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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
Intuit logo
Intuit
Medium
Software Engineer Locked

Produce valid student lineup from parent array

This question evaluates understanding of rooted tree hierarchies, parent-before-child ordering constraints, and lexicographic minimality when construc...

Coding & AlgorithmsTreesHeaps & Priority Queues
18
0
134 people solved
Feb 11, 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
Snowflake logo
Snowflake
Medium
Software Engineer

Multithreaded Web Crawler with Retries for a Failing Fetch API

Write a web crawler. Starting from one URL, it visits every page reachable by following links, using an API that fetches a page and returns the URLs t...

Software Engineering FundamentalsConcurrencyGraphs
1
0
16 people solved
Apr 28, 2026
Reddit logo
Reddit
Medium
Software Engineer

Find word sequence with 1–2 char changes

Given a beginWord, an endWord, and a dictionary (wordList) of unique same-length lowercase words, determine whether there exists a transformation sequ...

Coding & AlgorithmsGraphs
11
0
190 people solved
Sep 6, 2025
Chalk logo
Chalk
Medium
Software Engineer Locked

Compute rainwater accumulation on a height grid

This question evaluates understanding of grid-based graph traversal, flow simulation to local minima, and the ability to reason about state propagatio...

Coding & AlgorithmsGrids & Matrices
31
0
507 people solved
Feb 11, 2026
ZipHQ logo
ZipHQ
Medium
Software Engineer

Find root IDs and paths

You are given a collection of string blocks, each represented as a JSON object with fields {"id": string, "parentId": string | null}. A block is a roo...

Coding & AlgorithmsTrees
56
0
381 people solved
Aug 11, 2025
Amazon logo
Amazon
Medium
Software EngineerIntern Locked

Design Human Avoidance for Warehouse Robots

This question evaluates sensor fusion, perception-to-motion data flow, short-horizon motion planning, and real-time safety-critical decision-making fo...

System DesignLow-Level Design (OOP)
30
0
407 people solved
May 11, 2026
Citi logo
Citi
Medium
Software Engineer

Implement bidirectional Dijkstra for shortest paths

Given a directed or undirected graph with non‑negative edge weights, design and implement bidirectional Dijkstra (“double Dijkstra”) to find the short...

Coding & AlgorithmsGraphsHeaps & Priority Queues
7
0
140 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Medium
Software Engineer

Implement KV store and plan type conversions

Part 1 — Versioned key-value store: Implement a data structure with set(key, value, t) and get_at(key, t) that returns the value for key whose timesta...

Coding & AlgorithmsData Structure DesignGraphs
68
0
529 people solved
Sep 6, 2025
Uber logo
Uber
Medium
Software Engineer

Find shortest jumps in circular array

You are given a circular array arr of length n. From index i, you may jump exactly arr[i] steps either to the left or to the right (wrapping around th...

Coding & AlgorithmsGraphs
14
0
142 people solved
Jan 28, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Order Courses by Prerequisites, Returning the Smallest Valid Order

There are num_courses courses, numbered 0 to num_courses - 1. Some courses must be completed before others: each pair [a, b] in prerequisites means co...

Coding & AlgorithmsGraphsHeaps & Priority Queues
1
1
16 people solved
Apr 2, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer

Design algorithms for test scheduling

Design algorithms for test scheduling You have tens of thousands of graphics test cases with inter-test dependencies and hardware/driver constraints. ...

Coding & AlgorithmsGraphsJob Scheduling & Workflows
9
0
136 people solved
Aug 9, 2025
DRW logo
DRW
Medium
Software Engineer

Solve odd-string, digit swap, patient slot assignment

Question Task 1 – Odd-occurrence string: Write a function that, given an integer N (1..200 000), returns a length-N lowercase string in which every le...

Coding & AlgorithmsGraphsArrays & Strings
13
0
237 people solved
Aug 4, 2025
Scale AI logo
Scale AI
Medium
Software Engineer Locked

Implement a Task Processor

This question evaluates understanding of priority-based scheduling and dependency resolution, focusing on data structures and graph-ordering concepts ...

Coding & AlgorithmsData Structure DesignHeaps & Priority Queues
46
0
403 people solved
Feb 27, 2026
Adobe logo
Adobe
Medium
Software Engineer

Determine task order with prerequisites

You are given n tasks labeled 0..n−1 and a list of prerequisite pairs (a, b) meaning task b must be completed before task a. Determine one valid order...

Coding & AlgorithmsGraphs
17
0
120 people solved
Sep 6, 2025
BlackRock logo
BlackRock
Medium
Software Engineer

Solve hierarchy distance and digit-square convergence

You have two independent tasks: A) Organization hierarchy distance Given a list of (employee, manager) pairs that form a complete hierarchy (a single ...

Coding & AlgorithmsTreesMath & Number Theory
6
0
127 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software EngineerSenior+

Find All Binary Tree Nodes Exactly K Edges from a Target Node

You are given a binary tree whose node values are all distinct, the value of a target node, and a non-negative integer k. Return the values of every n...

Coding & AlgorithmsTreesGraphs
0
0
14 people solved
Apr 1, 2026
Coinbase logo
Coinbase
Hard
Software Engineer

Maximize block fee with transaction selection

You are given N transactions. Each transaction has: - id (unique identifier) - size (positive integer) - fee (positive integer) You are building a blo...

Coding & AlgorithmsGreedy
37
0
401 people solved
Feb 13, 2026
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
Waymo logo
Waymo
Medium
Software Engineer Locked

Compute ETA between two map nodes

This question evaluates proficiency in graph algorithms and shortest-path computation, specifically handling weighted directed graphs, non-negative tr...

Coding & AlgorithmsGraphs
25
0
219 people solved
Feb 11, 2026
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