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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
Agoda logo
Agoda
Easy
Data EngineerSenior+ Locked

Find the Longest Calendar-Day Streak with All Employees Present

Identify dates when every employee is present and compute the longest consecutive streak, treating missing attendance as a gap.

Data Manipulation (SQL/Python)SQL
7
0
72 people solved
Sep 11, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Reason About Binary Search with One-Call-Delayed Feedback

Analyze binary search when each comparison response belongs to the previous guess rather than the current call. The exercise focuses on startup and fl...

Software Engineering Fundamentals
35
0
315 people solved
Aug 18, 2026
Amazon logo
AmazonTikTokGoogle

Also asked at Google, DoorDash, Microsoft, Meta, IBM

Medium
Software Engineer

Simulate a Nonpreemptive CPU with Deterministic Ties

Problem Task i has enqueue and processing times in tasks[i]. When idle, the CPU chooses an available task with the shortest processing time, breaking ...

Coding & AlgorithmsHeaps & Priority QueuesSimulation & State Machines
1
0
15 people solved
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Select the Nearest Eligible Elevator

Select the nearest elevator eligible for a passenger based on current floor, movement state, and requested direction. Specify same-floor behavior, idl...

Coding & AlgorithmsSimulation & State Machines
47
0
341 people solved
May 12, 2026
Instacart logo
Instacart
Easy
Software Engineer Locked

Debug Search and Stock Behavior in a Library Application

Debug a library application’s incomplete search and stock displays by reproducing symptoms, tracing API behavior, checking query semantics, and valida...

Software Engineering FundamentalsDebuggingAI-Assisted Development
12
1
75 people solved
Sep 18, 2026
Ramp logo
Ramp
Medium
Software Engineer Locked

Find a User's Airport at a Given Time from Flight Records

This Ramp software engineering question tests timeline reasoning from flight records to determine a user's airport at a given time. It is useful for p...

Software Engineering FundamentalsBinary Search
42
1
605 people solved
Jul 2, 2026
Elevenlabs logo
Elevenlabs
Medium
Product Manager

Team Workspace for Editing AI Transcripts and Dubbed Voice Tracks

You are a PM at ElevenLabs. Design a collaborative tool that lets a team transcribe audio and produce dubbed versions of it. `hint Follow the recordin...

Product Design & StrategyProduct SenseAI Product Management
3
0
28 people solved
May 20, 2026
Jump Trading logo
Jump Trading
Medium
Quantitative Researcher Locked

Maintain a Fixed-Window Rolling Mean in Constant Time

Implement rolling_means(values, window) for signed integer values, returning a double-precision mean for every complete consecutive window. Work throu...

Coding & Algorithms
4
0
81 people solved
Aug 8, 2026
Oracle logo
Oracle
Medium
Software Engineer

Decide Whether a Parenthesis String With Star Wildcards Can Be Balanced

Given a string made only of the characters (, ) and `, decide whether it can be turned into a balanced parenthesis string by replacing every , indepen...

Coding & AlgorithmsGreedy
3
0
34 people solved
Sep 9, 2026
Spacex logo
Spacex
Medium
Machine Learning EngineerSenior+ Locked

Diagnose a Production Classifier and Defend Its Systems Design

A production machine-learning troubleshooting and system-design interview focused on diagnosing a classifier whose offline and online behavior do not ...

Machine Learning
13
0
110 people solved
Jul 25, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer Locked

Design a High-Demand Event Ticket Marketplace

Design a ticket marketplace that handles search, expiring holds, payment uncertainty, and extreme onsale spikes without overselling inventory. Reason ...

System DesignSystem Design FundamentalsDistributed Transactions & Idempotency
23
0
250 people solved
Jul 8, 2026
Pinterest logo
Pinterest
Medium
Software Engineer

Fewest Buses to Ride Between Two Stops on Looping Bus Lines

A city runs several bus lines. Each line drives a fixed loop of stops and repeats it forever, so a rider who boards a line can stay on from any of its...

Coding & AlgorithmsGraphs
5
0
45 people solved
Jul 13, 2026
Jane Street logo
Jane Street
Medium
Machine Learning Engineer

Connect-N on an Infinite Board with Gravity

You are asked to implement a variant of the classic Connect Four game, played on an unbounded board. Game Rules - The board consists of vertical colum...

Coding & Algorithms
50
0
445 people solved
Dec 26, 2025
DoorDash logo
DoorDash
Hard
Software Engineer Locked

Design a Multi-Service Workflow Engine

Design a locally runnable workflow engine made of collaborating services, with durable state, retries, idempotency, and failure recovery.

System Design
20
0
143 people solved
Sep 1, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, UiPath, CleverTap

Medium
Software Engineer

Decide Whether Letter-Variable Equalities and Inequalities Are Consistent

Problem Each four-character equation has the form x==y or x!=y, with lowercase single-letter variables that may be the same letter. Return whether int...

Coding & AlgorithmsGraphs
1
0
11 people solved
Lead Bank logo
Lead Bank
Medium
Software Engineer Locked

Process Calendar Events with Deletion, Pagination, and Overlap Queries

Practice implementing an in-memory calendar that supports inserts, deletions, stable ordering, zero-based pagination, and half-open interval overlap q...

Coding & Algorithms
4
0
55 people solved
Jul 8, 2026
Google logo
GoogleMicrosoftAmazon

Also asked at Amazon, Meta, Bloomberg

Easy
Software Engineer

Find the Largest Customer Account Total

Problem In matrix accounts, a row contains one customer’s balances across the banks. Add each customer’s balances and return the largest of those tota...

Coding & AlgorithmsGrids & Matrices
0
0
12 people solved
Upstart logo
Upstart
Medium
Software Engineer

Solve Five OA Coding Tasks

This is an online-assessment screen consisting of five independent coding tasks. Each task is self-contained — there is no shared state between them —...

Coding & AlgorithmsArrays & StringsMath & Number Theory
24
0
451 people solved
Apr 10, 2026
Amazon logo
Amazon
Medium
Software Engineer

Maximize weighted subsequence pairs with wildcards

You are given a string s of length n consisting only of characters '0', '1', and '!'. Each '!' can be replaced by either '0' or '1'. For the final bin...

Coding & AlgorithmsDynamic Programming
135
0
1209 people solved
Jan 27, 2026
NVIDIA logo
NVIDIA
Hard
Software EngineerSenior+ Locked

Determine Whether One Point Can Reach Another

Determine whether a target point with positive integer coordinates can be reached from a starting point using two coordinate-addition moves. Account f...

Coding & Algorithms
15
0
170 people solved
Jul 16, 2026
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