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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
DoorDash logo
DoorDash
Medium
Software Engineer

Design a Food Item Review and Customer Reward System for a Delivery App

Design a system for a food delivery app in which customers review the food items they ordered and are rewarded for doing so. This is the system design...

System DesignSystem Design FundamentalsDistributed Transactions & Idempotency
2
0
29 people solved
May 14, 2026
Anduril logo
AndurilGoogleMeta

Also asked at Meta, Bloomberg, Microsoft, Amazon

Medium
Software Engineer

Resolve Simultaneous Left and Right Domino Pushes

Problem dominoes contains L and R for initial left/right pushes and . for upright dominoes. Every second, a falling domino pushes its upright neighbor...

Coding & AlgorithmsSimulation & State MachinesTwo Pointers & Sliding Window
1
0
12 people solved
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Microsoft, EPAM Systems, Pornhub

Medium
Software Engineer

Count All Three Salary Categories Including Empty Ones

Problem Return category and accounts_count for all three source categories: Low Salary for income < 20000, Average Salary for 20000 through 50000 incl...

Data Manipulation (SQL/Python)SQL
2
0
15 people solved
Meta logo
Meta
Medium
Machine Learning Engineer

Solve Two String Problems

The interview included two coding questions: 1. Exactly one edit apart Given two strings s and t, determine whether they are exactly one edit apart...

Coding & Algorithms
8
0
101 people solved
Apr 12, 2026
Google logo
Google
Easy
Software Engineer Locked

Count Rectangle Coverage on a Grid

Apply many inclusive rectangular increments to a square grid and return the final coverage count for every cell. The exercise emphasizes upper-bound e...

Coding & AlgorithmsGrids & Matrices
73
3
596 people solved
Jul 21, 2026
Google logo
GoogleMicrosoft
Medium
Software Engineer

Check JavaScript Prototype Ancestry

Check JavaScript Prototype Ancestry Implement checkIfInstanceOf(obj, classFunction), returning a Boolean that reports whether a value has a specified ...

Coding & AlgorithmsJavaScript & TypeScript
0
0
10 people solved
Waymo logo
Waymo
Medium
Data Scientist

Implement a Safe Average Function in Python

Write a Python function average(table) that returns the arithmetic mean of a list of numbers and returns 0 when the list is empty. Explain the functio...

Data Manipulation (SQL/Python)
18
0
174 people solved
Mar 14, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, Netflix

Medium
Software Engineer

Measure a Shared Contiguous Array Block

Problem Return the greatest length of a contiguous block occurring in both nums 1 and nums 2. A subsequence with gaps does not qualify. `cpp class Sol...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
14 people solved
eBay logo
eBay
Medium
Software Engineer Locked

Return the K Smallest Values from Sorted Arrays

Return the requested number of smallest values across multiple sorted arrays while preserving duplicates. The question evaluates frontier-based mergin...

Coding & Algorithms
5
0
52 people solved
Jul 26, 2026
Google logo
GoogleAmazon
Easy
Software Engineer

Divisibility by Combined Digit Values

Divisibility by Combined Digit Values Given a positive integer n, let S be the sum of its decimal digits and P be the product of those digits. Return ...

Coding & AlgorithmsMath & Number Theory
0
0
10 people solved
Microsoft logo
Microsoft
Medium
Applied ScientistSenior+

Fewest Distinct Values to Delete So at Least Half the Array Is Removed

Given an integer array arr of length n, pick a set of distinct values and delete every occurrence of each picked value from the array. A set is enough...

Coding & AlgorithmsGreedyArrays & Strings
1
0
15 people solved
Aug 27, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Microsoft, Flipkart, Sprinklr

Hard
Software Engineer

Maximum Cherries Collected by Two Descending Robots

Problem Two robots start at(0,0) and(0,cols-1) of grid. Each step moves to the next row, changing its column by -1,0,or 1 while remaining inside the g...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
0
0
7 people solved
Sierra logo
Sierra
Medium
Product Manager

Demonstrating Hands-On AI Fluency in Your Everyday Product Management Work

The interviewer opens with a broad question: how do you use AI? Answer from your own experience as a product manager. `hint Show a few workflows in de...

Behavioral & LeadershipAI Product Management
1
0
17 people solved
May 18, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Design a Scalable Job Scheduler

Design an internal job scheduling platform for a large company. The platform lets internal services and engineers submit jobs that run at a specified ...

System DesignJob Scheduling & WorkflowsDistributed Coordination
68
1
513 people solved
Apr 8, 2026
Salesforce logo
SalesforceExpediaNVIDIA

Also asked at NVIDIA, Amazon, Bill.com

Medium
Software Engineer

Reduce Piles with Repeated Half Removals

Problem Perform exactly k operations on the stone piles. In each operation, choose any pile and remove floor(pileSize/2) stones from its current conte...

Coding & AlgorithmsHeaps & Priority QueuesGreedy
1
0
10 people solved
Patreon logo
Patreon
Easy
Data Engineer

Design a Data Processing System for JSON User Records: Batch vs Streaming Input

Your team receives user records as JSON. Each record holds personal data such as a name, a mailing address and one or more payment methods. The round ...

System DesignETL & Data PipelinesBatch & Stream Processing
7
0
53 people solved
Mar 14, 2026
Geico logo
Geico
Medium
Software Engineer

Design a Real-Time EV Charging Station Reservation System for a City

Design a reservation system for the electric-vehicle charging stations of a city. Drivers see which chargers are available and reserve one in real tim...

System DesignSystem Design FundamentalsReal-Time Systems
0
0
3 people solved
Sep 20, 2026
Yelp logo
Yelp
Easy
Data Scientist Locked

Estimate Experiment Duration with Power Analysis

Estimate A/B test sample size and duration for a binary metric. Connect alpha, power, baseline rate, and minimum detectable effect to traffic, trigger...

Analytics & Experimentation
2
0
24 people solved
Aug 27, 2026
Google logo
GoogleMetaAmazonBloomberg

Also asked at Amazon, Bloomberg

Easy
Software Engineer

Sum Binary-Search-Tree Values inside an Inclusive Interval

Problem Given a binary-search-tree root and bounds low and high, return the sum of every node value in the inclusive interval [low,high]. `cpp class S...

Coding & AlgorithmsTrees
1
0
12 people solved
Rubrik logo
Rubrik
Hard
Software Engineer

Find largest connected group of overlapping intervals

You are given n people, where person i works during an inclusive time interval [start_i, end_i]. Define a communication graph: - Each person is a node...

Coding & AlgorithmsIntervals & SchedulingGraphs
13
0
178 people solved
Feb 12, 2026
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