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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
ZipHQ logo
ZipHQ
Hard
Software Engineer

Find shortest path on infinite grid

You are given an infinite 2D grid with integer coordinates. From a cell (x, y) you may move in 4 directions (North/South/East/West) by 1 cell per move...

Coding & AlgorithmsGraphs
72
0
579 people solved
Mar 11, 2026
Uber logo
Uber
Medium
Software Engineer

Find minimum reversals to orient edges away from root

You are given a connected graph with n nodes labeled 0..n-1 and n-1 directed edges. If you ignore edge directions, the edges form a tree. Each directe...

Coding & AlgorithmsGraphsTrees
48
0
349 people solved
Feb 11, 2026
Airbnb logo
AirbnbGoogleBloomberg
Hard
Software Engineer

Candies Reachable Through Possessed Boxes and Keys

Problem There are n labeled boxes. status[i] says whether box i is initially open; candies[i] is its candy count. After opening a possessed box, colle...

Coding & AlgorithmsGraphsSimulation & State Machines
2
0
16 people solved
Google logo
Google
Easy
Software Engineer

Design a Variable Store With Nested Reference Substitution and Cycle Detection

Design and implement a class that works as a small store of named variables and performs string substitution with them. The class must: - store variab...

Software Engineering FundamentalsGraphsParsing & Interpreters
1
0
17 people solved
Jun 28, 2026
Faire logo
Faire
Medium
Software Engineer

Max inherited discount and discount-source audit in a category DAG

An e-commerce platform organizes product categories in a hierarchy that is not a strict tree but a directed acyclic graph (DAG): a category can belong...

Software Engineering FundamentalsGraphs
2
0
19 people solved
Aug 1, 2026
Amazon logo
AmazonBloombergGoogle

Also asked at Google, Meta, Netflix

Medium
Software Engineer

Enumerate Directed Paths between the End Labels

Problem Given a directed acyclic adjacency-list graph on labels 0 through n-1, return every path beginning at 0 and ending at n-1. Return the paths in...

Coding & AlgorithmsBacktracking & RecursionGraphs
1
0
13 people solved
Harvey logo
Harvey
Medium
Software Engineer

Design Spreadsheet Formula Cells

Design an in-memory spreadsheet that supports assigning either literal integer values or formulas to cells. Cells are identified by names such as A1, ...

Coding & AlgorithmsData Structure DesignGraphs
27
0
366 people solved
Apr 4, 2026
Amazon logo
AmazonGoogleMetaHashedIn

Also asked at Meta, HashedIn

Hard
Software Engineer

Fewest Adjacent-or-Equal-Value Jumps to the Last Index

Problem Start at index 0. In one step, move to an in-bounds neighboring index or to any different index holding the same value. Return the minimum ste...

Coding & AlgorithmsGraphs
0
0
11 people solved
InMobi logo
InMobiAmazonGoogle

Also asked at Google, Microsoft, Bloomberg, Flipkart, Walmart Labs, ServiceNow, Akuna Capital, KLA

Hard
Software Engineer

Edges Whose Removal Disconnects a Network

Problem The connected undirected graph has n labeled servers 0 through n-1, with no self-loops or repeated connections. Return every edge whose remova...

Coding & AlgorithmsGraphs
1
0
9 people solved
IBM logo
IBMPayPal
Medium
Software Engineer

Count Pythagorean Distance Nodes in a Tree

Problem You are given an undirected tree with n nodes numbered 0..n-1, its n-1 edges, and three pairwise distinct target nodes x, y, and z. Distance i...

Coding & AlgorithmsTreesMath & Number Theory
1
0
11 people solved
Digitalocean logo
Digitalocean
Medium
Software Engineer Locked

Specify House-Selection Constraints Before Choosing a Robbery Dynamic Program

Clarify house layout and selection conflicts, derive a conditional linear dynamic program, and explain how circular or graph constraints change it.

Software Engineering FundamentalsDynamic Programming
4
0
34 people solved
Sep 16, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Design Parsing Boundaries for Interdependent Message Types

A protocol-buffer-related parsing task includes dependencies on newly defined message types. Explain which input and output details you would clarify,...

Software Engineering FundamentalsParsing & InterpretersProgramming Languages
5
0
68 people solved
Jun 17, 2026
Google logo
Google
Medium
Software Engineer Locked

Find A Threshold-Limited Path With Minimum Required Safety

Practice a graph path interview problem that asks for the minimum required safety value along a threshold-limited path. The prompt targets minimax pat...

Coding & AlgorithmsGraphs
26
5
177 people solved
Jul 6, 2026
C3 AI logo
C3 AI
Medium
Software EngineerNew Grad

Maximum-Sum Star with at Most K Arms

Given a simple undirected graph with an integer value on each node and an integer k, return the largest node-value sum of any nonempty star subgraph w...

Coding & AlgorithmsGraphsGreedy
5
0
64 people solved
Jan 23, 2026
Axon logo
Axon
Medium
Software Engineer

Find accessible devices via nested memberships

Problem You are given an access model with nested groups: - A group can contain users and also contain other groups (subgroups). - A user can own or b...

Coding & AlgorithmsGraphs
36
1
259 people solved
Mar 1, 2026
Google logo
GoogleAmazonBloomberg
Medium
Software Engineer

Find the Methods Remaining after Removing a Suspicious Group

Problem A project has n methods numbered 0 through n - 1. Each row [a, b] in invocations means that method a invokes method b. Method k contains a kno...

Coding & AlgorithmsGraphs
0
0
11 people solved
Apple logo
Apple
Medium
Software Engineer

Design Deny-Priority Authorization over a Role Graph

Design a role-based access-control system where roles may inherit or reference other roles through a directed graph. Roles can explicitly grant or den...

System DesignAuthentication & AuthorizationCaching
1
0
15 people solved
Jul 25, 2026
Amazon logo
AmazonGoogleUber

Also asked at Uber, Meta, DocuSign, Cleartrip

Hard
Software Engineer

Fewest Arrow Changes Creating a Corner-to-Corner Path

Problem Each grid cell has an arrow:1 right,2 left,3 down,4 up. Some arrows may point outside the grid. Starting at the top-left, follow arrows to the...

Coding & AlgorithmsGraphsGrids & Matrices
1
0
11 people solved
Visa logo
Visa
Medium
Software Engineer

Minimum Travel Cost Between Array Indices

Minimum Travel Cost Between Array Indices You are given a strictly increasing integer array nums and a list of independent queries queries. For an ind...

Coding & AlgorithmsArrays & StringsGraphs
0
0
11 people solved
Microsoft logo
Microsoft
Medium
Data Scientist

Traverse an Org Chart by Level

You are given an organization's reporting structure as a flat list of employee-manager relationships. Exactly one employee is the root (the CEO) and h...

Coding & AlgorithmsTreesStacks & Queues
27
1
243 people solved
Feb 25, 2026
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