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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
PhonePe logo
PhonePe
Medium
Product Manager

Launch strategy for a new Google programming language: target developers and adoption

Google wants to bring a new programming language to market. As the product manager, how should Google approach it? `hint Start from the switching cost...

Product Design & StrategyProduct StrategyPlatform & API Products
0
0
6 people solved
Jan 7, 2026
Amazon logo
Amazon
Hard
Software Engineer

Minimize operations to reduce price difference

You are managing an inventory of products and want to adjust their prices. There are n products. The price of the i-th product is given by an integer ...

Coding & Algorithms
12
0
100 people solved
Oct 1, 2025
Apple logo
Apple
Easy
Software Engineer Locked

Implement flood fill using BFS and DFS

This question evaluates proficiency in graph traversal and matrix manipulation, specifically the implementation of BFS and DFS variants for flood fill...

Coding & AlgorithmsGrids & Matrices
20
1
239 people solved
Jan 22, 2026
Google logo
Google
Medium
Product Manager

Walking Through API Design as a PM: Consumers, Resources, Contracts and Versioning

In a product manager interview you are asked how you would design an API. Walk through the approach you would take and the main decisions you would ma...

Software Engineering FundamentalsPlatform & API ProductsAPI Design
2
0
17 people solved
Feb 24, 2025
Riotgames logo
Riotgames
Easy
Software Engineer Locked

Describe a Difficult Project

Describe a recently completed difficult project, including the obstacle, decisions, and outcome.

Behavioral & Leadership
1
0
20 people solved
Aug 26, 2026
Intersystems logo
Intersystems
Medium
Software Engineer Locked

Predict output when iterating ordered keys

This question evaluates understanding of ordered maps, iteration semantics, reverse traversal and accumulation of values in code. It is commonly asked...

Coding & Algorithms
9
0
71 people solved
Feb 12, 2026
DocuSign logo
DocuSign
Easy
Software Engineer Locked

Compress Consecutive Integer Ranges

Practice sorting and compressing integers into a canonical comma-separated representation of maximal consecutive ranges.

Coding & Algorithms
4
0
46 people solved
Aug 27, 2026
Amazon logo
Amazon
Hard
Applied Scientist Locked

Design systems for global request detection and labeling

This question evaluates the ability to design scalable, low-latency ML systems for global streaming event detection and rapid labeling under extreme c...

ML System Design
10
0
86 people solved
Feb 9, 2026
Meta logo
Meta
Medium
Data Scientist

Detect earliest collision among moving cars

You are given n vehicles with kinematics parameters. A “collision” means two vehicles occupy the same position at the same time. Assume continuous tim...

Coding & Algorithms
7
0
54 people solved
Dec 4, 2025
TikTok logo
TikTok
Medium
Product Manager

TikTok DAU decline: validate, decompose and find the root cause

You are a product manager at TikTok and notice that daily active users (DAU) have fallen. How would you work out why? `hint Decompose the metric DAU o...

Analytics & ExperimentationMetric DiagnosticsSegmentation & Cohort Analysis
1
0
8 people solved
Aug 12, 2025
Uber logo
Uber
Hard
Data Scientist

Measure rider incentive causal ROI

Rider Incentive Targeting: Causal Incrementality, ROI, and Spillovers Context: You plan a rider‑side incentive (e.g., “20% off up to $10”) targeted by...

Statistics & MathCausal InferenceBusiness Case Analysis
7
0
119 people solved
Oct 13, 2025
Intuit logo
Intuit
Medium
Product Manager

Small-business launch plan: an independent pet food shop in Evanston

Imagine you want to open a store that sells pet food in Evanston. Walk through the steps you would take, in the order you would take them, from the fi...

Product Design & StrategyUser Research & DiscoveryBusiness Case Analysis
0
0
7 people solved
Feb 22, 2026
Whatnot logo
Whatnot
Medium
Data Scientist Locked

Measure a Discovery Boost in a Two-Sided Marketplace

Design a measurement plan for a discovery change in a two-sided marketplace. The interview question evaluates metric selection, experiment design, int...

Analytics & Experimentation
2
0
33 people solved
May 23, 2026
Expedia logo
Expedia
Hard
Software Engineer

Describe when you distrusted a colleague

Tell me about a time when you did not fully trust a colleague. What caused the concern, how did you validate your assumptions, how did you handle the ...

Behavioral & Leadership
10
0
88 people solved
Jan 6, 2026
C3 AI logo
C3 AI
Hard
Data Scientist Locked

Keep Gradient Descent from Stalling at Poor Solutions

Diagnose gradient descent that appears stuck. Separate local minima, saddles, plateaus, poor conditioning, learning-rate problems, and code defects, t...

Machine Learning
2
0
32 people solved
Aug 21, 2026
Wise logo
Wise
Medium
Product Manager

Behavioral: handling friction with a sales team as a product manager

Describe a time when working with a sales team was hard for you as a product manager. What was the challenge, what did you do about it, and how did it...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
0
0
6 people solved
Feb 10, 2025
Medium
Software Engineer

Reverse a Singly Linked List In Place

Reverse a singly linked list and return its new head. Constraints and Clarifications For the standard practice contract, the list is finite and acycli...

Coding & AlgorithmsLinked Lists
0
0
7 people solved
Jan 14, 2026
Meta logo
Meta
Medium
Product Manager

Meta product design: an exercise product for blind and low-vision users

You are a product manager at Meta. Design a product that helps people who are blind or have low vision get and stay physically fit. Decide who it serv...

Product Design & StrategyAccessibility & Inclusive DesignProduct Sense
1
0
9 people solved
Jun 27, 2026
Fortinet logo
Fortinet
Medium
Software Engineer Locked

Solve linked list reversal and minima problems

This set of problems evaluates proficiency in fundamental data structures and algorithms, specifically linked list manipulation (reversal and linear-t...

Coding & Algorithms
7
0
64 people solved
Jan 6, 2026
IBM logo
IBM
Easy
Data ScientistIntern

How do you detect and fix multicollinearity?

In a regression-style model (e.g., linear regression or logistic regression) you suspect multicollinearity among features. 1) What is multicollinearit...

Statistics & Math
6
0
93 people solved
Nov 9, 2025
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