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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
Netflix logo
Netflix
Medium
Software Engineer

Implement topological sort from string input

You receive N lines of raw text describing task dependencies, e.g., 'install A after B', 'C->A', 'B before D'. Implement a function that: ( 1) parses ...

Coding & AlgorithmsParsing & InterpretersGraphs
21
0
267 people solved
Jul 17, 2025
Waymo logo
Waymo
Medium
Software Engineer

Link Object Tracks Across Two Perception Systems and Merge Their Histories

Two perception systems, A and B, track objects in the same scene independently. Each system assigns its own ids to the objects it tracks, so one physi...

Software Engineering FundamentalsData Structure DesignGraphs
2
0
25 people solved
Apr 14, 2026
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Find smallest common organization for employees

The question evaluates competency in hierarchical and graph data structures, including tree lowest-common-ancestor reasoning, DAG ancestor minimality,...

Coding & AlgorithmsTreesGraphs
23
0
177 people solved
Jan 14, 2026
Netflix logo
Netflix
Medium
Software Engineer Locked

Compute minimum semesters to finish courses

This question evaluates graph theory and scheduling competencies, including dependency resolution, cycle detection in directed graphs, and capacity-co...

Coding & AlgorithmsGraphs
18
0
275 people solved
Feb 4, 2026
NVIDIA logo
NVIDIA
Hard
Software Engineer Locked

Implement short algorithms on logs, grids, and strings

This multi-part Coding & Algorithms question evaluates algorithmic problem-solving skills and mastery of core competencies including temporal window r...

Coding & AlgorithmsArrays & Strings
24
0
245 people solved
Feb 11, 2026
Airbnb logo
Airbnb
Hard
Software Engineer

Find best downhill ski run from a start

You are given an R x C grid of integers representing elevations. A skier starts at a given cell (sr, sc). From a cell, the skier may move up/down/left...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
33
2
460 people solved
Jan 19, 2026
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+ Locked

Compute graph distance and impacted services

This question evaluates proficiency in graph algorithms and traversal (shortest-path/BFS and cycle handling), file-path/tree modeling, dependency grap...

Coding & AlgorithmsGraphs
22
0
246 people solved
Dec 26, 2025
Databricks logo
Databricks
Medium
Software Engineer Locked

Choose fastest transportation mode on city grid

This question evaluates a candidate's ability to model constrained grid movement and perform weighted shortest-path optimization, covering skills in g...

Coding & AlgorithmsGraphs
22
0
245 people solved
Feb 11, 2026
Cubist logo
Cubist
Medium
Software Engineer

Design a class to submit jobs with dependencies and track their status

Design and implement a class that lets callers submit jobs and track the status of each job. A job can depend on other jobs: it must not start until e...

Software Engineering FundamentalsData Structure DesignGraphs
0
0
8 people solved
Aug 17, 2026
Google logo
GoogleAmazonBloomberg
Hard
Software Engineer

Count Equal-Endpoint Tree Paths Whose Interior Never Exceeds Them

Problem A good simple path in the tree edges has equal endpoint values in vals, and every value along it is at most that endpoint value. Count distinc...

Coding & AlgorithmsGraphsTrees
1
0
8 people solved
Snowflake logo
Snowflake
Medium
Software Engineer

Effective Permissions in an Inheritance DAG with Allow and Deny Lists

Permissions are inherited along the edges of a directed acyclic graph. Each node, such as a group, a folder or a resource, has its own allow list and ...

Software Engineering FundamentalsGraphsAuthentication & Authorization
2
0
19 people solved
Apr 28, 2026
Google logo
GoogleUberRoku

Also asked at Roku, Adobe, Airbnb, PhonePe

Hard
Software Engineer

Find the Fewest Grid Moves Needed to Collect Every Key

Problem In grid, @ is the single start, . is empty floor, and # is a wall. Lowercase letters are keys and their uppercase versions are locks. Move one...

Coding & AlgorithmsGrids & MatricesGraphs
0
0
7 people solved
Robinhood logo
Robinhood
Easy
Software Engineer

Compute trigger counts in a DAG

You are given a directed acyclic graph (DAG) that represents trigger dependencies between tasks. - Each node represents a task. - There is exactly one...

Coding & AlgorithmsGraphsDynamic Programming
16
0
206 people solved
Dec 8, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Deep-Clone a Hand-Built Doubly Linked List with an Arbitrary Special Pointer

Implement a doubly linked list in which every node has four fields: - value: the node's value (assume an integer); - left: the previous node, or null ...

Software Engineering FundamentalsLinked Lists
1
0
16 people solved
Aug 4, 2026
Uber logo
Uber
Medium
Software EngineerIntern Locked

Minimum Delivery Cost Between Cities

This coding interview question evaluates cost optimization and routing over a city network with value-based moves and conditional directed discounts. ...

Coding & AlgorithmsGraphs
19
1
150 people solved
Jul 3, 2026
Amazon logo
Amazon
Hard
Software Engineer

Cheapest Grid Path with a Turn Limit

Cheapest Grid Path with a Turn Limit You are given a rectangular matrix grid and an integer k. The value in a cell is the cost of visiting it. Start a...

Coding & AlgorithmsDynamic ProgrammingGraphs
0
0
8 people solved
Google logo
Google
Hard
Software Engineer Locked

Compute minimax grid path and network delay

This question evaluates algorithmic problem-solving in shortest-path and path-optimization contexts, specifically minimax pathfinding on a grid and si...

Coding & AlgorithmsGraphsBinary Search
25
0
303 people solved
Jan 22, 2026
Uber logo
Uber
Medium
Machine Learning Engineer

Compute minimal time to finish dependent tasks

Coding: Task Scheduling With Prerequisites (Parallel Allowed) You have n tasks labeled 1..n. Each task takes exactly 1 unit of time to complete. Some ...

Coding & AlgorithmsGraphs
20
0
247 people solved
Dec 15, 2025
Google logo
Google
Easy
Software Engineer Locked

Compute decayed power levels in a graph

This question evaluates knowledge of graph algorithms and distance-based propagation, testing concepts such as shortest-path distance computation, mul...

Coding & AlgorithmsGraphs
24
0
204 people solved
Feb 12, 2026
Runloop logo
Runloop
Medium
Software Engineer

Design a Minesweeper Bot That Decides Which Cell to Flag or Reveal Next

Design a bot that plays Minesweeper. The bot's goal is to win as often as possible, which means clearing the board without ever revealing a mine. The ...

Software Engineering FundamentalsBacktracking & RecursionProbability
0
0
8 people solved
Jul 11, 2026
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