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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
Amazon logo
Amazon
Medium
Software Engineer

Place items into earliest fitting bins

Place items into earliest fitting bins You are given k items with sizes items[0..k-1] and n bins with initial capacities caps[0..n-1]. Process items i...

Coding & Algorithms
6
1
65 people solved
Aug 10, 2025
PayPal logo
PayPal
Medium
Software Engineer

Explain Java volatile semantics

Explain Java volatile semantics What does the volatile keyword guarantee in Java's memory model? Describe visibility, ordering (happens-before), and r...

Coding & Algorithms
5
0
73 people solved
Aug 7, 2025
Snapchat logo
Snapchat
Hard
Software Engineer Locked

Implement a dictionary without built-in Dictionary

This question evaluates understanding of hash tables and low-level data-structure implementation, including hashing, collision resolution, resizing/re...

Coding & Algorithms
11
0
80 people solved
Jan 2, 2026
Instacart logo
Instacart
Medium
Software Engineer

Parse password from indexed matrix file

Question Given a filepath to a text file containing one index line [x, y] followed by a matrix of characters (origin at lower-left (0, 0)), return the...

Coding & Algorithms
37
0
124 people solved
Jul 29, 2025
Revolut logo
Revolut
Medium
Product Manager

Traffic-signal estimate: green time for 100 cars on a one-lane road

An interviewer gives you an estimation problem. A traffic light controls a road that has a single lane. Estimate how long the light needs to stay gree...

Product / Decision MakingEstimation & Market Sizing
0
0
13 people solved
Sep 25, 2025
Thumbtack logo
Thumbtack
Hard
Data Scientist

Design a robust pro-ranking A/B test

Experiment Design: Evaluating a New Pro Ranking Algorithm (Ranker) in a Two‑Sided Marketplace You are designing an experiment to evaluate a new pro ra...

Analytics & Experimentation
9
0
82 people solved
Oct 13, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Clean and Aggregate Transactions for Finance Dashboard

transactions id | user_id | amount | timestamp | category 1 | 1001 | 19.99 | 2023-01-01 09:00:00 | grocery 2 | 1001 | 5.50 | 2023...

Data Manipulation (SQL/Python)
82
0
53 people solved
Jul 12, 2025
Agoda logo
Agoda
Medium
Product Manager

Leading a Project in an Unfamiliar Domain as a Product Manager

How do you handle a project that falls outside your area of expertise? Answer with a specific project from your own work. `hint Make the learning visi...

Behavioral & LeadershipAmbiguity & Decision MakingSelf-Awareness & Growth
1
0
10 people solved
Feb 11, 2025
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Explain CAP, indexing, locks, and logs

This question evaluates knowledge of distributed systems concepts (CAP theorem), database internals (index types and logging), and concurrency control...

Software Engineering Fundamentals
7
0
54 people solved
Jan 2, 2026
LinkedIn logo
LinkedIn
Hard
Data Scientist Locked

Measure Relevant Feed Success

This question evaluates a data scientist's competency in product analytics and experimentation, specifically metric definition, A/B test design, inter...

Analytics & Experimentation
7
0
56 people solved
Jan 19, 2026
Shopify logo
Shopify
Medium
Data Scientist

Describe Your Professional Growth and Key Learning Experiences

Describe Your Professional Growth and Key Learning Experiences Behavioral Interview — Life Story: Growth and Readiness Scenario A 60-minute “life stor...

Behavioral & Leadership
9
0
96 people solved
Aug 4, 2025
Shopify logo
Shopify
Medium
Data Scientist

Analyze Pirate Theme Usage Growth Over Time

themes +----+--------------+-----------+ | id | name | is_pirate | +----+--------------+-----------+ | 1 | Pirate Red | true | | 2 | ...

Data Manipulation (SQL/Python)
7
0
51 people solved
Aug 4, 2025
Capital One logo
Capital One
Medium
Data Scientist

Describe Your Impactful Accomplishment and Learned Lessons

Describe Your Impactful Accomplishment and Learned Lessons Behavioral Interview Prompts (Capital One — Data Scientist) Context You are interviewing fo...

Behavioral & Leadership
8
0
104 people solved
Aug 4, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Check inorder subsequence and edit tree minimally

Given a binary tree whose nodes store integers and an array target, determine whether target is a subsequence of the tree's inorder traversal (element...

Coding & AlgorithmsTreesDynamic Programming
28
1
258 people solved
Sep 6, 2025
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Defend an Ownership Project with Measurable Impact

Defend one project where you recognized an important problem and drove a response with measurable impact. Interviewers probe the evidence behind your ...

Behavioral & LeadershipProject Deep DiveOwnership & Execution
4
0
56 people solved
Aug 4, 2026
Flipkart logo
Flipkart
Medium
Product Manager

Why You Are Leaving Your Current Role: Framing a Career Move in a PM Interview

In a product manager interview at Flipkart, the interviewer asks what is prompting you to make a change: why you want to leave your current role and w...

Behavioral & LeadershipMotivation & Fit
0
0
8 people solved
May 26, 2026
Meta logo
Meta
Medium
Software Engineer

Extend cloud file system with copy and compression

In-Memory Cloud File System V2: Copy, Capacity Updates, Compress/Decompress Design an in-memory file system with per-user quotas and additional operat...

Coding & AlgorithmsLow-Level Design (OOP)Heaps & Priority Queues
12
0
92 people solved
Feb 11, 2026
Google logo
Google
Medium
Product Manager

How Long Do Travelers Wait in an Airport? Size It and Pitch a 10x Fix

Estimate how much time a passenger spends waiting at an airport. Then come up with a moonshot: an ambitious idea that would cut that waiting time dram...

Product / Decision MakingEstimation & Market SizingOperations & Capacity
1
0
9 people solved
Feb 11, 2026
Google logo
Google
Hard
Software EngineerNew Grad Locked

Find numbers with exactly two sum-of-squares forms

This question evaluates understanding of integer representations as sums of two squares and the ability to reason about counting distinct unordered re...

Coding & AlgorithmsMath & Number Theory
17
0
119 people solved
Oct 14, 2025
Meta logo
Meta
Medium
Data Engineer

Compute reservation diff for largest member

Given copies(copy_id, reserved_by_member_id) and members(member_id, referred_by_member_id), find the member with the largest member_id. Return a singl...

Data Manipulation (SQL/Python)
2
0
33 people solved
Sep 6, 2025
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