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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
Capital One logo
Capital One
Medium
Software Engineer

Find the First Array Element Smaller Than Both of Its Neighbors

Given an array of integers, find the first element, scanning from left to right, whose two adjacent neighbors are both strictly larger than it. Functi...

Coding & AlgorithmsArrays & Strings
1
0
16 people solved
Aug 4, 2026
Cursor logo
Cursor
Hard
Software Engineer

Implement 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 & AlgorithmsTrees
42
0
435 people solved
Feb 14, 2026
Google logo
Google
Hard
Software EngineerSenior+ Locked

Infection Spread on a Grid (Cellular Automaton)

This question tests a candidate's ability to implement and optimize a synchronous cellular automaton simulation on a 2D grid, assessing proficiency in...

Coding & Algorithms
19
0
125 people solved
Jun 14, 2026
Karat logo
Karat
Medium
Software Engineer

Implement obstacle-course run statistics

You are given a TypeScript codebase for tracking race results on an obstacle course. - A Course has a fixed number of obstacles. - A Run stores the ti...

Coding & AlgorithmsProbability
20
0
203 people solved
Apr 12, 2026
Google logo
Google
Medium
Software Engineer Locked

Build Prefix Lookup with a Trie

Practice a Google coding interview problem focused on build prefix lookup with a trie. The prompt emphasizes edge cases, clean implementation, and ver...

Coding & Algorithms
13
2
81 people solved
Jul 3, 2026
Jane Street logo
Jane Street
Hard
Software Engineer Locked

Optimize trade PnL table updates

This question evaluates understanding of incremental aggregation and state management, including handling overlapping predicates, caching expensive or...

Coding & AlgorithmsData Structure Design
50
0
532 people solved
Feb 18, 2026
Google logo
Google
Medium
Software Engineer Locked

Minimize Direction Violations in a Directed Road Network

Find a route through a directed road network that minimizes travel against the original edge directions. Model forward and reverse traversal costs cor...

Coding & AlgorithmsGraphs
67
5
475 people solved
Jul 5, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Implement a Time-Aware Task Manager

This question evaluates the ability to design and implement in-memory data structures and algorithms for time-aware state management, including per-us...

Coding & Algorithms
22
0
160 people solved
May 17, 2026
Pinterest logo
Pinterest
Medium
Software Engineer

Extend an Existing Endpoint Cache and Prove It with Tests

Extend an Existing Endpoint Cache and Prove It with Tests You inherit a service in which one endpoint already uses a shared cache interface and a simi...

Software Engineering Fundamentals
3
0
38 people solved
Aug 16, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Track Expiring GPU Credits

This question evaluates event-replay and time-window accounting skills, including temporal data structures, priority-based consumption, out-of-order e...

Coding & AlgorithmsData Structure DesignHeaps & Priority Queues
30
0
250 people solved
Mar 9, 2026
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Traverse All Reachable Pages With Parallel BFS

Return every web page reachable from a starting page in stable breadth-first discovery order, including the start exactly once. Handle cycles, duplica...

Coding & AlgorithmsGraphsStacks & Queues
15
0
134 people solved
Jul 11, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad Locked

Recover from a Missed Deadline

Develop an honest missed-deadline story that traces the original commitment, early warning signs, stakeholder communication, and recovery choices. Com...

Behavioral & LeadershipFailure & LearningOwnership & Execution
35
0
562 people solved
Jul 15, 2026
Shopify logo
Shopify
Medium
Software EngineerSenior+ Locked

Harden a URL-Caching HTTP Service for Production

Plan two safe iterations to harden an in-memory URL-caching HTTP service for production. Cover error boundaries and status codes, privacy-aware teleme...

Software Engineering FundamentalsAPI DesignCaching
12
0
109 people solved
Jul 7, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer Locked

Evaluate Noisy Data for LLM Post-Training

This question evaluates competency in post-training data curation and experimental judgment for large language models, including assessing noisy datas...

Machine LearningFine-Tuning & Alignment TechniquesAnnotation & Label Quality
29
0
297 people solved
May 31, 2026
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Allocate an Order from the Oldest Inventory Batches

Allocate an order from inventory batches in oldest-first order without mutating the input, honoring the reference-ID tie-break and reporting both per-...

Coding & Algorithms
8
0
97 people solved
Aug 1, 2026
Tekion logo
Tekion
Medium
Software EngineerSenior+

Count Open Lockers After 100 Rounds

A hallway contains 100 lockers, numbered 1 through 100. All begin closed. - In round 1, open every locker. - In round 2, close every second locker. - ...

Statistics & MathMath & Number TheoryPuzzles & Brainteasers
2
0
21 people solved
Sep 10, 2026
C3 AI logo
C3 AI
Medium
Data ScientistIntern

Compare How Models Respond to Multicollinearity

Compare How Models Respond to Multicollinearity Compare multicollinearity in unregularized linear regression, L1-regularized linear regression, a deci...

Machine LearningRegression & Statistical ModelingSupervised Learning
0
0
10 people solved
Sep 15, 2026
Nuro logo
Nuro
Medium
Software Engineer

Design a Scheduler for Weekly Self-Driving Simulation Jobs with Dependent Phases

Design a job scheduler for a self-driving car simulation platform. Every week the platform runs about 10,000 simulation cases. Each case is a job made...

System DesignJob Scheduling & WorkflowsFault Tolerance & Failover
0
0
11 people solved
Aug 21, 2026
DocuSign logo
DocuSign
Easy
Software Engineer Locked

Compress Consecutive Integer Ranges

Practice sorting and compressing integers into a canonical comma-separated representation of maximal consecutive ranges.

Coding & Algorithms
2
0
27 people solved
Aug 27, 2026
J.P. Morgan logo
J.P. Morgan
Easy
Software Engineer Locked

Implement an O(1) LRU Cache

Implement a fixed-capacity LRU cache whose successful reads and writes update recency, evicting exactly the least recently used entry while keeping ea...

Coding & Algorithms
17
1
139 people solved
Aug 1, 2026
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