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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
Atlassian logo
Atlassian
Medium
Software Engineer

Compute top-N posts in a workspace

Design a feature that returns the top-N posts (e.g., Confluence pages/blog posts) in a workspace. Requirements: - Define what “top” means (e.g., views...

System DesignSearch & Feed SystemsSystem Design Fundamentals
21
1
206 people solved
Jan 5, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Move Work Forward Across Teams

Explain how you advanced cross-team work by clarifying dependencies, ownership, competing priorities, and evidence of the outcome.

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
4
0
33 people solved
Aug 25, 2026
Google logo
GoogleAmazonZoho

Also asked at Zoho, Nextdoor, TikTok, Microsoft, Apple, NVIDIA, VK

Medium
Software Engineer

Compare Dotted Revision Values with Missing Zeros

Problem Compare two valid version strings as sequences of integer revisions separated by dots. Ignore leading zeros within a revision. Compare revisio...

Coding & AlgorithmsParsing & Interpreters
0
0
15 people solved
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Design a Resilient Bootstrap API Aggregator

Design a bootstrap endpoint that accepts userId. Make the API or object boundaries explicit, then cover invariants, edge cases, testing strategy, and ...

Software Engineering FundamentalsAPI DesignConcurrency
30
0
212 people solved
Aug 3, 2026
CloudKitchens logo
CloudKitchens
Medium
Software Engineer

Implement menu parser and serializer

Menu parser and serializer You are given a restaurant menu stored as plain text, where indentation represents a hierarchy of categories and items. Imp...

Coding & AlgorithmsParsing & InterpretersTrees
23
0
311 people solved
Nov 7, 2025
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Design a Multi-Level In-Memory Cloud Storage Service

Design staged in-memory cloud storage with prefix ranking, user capacity, merging, and conflict-aware backup and restore while surfacing unspecified s...

Software Engineering Fundamentals
11
0
78 people solved
Aug 25, 2026
TikTok logo
TikTok
Medium
Product Manager

Designing Metrics and Experiments to Evaluate a TikTok For You Ranking Change

TikTok changes the recommendation algorithm behind its feed frequently. How would you measure the impact of an algorithm update on user engagement? Ex...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
1
0
10 people solved
Aug 14, 2026
Google logo
GoogleBloombergMeta

Also asked at Meta, Microsoft, TCS

Easy
Software Engineer

Recognize the Three Valid Capitalization Patterns

Problem Return whether word uses one of three patterns: all uppercase letters, all lowercase letters, or only its first letter uppercase. Input contai...

Coding & AlgorithmsArrays & Strings
1
0
16 people solved
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Microsoft, Uber, Infosys, Visa, Pega

Easy
Software Engineer

Reduce a Decimal Integer to One Digit

Problem Repeatedly replace num by the sum of its decimal digits until one digit remains. Return that final digit. `cpp int addDigits(int num); ` Examp...

Coding & AlgorithmsMath & Number Theory
1
0
13 people solved
Oracle logo
Oracle
Medium
Backend EngineerSenior+ Locked

Split a String into Exactly Three Palindromes

Determine whether an input string can be divided into exactly three nonempty contiguous palindromes that cover every character without overlap or reor...

Coding & Algorithms
2
0
33 people solved
Aug 10, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Debug a transformer training pipeline

Debug a Transformer training pipeline You are handed a PyTorch Transformer encoder–decoder training pipeline that misbehaves. The pipeline includes to...

Machine LearningML CodingNeural Networks & Training
79
0
1384 people solved
Jul 31, 2025
Deshaw logo
Deshaw
Medium
Software Engineer Locked

Compare Linux Containers and Virtual Machines

Compare Linux containers and virtual machines through kernels, isolation, resource controls, compatibility, security tradeoffs, and combined deploymen...

Software Engineering FundamentalsContainers & OrchestrationOperating Systems
5
1
68 people solved
Aug 25, 2026
Citadel logo
Citadel
Medium
Software Engineer

Compute max team size with a core interval

You are given n employees’ working-time intervals, where employee i works during the inclusive interval [startTime[i], endTime[i]]. You want to form a...

Coding & AlgorithmsIntervals & SchedulingMath & Number Theory
28
0
361 people solved
Dec 25, 2025
Databricks logo
Databricks
Medium
Software Engineer

Find k customers with least revenue

Problem You are given a list of purchase events. Each event contains: - customer_id (string or int) - amount (integer, may be 0; assume non-negative u...

Coding & AlgorithmsHeaps & Priority Queues
38
0
516 people solved
Feb 12, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Rectangle Store With Constant-Time Point Coverage Counts and Removal by ID

Implement a data structure that stores axis-aligned rectangles, each identified by an id, and answers point queries. It supports three operations: - a...

Software Engineering FundamentalsData Structure Design
1
0
10 people solved
Jul 13, 2026
Infosys logo
InfosysGoogleAmazonUber

Also asked at Amazon, Uber

Easy
Software Engineer

Maximize Array Sum after Exactly K Sign Changes

Problem One operation selects an index and negates its value. Apply exactly k operations; the same index may be selected repeatedly. Return the greate...

Coding & AlgorithmsGreedySorting
1
0
11 people solved
Google logo
Google
Medium
Software Engineer

Highest Product of Edge Success Probabilities

Problem The graph has n nodes 0..n-1 and undirected edges with success probabilities succProb. A path's success probability is the product of its edge...

Coding & AlgorithmsGraphsHeaps & Priority Queues
1
0
16 people solved
TikTok logo
TikTok
Easy
Software EngineerIntern Locked

Trace Source Code to an Executable

Trace source code through preprocessing, compilation, assembly, and linking, and explain object files, symbol errors, libraries, and executable loadin...

Software Engineering FundamentalsProgramming LanguagesOperating Systems
4
0
37 people solved
Sep 5, 2026
Google logo
Google
Medium
Product Manager

Choosing a product to build from unlimited global location data, privacy set aside

Suppose you could use every kind of location data that exists anywhere in the world, and privacy was not a constraint. What product would you build, a...

Product Design & StrategyProduct Sense
1
0
10 people solved
Aug 28, 2026
Wayfair logo
Wayfair
Medium
Product Manager

Wayfair: Finding Hidden B2B Buyers, Spotting Designers and Choosing Outreach Targets

Wayfair sells home furnishings both to consumers and to business buyers, but many businesses shop through ordinary accounts, so there is no simple way...

Analytics & ExperimentationSegmentation & Cohort AnalysisExperiment Analysis & Readout
0
0
11 people solved
Aug 17, 2026
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