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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
Machine Learning EngineerSenior+ Locked

Infer user intent from typing in real time

This question evaluates machine learning system design competency in streaming, low-latency intent inference from typing and UI context, covering priv...

ML System Design
5
0
89 people solved
Jan 6, 2026
Scale AI logo
Scale AI
Medium
Software Engineer

Find LCA in a N-ary tree via DFS

You are given the root of a rooted N-ary tree (each node can have zero or more children) and two distinct nodes p and q that belong to the tree. Desig...

Coding & AlgorithmsTreesBacktracking & Recursion
25
0
209 people solved
Dec 8, 2025
Two Sigma logo
Two Sigma
Medium
Software Engineer

Maximize Capital by Completing at Most k Projects

A startup has an initial amount of capital w and is choosing which projects to take on before an important funding deadline. There are n candidate pro...

Coding & Algorithms
23
0
154 people solved
Aug 26, 2025
Digitalocean logo
Digitalocean
Medium
Software Engineer Locked

Clarify a Longest-Repeating-Character Replacement Problem

Clarify replacement and substring semantics, then analyze the conditional sliding-window criterion based on window size and maximum character frequenc...

Software Engineering FundamentalsTwo Pointers & Sliding Window
2
0
24 people solved
Sep 16, 2026
Expedia logo
Expedia
Medium
Software Engineer

Count vowel-only substrings with all vowels

Count vowel-only substrings with all vowels Given a lowercase English string s, return the number of contiguous substrings that ( 1) consist only of v...

Coding & AlgorithmsTwo Pointers & Sliding Window
18
0
149 people solved
Aug 9, 2025
Capital One logo
Capital One
Medium
Data Scientist

Determine Revenue and Cost Components for Credit-Card Issuer

Determine Revenue and Cost Components for Credit-Card Issuer Credit-Card Issuer Unit Economics and Break-even Analysis Scenario A card issuer is consi...

Analytics & Experimentation
6
0
57 people solved
Aug 4, 2025
Amazon logo
Amazon
Medium
Product Manager

Customer Obsession Story: Extra Effort That Changed a Customer's Outcome

Describe a time you did substantially more for a customer than your role or the agreed plan called for. What did you do, why was the extra effort wort...

Behavioral & LeadershipOwnership & Execution
3
0
35 people solved
Jun 27, 2024
Amazon logo
Amazon
Medium
Software Engineer

Demonstrate Leadership Principles in Projects

Demonstrate Leadership Principles in Projects This Amazon Software Engineer behavioral/technical screen asks you to demonstrate the Amazon Leadership ...

Behavioral & LeadershipLeadership & InfluenceOwnership & Execution
17
0
158 people solved
Jul 15, 2025
Google logo
Google
Medium
Product Manager

Google Docs AI Roadmap: What to Build First So Remote Teams Get More Done

You are a product manager on Google Docs, the collaborative document editor in Google Workspace. Remote teams, whose members often work from different...

Product Design & StrategyAI Product ManagementMetrics & KPIs
1
0
9 people solved
Sep 17, 2026
Stripe logo
Stripe
Medium
Product Manager

Product Sense: Building a Credit Card Program From Approval to Repayment

Design a credit card system. Approach it as a product problem: decide whose needs the design serves, which users you target and what problems they hav...

Product Design & StrategyProduct SenseGrowth & Monetization
1
0
10 people solved
Feb 4, 2026
Amazon logo
Amazon
Hard
Data Scientist

Design an end-to-end spam detection system

Design an End-to-End Email Spam Detection System You are asked to design a production-grade email spam detection system that meets the following const...

Machine LearningML System DesignAnnotation & Label Quality
21
0
184 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

Find Top-3 Salaries Per Department Using SQL

employees +----+---------+--------+---------+ | id | name | salary | dept_id | +----+---------+--------+---------+ | 1 | Alice | 120000 | 10 ...

Data Manipulation (SQL/Python)
8
0
55 people solved
Aug 4, 2025
Applied Intuition logo
Applied Intuition
Medium
Software Engineer Locked

Design a simulator to replay left-turn videos

This question evaluates system design competency for building an end-to-end video replay and simulation service, including data modeling, event indexi...

System Design
10
0
80 people solved
Feb 11, 2026
Capital One logo
Capital One
Medium
Data Scientist

How would you choose between shows?

You are a data scientist at a streaming company similar to Netflix or Hulu. Leadership wants a recommendation on whether to renew an existing series o...

Analytics & ExperimentationBusiness Case AnalysisCausal Inference
23
0
158 people solved
Jan 9, 2026
Truefoundry logo
Truefoundry
Medium
Software Engineer Locked

Verify Ordering Under a Scrambled Alphabet

Given a sequence of words and an alphabet string that lists every allowed character from smallest to largest, determine whether the words are sorted i...

Coding & Algorithms
2
0
37 people solved
Aug 1, 2026
Uber logo
Uber
Medium
Software EngineerNew Grad Locked

Determine Whether Queries Can Zero Array

This question evaluates competency in array manipulation, range updates, and feasibility under constraints, focusing on reasoning about sequential int...

Coding & Algorithms
4
0
73 people solved
Apr 17, 2026
Meta logo
Meta
Medium
Data Engineer

Demonstrate ownership and conflict resolution

Demonstrate ownership and conflict resolution Behavioral: 0→1 Data Initiative, Prioritization, and Cross-Functional Leadership Context: Onsite intervi...

Behavioral & Leadership
10
0
78 people solved
Jul 15, 2025
Capital One logo
Capital One
Easy
Data Scientist

Calculate Incremental Customers for Marketing Spend Justification

Incremental Customers Needed for Marketing Spend You previously computed the per-customer annual profit for a new cardholder, excluding partnership ma...

Statistics & MathBusiness Case Analysis
61
1
112 people solved
Jul 12, 2025
Google logo
Google
Medium
Product Manager

Defining DoorDash's North Star and Marketplace Health Metrics

Imagine you are a product manager at DoorDash. Which metrics would you treat as the most important for the company, and how would you organize them? `...

Analytics & ExperimentationMetrics & KPIs
0
0
9 people solved
Aug 6, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist

Implement stream random sampling in Python

You are given an unbounded stream of items that cannot be stored entirely in memory. Write Python code to maintain a uniform random sample from the st...

Coding & AlgorithmsSampling & Estimation
13
0
114 people solved
Oct 12, 2025
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