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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
Pinterest logo
Pinterest
Hard
Machine Learning Engineer

Insert parentheses to minimize expression value

You are given a string expression of the form A+B, where A and B are non-empty strings of digits (no digit is '0'). You must insert exactly one pair o...

Coding & AlgorithmsArrays & StringsMath & Number Theory
12
1
223 people solved
Feb 9, 2026
Databricks logo
Databricks
Hard
Software Engineer

Find shortest path in a Fibonacci-ordered tree

You are given a recursively-defined binary tree T(order) whose shape depends only on order (not on node values). Nodes are labeled 0..N-1 using preord...

Coding & AlgorithmsTrees
47
0
349 people solved
Nov 6, 2025
OpenAI logo
OpenAI
Hard
Software Engineer

Model particle hits on a screen

A point source at (0, 0) emits particles toward an infinite vertical screen located at x = 1. For each particle, sample an angle theta uniformly from ...

Software Engineering FundamentalsProbability
58
0
511 people solved
Feb 22, 2026
Infosys logo
Infosys
Hard
Software Engineer

Count Updates That Admit a Proper Subsequence with a Target GCD

Count Updates That Admit a Proper Subsequence with a Target GCD You are given an integer array nums of length n, a positive integer p, and an ordered ...

Coding & AlgorithmsMath & Number TheoryTrees
0
0
10 people solved
Amazon logo
AmazonLTIMindtree
Medium
Software Engineer

Cover the Most White Integer Tiles with One Carpet

Problem Each inclusive interval in tiles colors its integer positions white, and the intervals do not overlap. Place one carpet covering carpetLen con...

Coding & AlgorithmsIntervals & SchedulingTwo Pointers & Sliding Window
0
0
8 people solved
Meta logo
Meta
Medium
Data Engineer

Solve SQL and Python coding tasks

You are given a small library system with the following relational schema and several Python data-processing tasks. Answer the SQL questions and imple...

Coding & AlgorithmsSQLDynamic Programming
82
6
554 people solved
Nov 20, 2025
Capital One logo
Capital One
Medium
Data Scientist

Should Company Launch Vegan Burger Based on Profit Analysis?

Case: Launching a Vegan Burger — Unit Economics and Go/No-Go You are a data scientist supporting a product team that is deciding whether to launch a v...

Analytics & ExperimentationBusiness Case Analysis
155
0
867 people solved
Jul 12, 2025
Waymo logo
Waymo
Easy
Data Scientist Locked

Use Bayes to interpret a broken radar alarm

This question evaluates Bayesian probabilistic reasoning, understanding of base rates, sensitivity/specificity, decision-theoretic trade-offs between ...

Analytics & ExperimentationProbabilityHypothesis Testing
26
0
347 people solved
Jan 17, 2026
Oracle logo
Oracle
Medium
Backend EngineerSenior+ Locked

Design a Distributed Rate Limiter

Design a distributed per-tenant rate limiter that supports bursts, policy changes, and multiple regions while comparing common algorithms and defining...

System Design
5
0
43 people solved
Aug 10, 2026
Microsoft logo
Microsoft
Medium
Product Manager

YouTube's Next Decade: Choosing Growth Levers Across Viewers, Creators and Revenue

Looking ten years ahead, how should YouTube keep growing? Describe the growth model you would choose for it and explain why. `hint Split growth into f...

Product Design & StrategyGrowth & MonetizationProduct Strategy
1
0
7 people solved
Sep 25, 2026
Microsoft logo
Microsoft
Medium
Software EngineerIntern

Minutes Until Rot Spreads to Every Fresh Cell in a Grid

A rectangular grid shows the cells of a crate of fruit. Each cell is empty, holds a fresh piece of fruit, or holds a rotten piece. Rot spreads once pe...

Coding & AlgorithmsGrids & Matrices
1
0
9 people solved
Aug 11, 2026
Workday logo
Workday
Medium
Software EngineerSenior+ Locked

Build a Fuzzy Keyword Index

This question evaluates string-processing, text-indexing, approximate string-matching, and data-structure design skills for supporting many repeated q...

Coding & Algorithms
3
0
70 people solved
Apr 1, 2026
OpenAI logo
OpenAI
Easy
Software Engineer

Design a Payment System

Design a Payment System Design the backend payment system for an online platform that charges customers for goods and services (for example, a marketp...

System Design
9
0
123 people solved
Mar 16, 2026
Agoda logo
Agoda
Medium
Product Manager

Advise Agoda's CEO on Adding Spa Treatment Booking: Strategy and Pilot Plan

You are a product manager at Agoda, the online travel booking platform. The CEO is weighing whether to let customers book spa treatments through Agoda...

Product Design & StrategyProduct StrategyGrowth & Monetization
1
0
10 people solved
Aug 5, 2026
Meta logo
Meta
Hard
Data Engineer

Evaluate impact of short videos in feed

Scenario You work on a social app’s main News Feed. The team wants to introduce a short-form video module ("Reels") into the feed. Prompt 1. How would...

System DesignExperiment Design (A/B Testing)Launch Evaluation
23
1
211 people solved
Dec 1, 2025
OpenAI logo
OpenAI
Medium
Software Engineer

Implement an Extensible Chatbot App

Implement a ChatApp class that processes user messages and routes them to bot responders. The system must support multiple bot types, and the design m...

Software Engineering FundamentalsLow-Level Design (OOP)
27
0
423 people solved
Apr 26, 2026
Netflix logo
Netflix
Medium
Software Engineer Locked

Solve sliding-window and disjoint-string-pairs tasks

This question evaluates proficiency in string-processing algorithms, sliding-window techniques, efficient set or bitmask representations, and combinat...

Coding & AlgorithmsTwo Pointers & Sliding WindowBit Manipulation
34
0
324 people solved
Mar 1, 2026
Luma AI logo
Luma AI
Medium
Software Engineer

Explain Your Motivation and How You Use AI Development Tools in Your Workflow

A recruiter screen for a software engineering role on an AI product team covers four topics. Prepare an answer to each as you would give it in the cal...

Behavioral & LeadershipMotivation & FitAI-Assisted Development
1
0
19 people solved
Sep 17, 2026
Amazon logo
AmazonMicrosoftMeta
Medium
Software Engineer

Winner Under a Divisible-by-Three Losing Rule

Problem Alice and Bob alternately remove any one stone, with Alice moving first. The player who makes the total value of all removed stones divisible ...

Coding & AlgorithmsMath & Number TheorySimulation & State Machines
0
0
7 people solved
Waymo logo
Waymo
Medium
Software Engineer Locked

Find the Best Meeting Point on a Grid

Find an empty grid cell reachable from every building that minimizes the total shortest-path distance. Buildings and obstacles cannot be crossed, the ...

Coding & Algorithms
10
0
79 people solved
May 13, 2026
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