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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
476
Companies
980
Updated
11.10.2026
476 Questions 980 Companies11.10.2026
PLTCHK testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
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."

PLTCHK testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
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
Visa logo
Visa
Medium
Software Engineer

Design rotating warehouse simulator with closures

Given an integer array cap[0..n-1] for warehouses 0..n-1 and a sequence of events, simulate package processing. Events: ( 1) "PACKAGE": process one pa...

Coding & AlgorithmsSimulation & State MachinesData Structure Design
26
0
196 people solved
Sep 6, 2025
Google logo
Google
Hard
Software Engineer

Design an elevator control system

Elevator Control System Design (N floors, M elevators) Context You are designing a multi-elevator control system for a building with N floors (1..N) a...

System DesignLow-Level Design (OOP)Simulation & State Machines
27
0
196 people solved
Sep 6, 2025
Oracle logo
Oracle
Medium
Software Engineer

Determine if robot path is bounded

Determine if robot path is bounded A robot starts at (0, 0) facing North on an infinite grid. It executes a string s consisting of 'G' (move forward 1...

Coding & AlgorithmsSimulation & State Machines
11
0
115 people solved
Jul 26, 2025
Ramp logo
Ramp
Medium
Software Engineer Locked

Build a simplified Wordle game in React

This question evaluates a candidate's competency in React-based front-end development, covering component design, state management, asynchronous HTTP ...

Coding & AlgorithmsReact & UI FrameworksState Management
25
0
202 people solved
Jan 18, 2026
Lyft logo
Lyft
Medium
Software Engineer

Solve grid compromise spread with BFS

You are given an m×n grid representing a data center: 0 = empty rack, 1 = secure server, 2 = compromised server. Each minute, any secure server that i...

Coding & AlgorithmsGrids & MatricesGraphs
21
0
139 people solved
Sep 6, 2025
PayPal logo
PayPal
Medium
Data Scientist

Design elevator scheduling for small building

Design elevator scheduling for small building Design the control policy for a single elevator serving a small building: 3 floors plus 1 basement (stop...

System DesignSimulation & State MachinesSystem Design Fundamentals
11
0
134 people solved
Jul 31, 2025
Google logo
Google
Medium
Product Manager

Moving people through 100 floors: elevator layout, call dispatch and wait-time metrics

A tower 100 floors tall needs a way to move the people who use it between its floors. Present your elevator design for it: who will ride and at what t...

System DesignProduct SenseMetrics & KPIs
1
0
17 people solved
Nov 17, 2025
Google logo
Google
Medium
Software Engineer

Design an elevator control system

Design the software for a multi-elevator control system in a high-rise building. Specify classes, scheduling algorithms for car assignments, handling ...

System DesignLow-Level Design (OOP)Simulation & State Machines
15
1
169 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Medium
Data Scientist

Design Schema for Accurate Subscription State Tracking

subscription_events +----------+---------------------+-----------+-----------+ | user_id | event_ts | event_type| plan_type | +----------+...

Data Manipulation (SQL/Python)SQLDimensional Modeling
151
0
513 people solved
Aug 4, 2025
Instacart logo
Instacart
Hard
Software EngineerSenior+ AI Locked

Design a bus simulation metric

This question evaluates a candidate's ability to comprehend and navigate a large unfamiliar codebase, safely make targeted code changes, and design, i...

Software Engineering FundamentalsAI-Assisted DevelopmentTesting & Quality
10
0
87 people solved
Jan 29, 2026
Capital One logo
Capital One
Medium
Machine Learning Engineer Locked

Implement string/matrix simulations and counting pairs

This multi-part question evaluates implementation skills in string processing (case-insensitive substring matching), grid simulation with iterative ma...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
12
0
105 people solved
Jan 12, 2026
Meta logo
Meta
Medium
Software Engineer

Design an online chess platform

Design an online chess platform. Requirements: - User matchmaking (ranked/unranked). - Real-time gameplay with low latency moves. - Enforce game rules...

System DesignMultiplayer Game SystemsSystem Design Fundamentals
8
0
73 people solved
Feb 25, 2026
Cisco logo
Cisco
Hard
Software Engineer Locked

Formalize a Minimum-Trip Transport Puzzle with Horses and Ladders

Model a horses-and-ladders transport puzzle by clarifying legal moves, tracking resource state, and proving a minimum-trip plan is optimal.

Statistics & MathGraphsPuzzles & Brainteasers
3
0
32 people solved
Sep 17, 2026
TikTok logo
TikTok
Hard
Software Engineer Locked

Solve four OA algorithm problems

This multi-part exercise evaluates algorithmic problem-solving across combinatorics and geometry (counting axis-aligned square subgrids), string reord...

Coding & AlgorithmsSimulation & State MachinesMath & Number Theory
12
0
171 people solved
Jan 22, 2026
Microsoft logo
Microsoft
Medium
Product Manager

Path-Planning Algorithm for a Wheeled Robot Crossing a Room Around Fixed Obstacles

Design an algorithm that gets a robot from a starting point A to a destination point B inside a room, and walk through it step by step. The setting: -...

Software Engineering FundamentalsGraphsGrids & Matrices
1
0
11 people solved
Nov 23, 2025
Meta logo
Meta
Medium
Data Engineer

Solve four algorithmic library problems

Solve the following coding tasks: 1) Maximum Points from Different Categories: Given an array of items (category, points) and an integer k, choose exa...

Coding & AlgorithmsGreedyArrays & Strings
16
0
158 people solved
Aug 13, 2025
Meta logo
Meta
Medium
Data Engineer

Solve library coding tasks in Python

Solve library coding tasks in Python Implement the following Python tasks: 1) Given a list of (category, points) for books, choose up to 3 books with ...

Coding & AlgorithmsSimulation & State Machines
15
0
108 people solved
Jul 16, 2025
Google logo
Google
Medium
Software Engineer Locked

Simulate meeting-room bookings and return busiest room

This question evaluates a candidate's competence in scheduling and resource-allocation algorithms, focusing on simulation of interval-based bookings, ...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
19
1
201 people solved
Mar 1, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Solve restaurant path and order event tasks

You are given two independent coding tasks. Task 1: Shortest paths in a restaurant grid Context: A restaurant is represented as a 2D grid. The waiter ...

Coding & AlgorithmsDynamic ProgrammingDistributed Transactions & Idempotency
31
0
250 people solved
Dec 8, 2025
Robinhood logo
Robinhood
Medium
Software EngineerSenior+

Fractional Share Orders: Keep Brokerage Inventory Below One Share

A brokerage lets its customers buy and sell fractional shares, but the exchange trades only whole shares. To bridge the gap, the brokerage keeps a sma...

Coding & AlgorithmsSimulation & State Machines
5
0
36 people solved
Feb 11, 2026
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