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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
Aqr logo
Aqr
Medium
Data Scientist

Autopilot for a Flappy Bird-Style Game Across Maps with Varying Pipe Gaps

Build an autopilot for a Flappy Bird-style game. The bird flies to the right at a constant speed while gravity pulls it down, and a flap gives it a fi...

Software Engineering FundamentalsSimulation & State Machines
14
0
103 people solved
Oct 17, 2026
Microsoft logo
Microsoft
Easy
Software Engineer

Design a Lab Machine Fleet Monitor: Payload Dispatch, Hang Detection, and Remote Reboot

Design a system that lets users monitor a collection of lab machines that run compute loads. - Machines periodically ask the system for work. A work i...

System DesignSystem Design FundamentalsFault Tolerance & Failover
11
0
178 people solved
Sep 30, 2026
Meta logo
MetaGoogleMicrosoft

Also asked at Microsoft, Amazon, Bloomberg, Swiggy, Clari, TikTok

Medium
Software Engineer

Count BST Shapes with Exact Catalan Arithmetic

Problem Return the number of structurally different binary search trees containing exactly the distinct keys 1 through n. Each key appears once, and a...

Coding & AlgorithmsDynamic ProgrammingTrees
3
0
46 people solved
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Quantitative Trader

Counting Up-Right Grid Paths With No k Consecutive Moves in One Direction

A frog starts at $(0, 0)$ and wants to reach $(X, Y)$, where $X$ and $Y$ are nonnegative integers. Each move takes it one unit right or one unit up. T...

Statistics & MathDynamic ProgrammingMath & Number Theory
5
0
64 people solved
Sep 19, 2026
Swiggy logo
Swiggy
Medium
Product Manager

Designing a Food Delivery App Feature That Catches AI-Written Reviews

You are a product manager at Swiggy, the Indian food delivery platform, where customers can review the restaurants they order from and the dishes they...

Product Design & StrategyTrust & SafetyAI Product Management
6
0
94 people solved
Oct 20, 2026
Amazon logo
Amazon
Medium
Software Engineer

Minimize Delivery-Grid Inconvenience

Minimize Delivery-Grid Inconvenience A binary grid marks delivery centers with 1 and all other cells with 0. The distance between two cells is Chebysh...

Coding & AlgorithmsGrids & MatricesBinary Search
63
2
573 people solved
Aug 26, 2026
Waymo logo
Waymo
Medium
Data Scientist

Model Rare Events with a Log Link and Handle Zero Counts

Model Rare Events with a Log Link and Handle Zero Counts Explain how a log-form model can be used for rare-event data and why it may be useful. Be pre...

Statistics & MathRegression & Statistical ModelingProbability
13
0
129 people solved
Sep 28, 2026
Plaid logo
Plaid
Medium
Software Engineer Locked

Validate Evaluation Chains and Resolve Boolean Outcomes

Resolve Boolean evaluation chains, detect cycles and paths into cycles, and handle disconnected components with a linear-time graph traversal.

Coding & AlgorithmsGraphs
56
0
508 people solved
Sep 1, 2026
Pinterest logo
Pinterest
Hard
Software Engineer Locked

Fewest Subsequences of a Source String That Concatenate to a Target String

Given a source string and a target string, return the fewest subsequences of the source whose concatenation equals the target, or -1 when the target c...

Coding & AlgorithmsGreedyTwo Pointers & Sliding Window
31
1
277 people solved
Sep 19, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Ownership Beyond Your Scope and Delivering Against a Tight Deadline

Answer two behavioral questions based on Amazon's Leadership Principles, each with a real experience; for an entry-level candidate an internship, a jo...

Behavioral & LeadershipOwnership & Execution
1
0
15 people solved
Oct 24, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer Locked

Design a Multi-Tenant Enterprise RAG Assistant: Hybrid Retrieval, Reranking, ACLs

Design a multi-tenant retrieval-augmented generation assistant that answers employees' questions from their company's documents with citations. Cover ...

ML System DesignRetrieval-Augmented GenerationEmbeddings & Vector Search
34
0
329 people solved
Sep 20, 2026
Meta logo
Meta
Easy
Software Engineer

Shortest 8-Directional Clear Path Across a Binary Grid

You are given an n x n grid in which every cell is 0 (open) or 1 (blocked). Return the length of the shortest clear path from the top-left cell (0, 0)...

Coding & AlgorithmsGrids & MatricesGraphs
46
1
315 people solved
Sep 21, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Plant Infection Grid Simulation: Days to Stabilize, Immune Plants, Expiring Immunity

A progressive grid simulation: infection spreads daily between adjacent plants, and you compute how many days the garden takes to stabilize, then add ...

Software Engineering FundamentalsGrids & MatricesGraphs
67
0
520 people solved
Sep 20, 2026
Atlassian logo
Atlassian
Easy
Software Engineer

Design a Rate Limiter Service: Components, Scaling and Precision Trade-offs

Design a rate limiter service: a component that decides, for every incoming API request, whether the caller that sent it is still within its allowed n...

System DesignRate LimitingPartitioning & Consistent Hashing
18
0
270 people solved
Aug 13, 2026
Remitly logo
Remitly
Medium
Software Engineer

Process One Transaction per Day to Minimize Total Late Fees

You are given a backlog of transactions, each with a due day. Exactly one transaction can be processed per day. A transaction processed after its due ...

Software Engineering FundamentalsGreedyHeaps & Priority Queues
3
0
36 people solved
Oct 15, 2026
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, Microsoft, Yandex, TCS, Infosys, Adobe

Easy
Software Engineer

Remove Chosen Values from an Array Prefix

Problem Given the integer array nums and integer val, remove every occurrence of val in place. Return the number k of elements whose values differ fro...

Coding & AlgorithmsTwo Pointers & Sliding Window
5
0
34 people solved
Hudson River Trading logo
Hudson River Trading
Hard
Software Engineer

Final Grid Position Under Timestamped Direction Changes With Dot Obstacles

An object sits on a rectangular grid. Over time, a list of timestamped actions sets the direction in which it travels: up, down, left or right. While ...

Coding & AlgorithmsSimulation & State Machines
54
0
394 people solved
Aug 8, 2026
Xiaohongshu logo
Xiaohongshu
Medium
Backend Engineer

Wake a Timed Job Scheduler When Its Earliest Task Changes

Implement the scheduling logic for timed jobs using a priority queue. When a new job becomes the earliest queued job, wake the scheduler so it can res...

Software Engineering FundamentalsConcurrencyHeaps & Priority Queues
2
0
22 people solved
Oct 31, 2026
IBM logo
IBM
Hard
Software Engineer

Count Servers With No Requests in Each Query's Time Window

A system has n servers with ids 1 through n. You are given a request log in which each entry [server_id, time] records that server server_id received ...

Coding & AlgorithmsTwo Pointers & Sliding WindowSorting
2
0
16 people solved
Oct 25, 2026
Capital One logo
Capital One
Medium
Software Engineer

Count Three-Digit Numbers With All-Distinct Digits in a Range

Given two three-digit integers left and right, count how many integers in the inclusive range from left to right have three pairwise different digits,...

Coding & AlgorithmsMath & Number Theory
11
0
81 people solved
Oct 16, 2026
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