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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
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
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
Amazon logo
Amazon
Hard
Software Engineer

Find Affected Services After Shutdown

You are given a set of services and their dependency relationships. The input is a hash map where each key is a service name, and the value is a list ...

Coding & AlgorithmsGraphs
46
1
454 people solved
Jan 26, 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
Airbnb logo
Airbnb
Medium
Software Engineer

Compute shortest path to collect all keys

You are given an m×n grid containing walls (#), open cells (.), a single start cell (@), up to six keys labeled 'a'–'f', and matching doors 'A'–'F' th...

Coding & AlgorithmsGrids & MatricesGraphs
14
0
162 people solved
Jul 31, 2025
Amazon logo
Amazon
Medium
Software Engineer

Sort a Permutation with Reversals and Left Rotations

Sort a Permutation with Reversals and Left Rotations You are given an array nums of length n containing every integer from 0 through n - 1 exactly onc...

Coding & AlgorithmsArrays & StringsGraphs
0
0
10 people solved
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
Instacart logo
Instacart
Medium
Software Engineer

Evaluate a Target Variable from Assignments with Plus, Minus, Cycles and Conflicts

You are given a list of assignment equations, each of which assigns a value to one variable, and the name of a target variable. Compute the value of t...

Software Engineering FundamentalsGraphsParsing & Interpreters
1
0
14 people solved
Oct 10, 2026
Google logo
Google
Hard
Software Engineer Locked

Find minimum threshold enabling grid path

This question evaluates a candidate's understanding of grid pathfinding, reachability under constraints, and algorithmic optimization, focusing on ski...

Coding & AlgorithmsBinary SearchGrids & Matrices
15
1
212 people solved
Feb 11, 2026
Crowdstrike logo
Crowdstrike
Medium
Software Engineer Locked

Maximize the minimum value along a grid path

This question evaluates a candidate's competence in graph traversal and path-optimization concepts, emphasizing reasoning about path scores and handli...

Coding & AlgorithmsGrids & MatricesGraphs
6
0
109 people solved
Jan 22, 2026
DRW logo
DRW
Medium
Software Engineer

Solve three algorithmic OA tasks

Solve three algorithmic OA tasks Task 1 (Odd-frequency string): Given an integer N in [1..200000], write an algorithm that returns any length-N string...

Coding & AlgorithmsGraphsGreedy
21
0
231 people solved
Jul 31, 2025
Optiver logo
Optiver
Medium
Software Engineer

Solve three mini-game algorithm tasks

Solve three mini-game algorithm tasks Solve three mini-game algorithm tasks: (a) Move-House Puzzle: Given initial and target arrangements of N labeled...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings
22
0
156 people solved
Jul 17, 2025
Shopify logo
Shopify
Medium
Software Engineer Locked

Parse a CSV and Generate a Gift Exchange

Parse escaped CSV participant data and generate a one-to-one gift exchange in which nobody is assigned to themselves. Cover malformed rows, duplicate ...

Software Engineering FundamentalsParsing & InterpretersData Cleaning & Wrangling
10
0
140 people solved
Jul 8, 2026
Nextdoor logo
Nextdoor
Medium
Machine Learning Engineer

Implement ordering with dependency constraints

You are given n items labeled 0..n−1 and a list of precedence constraints edges[i] = [u, v] meaning u must appear before v. Return a valid ordering of...

Coding & AlgorithmsGraphsHeaps & Priority Queues
17
0
136 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Medium
Software Engineer

Clarify and Design Social-Graph Milestones

Clarify and Design Social-Graph Milestones An interview exercise progresses through a social graph with snapshots, a milestone for retrieving follower...

Software Engineering FundamentalsData Structure DesignGraphs
35
0
244 people solved
Jul 17, 2026
Amazon logo
Amazon
Hard
Software Engineer

Minimum Apple Purchase Cost with Road Taxes

Minimum Apple Purchase Cost with Road Taxes There are n shops numbered 0 through n - 1. Buying apples at shop i costs prices[i]. Each row [u, v, cost,...

Coding & AlgorithmsGraphsHeaps & Priority Queues
0
0
6 people solved
Amazon logo
AmazonBloombergMeta
Medium
Software Engineer

Odd-Cost Assignments on a Deepest Tree Path

Odd-Cost Assignments on a Deepest Tree Path You are given an undirected tree with n nodes labeled from 1 through n, rooted at node 1. The array edges ...

Coding & AlgorithmsTreesMath & Number Theory
1
0
9 people solved
Google logo
Google
Hard
Software Engineer Locked

Minimize travel time with optional meeting point

This question evaluates a candidate's understanding of graph shortest-path computation and meeting-point optimization, testing skills in handling weig...

Coding & AlgorithmsGraphs
16
1
139 people solved
Jan 6, 2026
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