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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
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
277 people solved
Dec 8, 2025
Google logo
GoogleBloombergAmazon

Also asked at Amazon, Meta, Microsoft, Snowflake, Nutanix, Waymo

Medium
Software Engineer

Minimize the Steepest Step on a Grid Route

Problem Travel from the top-left to the bottom-right cell of heights, moving only between side-adjacent cells. The effort of a route is the largest ab...

Coding & AlgorithmsGraphsGrids & Matrices
1
0
11 people solved
Disney logo
Disney
Medium
Product Manager

Product Concept to Shorten Time Disneyland Guests Spend in Ride Lines

You are a product manager at Disney. Design a product that cuts how long guests wait to get on rides at Disneyland. `hint What limits a line Before pr...

Product Design & StrategyProduct SenseOperations & Capacity
1
0
10 people solved
Oct 13, 2026
UiPath logo
UiPath
Medium
Machine Learning Engineer

Reduce overfitting and explain the mean squared error loss

A machine learning phone screen asks several short conceptual questions in quick succession. Two of them are reconstructed below: how to reduce overfi...

Machine LearningML Fundamentals
1
0
24 people solved
Sep 28, 2026
Bloomberg logo
BloombergGoogleMeta

Also asked at Meta, Amazon, Microsoft

Easy
Software Engineer

Check Whether Quarter-Turns Match a Target Matrix

Problem Two square binary matrices mat and target have the same dimensions. Return whether rotating mat by any number of ninety-degree turns, includin...

Coding & AlgorithmsGrids & Matrices
1
0
12 people solved
Amazon logo
AmazonDoorDashMeta

Also asked at Meta, Google, Visa, Microsoft, Bloomberg, TikTok, Uber, eBay

Medium
Software Engineer

Fill Rooms with Their Nearest Gate Distances

Problem Modify rooms in place. A cell is -1 for a wall, 0 for a gate, or 2147483647 for an empty room. Replace each reachable empty room by its shorte...

Coding & AlgorithmsGrids & Matrices
1
0
10 people solved
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg, IBM, TCS, Apple, Accenture, NVIDIA, AMD

Easy
Software Engineer

Return the Later Middle Node of a Singly Linked List

Problem Return the middle node pointer of the singly linked list beginning at head. If the list has two middle nodes, return the second one. Example o...

Coding & AlgorithmsLinked ListsTwo Pointers & Sliding Window
1
0
11 people solved
Vanta logo
Vanta
Medium
Software Engineer Locked

Implement Adjacent-Line Uniq

Implement adjacent-line uniq behavior without sorting, grouping only consecutive lines that share the selected exact or case-folded key. Support all, ...

Coding & Algorithms
15
0
200 people solved
Jul 13, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design an Online Chess Platform: Elo Matchmaking, WebSocket Moves, Game Clocks

Design an online chess platform: match players of similar Elo rating quickly, deliver moves in real time over WebSocket connections, and enforce fair ...

System DesignMultiplayer Game SystemsReal-Time Systems
4
0
53 people solved
Sep 20, 2026
Jane Street logo
Jane Street
Medium
Software EngineerIntern

Turning Interview Code into a Reusable Library or API

You have just finished implementing a small game engine during a coding interview: a board data structure for a two-player piece-dropping game, a func...

Software Engineering FundamentalsCode Quality & Maintainability
127
1
998 people solved
Nov 6, 2025
Robinhood logo
Robinhood
Medium
Frontend Engineer

Build a Weekly Calendar

Implement an interactive weekly calendar UI. Requirements: - Display a one-week calendar with 7 days. - The calendar should be divided into 1-hour tim...

Coding & Algorithms
5
0
98 people solved
Apr 5, 2026
Google logo
Google
Easy
Applied Scientist

Respond to a Safety Regression before Releasing a Model

A model is approaching release, but evaluation indicates that its safety performance has declined. How would you investigate the regression, decide wh...

Machine LearningAI Safety & AlignmentModel Evaluation
1
0
14 people solved
Sep 4, 2026
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
Amazon logo
Amazon
Medium
Software Engineer Locked

Fewest Edge Relocations to Make an Undirected Graph Connected

Given an undirected graph as a node count and an edge list, compute the fewest edge relocations needed to make every node reachable from every other, ...

Coding & AlgorithmsGraphs
8
1
71 people solved
Sep 5, 2026
Glean logo
Glean
Medium
Software Engineer

How a Tester Prioritizes and Organizes Work Under Project Deadline Pressure

In a hiring-manager behavioral round for a QA engineer role, the question was: when a project deadline puts you under pressure, how do you, as a teste...

Behavioral & LeadershipOwnership & ExecutionCommunication & Stakeholders
2
0
21 people solved
Sep 30, 2026
Mercor logo
Mercor
Medium
Software Engineer

Design an API to Deep-Copy a Dataset with Its Tasks, Model Responses and Grades

Your application stores datasets. Each dataset contains tasks, each task has model responses, and each response has grades. Design an API that copies ...

System DesignAPI DesignDistributed Transactions & Idempotency
5
0
104 people solved
May 31, 2026
Google logo
GoogleMeta
Medium
Software Engineer

Longest Ordered Subsequence With a Fixed Step

Problem Choose a subsequence of arr without reordering its elements. Every adjacent pair in the chosen sequence must increase by exactly difference, w...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
11 people solved
Infosys logo
InfosysAmazon
Medium
Software Engineer

Finish the Greatest Number of Partially Filled Bags

Problem Bag i holds rocks[i] rocks and has total capacity capacity[i]. Distribute up to additionalRocks new rocks among bags without exceeding capacit...

Coding & AlgorithmsGreedySorting
1
0
10 people solved
DoorDash logo
DoorDash
Medium
Data Scientist Locked

Diagnose a Decline in Order Acceptance Rate

Practice diagnosing a drop in order acceptance rate using funnel definitions, instrumentation checks, and mix-versus-within-segment decomposition. Con...

Analytics & ExperimentationMetric DiagnosticsMetrics & KPIs
22
0
185 people solved
Jul 19, 2026
Asana logo
Asana
Medium
Software Engineer Locked

Return the K Closest Points with Deterministic Ties

Implement k_closest(points, target, k). Work through the function contract, boundary cases, correctness argument, and time and space complexity expect...

Coding & Algorithms
7
0
101 people solved
Aug 6, 2026
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