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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
InMobi logo
InMobiAmazonGoogle

Also asked at Google, Meta, TikTok, Microsoft, Bloomberg, Oracle

Medium
Software Engineer

Count Subarrays Containing Exactly k Odd Values

Problem Return the number of nonempty contiguous subarrays of nums containing exactly k odd elements. Even elements may appear anywhere within those i...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
1
0
10 people solved
OpenAI logo
OpenAI
Medium
Data ScientistSenior+

Debug and harden trial-assignment Python code

You are given the following simplified Python snippet used to assign users and trigger a 1‑month free trial: """ import random, datetime, requests def...

Data Manipulation (SQL/Python)Experiment Design (A/B Testing)Distributed Transactions & Idempotency
60
1
728 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Product Manager

Diagnose Mixed Reactions to an Instagram Profile Grid Redesign and Plan the Response

Instagram recently changed the profile grid, the tiled view of a person's posts on their profile, and the reaction has been mixed: some people like it...

Analytics & ExperimentationUser Research & DiscoveryLaunch Evaluation
1
0
12 people solved
Aug 10, 2026
Applied Intuition logo
Applied Intuition
Hard
Software Engineer

Implement Nested Transactional Key-Value Store

Implement an in-memory key-value store that processes a batch of commands, one command per line. The store must support nested transactions. Supported...

Coding & Algorithms
13
0
144 people solved
Apr 4, 2026
Databricks logo
Databricks
Hard
Software Engineer Locked

Implement a Tic-Tac-Toe game API

This question evaluates implementation skills in data structures and algorithmic optimization, focusing on efficient state tracking and constant-time ...

Coding & AlgorithmsSimulation & State MachinesData Structure Design
24
0
171 people solved
Jan 7, 2026
Mistral AI logo
Mistral AI
Medium
Software Engineer Locked

Solve Probability and Logic Puzzles Under Interview Pressure

This Mistral AI statistics and math question prepares candidates for probability and logic puzzles under time pressure. It evaluates structured reason...

Statistics & MathPuzzles & BrainteasersProbability
24
0
233 people solved
Jul 2, 2026
Google logo
Google
Medium
Software Engineer

Find a Root for a Three-Color Binary Tree

Find a Root for a Three-Color Binary Tree You are given an undirected tree with nodes labeled 0 through n - 1, its edge list edges, and a string color...

Coding & AlgorithmsTreesGraphs
1
0
10 people solved
Google logo
Google
Medium
Software Engineer Locked

Find the Largest Monotone Increasing Number

Find the largest number no greater than n whose decimal digits are monotone increasing. Develop a linear-time greedy correction that revisits earlier ...

Coding & Algorithms
22
1
129 people solved
Jul 4, 2026
Visa logo
VisaMicrosoftRippling

Also asked at Rippling, Google, Amazon, Bloomberg, HashedIn

Medium
Software Engineer

Count Permutations with Position Divisibility

Problem Count permutations of the integers 1 through n such that at every one-based position i, either the value at i divides i or i divides that valu...

Coding & AlgorithmsBacktracking & RecursionDynamic Programming
2
0
15 people solved
xAI logo
xAI
Medium
Frontend Engineer Locked

Load and Display a React List with useEffect

Load a React list with useEffect while handling endpoint changes, cleanup, stale responses, HTTP and schema errors, stable keys, and user-visible stat...

Software Engineering FundamentalsReact & UI FrameworksAPI Integration & HTTP Clients
3
0
36 people solved
Sep 15, 2026
Salesforce logo
Salesforce
Medium
Product Manager

Leading Stakeholders Through a New Product's Go-to-Market Launch

You are a product manager who has conceived a new product, and it is now time to take it to market. Explain how you would work with your stakeholders ...

Product Design & StrategyRequirements & Launch ExecutionCommunication & Stakeholders
1
0
16 people solved
Jul 12, 2026
Harvey logo
Harvey
Medium
Software Engineer

Implement a Hierarchical File System

Implement an in-memory hierarchical file system. Create a class FileSystem with the following methods: - FileSystem() initializes an empty file system...

Coding & Algorithms
6
1
123 people solved
Apr 12, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Bloomberg, Microsoft

Medium
Software Engineer

Decide Whether an Integer Is a Sum of Two Squares

Problem Return whether nonnegative c equals a × a + b × b for some integers a,b. Zero is allowed for either integer. `cpp class Solution { public: ...

Coding & AlgorithmsMath & Number TheoryTwo Pointers & Sliding Window
1
0
11 people solved
Anthropic logo
Anthropic
Hard
Software Engineer

How do you lead under risk and uncertainty?

Answer the following engineering leadership questions (EM/Senior level). Use specific examples. 1. Tell me about a time you rejected a technically exc...

Behavioral & LeadershipAmbiguity & Decision MakingConflict & Collaboration
65
0
598 people solved
Feb 11, 2026
Databricks logo
Databricks
Hard
Software Engineer Locked

Design a multi-threaded synchronous log writer

This question evaluates a candidate's understanding of concurrent programming, durable I/O, synchronization primitives, ordering guarantees, and syste...

Software Engineering FundamentalsConcurrencyOperating Systems
34
1
631 people solved
Feb 12, 2026
Harvey logo
Harvey
Medium
Software Engineer

Highlight Exact Source Matches

You are given a string text and a list of strings sources. For every exact occurrence of any string in sources within text, wrap the matched character...

Coding & Algorithms
16
2
222 people solved
Apr 15, 2026
Google logo
Google
Medium
Software Engineer Locked

Behavioral Deep Dive: Task Overload, Mid-Project Pivot, Team Innovation, Onboarding

A behavioral round built on variants of common questions with deep follow-ups: handling more tasks than expected and why the conflict arose, changing ...

Behavioral & LeadershipOwnership & ExecutionInnovation & Simplification
2
0
36 people solved
Sep 8, 2026
Disney logo
Disney
Medium
Software EngineerSenior+ Locked

Design a Flash Sale with a Virtual Queue and Exact Inventory

Design a flash-sale system with a virtual queue, controlled admission, exact inventory reservation, and idempotent checkout so every success represent...

System Design
11
0
89 people solved
Aug 7, 2026
Imc logo
Imc
Medium
Software Engineer Locked

Answer conceptual true/false and caching questions

This question evaluates understanding of integer representation, caching eviction policies and trade-offs (LFU vs LRU) including communication of anal...

Software Engineering FundamentalsCachingBinary Search
40
1
475 people solved
Jan 20, 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
69 people solved
Jun 17, 2026
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