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Master your tech interviews with 18,000+ real questions from top companies.

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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
639
Companies
980
Updated
11.10.2026
639 Questions 980 Companies11.10.2026
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
OpenAI logo
OpenAI
Medium
Software Engineer

Days Until an Infection Spreads to Everyone on a Grid

A grid models people standing in fixed positions during an outbreak. Each cell is empty, holds a healthy person, or holds an infected person. Every da...

Coding & AlgorithmsGrids & MatricesGraphs
11
1
172 people solved
Sep 7, 2026
Stripe logo
Stripe
Medium
Software EngineerSenior+ Locked

Connect JSON Coordinates Through a Documented Drawing API

Plan coordinate parsing and drawing-API integration with explicit geometry semantics, request mapping, error handling, and idempotent recovery.

Software Engineering FundamentalsAPI Integration & HTTP Clients
48
0
504 people solved
Sep 11, 2026
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+

Fewest-Edge Distance Between Two Nodes in a Directed Acyclic Graph

This came as a follow-up to ordering the nodes of a dependency graph. You are given a directed acyclic graph with n nodes labeled 0 to n - 1, a list o...

Coding & AlgorithmsGraphs
14
0
119 people solved
Sep 29, 2026
Nuro logo
Nuro
Medium
Software Engineer

Assign Robots to Nearest Pickup Items on a Grid with Obstacles

A fleet of autonomous delivery robots operates on an m x n grid. There are k robots and k items waiting to be picked up, and each robot must be sent t...

Coding & AlgorithmsGrids & MatricesGraphs
13
0
132 people solved
Oct 4, 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
Medium
Software Engineer

Social Graph with Follow/Unfollow, Snapshots, History Queries and Recommendations

Implement an in-memory social graph in which users follow and unfollow other users. Besides the current relationships, the class must take snapshots o...

Software Engineering FundamentalsData Structure DesignGraphs
8
0
106 people solved
Oct 9, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Fewest Board Switches to Travel Between Two Pins via Shared Boards

Given boards that each hold a list of pins, where one pin can appear on several boards, compute the fewest board switches needed to travel from a star...

Coding & AlgorithmsGraphs
31
2
324 people solved
Sep 7, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Corporation Class: Set Teams and Managers, Check Reporting Lines

Implement a Corporation class with three methods: set_team, set_manager and check_reporting_line. The report names only the class and its three method...

Software Engineering FundamentalsData Structure DesignGraphs
3
1
25 people solved
Oct 18, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Spreadsheet engine with setCell/getCell, cell references, and cycle detection

Implement a spreadsheet engine with two operations: - set_cell(cell, content) stores the content of a cell (setCell in camelCase languages). A cell is...

Software Engineering FundamentalsGraphsData Structure Design
64
2
588 people solved
Sep 28, 2026
Stripe logo
Stripe
Medium
Machine Learning Engineer

Group Accounts Linked Directly or Transitively by Shared Metadata Fields

A platform stores many accounts, and each account carries the same fixed list of metadata fields, such as a name, an email address and a phone number....

Coding & AlgorithmsGraphs
0
0
15 people solved
Nov 2, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Fault-Tolerant Task Queue with Retry Cooldowns, a Dead-Letter Queue and Dependencies

Implement an in-memory task queue that tolerates worker failures. Workers take tasks from the queue; when a worker fails or is preempted while holding...

Software Engineering FundamentalsData Structure DesignGraphs
14
0
169 people solved
Oct 9, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Minutes Until Spoilage Spreads to Every Fresh Item in a Grid

A storage grid holds perishable items. Each cell is empty (0), holds a fresh item (1), or holds a spoiled item (2). Every minute, each fresh item that...

Coding & AlgorithmsGrids & MatricesGraphs
2
0
19 people solved
Oct 24, 2026
Uber logo
UberAmazonGoogleMeta

Also asked at Google, Meta

Hard
Software Engineer

Count Islands After Each Land Addition to an All-Water Grid

Start with an m x n grid in which every cell is water. You receive a sequence of operations: operation i turns the cell positions[i] = [r, c] into lan...

Coding & AlgorithmsGraphsGrids & Matrices
8
0
110 people solved
Harvey logo
Harvey
Medium
Software Engineer

Spreadsheet Class with Formula Cells, Recalculation and Cycle Detection

Implement an in-memory spreadsheet class in stages. The interviewer starts with a simple version and adds requirements after each stage, and the full ...

Software Engineering FundamentalsGraphsData Structure Design
41
1
401 people solved
Sep 18, 2026
Ramp logo
Ramp
Medium
Software Engineer

Crawl an HTTP-served maze to its exit with 503 retries, dead ends and cycles

You are given the base URL of a "maze" served over HTTP. Write a program that explores the maze until it finds the exit, and returns the exit's messag...

Software Engineering FundamentalsAPI Integration & HTTP ClientsGraphs
10
0
165 people solved
Sep 5, 2026
Ramp logo
Ramp
Medium
Software Engineer Locked

Spreadsheet String Concatenation with Dependent Cells

Build a fixed-grid string spreadsheet with concatenation formulas, dependency updates, repeated references, and read-time circular-reference errors.

Coding & AlgorithmsGraphsArrays & Strings
18
0
342 people solved
Sep 18, 2026
Google logo
Google
Hard
Software Engineer

Group prerequisite-linked courses into the earliest possible rounds

There are n courses numbered 0 to n - 1. Each pair [a, b] in prerequisites means course b must be completed before course a can be taken. Courses are ...

Coding & AlgorithmsGraphs
58
2
651 people solved
Sep 29, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer

Exploring a friend network through a restricted API with as few calls as possible

A social product stores friendships between users, but you cannot read the graph directly. The only access is a remote API: `python def get_friends(us...

Software Engineering FundamentalsGraphsAPI Integration & HTTP Clients
20
0
223 people solved
Sep 25, 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
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
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