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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
Patreon logo
Patreon
Medium
Software Engineer

Evaluate word-guess feedback with repeats

You are implementing feedback for a Wordle-like guessing game. Part 1 — Produce feedback for one guess You are given two strings of equal length guess...

Coding & AlgorithmsArrays & StringsSimulation & State Machines
28
0
219 people solved
Dec 2, 2025
OpenAI logo
OpenAI
Easy
Software Engineer Locked

Simulate a Turn-Based Two-Player Game

This question evaluates API design, state management, move validation, board representation, and correctness guarantees for a turn-based game simulato...

Coding & AlgorithmsSimulation & State MachinesLow-Level Design (OOP)
28
0
185 people solved
Feb 13, 2026
Roblox logo
Roblox
Medium
Software Engineer

Simulate robot path and detect boundedness

A robot starts at (0, 0) facing north on an infinite 2D plane. It executes a command string s consisting of 'G' (move forward one unit), 'L' (turn lef...

Coding & AlgorithmsSimulation & State Machines
86
0
622 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Hard
Machine Learning Engineer Locked

Design an Extensible Simulation Engine

This question evaluates object-oriented design, state modeling, API design, modularity, testability, and the ability to architect an extensible simula...

Software Engineering FundamentalsSimulation & State MachinesLow-Level Design (OOP)
13
0
194 people solved
Apr 3, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Solve Four Interview Coding Problems

This question set evaluates algorithmic problem-solving skills including graph traversal and itinerary reconstruction, time-sorted search and binary s...

Coding & AlgorithmsGraphsBinary Search
24
0
183 people solved
Feb 1, 2026
Amazon logo
AmazonMicrosoftMeta
Medium
Software Engineer

Winner Under a Divisible-by-Three Losing Rule

Problem Alice and Bob alternately remove any one stone, with Alice moving first. The player who makes the total value of all removed stones divisible ...

Coding & AlgorithmsMath & Number TheorySimulation & State Machines
0
0
7 people solved
Asana logo
Asana
Medium
Software Engineer

Explain code complexity and design two games

You are given three independent interview prompts. 1) Code comprehension & complexity - Given two short code snippets (language-agnostic), explain in ...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
62
0
439 people solved
Feb 8, 2026
Scale AI logo
Scale AI
Medium
Software Engineer

Update a Neuron Grid

You are given an m x n integer matrix neurons. - A cell is a firing neuron if its value is 0. - A cell is a non-firing neuron if its value is greater ...

Coding & AlgorithmsSimulation & State Machines
17
1
320 people solved
Feb 22, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Minimize deaths in spreading plant infection

This question evaluates a candidate's ability to model and simulate dynamic grid processes, reason about infection propagation and delayed state chang...

Coding & AlgorithmsSimulation & State Machines
110
0
1170 people solved
Apr 1, 2026
CloudKitchens logo
CloudKitchens
Medium
Software Engineer

Design real-time kitchen order fulfillment system

Backend Engineering Challenge: Real-time order fulfillment Design and implement (conceptually) a single-process, real-time backend system for fulfilli...

System DesignData Structure DesignConcurrency
25
0
461 people solved
Feb 11, 2026
Citadel logo
Citadel
Medium
Software EngineerIntern

Simulate 2048 and pack board into uint64

Problem: 2048 move simulation + board compression You are implementing part of the 2048 game on a fixed 4×4 grid. Part A — Simulate a move Given a 4×4...

Coding & AlgorithmsSimulation & State MachinesBit Manipulation
36
0
440 people solved
Feb 11, 2026
Roblox logo
Roblox
Medium
Software Engineer

Detect runs and collapse a numeric grid

You are given an m x n grid of digits (0– 9). Phase 1: Find every horizontal or vertical run of length ≥ 3 consisting of the same digit. For each run,...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
61
0
561 people solved
Sep 6, 2025
Pinduoduo logo
Pinduoduo
Medium
Software Engineer

Clockwise Spiral Matrix Traversal That Turns at Blocked Cells

Given an m x n matrix of integers, return its values in clockwise spiral order: start at the top-left cell, go right along the top row, down the right...

Coding & AlgorithmsGrids & MatricesSimulation & State Machines
2
0
17 people solved
Jul 17, 2026
Salesforce logo
Salesforce
Medium
Software Engineer

Implement a traffic-light UI with JS

Frontend Coding: Traffic Light Build a simple traffic light component using HTML + CSS + JavaScript. Requirements - Render a vertical traffic light wi...

Coding & AlgorithmsJavaScript & TypeScriptSimulation & State Machines
20
0
280 people solved
Jan 22, 2026
Amazon logo
AmazonInfosysGoogle

Also asked at Google, Bloomberg, Geico, Apple, Microsoft, TikTok, Aqr

Medium
Software Engineer

Maximize Trading Profit with a One-Day Cooldown

Maximize Trading Profit with a One-Day Cooldown Given daily prices prices, return the maximum profit obtainable by buying and selling one share at a t...

Coding & AlgorithmsDynamic Programming
0
0
4 people solved
Google logo
GoogleMicrosoft
Medium
Software Engineer

Build a Target Stack from an Increasing Stream

Problem Start with an empty stack and the stream 1,2,...,n. A "Push" consumes the next stream integer and places it on the stack; a "Pop" removes the ...

Coding & AlgorithmsStacks & QueuesSimulation & State Machines
1
0
11 people solved
Apple logo
AppleGoogleGoldman Sachs

Also asked at Goldman Sachs, Spinny, Citadel

Medium
Software Engineer

Compute Knight Survival Probability after K Random Moves

Problem A knight starts at (row,column) on an n-by-n board with zero-based coordinates. At each move it chooses uniformly among all eight knight offse...

Coding & AlgorithmsDynamic ProgrammingProbability
1
0
12 people solved
Stripe logo
Stripe
Medium
Software Engineer

Process Split-Tender Payments, Expirations, Surcharges, and Refunds

Implement process_events(events, surcharge_rates). Events are chronological comma-separated strings. Pay for each charge with valid gift-card funds fi...

Coding & AlgorithmsSimulation & State MachinesPayments & Ledgers
1
0
21 people solved
Jan 1, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Design a pizza ordering system

Design the core object-oriented model for a pizza ordering system used by a small restaurant. The system should allow customers to: - browse a menu of...

Software Engineering FundamentalsLow-Level Design (OOP)
19
1
317 people solved
Oct 24, 2025
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Compute time to infect all cells

You are given an n × m grid representing people in a city. - Each cell is either infected (1) or healthy (0). - Two cells are neighbors if they share ...

Coding & AlgorithmsGrids & MatricesGraphs
154
2
1407 people solved
Oct 24, 2025
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