialized fro...
Coding & Algorithms
2
0
29 people solved
Apr 10, 2026
Medium
Data Engineer LockedDesign an event analytics platform
This question evaluates a candidate's skills in data engineering and system design for event analytics, covering platform architecture, data ingestion...
System Design
18
0
190 people solved
Apr 10, 2026
Medium
Software EngineerUpdate a Neuron Grid
You are given an m x n integer matrix neurons. - A cell is a firing neuron if its value is 0. - A cell is a non-firing neuron if its value is greater ...
Coding & Algorithms
9
1
183 people solved
Feb 22, 2026
Medium
Software Engineer LockedDesign an Event Booking System
This question evaluates system architecture, distributed systems, data modeling, concurrency control for seat inventory, transactional integrity for b...
System Design
3
0
59 people solved
Feb 22, 2026
Medium
Software EngineerSenior+Solve Signature, File, and Queue Problems
Solve the following interview-style problems: 1. Function signature matching You are given a registry of function definitions. Each function has an...
Coding & Algorithms
5
0
51 people solved
Feb 22, 2026
Medium
Data ScientistDescribe leadership and inclusion examples
Prepare strong behavioral answers for the following prompts: - Tell me about a breakthrough project you led or meaningfully influenced. - Tell me abou...
Behavioral & Leadership
3
0
48 people solved
Feb 22, 2026
Medium
Software Engineer LockedImplement CSAT tracking and call timing
This question evaluates skills in designing efficient streaming/rolling-window data structures and stateful updates for real-time metrics, alongside p...
Coding & Algorithms
12
0
137 people solved
Jan 11, 2026
Hard
Data ScientistHow Would You Test Whether Momentum Is a Real Alpha Signal in Stocks?
In a quantitative-research data-analysis round, you are asked a methodology question. No coding is required — the interviewer wants you to reason like...
Machine Learning
3
0
38 people solved
Oct 28, 2025
Medium
Software EngineerSolve three scheduling and array problems
In this round you are given three separate coding problems to solve. --- Problem 1: Schedule tasks with cooldown You are given: - A list of tasks, whe...
Coding & Algorithms
16
0
124 people solved
Oct 28, 2025
Medium
Software EngineerCompute account balances with rejection and overdraft
You are given a list of transaction records as strings. Each record has the format: ` account_id,timestamp,currency,amount ` - account_id: string iden...
Coding & Algorithms
2
0
22 people solved
Dec 3, 2025
Hard
Software EngineerDesign and Implement a Mini SQL Query Engine
You're given a set of in-memory tables — each table is a collection of rows over a known, typed schema (e.g., a table is a list of row objects, and ea...
System Design
3
0
27 people solved
Jan 10, 2026
Medium
Software Engineer AIImplement a Word Guessing Game
Implement a four-letter word guessing game. You are given: - A dictionary containing valid four-letter English words. - A target word selected from th...
Coding & Algorithms
3
1
38 people solved
Jan 10, 2026
Medium
Frontend EngineerBuild a Race-Free Memory Card Game in React
Build a Race-Free Memory Card Game in React Implement the interaction logic for a React memory-card game. Every card has a stable ID and a match value...
Software Engineering Fundamentals
1
0
14 people solved
Apr 9, 2026
Medium
Software EngineerDesign an Agentic Ticket Support System
Design an AI-powered ticket support system. The system must integrate with two existing external systems: 1. Ticket system: Displays all support ticke...
ML System Design
9
0
70 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 Engineer LockedFind the Maximum Number of Concurrent Processes
Practice a Amazon coding interview problem focused on find the maximum number of concurrent processes. The prompt emphasizes edge cases, clean impleme...
Coding & Algorithms
0
0
8 people solved
Jun 4, 2026
Hard
Software Engineer LockedEvaluate an Arithmetic Expression in Postfix Notation
Practice a Amazon coding interview problem focused on evaluate an arithmetic expression in postfix notation. The prompt emphasizes edge cases, clean i...
Coding & Algorithms
0
0
5 people solved
Jun 4, 2026