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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
Medium
Software Engineer

Count connected islands using Union-Find

You are given an m x n grid of characters where '1' represents land and '0' represents water. An island is a group of horizontally or vertically adjac...

Coding & AlgorithmsGrids & MatricesGraphs
32
0
248 people solved
Feb 20, 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
Teradata logo
TeradataGoogleAmazon

Also asked at Amazon, Uber, Meta

Medium
Software Engineer

Reach the Last Index with Prime Jumps

Reach the Last Index with Prime Jumps You are given an integer array nums of length n. Start at index 0 and reach index n - 1 using as few jumps as po...

Coding & AlgorithmsGraphsMath & Number Theory
0
0
5 people solved
Meta logo
Meta
Easy
Machine Learning Engineer Locked

Solve four OA string/array/matrix/graph tasks

This multi-part prompt evaluates proficiency in core programming competencies: string parsing and character classification, simulation/greedy processi...

Coding & AlgorithmsArrays & StringsGrids & Matrices
13
0
106 people solved
Feb 12, 2026
Apple logo
Apple
Medium
Software Engineer

Implement rotation, LRU cache, streaming median, cycle detection

Complete the following coding tasks. For each, provide code, justify time/space complexity, and describe edge cases: 1) Image rotation: Given an n×n i...

Coding & AlgorithmsData Structure DesignGraphs
20
0
207 people solved
Sep 6, 2025
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Solve power jumps and graph tour

This pair of problems evaluates algorithmic problem-solving in number representation and combinatorial graph optimization, focusing on competencies in...

Coding & AlgorithmsDynamic ProgrammingGraphs
11
0
100 people solved
Apr 8, 2026
American logo
American
Medium
Software Engineer Locked

Spread Nine Stones Across a Three-by-Three Grid with Minimum Moves

Find the fewest orthogonal stone moves required to leave exactly one stone in every cell of a three-by-three grid.

Coding & AlgorithmsBacktracking & RecursionGrids & Matrices
2
0
24 people solved
Sep 2, 2026
Google logo
Google
Hard
Software Engineer Locked

Minimize maximum height along a grid path

This question evaluates algorithmic pathfinding and graph-modeling skills, specifically reasoning about grid-based route selection where the objective...

Coding & AlgorithmsGrids & MatricesGraphs
19
1
131 people solved
Jan 4, 2026
Oracle logo
Oracle
Medium
Software Engineer

Detect whether a directed graph given as an edge list contains a cycle

You are given a directed graph with n nodes labeled 0 to n - 1 and a list of directed edges. Return whether the graph contains at least one directed c...

Coding & AlgorithmsGraphs
0
0
14 people solved
Aug 1, 2026
Verkada logo
Verkada
Medium
Software Engineer Locked

Find user who can access every camera

This question evaluates reasoning about access-control and transitive relationships, testing skills in graph modeling, reachability, and set operation...

Coding & AlgorithmsGraphsAuthentication & Authorization
20
0
154 people solved
Feb 11, 2026
Bloomberg logo
Bloomberg
Easy
Software Engineer

Check connectivity between two subway stations

You are given a description of subway stations A, B, C, D, E, ... as a graph. For each station, you are told which other stations it directly connects...

Coding & AlgorithmsGraphs
20
1
192 people solved
Mar 11, 2026
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Answer common graph, grid, and array tasks

This set of problems evaluates algorithmic skills across arrays, graph theory, and grid/matrix traversal—covering sliding-window and contiguous-segmen...

Coding & AlgorithmsGraphsGrids & Matrices
28
0
254 people solved
Mar 1, 2026
Roblox logo
Roblox
Easy
Data ScientistSenior+

Find maximum follow depth using recursion

You are given a directed follows relationship representing a social graph: - Each record (follower_id, followee_id) means follower_id follows followee...

Coding & AlgorithmsGraphs
18
0
267 people solved
Dec 11, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer

Find the Lowest Common Ancestor of Two Nodes in an N-ary Tree

You are given a rooted tree in which every node may have any number of children (an N-ary tree). The nodes are labeled 0 to n - 1, node 0 is the root,...

Coding & AlgorithmsTrees
5
0
48 people solved
Jun 7, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Design file deduplication across nested directories

Design and implement a file deduplication tool that, given a root directory, identifies groups of duplicate files. Requirements: traverse nested direc...

Coding & AlgorithmsFile & Media Storage
31
0
292 people solved
Aug 14, 2025
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
Google logo
Google
Medium
Software Engineer

Compute shortest paths with blocked nodes

Given a graph with nodes and edges and a designated source node s, compute the shortest distance from s to every other node. Some nodes are inaccessib...

Coding & AlgorithmsGraphs
27
0
186 people solved
Sep 6, 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
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Simulate Grid Infection

This question evaluates skills in multi-source breadth-first search, synchronous simulation updates, boundary handling, and off-by-one correctness wit...

Coding & AlgorithmsGrids & MatricesSimulation & State Machines
34
0
235 people solved
Mar 9, 2026
Circle logo
Circle
Medium
Software Engineer

Implement cheapest itinerary with date filters

Implement a function that computes the cheapest itinerary from a given origin to a destination using a list of flights, where each flight has (id, sou...

Coding & AlgorithmsGraphs
13
0
183 people solved
Jul 17, 2025
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