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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
Uber logo
Uber
Hard
Software Engineer

Check feasibility of AI course schedule

You are designing a learning path for n AI-related courses, labeled from 0 to n - 1. Some courses have prerequisites. For example, to take course b, y...

Coding & AlgorithmsGraphs
9
0
99 people solved
Nov 17, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer

Find root from child adjacency lists

You're given an unordered list describing a rooted n-ary tree. Each item is a record of the form {id: int, children: set<int>} listing a node's direct...

Coding & AlgorithmsTreesArrays & Strings
7
0
105 people solved
Sep 6, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Implement crawler and bracket validator

Implement two tasks: ( 1) Write a function crawl(start_urls, fetch, max_depth, domain_filter) that visits pages starting from the given seed URLs usin...

Coding & AlgorithmsGraphsStacks & Queues
18
0
207 people solved
Sep 6, 2025
Dropbox logo
Dropbox
Medium
Software Engineer

Design a recursive distributed file crawler

Design a distributed service that crawls a large file system starting from a root path. A client should be able to call an API to start a crawl job, a...

System DesignJob Scheduling & WorkflowsDistributed Transactions & Idempotency
9
0
122 people solved
Jan 25, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Design a File Searcher With Symbolic Links

Design an in-memory file searcher that filters regular files by suffix and size while optionally following symbolic links. Define deterministic paths ...

Software Engineering FundamentalsGraphs
8
0
84 people solved
Jul 10, 2026
Uber logo
Uber
Hard
Software Engineer

Find cheapest flight with at most K stops

Problem You are given a directed weighted graph representing flights between cities. Inputs - An integer n: number of cities, labeled 0..n-1. - A list...

Coding & AlgorithmsGraphs
10
0
100 people solved
Dec 25, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Compute task order and layered execution

You have N tasks labeled 0..N-1 and prerequisite pairs (a, b) meaning task a must complete before task b can start. Return any valid execution order o...

Coding & AlgorithmsGraphs
11
0
177 people solved
Sep 6, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Design read-heavy org chart subordinate counts

You are given manager→direct-report relationships for an organization (an employee has at most one direct manager; the top-level employee has none). B...

System DesignTreesData Structure Design
13
0
119 people solved
Feb 7, 2026
Google logo
Google
Medium
Software Engineer

Compute shortest delivery route with dangerous stops

Delivery Route Planning With Dangerous Stops You are given delivery stops (nodes) and a set of routes. Each route is a list of stops, and you can trav...

Coding & AlgorithmsGraphs
22
0
231 people solved
Dec 15, 2025
Optiver logo
Optiver
Medium
Software Engineer

Detect currency arbitrage with costs

You are given a K×K matrix R of currency exchange rates where R[i][j] is the amount of currency j obtainable for one unit of currency i, and R[i][i] =...

Coding & AlgorithmsGraphs
53
0
385 people solved
Jul 16, 2025
Google logo
Google
Hard
Software Engineer Locked

Compute distance-sum from every tree node

This question evaluates understanding of tree and graph algorithms, including computation of pairwise distances and techniques for aggregating path le...

Coding & AlgorithmsTreesDynamic Programming
29
0
212 people solved
Jan 22, 2026
Instacart logo
Instacart
Hard
Software EngineerSenior+ Locked

Implement store, evaluator, and parser

This question evaluates implementation skills in data structures and algorithms, covering time-based versioning and TTL in an in-memory key-value stor...

Coding & AlgorithmsKey-Value StoresParsing & Interpreters
14
0
127 people solved
Jan 29, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Solve maze tasks and compute shortest routes

This multi-part question evaluates proficiency in grid-based pathfinding and shortest-path reasoning, debugging and incremental code extension, handli...

Coding & AlgorithmsGrids & MatricesGraphs
7
0
93 people solved
Feb 11, 2026
Pinterest logo
Pinterest
Medium
Software Engineer

Reconstruct itinerary with lexicographic ties

You are given m airline tickets as directed pairs [from, to]. Build an itinerary that starts at a specified airport start (e.g., "JFK") and uses every...

Coding & AlgorithmsGraphs
34
0
334 people solved
Sep 6, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Compute nearest dashmart distances for queries

You are given an m x n grid where each cell is one of: -1 for a wall (impassable), 0 for a dashmart (a store), and INF = 2^31 - 1 for an empty room. M...

Coding & AlgorithmsGrids & MatricesGraphs
15
0
139 people solved
Sep 6, 2025
Robinhood logo
Robinhood
Medium
Software Engineer Locked

Compute nearest gate distance in grid

This question evaluates grid traversal, distance propagation, obstacle handling, and in-place matrix update competencies within the Coding & Algorithm...

Coding & AlgorithmsGrids & MatricesGraphs
18
0
193 people solved
Jan 22, 2026
Confluent logo
Confluent
Medium
Software Engineer

Solve constrained monster traversal

Solve constrained monster traversal You are given a directed graph with n rooms labeled 0..n-1; each room i contains a monster with health hp[i] ≥ 0. ...

Coding & AlgorithmsGraphsBacktracking & Recursion
12
0
206 people solved
Jul 27, 2025
Apple logo
Apple
Medium
Software Engineer

Implement DFS for connected components

Given an undirected graph with n nodes (1 ≤ n ≤ 200, 000) and an edge list, implement depth-first search to compute (a) the number of connected compon...

Coding & AlgorithmsGraphs
14
0
91 people solved
Sep 6, 2025
Apple logo
Apple
Medium
Software Engineer

Implement deep clone for complex objects

Implement a deep-clone function for nested objects in JavaScript (or a language of your choice) without using JSON serialization or third-party librar...

Coding & AlgorithmsJavaScript & TypeScriptGraphs
14
0
140 people solved
Sep 6, 2025
TikTok logo
TikTok
Hard
Data Engineer

Count islands using BFS without modifying grid

You are given an m x n binary grid grid where: - 1 represents land - 0 represents water - Islands are groups of horizontally or vertically adjacent la...

Coding & AlgorithmsGrids & MatricesGraphs
10
0
119 people solved
Oct 19, 2025
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