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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
Temu logo
Temu
Medium
Software Engineer

Spiral Order of a Matrix With Blocker Cells That Force Clockwise Turns

You are given an m x n matrix of integers. First, return all of its values in clockwise spiral order, from the outside in: start at the top-left cell,...

Coding & AlgorithmsGrids & MatricesSimulation & State Machines
5
0
53 people solved
Sep 22, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Simulate Players Moving Under a Watcher's Gaze

Simulate players advancing along a road while a moving watcher periodically reverses direction and freezes observed players. Follow the exact discrete...

Coding & AlgorithmsSimulation & State MachinesIntervals & Scheduling
52
2
565 people solved
Jul 8, 2026
Capital One logo
Capital One
Medium
Software Engineer Locked

Grid State After a Given Number of Days of Spoilage Spreading to Neighbors

A grid holds empty cells, fresh items and spoiled items, and each day spoilage spreads from every spoiled item to its edge-adjacent fresh neighbors. G...

Coding & AlgorithmsGrids & MatricesGraphs
6
0
67 people solved
Sep 17, 2026
Wise logo
WiseDatabricksMeta

Also asked at Meta, Amazon, Microsoft, Apple, Citadel, Airbnb, Waymo, Bloomberg, TikTok

Medium
Software Engineer

Track Tic-Tac-Toe Winners across Valid Alternating Moves

Problem Implement TicTacToe(int n) and move(row,col,player). The two players alternate, always choose a previously empty valid cell, and stop after a ...

Coding & AlgorithmsData Structure DesignSimulation & State Machines
3
0
28 people solved
Airwallex logo
Airwallex
Medium
Software Engineer Locked

Design a Real-Time Robot Chase Game on a Weighted Terrain Grid

System design question on a server-authoritative real-time chase game where AI robots pathfind toward a player across a 500x500 weighted terrain grid....

System DesignMultiplayer Game SystemsGraphs
8
0
63 people solved
Sep 10, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Simulate Plant Infection With Controlled Burning

You are given an R by C grid of plants. Each plant is initially healthy, infected, recovered, or dead. A plant has up to four orthogonal neighbors. De...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
61
0
424 people solved
Apr 2, 2026
Amazon logo
AmazonMetaMicrosoft

Also asked at Microsoft, Google, Bloomberg, Adobe, Anduril, Salesforce, Applied Intuition, Riotgames, Acorns

Medium
Software Engineer

Advance a Binary Life Board Simultaneously In Place

Problem Apply one Game of Life generation to board. Each cell has up to eight surrounding neighbors. A live cell survives with two or three live neigh...

Coding & AlgorithmsSimulation & State Machines
1
0
12 people solved
Uber logo
Uber
Medium
Software EngineerIntern Locked

Last Truck to Leave a One-Dimensional Lane

This algorithms interview question evaluates reasoning about continuous motion, collisions, and exact rational time in a one-dimensional simulation. I...

Coding & AlgorithmsMath & Number Theory
30
0
543 people solved
Jul 3, 2026
Google logo
Google
Medium
Software Engineer

Last Task Finish Time with Limited CPUs and a Fixed Task Duration

Tasks are scheduled to start at given times, and every task takes the same execution time. At most max_cpus tasks can run at the same moment, one task...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
3
0
48 people solved
May 26, 2026
DoorDash logo
DoorDash
Medium
Software EngineerSenior+ AI Locked

Implement Timeout Refund Workflow

This question evaluates skills in deterministic workflow design, idempotency and retry-safety for external payment integrations, state-transition corr...

Coding & AlgorithmsDistributed Transactions & IdempotencyLow-Level Design (OOP)
23
2
346 people solved
Jun 5, 2026
Helmai logo
Helmai
Medium
Software Engineer

Detect a Deadlock from Thread Lock Acquire and Release Logs

You are given the event log of a multithreaded program, in the order the events happened. Each event records a thread requesting or releasing a lock. ...

Coding & AlgorithmsGraphsSimulation & State Machines
0
0
12 people solved
Sep 30, 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
Google logo
GoogleMicrosoftBloomberg

Also asked at Bloomberg, Meta, Amazon

Easy
Software Engineer

Apply Score-Record Operations and Sum the Remaining Scores

Problem Start with an empty score record. An integer token appends that score; + appends the sum of the latest two remaining scores; D appends twice t...

Coding & AlgorithmsStacks & QueuesSimulation & State Machines
0
0
11 people solved
StubHub logo
StubHub
Medium
Software EngineerNew Grad

Per-Frame Bounce Controller for a Flappy Bird-Style Pipe Game Simulator

In an online assessment you receive a small Python project for a Flappy Bird-style game (the task is called BouncyCosmo) and must implement the strate...

Software Engineering FundamentalsSimulation & State MachinesGraphs
0
0
3 people solved
Nov 4, 2026
IBM logo
IBM
Medium
Software Engineer Locked

Manage Authentication Tokens with a Fixed Time to Live

Implement authentication tokens with a fixed time to live across generate, renew, and count operations. Respect the exact expiry boundary, ignore rene...

Coding & AlgorithmsData Structure DesignSimulation & State Machines
13
0
195 people solved
Aug 23, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Convert Stack Samples into Trace Events

Convert sampled root-to-leaf call stacks into a minimal sequence of start and end trace events. Use longest common prefixes between samples, close fra...

Coding & AlgorithmsStacks & QueuesArrays & Strings
15
0
266 people solved
Jul 8, 2026
Google logo
GoogleVisaAxon

Also asked at Axon, Meta, Amazon, LinkedIn, Anthropic, IBM, Microsoft, Bloomberg, Apple, Uber, Illumio

Medium
Software Engineer

Separate Nested Function Calls into Exclusive Times

Problem Given chronological single-threaded call-stack logs id:start:t or id:end:t, return each function ID's total time executing at the top of the s...

Coding & AlgorithmsStacks & QueuesSimulation & State Machines
0
0
15 people solved
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Build a Progressive Banking Ledger

Implement a timestamped banking ledger with deposits, transfers, spender rankings, scheduled payments, cashback, account merges, and historical balanc...

Coding & AlgorithmsData Structure DesignSimulation & State Machines
12
0
196 people solved
Jul 8, 2026
Voleon logo
Voleon
Medium
Software Engineer

Simulate an exchange and participation-rate trading

Implement a simplified trading simulation in three parts. Part 1 — Process market data / exchange interaction (order book) Design a minimal limit-orde...

Coding & AlgorithmsTrading SystemsData Structure Design
139
0
1134 people solved
Dec 9, 2025
Amazon logo
Amazon
Medium
Software EngineerNew Grad Locked

Inventory Allocation by Bid Priority

This question assesses simulation and priority-queue design skills, requiring careful implementation of tiered, round-robin resource allocation under ...

Coding & AlgorithmsSimulation & State MachinesSorting
31
0
299 people solved
Jun 9, 2026
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