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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
Goldman Sachs logo
Goldman SachsGoogleAmazon

Also asked at Amazon, Bloomberg, Meta, Microsoft

Medium
Software Engineer

Count Tilings with Dominoes and L-Shaped Trominoes

Problem Tile a 2-by-n board completely using 2-by-1 dominoes and L-shaped three-cell trominoes, allowing rotations. Tiles may not overlap or extend ou...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
2
0
16 people solved
Coinbase logo
Coinbase
Hard
Software Engineer

Implement an In-Memory Database

Design and implement an in-memory database that stores records by key. Each record is a map from field to integer value. Implement the following funct...

Coding & AlgorithmsData Structure Design
30
0
461 people solved
Apr 29, 2026
Apple logo
Apple
Medium
Software Engineer

Solve 15 common Apple coding questions

The post summarizes high-frequency coding problems reported for Apple Software Engineer interviews. Practice the following algorithm and data-structur...

Coding & AlgorithmsTwo Pointers & Sliding Window
118
0
875 people solved
Jan 30, 2026
Citadel logo
Citadel
Easy
Software EngineerIntern Locked

Reduce Hashing and Safely Delete Shared File Content

Design file-content deduplication with deferred hashing, collision checks, stable shared-content identities, and reference-counted deletion.

System DesignData Structure DesignFile & Media Storage
26
1
268 people solved
Sep 3, 2026
Scale AI logo
Scale AI
Medium
Product Manager

Making the Case for Joining Scale AI as a Product Manager

You are interviewing for a product manager role at Scale AI, and the interviewer asks what draws you to the company. Give the answer you would deliver...

Behavioral & LeadershipMotivation & Fit
1
0
11 people solved
Oct 1, 2026
Snapchat logo
Snapchat
Hard
Machine Learning Engineer

Explain Bias and Variance in Model Generalization

Explain Bias and Variance in Model Generalization Explain the bias–variance tradeoff in machine learning. Use a supervised prediction setting of your ...

Machine LearningML FundamentalsModel Evaluation
4
0
40 people solved
Sep 12, 2026
Google logo
GoogleAmazonInfosys

Also asked at Infosys, myKaarma, Microsoft, Meta, Samsung, TCS, Uber, Bloomberg, PhonePe, Goldman Sachs, Cisco, Salesforce, UiPath, Paytm

Hard
Software Engineer

Maximize Coins from Bursting All Balloons

Problem Burst every balloon in some order. Bursting one earns its value times the values of its currently adjacent surviving neighbors; a missing oute...

Coding & AlgorithmsDynamic Programming
1
0
12 people solved
Revolut logo
Revolut
Medium
Software EngineerNew Grad

Implement a thread-safe money transfer

Problem: Implement a concurrent-safe transfer function You are given an in-memory store of bank accounts: - Each account has an accountId and a balanc...

Coding & AlgorithmsConcurrency
30
0
464 people solved
Feb 11, 2026
Tesla logo
Tesla
Hard
Software Engineer Locked

Implement Reduce and Derive Map and Filter from It

Explain reduce semantics, derive ordered map and filter with a reducer, and compose them over table rows while handling empty input and accumulator co...

Software Engineering FundamentalsProgramming Languages
5
1
63 people solved
Sep 13, 2026
Salesforce logo
Salesforce
Medium
Software EngineerSenior+ Locked

Design a Coffee-Shop Order-Management System

Design coffee-shop ordering with menu snapshots, order states, idempotent payment coordination, preparation queues, and recovery from partial failures...

System DesignSystem Design FundamentalsDistributed Transactions & Idempotency
11
0
91 people solved
Sep 2, 2026
Netflix logo
Netflix
Medium
Software Engineer Locked

Report Tree Levels and Balanced Subtrees

Implement describe_balanced_nodes(values) for a binary tree represented as a zero-based heap array. Work through the function contract, boundary cases...

Coding & Algorithms
14
0
194 people solved
Aug 11, 2026
Instacart logo
Instacart
Easy
Software Engineer Locked

Calculate Inventory Purchases with Buy-X-Get-Y-Free Coupons

Calculate exact-cent inventory totals with stock checks and a clearly defined buy-X-get-Y-free coupon, including partial groups and two-decimal output...

Coding & AlgorithmsMath & Number Theory
5
0
71 people solved
Sep 18, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Reconstruct an Itinerary from Flight Tickets

Reconstruct an itinerary starting at JFK that uses every flight ticket exactly once, including duplicate tickets and cycles. When several complete iti...

Coding & AlgorithmsGraphsSorting
31
0
208 people solved
Aug 7, 2026
Google logo
Google
Medium
Software EngineerSenior+

Assign the Minimum Number of Cars to Rental Requests

Each rental request has a unique request ID, a start time, and an end time. Assign a car ID to every request so that one car is never used by overlapp...

Coding & AlgorithmsIntervals & SchedulingGreedy
1
0
32 people solved
Jun 27, 2026
Visa logo
VisaSquarepointZomato

Also asked at Zomato, Akuna Capital, BNY Mellon, DoorDash, Amazon, TikTok, Salesforce, Google, Microsoft, NCR

Hard
Software Engineer

Choose One Initial Infection to Remove from an Undirected Network

Problem In the undirected adjacency matrix graph, infection spreads across every edge until no further nodes can become infected. Remove exactly one n...

Coding & AlgorithmsGraphs
1
0
20 people solved
Google logo
GoogleMeta
Medium
Software Engineer

Group Strings Equivalent under Uniform Alphabet Shifts

Problem Group lowercase strings when shifting every letter by the same alphabet offset, with z-to-a wraparound, can transform one into the other. Retu...

Coding & AlgorithmsArrays & StringsMath & Number Theory
1
0
15 people solved
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Count Connected Friend Groups

Count connected friend groups from a symmetric adjacency matrix where indirect connections place people in the same group. Work within a 200-person li...

Coding & AlgorithmsGraphs
65
0
470 people solved
Jul 1, 2026
Ramp logo
Ramp
Medium
Software Engineer

Find an Exit in a URL Maze

You are given a starting URL for a web-based maze. Each URL represents one room in the maze. Your task is to write a program that discovers whether th...

Coding & AlgorithmsGraphsAPI Integration & HTTP Clients
65
0
788 people solved
Apr 21, 2026
ByteDance logo
ByteDance
Medium
Software EngineerNew Grad

Check Whether an n x n Tic-Tac-Toe Game Is Over (Win or Draw)

You are given the current state of an n x n tic-tac-toe board played by two players. A player wins by occupying all n cells of any row, any column, th...

Coding & AlgorithmsGrids & Matrices
3
0
53 people solved
Sep 13, 2026
Epic Systems logo
Epic SystemsGoogle
Medium
Software Engineer

Recognize a Complete Additive Digit Partition

Problem Return whether num can be split into at least three decimal numbers such that every number after the first two equals their sum. Use the entir...

Coding & AlgorithmsBacktracking & RecursionMath & Number Theory
1
0
14 people solved
Previous1...102103104...929Next
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