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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
ByteDance logo
ByteDance
Hard
Backend EngineerNew Grad Locked

Determine If One Binary Tree Is a Substructure of Another

This question evaluates practical tree traversal skills and the ability to implement structural matching between two binary trees. It tests recursive ...

Coding & Algorithms
2
1
36 people solved
Jun 15, 2026
Netflix logo
Netflix
Medium
Software Engineer Locked

Return the longest contiguous subarray with all distinct values

This question evaluates a candidate's understanding of array-processing algorithms, duplicate detection, and maintaining state to identify the longest...

Coding & AlgorithmsTwo Pointers & Sliding Window
18
0
333 people solved
Jan 22, 2026
LinkedIn logo
LinkedIn
Easy
Machine Learning Engineer Locked

Compute point-to-segment minimum distance

This question evaluates understanding of computational geometry and numerical robustness, testing the ability to compute Euclidean distances between a...

Coding & AlgorithmsMath & Number Theory
22
1
224 people solved
Feb 8, 2026
Paradromics logo
Paradromics
Medium
Software Engineer

Design real-time modules communication and overload handling

You are designing a real-time system running on a single machine with two modules (e.g., producer -> consumer) that must communicate with low latency....

System Design
4
0
59 people solved
Feb 6, 2026
Figma logo
Figma
Medium
Data Engineer

Validate an IPv4 address string

Given a string s, determine whether it is a valid IPv4 address. A valid IPv4 address: - Has exactly 4 parts separated by dots (.): x1.x2.x3.x4 - Each ...

Coding & AlgorithmsArrays & Strings
23
0
264 people solved
Jan 20, 2026
Garner Health logo
Garner Health
Medium
Software EngineerSenior+ Locked

Handle Conflict, Mentorship, and a Missed Deadline

Prepare three separate STAR stories about a substantive coworker disagreement, effective mentorship, and a missed deadline. Each answer should present...

Behavioral & Leadership
1
0
31 people solved
May 24, 2026
Rippling logo
Rippling
Medium
Software Engineer

Track article votes and last three flips

Problem Design an in-memory data structure for voting on articles. Users can vote on an article with either: - Thumbs up - Thumbs down - No vote (user...

Coding & AlgorithmsData Structure Design
47
0
386 people solved
Oct 17, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Populate next pointers in a perfect binary tree

You are given a perfect binary tree (all leaves at the same level; every internal node has two children). Each node has fields left, right, and next. ...

Coding & AlgorithmsTrees
10
0
115 people solved
Feb 7, 2026
Asana logo
Asana
Medium
Software Engineer

Compute Products Excluding Each Index

You are given an integer array nums of length n. Return an array answer such that answer[i] equals the product of every element of nums except nums[i]...

Coding & Algorithms
8
0
59 people solved
Apr 2, 2026
Microsoft logo
Microsoft
Medium
Product Manager

Improve Microsoft PowerPoint: Pick a User, Find the Biggest Gap and Design a Fix

You are interviewing for a product manager role at Microsoft. The interviewer asks about your experience with PowerPoint and how you would make it bet...

Product Design & StrategyProduct Design & Improvement
0
0
6 people solved
May 30, 2026
Oracle logo
Oracle
Medium
Software Engineer Locked

Solve Five Coding Problems

This problem set evaluates proficiency in core algorithms and data structures, including graph traversal and connected-component identification, array...

Coding & Algorithms
10
0
73 people solved
Apr 7, 2026
Intuit logo
Intuit
Medium
Data Scientist

Compute monthly new subscribers and YoY deltas

Write a single SQL query that returns monthly counts of new subscribers starting at 2019-06, plus year-over-year (same-month prior year) comparisons. ...

Data Manipulation (SQL/Python)
6
0
81 people solved
Oct 13, 2025
Tesla logo
Tesla
Medium
Software Engineer

Solve classic array, graph, and parsing problems

Implement and analyze solutions to the following independent tasks: 1) Expression evaluator: Given a string s of digits, '+', '-', '*', '/', and space...

Coding & AlgorithmsArrays & StringsParsing & Interpreters
19
0
150 people solved
Aug 14, 2025
Capital One logo
Capital One
Medium
Data Scientist

Calculate Longest Transaction Streak for Each User

transactions +---------------+---------+--------+----------------+-----------+----------+ | transaction_id| user_id | amount | transaction_date| merch...

Data Manipulation (SQL/Python)
4
0
54 people solved
Aug 4, 2025
Uber logo
Uber
Hard
Data Scientist

Design an Uber A/B experiment end-to-end

Experiment Design: Pickup ETA Card Redesign Context: After a rider requests a trip, the app shows a pickup ETA card. The hypothesis is that clearer ET...

Analytics & ExperimentationExperiment Design (A/B Testing)Hypothesis Testing
32
0
309 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Easy
Data ScientistSenior+ Locked

Query departments and top earners

This question evaluates proficiency in relational data manipulation, including multi-table joins, grouping and aggregation to identify departments wit...

Data Manipulation (SQL/Python)SQL
25
0
245 people solved
Apr 1, 2026
Uber logo
Uber
Medium
Data ScientistNew Grad Locked

Evaluate Promotions for Uber Eats Users

This question evaluates a data scientist's causal inference and experimentation competencies—including randomized trial design, treatment-effect estim...

Machine LearningExperiment Design (A/B Testing)
75
0
571 people solved
Apr 30, 2026
Glean logo
Glean
Easy
Data Scientist

What are sum expectation and variance?

Let random variables X and Y have finite means and variances. How do you compute: 1. The expectation of X + Y 2. The variance of X + Y Your answer sho...

Statistics & Math
8
0
85 people solved
Jan 11, 2026
Meta logo
Meta
Medium
Data Scientist

Resolve Conflicts and Convince Skeptical Stakeholders Effectively

Resolve Conflicts and Convince Skeptical Stakeholders Effectively Scenario You are an IC-level data scientist (IC5-or-below) working on fast-paced, cr...

Behavioral & LeadershipConflict & CollaborationLeadership & Influence
77
0
379 people solved
Aug 4, 2025
Instacart logo
Instacart
Medium
Software Engineer

Evaluate a Target Variable from Assignments with Plus, Minus, Cycles and Conflicts

You are given a list of assignment equations, each of which assigns a value to one variable, and the name of a target variable. Compute the value of t...

Software Engineering FundamentalsGraphsParsing & Interpreters
1
0
14 people solved
Oct 10, 2026
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