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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
476
Companies
980
Updated
11.10.2026
476 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
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Two-Player Three-Card Poker Simulation: Deal Hands and Decide the Winner

Write a small poker simulation for exactly two players. Deal each player three cards from a shuffled standard 52-card deck, work out which kind of han...

Software Engineering FundamentalsSimulation & State Machines
36
0
332 people solved
Oct 25, 2026
Airbnb logo
Airbnb
Hard
Software Engineer

Design a Banking Ledger with Accepted Transfers and Account Merges

Design a banking simulation in four stages: account creation, deposits and payments; activity ranking; transfers that reserve funds until accepted or ...

Software Engineering FundamentalsSimulation & State MachinesLow-Level Design (OOP)
13
0
163 people solved
Nov 5, 2026
Stripe logo
Stripe
Hard
Software EngineerNew Grad

Split-Tender Payment Events with Gift Card Expiry, ZIP Surcharges and Refunds

A retail customer often pays for one purchase with several payment methods, for example covering a 100-dollar purchase with a 40-dollar gift card plus...

Coding & AlgorithmsSimulation & State Machines
123
0
1367 people solved
Oct 10, 2026
Google logo
Google
Medium
Software EngineerSenior+

Most Used Meeting Room When Meetings Wait for a Free Room

A building has n meeting rooms numbered 0 to n - 1. You are given a list of meetings, each with a start time and an end time, and no two meetings have...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
25
0
171 people solved
Oct 24, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Fault-Tolerant Task Queue with Retries, a Dead-Letter Queue and Task Dependencies

Implement an in-memory, fault-tolerant task queue. Producers add tasks; workers reserve a task, process it, and then either finish it or report that i...

Software Engineering FundamentalsData Structure DesignGraphs
45
0
469 people solved
Oct 12, 2026
Waymo logo
Waymo
Easy
Software Engineer

Total Run Time of Ordered Tasks with a Per-Type Cooldown

A single worker runs a list of tasks in exactly the order given. Each task is labeled by its type, an uppercase letter, so the list is a string such a...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings
6
0
79 people solved
Oct 30, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Code a poker game: model cards, rank five-card hands and pick the winners

Code a poker game. The report names this coding exercise only as "poker game", so settle the scope with the interviewer before writing code. In its us...

Software Engineering FundamentalsLow-Level Design (OOP)
16
0
136 people solved
Oct 18, 2026
Google logo
Google
Hard
Machine Learning Engineer

Group Consecutive Piano Notes into Hand Positions and Assign Fingers

A pianist plays a melody with one hand. Notes are integers, where consecutive integers are adjacent keys. The hand's five fingers cover five adjacent ...

Coding & AlgorithmsArrays & Strings
2
0
32 people solved
Nov 10, 2026
Reddit logo
Reddit
Medium
Software Engineer

Tennis Scoring Classes: Game, Set and a Deuce/Advantage Score Display

Implement scoring for a tennis match between two players, A and B, in three steps: a single game, then a set made of games, then a readable display of...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
7
0
70 people solved
Oct 23, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Design a Real-Time Multiplayer Typing Race with Typo Freezes and Fair Matchmaking

Design an online typing race game. A race has 2 to 8 players. When a race starts, the game generates a passage of text and every player types it; the ...

System DesignMultiplayer Game SystemsDistributed Coordination
55
0
371 people solved
Oct 9, 2026
OpenAI logo
OpenAI
Hard
Software EngineerNew Grad

Microorganism Eating Simulation: Largest Survivor After Left-to-Right Rounds

Several microorganisms are lined up in a row. Each one belongs to a family, identified by a letter, and has a size, a positive integer. A microorganis...

Coding & AlgorithmsSimulation & State Machines
46
0
329 people solved
Oct 6, 2026
Snowflake logo
Snowflake
Hard
Software Engineer

Check Whether the Last Move Wins a Game of Connect Four

Connect Four is played on a vertical grid. Two players take turns dropping pieces into it, and a player wins by lining up four of their own pieces in ...

Coding & AlgorithmsGrids & Matrices
10
0
73 people solved
Oct 21, 2026
Abridge logo
Abridge
Medium
Software EngineerNew Grad

Simulate Wind Moving Leaves on a Grid

A rectangular grid stores the number of leaves in each cell. Apply a sequence of wind directions U, D, L, and R. Leaves that move outside the grid dis...

Coding & AlgorithmsSimulation & State Machines
4
0
48 people solved
Oct 31, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

In-Memory Banking System with Immediate, Offline and Deletable Transfers

Implement an in-memory banking system behind a class interface. The online assessment is split into levels that all extend the same class, and tests c...

Software Engineering FundamentalsLow-Level Design (OOP)Payments & Ledgers
38
3
500 people solved
Sep 24, 2026
Google logo
GoogleBloombergAmazon

Also asked at Amazon, Meta, PayPal, Zopsmart, Microsoft, Infosys, Zoho, Oracle, Salesforce, Walmart Labs, TCS, Apple, PayPay

Medium
Software Engineer

Read a Down-and-Up Character Layout by Row

Problem Convert the string text by placing its characters into rowCount rows. Start at the top row, travel down one row for each successive character,...

Coding & AlgorithmsArrays & StringsSimulation & State Machines
10
1
65 people solved
Capital One logo
Capital One
Medium
Software Engineer

Simulate Rot Spreading Through an Orchard Grid Over a Number of Days

An orchard is a grid of characters: 'R' is a rotten tree, 'H' is a healthy tree, and '-' is empty ground. Every day, each rotten tree turns every heal...

Coding & AlgorithmsGrids & MatricesGraphs
6
0
96 people solved
Oct 16, 2026
Google logo
Google
Medium
Software EngineerIntern

Count Evenings Needed to Finish Whole Chapters in Order

A book has chapters with given reading durations in order. Each evening provides a time budget. You may begin a chapter only if you can finish it that...

Coding & AlgorithmsSimulation & State Machines
5
0
47 people solved
Oct 22, 2026
Databricks logo
Databricks
Medium
Software Engineer

Tic-Tac-Toe Game Logic With a Random-Move Computer Player

Implement the logic of a tic-tac-toe game. The focus is the game logic, not a user interface. Two players, X and O, take turns placing their mark on a...

Software Engineering FundamentalsSimulation & State MachinesLow-Level Design (OOP)
7
0
53 people solved
Oct 14, 2026
Citadel logo
Citadel
Medium
Software Engineer

Two-Player Terminal Battleship: Ship Placement From Input, Then Turn-Based Attacks

Write a Battleship game from scratch as a class that runs in the terminal. Two players share the terminal and take turns. Each player places ships on ...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
24
0
241 people solved
Oct 7, 2026
Whatnot logo
Whatnot
Medium
Software Engineer

Add a last-moment bidding strategy and a Dutch auction to an existing auction system

In a two-hour AI-assisted coding round you receive the starter code of an existing auction system and must add two features to it: 1. A new kind of pa...

Software Engineering FundamentalsLow-Level Design (OOP)AI-Assisted Development
1
0
14 people solved
Nov 10, 2026
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