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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
Salesforce logo
Salesforce
Easy
Backend Engineer

Design an Elevator Control System

Design an object-oriented elevator control system for a building with multiple floors and multiple elevators. The system should support: - Hall reques...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
18
0
157 people solved
Dec 4, 2025
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
Machine Learning Engineer

Solve linked list, tree, and grid problems

Problem A — Find cycle entry in a singly linked list You are given the head of a singly linked list. The list may contain a cycle. - Return the node w...

Coding & AlgorithmsLinked ListsGrids & Matrices
21
0
151 people solved
Dec 15, 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
Salesforce logo
Salesforce
Medium
Software Engineer Locked

Implement common data-structure and JS tasks

This multi-part prompt evaluates core competencies in data structures and algorithms (time-based key-value design, duplicate removal in sorted linked ...

Coding & AlgorithmsData Structure DesignJavaScript & TypeScript
15
0
199 people solved
Feb 12, 2026
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
Microsoft logo
Microsoft
Medium
Machine Learning Engineer Locked

Design chat and online chess

This question evaluates a candidate's ability to design large-scale, real-time consumer systems, testing competencies in scalable architecture, data m...

System DesignReal-Time SystemsMultiplayer Game Systems
10
0
91 people solved
Feb 23, 2026
Klaviyo logo
Klaviyo
Hard
Software Engineer

Design banking with scheduled transfers and merges

Design banking with scheduled transfers and merges In-Memory Banking System with Scheduled Payments and Account Merges Design and implement a single-t...

System DesignData Structure DesignSimulation & State Machines
23
0
166 people solved
Jul 15, 2025
xAI logo
xAI
Medium
Software Engineer Locked

Design a backend for an online checkers game

This question evaluates system design and backend engineering competencies, including authoritative game-state modeling, turn-based concurrency contro...

System DesignMultiplayer Game SystemsAPI Design
23
0
184 people solved
Feb 11, 2026
Google logo
Google
Medium
Software Engineer

Maximize coins collected by 3-step pieces

You are given a 1D board of length N. Each cell is in one of three states: - Empty - Piece (a movable token) - Coin (collectible) In one move, you may...

Coding & AlgorithmsSimulation & State Machines
8
0
133 people solved
Sep 5, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Build the Largest Available Sequence

This question evaluates algorithmic problem-solving skills in state simulation, constrained selection, and lexicographic sequence maximization, measur...

Coding & AlgorithmsGreedy
6
0
101 people solved
Apr 14, 2026
Envoy logo
Envoy
Easy
Software Engineer

Design a shopping cart with coupons and tax

Design an object-oriented shopping cart module for an e-commerce system. Requirements: - A cart can add items and update item quantities. - The cart s...

Software Engineering FundamentalsLow-Level Design (OOP)
13
0
128 people solved
Mar 11, 2026
Oracle logo
Oracle
Medium
Software Engineer Locked

Apply operations efficiently using Command pattern

This question evaluates skills in object-oriented design, the Command Pattern, correctness reasoning, extensibility of operation abstractions, and opt...

Software Engineering FundamentalsLow-Level Design (OOP)Code Quality & Maintainability
6
0
83 people solved
Feb 12, 2026
Microsoft logo
Microsoft
Medium
Data Scientist

Parking Lot With Big, Medium and Small Spaces: Accept or Reject Each Arriving Car

A parking lot has three kinds of spaces, big, medium and small, with a fixed number of each. Cars arrive one at a time, and each car has a type: 1 for...

Coding & AlgorithmsSimulation & State Machines
0
0
1 people solved
Aug 28, 2026
SoFi logo
SoFi
Easy
Software Engineer

Count completed car journeys from sensor logs

You are given a time-ordered list of highway sensor logs. Each log entry contains: - timestamp (integer; strictly increasing) - sensor_type (one of "E...

Coding & AlgorithmsSimulation & State Machines
10
0
160 people solved
Jan 3, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Simulate a Throttled Function Wrapper That Keeps Only the Latest Pending Call

A throttle wrapper limits how often a function actually runs. You are given the cooldown length t and the times at which the wrapped function is calle...

Coding & AlgorithmsSimulation & State Machines
1
0
14 people solved
Apr 15, 2026
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