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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
Bloomberg logo
BloombergMercariAxon

Also asked at Axon, Amazon, Google, Rippling

Medium
Software Engineer

Average Travel Times for Directed Station Pairs

Problem Implement UndergroundSystem with its native constructor and methods. checkIn records a customer's station and time; checkOut completes that cu...

Coding & AlgorithmsData Structure DesignArrays & Strings
1
0
16 people solved
Uber logo
Uber
Medium
Software Engineer

Determine balanced k values in a permutation

You are given a permutation p of the integers 1..n. For a number k (where 1 <= k <= n), call k balanced if there exists a contiguous subarray p[l..r] ...

Coding & AlgorithmsTwo Pointers & Sliding Window
56
0
457 people solved
Feb 11, 2026
Amazon logo
AmazonAppleGoogle

Also asked at Google, Microsoft, Meta, Bloomberg, Samsung, LinkedIn, TikTok, Lime, Uber

Medium
Software Engineer

Decide Whether an Undirected Graph Can Be Two-Colored

Problem graph is an undirected adjacency list that may be disconnected. Decide whether its vertices can be split into two sets so that every edge join...

Coding & AlgorithmsGraphs
0
0
15 people solved
Netflix logo
Netflix
Medium
Software Engineer Locked

Find the Longest Run of One Character

Implement the length of the longest consecutive run of one character in an ASCII string. Distinguish adjacent runs from total frequency while handling...

Coding & Algorithms
7
0
84 people solved
Jul 31, 2026
DRW logo
DRW
Hard
Quantitative ResearcherNew Grad Locked

Expected Rounds Until a Shopping-Cart Line Empties Under Random Transfers

Markov chain expectation question in which two lines start with 6 and 7 shopping carts and each round one cart moves from a uniformly chosen line to a...

Statistics & MathProbabilityPuzzles & Brainteasers
6
0
44 people solved
Sep 13, 2026
Google logo
GoogleMetaMicrosoft

Also asked at Microsoft, Amazon, Bloomberg, Oracle

Easy
Software Engineer

Longest Repeated Block Shared by Two Strings

Problem A nonempty string x divides a string when repeating x one or more times produces that entire string. Return the longest x dividing both str1 a...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
0
0
11 people solved
Snowflake logo
Snowflake
Medium
Software Engineer

Assign Each Person the Nearest Cake in a One-Dimensional Row

People and cakes stand in a single row of positions, described by an integer array whose values are 0, 1 or 2. The original question asks for the clos...

Coding & AlgorithmsArrays & Strings
3
0
42 people solved
Apr 28, 2026
Apple logo
Apple
Hard
Software Engineer

Implement a Reusable Cyclic Barrier from a Mutex and Condition Variables

Implement a cyclic barrier. The barrier is created for a fixed number of threads, called parties. Each thread calls wait() when it reaches a synchroni...

Software Engineering FundamentalsConcurrency
4
0
43 people solved
Aug 28, 2026
Goldman Sachs logo
Goldman Sachs
Easy
Software Engineer Locked

Design a Pastebin Service: Requirements, Entities, APIs and End-to-End Architecture

Design a pastebin-style service that stores text and serves it through short links, working from functional and non-functional requirements through co...

System DesignSystem Design FundamentalsAPI Design
10
0
77 people solved
Sep 13, 2026
Basis Ai logo
Basis Ai
Easy
Software Engineer

Why Infrastructure, Handling Pressure, and Going to the Lowest Level of Detail

In a hiring manager conversation focused on behavioral questions, the interviewer asks about your interests, why you are drawn to a particular technic...

Behavioral & LeadershipMotivation & Fit
0
0
2 people solved
Nov 4, 2026
Grammarly logo
Grammarly
Medium
Software Engineer

Implement a Transactional Key-Value Store

Design an in-memory key-value store that supports transactions. Required operations: - set(key, value): assign or overwrite the value for a key. - get...

Coding & AlgorithmsData Structure DesignStacks & Queues
20
0
214 people solved
Apr 6, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer Locked

Multi-Agent Collision Simulator (Unicycle Kinematics)

This question tests practical coding ability in robotics simulation, specifically implementing unicycle kinematics and discrete-time modeling via forw...

Coding & Algorithms
6
0
123 people solved
Jun 21, 2026
Infosys logo
InfosysBloombergSquarepoint

Also asked at Squarepoint, Microsoft, Publicis Sapient, Oracle

Medium
Software Engineer

Cross a Three-Lane Road with Few Side Jumps

Problem At point zero on a three-lane road, a frog starts in lane 2. obstacles[i] is zero for no obstacle or names the one blocked lane at point i. Mo...

Coding & AlgorithmsDynamic Programming
1
0
16 people solved
Headlands logo
Headlands
Medium
Data ScientistNew Grad Locked

Compare Candy-Color Guessing Experiments with Different Sample Sizes

Use one-sided binomial tests to compare 2 of 3 and 40 of 100 correct guesses among five colors, with explicit assumptions and careful interpretation.

Statistics & MathHypothesis TestingProbability
2
0
50 people solved
Aug 31, 2026
PayPal logo
PayPal
Medium
Product Manager

Behavioral: Candidly Naming Your Biggest Dislike in Your Current Product Role

In a behavioral interview for a product manager role at PayPal, the interviewer asks which part of your current job you like least. Answer with a real...

Behavioral & LeadershipMotivation & Fit
1
0
14 people solved
Sep 30, 2026
Boston Consulting Group logo
Boston Consulting Group
Medium
Product Manager

Explain your motivation for joining BCG X as a product manager

You are interviewing for a product manager role at BCG X, Boston Consulting Group's tech build and design unit. The interviewer asks what draws you to...

Behavioral & LeadershipMotivation & Fit
2
0
17 people solved
Jul 29, 2026
Modal logo
Modal
Medium
Software Engineer Locked

Prove an Incremental Shuffle Is Uniform

Prove that the forward Fisher-Yates shuffle produces every permutation of distinct elements with probability 1/n factorial. Use an induction invariant...

Software Engineering Fundamentals
6
0
133 people solved
Jul 12, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design a Digital Game Distribution Platform

Design a digital game distribution platform spanning transactional purchases, refunds and entitlements, immutable builds, chunked CDN downloads, offli...

System Design
24
0
187 people solved
Aug 16, 2026
Airbnb logo
Airbnb
Medium
Data Scientist

Design and Analyze Airbnb Locker Experiment

Airbnb is considering launching a luggage locker feature that lets guests store their bags before their scheduled check-in time, so they don't have to...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
121
0
827 people solved
Feb 21, 2026
Cresta logo
Cresta
Easy
Software Engineer

Productionize a Successful Proof of Concept

Productionize a Successful Proof of Concept Explain how you would take a successful proof of concept into production. The prototype demonstrates feasi...

System Design
8
0
82 people solved
Aug 20, 2026
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