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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026

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>Build a 30-day plan from PracHub's Meta SWE questions.

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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

Check Alternating Highs and Lows Around a Circular Array

An array is connected end to end to form a circle. Determine whether its values strictly alternate between a high point and a low point around the ent...

Coding & AlgorithmsArrays & Strings
7
0
77 people solved
Sep 7, 2026
Stripe logo
Stripe
Medium
Software Engineer Locked

Register Data Centers and Route to the Nearest Healthy Region

Process a deterministic command language for registering data centers, changing health, measuring Haversine distance, and routing to healthy regions, ...

Coding & AlgorithmsSimulation & State Machines
80
2
716 people solved
Aug 13, 2026
Optiver logo
Optiver
Hard
Software EngineerIntern

Design an Event-Driven CPU Overheat Controller

Design an Event-Driven CPU Overheat Controller Design an OverheatPreventionController that simulates multiple processor cores without physical sensors...

Software Engineering FundamentalsSimulation & State Machines
468
2
4386 people solved
Jul 2, 2026
Google logo
Google
Medium
Software Engineer

Return all binary search tree keys inside an inclusive range

Given a binary search tree and an inclusive range [low, high], return every key in the tree that lies within the range, in ascending order. Function S...

Coding & AlgorithmsTrees
3
0
33 people solved
Sep 21, 2026
Sig logo
Sig
Medium
Software Engineer

Rotate a Square Matrix Clockwise While Both Diagonals Stay Fixed

Rotate a square matrix clockwise by 90 degrees a given number of times, except that every element on either diagonal stays where it is. The two diagon...

Coding & AlgorithmsGrids & Matrices
3
0
54 people solved
Sep 17, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Design Photo Storage with SHA-256 Content Deduplication and Safe Deletion

Design a photo storage service: users upload photos from their phones and computers, browse their libraries, view photos at different sizes, and delet...

System DesignFile & Media Storage
4
0
45 people solved
Sep 20, 2026
DoorDash logo
DoorDash
Hard
Software Engineer

Design a Food-Item Review System

Design a Food-Item Review System Design a system where customers can submit and read reviews for individual food items. Explain the product contract, ...

System Design
17
0
318 people solved
Sep 1, 2026
Google logo
Google
Medium
Software Engineer

Design Extensible Spreadsheet Aggregation APIs

Design an extensible spreadsheet aggregation API supporting get_sum, get_max, and get_min. Explain how a new aggregate can be added without duplicatin...

Software Engineering FundamentalsLow-Level Design (OOP)Code Quality & Maintainability
2
0
52 people solved
Sep 18, 2026
Rippling logo
Rippling
Medium
Backend EngineerSenior+

Design a News Aggregator That Builds Personalized Feeds from Publisher APIs

Design a news aggregator. The system pulls articles from many publishers through each publisher's API (major news outlets and similar sources) and giv...

System DesignSearch & Feed Systems
9
0
64 people solved
Sep 11, 2026
Jane Street logo
Jane Street
Medium
Quantitative TraderIntern

Estimate the Number of Florists in Sydney and Make a Market

Estimate the number of florist businesses operating in Sydney using a transparent Fermi model. Then quote a two-sided market around your estimate and ...

Statistics & MathEstimation & Market SizingProbability
34
0
617 people solved
Aug 24, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Design an In-Memory Object Manager with TTL

Design an In-Memory Object Manager with TTL Design and explain an in-memory object manager. Each object has a unique object_id and contains fields who...

Software Engineering Fundamentals
21
0
217 people solved
Aug 30, 2026
IBM logo
IBM
Easy
Software Engineer

Find the Minimum Shared Increment on Nonadjacent Array Positions

You may perform at most one operation on an integer array. Choose a set of pairwise nonadjacent indices and add the same nonnegative integer x to ever...

Coding & AlgorithmsArrays & Strings
9
1
65 people solved
Sep 15, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Return the K Smallest Pairwise Products of Two Sorted Arrays

You are given two integer arrays nums1 and nums2, each sorted in non-decreasing order, and an integer k. Every pair of indices (a, b) with 0 <= a < le...

Coding & AlgorithmsHeaps & Priority Queues
2
0
31 people solved
Sep 24, 2026
DRW logo
DRW
Hard
Quantitative ResearcherNew Grad

Expected Winnings in a Random-Walk Money Collection Game on 45 Stones

Forty-five stones are arranged in a circle, and each stone holds \$100. You place a token on a stone chosen uniformly at random and collect that stone...

Statistics & MathPuzzles & BrainteasersProbability
5
0
59 people solved
Sep 13, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Design a Cloud IDE That Edits and Runs Code in Browser-Accessible Workspaces

Design a cloud IDE: a service where developers open a project in the browser, edit its files, run the code, and use a terminal, while the files and th...

System DesignSandboxing & Isolation
6
0
44 people solved
Sep 21, 2026
Robinhood logo
Robinhood
Medium
Software Engineer

Compute Load Factors in a Service Dependency DAG

Compute Load Factors in a Service Dependency DAG For this portable practice version, implement computeLoadFactors(services, dependencies, entry) using...

Coding & Algorithms
29
0
221 people solved
Sep 1, 2026
Pinterest logo
Pinterest
Hard
Software Engineer

Fewest Subsequences of a Source String That Concatenate to a Target String

You are given two strings, source and target. A subsequence of source is any string obtained by deleting zero or more characters of source without cha...

Coding & AlgorithmsGreedy
5
1
44 people solved
Sep 19, 2026
Anthropic logo
Anthropic
Medium
Data Scientist

Describe a New Measurement That Changed a Business Decision

Describe a New Measurement That Changed a Business Decision Describe a time you introduced a new measurement and explain its business impact. State wh...

Behavioral & LeadershipProject Deep DiveMetrics & KPIs
3
0
24 people solved
Sep 28, 2026
Together AI logo
Together AI
Easy
Software Engineer

Split a Chunked Text Stream into Line-Balanced Parts

A text file arrives through an iterator that yields arbitrary string chunks. Split its content into n ordered parts while keeping every line intact an...

Coding & AlgorithmsArrays & Strings
6
0
53 people solved
Sep 15, 2026
Google logo
Google
Medium
Software Engineer

Find the nearest common manager of K employees in a reporting tree

A company's reporting structure forms a tree. Employees are numbered 0 to n - 1. Every employee except one has exactly one direct manager; the remaini...

Coding & AlgorithmsTrees
2
0
38 people solved
Sep 21, 2026
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