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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
Microsoft logo
Microsoft
Medium
Software Engineer Locked

In-Memory URL Shortener: Encode and Decode

This question evaluates a candidate's ability to design a class-based data structure with paired encode and decode operations that maintain a consiste...

Coding & Algorithms
11
0
153 people solved
Jun 12, 2026
ByteDance logo
ByteDance
Medium
Data Engineer Locked

Choose Components for a Data Warehouse

Compare Hive, Spark, Hadoop components, and SQL Server by storage, compute, governance, latency, scale, and operational trade-offs.

Software Engineering Fundamentals
2
0
47 people solved
Aug 28, 2026
Meta logo
MetaGoogleBloomberg

Also asked at Bloomberg, Microsoft, Amazon

Medium
Software Engineer

Sum Investment Values after Two Independent Group Tests

Problem Report tiv_2016, rounded to two decimal places, summing policies that share their tiv_2015 with at least one other policy and whose exact (lat...

Data Manipulation (SQL/Python)SQL
0
0
7 people solved
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, Samsung, Meta, Uber, Innovaccer, Stackline

Hard
Software Engineer

Grow Capital by Selecting Affordable Projects

Problem You start with capital w and may complete at most k distinct projects. Project i requires your current capital to be at least capital[i]; comp...

Coding & AlgorithmsGreedyHeaps & Priority Queues
1
0
17 people solved
Google logo
GoogleBloomberg
Hard
Software Engineer

Best Upward Board Score and Number of Optimal Routes

Problem Start at S in the bottom-right corner of the square board and reach E in the top-left. Each move goes up,left or diagonally up-left to a non-X...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
0
0
9 people solved
Lyft logo
Lyft
Medium
Data Scientist

Design experiments for marketplace balance

You propose a new supplier prioritization (ranking) policy intended to increase order completion in a two-sided marketplace with known interference be...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
32
0
220 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Product Manager

Creating a Gen Z-Focused Product Experience Inside Facebook

You are interviewing for a product manager role at Meta. The interviewer wants a new product or feature on Facebook that is built for Gen Z, the gener...

Product Design & StrategyProduct SenseMetrics & KPIs
1
0
12 people solved
Sep 24, 2026
Nuro logo
NuroMetaMicrosoft

Also asked at Microsoft, Applied Intuition, Google, Anduril, Robinhood, Amazon, TikTok

Medium
Software Engineer Locked

Reveal a Minesweeper Board

Implement the reveal operation for a Minesweeper board. Correctly handle mine clicks, numbered cells, and recursive empty-region expansion across all ...

Coding & Algorithms
5
0
39 people solved
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Zopsmart, Meta, Flexport

Medium
Software Engineer

Count Position Matches and Remaining Digit Matches

Problem Return a Bulls and Cows hint for secret and guess. Bulls are equal digits at equal positions. Cows are the remaining guess digits that can mat...

Coding & AlgorithmsArrays & Strings
1
0
15 people solved
Google logo
GoogleMicrosoftAmazon
Easy
Software Engineer

Order Integers by Set-Bit Count Then Value

Problem Sort arr by increasing number of 1 bits in each value's binary representation. If bit counts tie, order by increasing numeric value. Return th...

Coding & AlgorithmsSortingBit Manipulation
1
0
11 people solved
LinkedIn logo
LinkedIn
Easy
Data Scientist

Analyze member video posting behavior by country

Question You are given two tables describing LinkedIn members and the videos they upload. Write SQL (and optionally Python where noted) to answer the ...

Data Manipulation (SQL/Python)SQL
14
3
202 people solved
Feb 1, 2026
Amazon logo
Amazon
Hard
Software Engineer

Finish the Orange Supply in the Fewest Days

Problem Start with n oranges. Each day choose one available action: eat one orange; when the current count is divisible by two, eat half; or when it i...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
1
0
9 people solved
Amazon logo
Amazon
Hard
Software Engineer

Design delayed job scheduler (LLD)

Design a Delayed Job Scheduler (Low-Level Design) Design a service that schedules a job to execute X seconds in the future with second-level accuracy....

System DesignJob Scheduling & WorkflowsLow-Level Design (OOP)
55
0
757 people solved
Aug 7, 2025
Pinterest logo
Pinterest
Medium
Data ScientistSenior+ Locked

Size an Opportunity and Present It with Clear Visuals

Structure a data science case that sizes a business opportunity from partial information and presents it to senior decision-makers. Build top-down and...

Analytics & Experimentation
16
0
106 people solved
Jun 14, 2026
Waymo logo
Waymo
Medium
Frontend Engineer

Build a React naval board

Build a simplified, single-player Battleship-style game board in React. There is no opponent, no turn-taking, and no networking — you are implementing...

Software Engineering FundamentalsReact & UI FrameworksState Management
30
0
339 people solved
Apr 1, 2026
DoorDash logo
DoorDash
Easy
Data Scientist

Switchback vs. Geo Randomization for Experiments in a Delivery Marketplace

A food-delivery marketplace connects customers, merchants and couriers. In an experiment-design interview you are asked, in detail, how you would run ...

Analytics & ExperimentationExperiment Design (A/B Testing)
0
0
5 people solved
Aug 8, 2026
Instacart logo
Instacart
Medium
Machine Learning Engineer

Design an Advertising Ranking Pipeline beyond Calibration

Design the end-to-end machine-learning pipeline for selecting and ranking ads in a grocery product. Explain the components, the models and losses you ...

Machine LearningCTR Prediction & Ads MLML System Design
0
0
8 people solved
Jul 15, 2026
Google logo
Google
Medium
Software EngineerIntern

Describe Key Behavioral Examples

Prepare to answer behavioral questions based on past internship or project experience. Common prompts include: 1. Tell me about a time when you disagr...

Behavioral & LeadershipConflict & CollaborationAmbiguity & Decision Making
69
0
470 people solved
Mar 19, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Simulate Turn-Based Monster Battles

This question evaluates the ability to implement a turn-based battle simulation with correct state management, turn semantics, knockout handling, dama...

Coding & AlgorithmsSimulation & State MachinesData Structure Design
29
0
239 people solved
Mar 9, 2026
Google logo
GoogleAmazon
Easy
Software Engineer

Count Distinct Concatenated Morse Encodings

Problem Encode each lowercase word by concatenating the Morse strings of its letters without separators. Return the number of different encoded string...

Coding & AlgorithmsArrays & Strings
1
0
14 people solved
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