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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
Snapchat logo
SnapchatGoogleAmazon

Also asked at Amazon, Meta, Goldman Sachs, TCS, Bloomberg, Microsoft, EPAM Systems, Yandex, Apple, Morgan Stanley, Walmart Labs, IBM, Deloitte, Oracle, JPMorgan Chase, LinkedIn, Zoho, NVIDIA

Medium
Software Engineer

Find index of first unique character

Find index of first unique character Given a string s, return the index of the first character that appears exactly once; if none exists, return -1. A...

Coding & Algorithms
13
0
98 people solved
Amazon logo
Amazon
Medium
Software Engineer Locked

Influence a Colleague Who Prefers a Different Approach

Describe influencing a colleague through shared goals, fair comparison, evidence, willingness to revise, and a concrete collaborative decision.

Behavioral & LeadershipLeadership & InfluenceConflict & Collaboration
1
0
22 people solved
Sep 14, 2026
Voleon logo
Voleon
Hard
Machine Learning EngineerNew Grad Locked

Explain ML and statistical modeling

This question evaluates mastery of machine learning and statistical modeling concepts including class-imbalance strategies, loss function behavior and...

Machine LearningML FundamentalsRegression & Statistical Modeling
21
1
279 people solved
Feb 15, 2026
Replit logo
Replit
Medium
Software Engineer Locked

Design a Multi-Channel Notification System

Design a notification platform that routes one logical request across in-app, email, SMS, or push channels under user preferences. The system must han...

System Design
29
1
225 people solved
Aug 3, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Deloitte, HashedIn

Medium
Software Engineer

Find the Earliest Time All Parallel Mechanics Finish

Problem Mechanic i has rank ranks[i] and needs ranks[i] c c minutes to repair c cars. All mechanics work simultaneously. Given the total number cars...

Coding & AlgorithmsBinary SearchMath & Number Theory
0
0
12 people solved
Meta logo
Meta
Medium
Backend Engineer AI Locked

Solve coding and AI-assisted tasks

This set evaluates algorithmic problem-solving across arrays, immutable linked-list interfaces, parent-pointer tree traversal, string validity via min...

Coding & AlgorithmsGrids & MatricesLinked Lists
22
0
168 people solved
Apr 8, 2026
J.P. Morgan logo
J.P. Morgan
Medium
Machine Learning Engineer Locked

Return Every Index Pair Whose Values Sum to a Target

Return every distinct pair of array indices whose values add to a target, including all valid combinations created by duplicates. Skills under review ...

Coding & AlgorithmsArrays & Strings
22
0
177 people solved
Aug 5, 2026
Google logo
GoogleMicrosoftAmazon

Also asked at Amazon, Bloomberg, Meta

Easy
Software Engineer

Can All Values Be Rearranged into an Arithmetic Progression?

Problem Determine whether every entry of arr can be reordered so that consecutive differences are all equal. Return true or false; no particular rearr...

Coding & AlgorithmsSortingMath & Number Theory
0
0
9 people solved
Grammarly logo
Grammarly
Medium
Software Engineer Locked

Implement a rate limiter and a pub/sub API

This question evaluates competency in concurrency control, synchronization, API and low-level system design, and messaging system concepts by combinin...

Software Engineering FundamentalsRate LimitingMessaging & Event-Driven
14
0
248 people solved
Jan 22, 2026
Sigmacomputing logo
Sigmacomputing
Medium
Software Engineer

Build a pivot table class over shirt sales records with running and grand totals

You are given shirt sales records as a list of Python dictionaries. Each record has a store ID, a date, a color, a size and the number of shirts sold:...

Software Engineering FundamentalsLow-Level Design (OOP)Arrays & Strings
1
0
25 people solved
Jul 29, 2026
Oracle logo
Oracle
Medium
Software EngineerSenior+ Locked

Remove Even-Positioned Nodes from a Linked List

Remove every even one-based position from a singly linked list in place while preserving the order of the remaining nodes. Handle empty, one-node, two...

Coding & Algorithms
7
0
62 people solved
Aug 21, 2026
Amazon logo
AmazonInfosysGoogle

Also asked at Google, Bloomberg, Geico, Apple, Microsoft, TikTok, Aqr

Medium
Software Engineer

Maximize Trading Profit with a One-Day Cooldown

Maximize Trading Profit with a One-Day Cooldown Given daily prices prices, return the maximum profit obtainable by buying and selling one share at a t...

Coding & AlgorithmsDynamic Programming
0
0
4 people solved
OpenAI logo
OpenAI
Medium
Software Engineer

Optimize C++ Performance with Provided Concurrency

Given a C++ codebase where threading components (threads, work queues, and synchronization primitives) are already provided, profile and optimize the ...

Coding & AlgorithmsProgramming LanguagesMemory Management
19
0
319 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Product Manager

Facebook Birthday Reminders: North-Star Metric, Funnel Metrics and Guardrails

You own birthday notifications at Facebook: the alerts that tell a person a friend's birthday is today and invite them to send a wish. Define how you ...

Analytics & ExperimentationMetrics & KPIs
1
0
13 people solved
Jul 27, 2026
Modular logo
Modular
Hard
Software Engineer

Find the Critical Path

You are given a project represented as a directed acyclic graph of tasks. Each task has: - a unique task name - a list of prerequisite task names - a ...

Coding & Algorithms
5
0
82 people solved
Apr 9, 2026
Capital One logo
Capital One
Medium
Product Manager

Bringing Virtual Card Numbers to Capital One Debit and Credit Customers Across Teams

You are a product manager at Capital One, asked to bring virtual card numbers to the bank's debit and credit card customers. Explain how you would wor...

Product Design & StrategyRequirements & Launch ExecutionConflict & Collaboration
4
0
31 people solved
Jun 21, 2025
Meta logo
Meta
Easy
Data Scientist

How to evaluate a similar-listing notifications feature

Question You are a Data Scientist on a US C2C marketplace app (like Facebook Marketplace) where users buy and sell second-hand products. Current produ...

Analytics & ExperimentationLaunch EvaluationMetrics & KPIs
132
1
1130 people solved
Jan 17, 2026
Meta logo
MetaAndurilAmazonGoogle

Also asked at Amazon, Google

Medium
Software Engineer

List Buildings That Clear Every Building to Their Right

Problem Buildings have heights heights, and the ocean lies to their right. A building sees the ocean exactly when every building to its right is stric...

Coding & AlgorithmsArrays & Strings
0
0
10 people solved
Coinbase logo
Coinbase
Medium
Software Engineer

Implement a versioned recipe management system

You are asked to implement an in-memory Recipe Management System (similar in difficulty to a simple banking/in-memory DB exercise). The system support...

Coding & AlgorithmsLow-Level Design (OOP)
29
0
343 people solved
Nov 23, 2025
Sierra logo
Sierra
Medium
Product Manager

AI Agent That Resolves Spotify Listener Support Issues End to End

Design an agentic AI system that runs customer support for Spotify. The agent should resolve users' issues and act on their behalf, not just answer qu...

Product Design & StrategyAI Product ManagementAI Agents
1
0
11 people solved
May 21, 2026
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