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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
Asana logo
Asana
Medium
Software Engineer

Design a 2048 Game

Design the object model and core game logic for a 2048 game on an N x N grid. This is an object-oriented design problem: focus on the classes, their r...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
98
0
653 people solved
Apr 2, 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
Salesforce logo
Salesforce
Medium
Software EngineerSenior+

Multi-tenant resource allocator: entity model, lifecycle state machine, optimistic locking

You are in the low-level design round of a senior backend loop for a multi-tenant SaaS platform. Design the core of a resource allocation module: cust...

Software Engineering FundamentalsLow-Level Design (OOP)Transactions & Isolation
1
0
21 people solved
Aug 8, 2026
Flipkart logo
FlipkartMastercard
Hard
Software Engineer

Quarantine the Region Threatening the Most Cells

Problem A binary isInfected grid has infected cells marked 1 and susceptible cells marked 0. Infection spreads nightly to side-adjacent susceptible ce...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
1
0
9 people solved
IBM logo
IBM
Medium
Business Intelligence Engineer

Last Time an Object Leaves a Table When Colliding Objects Swap Velocities

A table is the segment from position 0 (its left edge) to position table_length (its right edge). Object i starts at position[i] and moves at the cons...

Coding & AlgorithmsSimulation & State Machines
0
0
2 people solved
Nov 5, 2026
Ramp logo
Ramp
Hard
Software Engineer Locked

Build a Resilient Chain of Clue-Driven HTTP Requests

Design a robust client that follows clue-driven HTTP responses until it reaches a result. Work through retry budgets, deadlines, backoff, malformed pa...

Software Engineering FundamentalsAPI Integration & HTTP ClientsApplication Security
13
0
258 people solved
Jul 18, 2026
ByteDance logo
ByteDance
Medium
Software EngineerNew Grad

Incremental n x n Tic-Tac-Toe Game-Over Check in O(n), Then O(1) per Move

An n x n tic-tac-toe game is played by players 1 and 2. A player wins by occupying all n cells of a row, a column, the main diagonal (cells (i, i)) or...

Software Engineering FundamentalsSimulation & State MachinesData Structure Design
2
0
32 people solved
Sep 13, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Design and Implement an Object-Oriented Pizza Ordering System

Design and implement an object-oriented pizza ordering simulation in which customers build orders of pizzas with sizes, crusts and toppings, the syste...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
7
0
146 people solved
Sep 5, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer Locked

Simulate Infection Spread on a Grid

This question evaluates the ability to implement and reason about discrete-time, grid-based simulations with multi-state cells and neighbor-dependent ...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
27
1
311 people solved
May 11, 2026
A
Addepar
Easy
Software Engineer Locked

Implement a URL-Prefix Sliding-Window Alert Monitor

Design a URL-prefix alert monitor with a 10-minute window, exact error thresholds, trie or dictionary storage, event expiration, and clear alert seman...

Software Engineering FundamentalsData Structure DesignTrees
3
0
44 people solved
Aug 24, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Design crypto trading order control API

You are implementing part of a simple crypto trading system that manages client orders. Each order can be in one of several states: NEW, ACTIVE, PAUSE...

Coding & AlgorithmsSimulation & State MachinesData Structure Design
18
0
271 people solved
Dec 8, 2025
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Track Expiring GPU Credits

This question evaluates event-replay and time-window accounting skills, including temporal data structures, priority-based consumption, out-of-order e...

Coding & AlgorithmsData Structure DesignHeaps & Priority Queues
45
1
362 people solved
Mar 9, 2026
Capital One logo
Capital One
Easy
Software Engineer

Reduce Consecutive Digit Groups until the String Is Short Enough

Problem You are given a digit string s and an integer k. While s has more than k characters, perform a round: 1. Split s from left to right into conse...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings
0
0
12 people solved
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Fix a Corrupted Bootloader Instruction

This question evaluates the ability to simulate instruction-level program execution, reason about control flow and mutable program state (instruction ...

Coding & AlgorithmsSimulation & State Machines
36
1
268 people solved
May 19, 2026
Asana logo
Asana
Medium
Software Engineer Locked

Design a Testable 2048 Game Engine

Design a testable 2048 game engine with correct movement, merging, restart, and game-over behavior. Explore clean object boundaries, injected tile gen...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
18
0
160 people solved
Jul 2, 2026
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
OpenAI logo
OpenAI
Hard
Machine Learning Engineer Locked

Search Monster Battle Strategies

This question evaluates algorithmic problem-solving around deterministic simulation and state-space exploration, focusing on handling transient state ...

Coding & AlgorithmsDynamic ProgrammingSimulation & State Machines
49
1
385 people solved
Apr 8, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Select the Nearest Eligible Elevator

Select the nearest elevator eligible for a passenger based on current floor, movement state, and requested direction. Specify same-floor behavior, idl...

Coding & AlgorithmsSimulation & State Machines
47
0
338 people solved
May 12, 2026
Asana logo
Asana
Medium
Software Engineer Locked

Design a Layered ASCII Canvas Command Processor

Design a program for a fixed 10 x 6 ASCII canvas with layered filled rectangles. Make the API or object boundaries explicit, then cover invariants, ed...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
11
0
161 people solved
Aug 6, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer Locked

Implement a Referral Network

This question evaluates skills in modeling and manipulating directed acyclic graphs, implementing graph-based ranking metrics (reachability and flow c...

Coding & AlgorithmsGraphsData Structure Design
27
0
291 people solved
May 2, 2026
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