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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
Google logo
Google
Medium
Software Engineer

Check Whether Two Ordered Sequences Can Be Merged

You are given two arrays of integer labels, a and b. The order of labels in each array gives ordering constraints: an earlier label must appear before...

Coding & AlgorithmsGraphs
14
0
108 people solved
Aug 26, 2026
Visa logo
Visa
Medium
Software EngineerSenior+

Count Space-Separated Words Made Only of Letters and Basic Punctuation

Count the words in a sentence under a strict definition of a word. Split the sentence on spaces into tokens, discard every token that contains a digit...

Coding & AlgorithmsArrays & Strings
7
0
75 people solved
Oct 2, 2026
Axq Capital logo
Axq Capital
Medium
Software Engineer Locked

Explain What a Neural Network Is and How It Learns

Explain what a neural network is: how units and layers turn weighted inputs into outputs, why non-linear activations are essential, and how the weight...

Machine LearningNeural Networks & TrainingML Fundamentals
2
0
35 people solved
Sep 8, 2026
MathWorks logo
MathWorks
Medium
Software EngineerNew Grad

Describe How You Assessed Code Quality and Added Tests

Describe a project where you assessed the quality of your code, implemented tests, or both. Explain what risks you were checking, how you chose the ch...

Behavioral & LeadershipTesting & Quality
0
0
7 people solved
Oct 30, 2026
Notion logo
Notion
Medium
Product Manager

Driving More Paid Seats Inside Existing Notion Customer Workspaces

As a product manager at Notion, how would you drive seat expansion: getting companies that already pay for Notion to add more paid seats? `hint Follow...

Product Design & StrategyGrowth & MonetizationUser Behavior & Funnels
2
0
24 people solved
Oct 7, 2026
HSBC logo
HSBC
Medium
Software Engineer

Multi-agent LLM chat service: subagent prompt design and WebSocket streaming framing

In a deep dive on an AI project from your resume, the interviewer goes down to implementation detail: how you wrote each subagent's prompt and how eac...

Software Engineering FundamentalsReal-Time SystemsAI Agents
0
0
6 people solved
Oct 26, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Design a rating and review system for individual food items

Design a system that lets customers rate and review individual food items, such as the dishes on a restaurant's menu, and shows those ratings and revi...

System DesignSystem Design FundamentalsCaching
1
0
9 people solved
Oct 28, 2026
Optiver logo
Optiver
Medium
Software Engineer Locked

Count Straight-Line Occurrences of a Word in a Letter Grid, Rows and Columns Only

Count how many times a target word appears in a grid of letters when read in a straight line along a row or down a column, with no turns and overlappi...

Coding & AlgorithmsGrids & Matrices
15
1
141 people solved
Sep 13, 2026
Cresta logo
Cresta
Medium
Software Engineer

Longest Overlap Between the End of One String and the Start of Another

Given two strings a and b, find the longest stretch at the end of a that is also the beginning of b. Return its length: the largest k such that the la...

Coding & AlgorithmsString Algorithms
8
0
56 people solved
Oct 6, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Accenture, Bloomberg, Microsoft, TCS, Yandex, LinkedIn, Remitly, Sprinklr, Zoho, Oracle, American Express, Zomato

Easy
Software Engineer

Check a One-to-One ASCII Character Substitution

Problem Determine whether two equal-length strings are isomorphic: one consistent character replacement maps s to t in order. Every occurrence of a so...

Coding & AlgorithmsArrays & Strings
2
0
22 people solved
DoorDash logo
DoorDash
Medium
Software Engineer

Improve Something That Was Already Working

Describe a time you made an already-working system or process better. Explain how you identified the opportunity, chose the scope, and determined that...

Behavioral & LeadershipInnovation & Simplification
1
0
12 people solved
Oct 24, 2026
Capital One logo
Capital One
Medium
Business Analyst Locked

Evaluate and Improve a Hypothetical Meal-Planning App

Evaluate a fully specified fictional meal-planning app without relying on external claims. Prioritize improvements, bound an AI substitution idea, and...

Product Design & Strategy
15
0
132 people solved
Aug 17, 2026
Crowdstrike logo
Crowdstrike
Medium
Backend EngineerSenior+

Implement a Risk-Score Priority DetectionStore With Put and GetNext in C++

Design and implement a data structure, DetectionStore, that stores security detections and hands them out by priority. A Detection has three fields: u...

Software Engineering FundamentalsData Structure DesignHeaps & Priority Queues
3
0
28 people solved
Sep 25, 2026
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Build a Running Late-Order Refund Workflow as Separate Python Services

Build a continuously running Python system of separate services that executes a small workflow graph in which late orders trigger refunds, then discus...

Software Engineering FundamentalsMicroservices & Service ArchitectureDistributed Transactions & Idempotency
32
0
204 people solved
Sep 7, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Overlay two binary trees into one by summing values at shared positions

You are given two binary trees. Merge them into one new binary tree by overlaying them, with the two roots aligned. Where both trees have a node at th...

Coding & AlgorithmsTrees
11
0
90 people solved
Sep 19, 2026
Rippling logo
Rippling
Medium
Software EngineerSenior+ Locked

Design Raw and Computed Spreadsheet Views

Design raw and computed spreadsheet views with formula parsing, dependency replacement, cache invalidation, atomic edits, and undo semantics.

Software Engineering FundamentalsLow-Level Design (OOP)Graphs
29
0
369 people solved
Sep 18, 2026
Virtu Financial logo
Virtu Financial
Hard
Quantitative Researcher

Maximum Total Height of Mountain-Shaped Towers Under Per-Plot Height Caps

You are planning n towers on plots 0 to n - 1 along a street. Each plot has a height cap: tower i must have an integer height heights[i] with 1 <= hei...

Coding & AlgorithmsGreedy
4
0
39 people solved
Sep 16, 2026
Google logo
Google
Medium
Software Engineer Locked

Minimum Number of Rooms to Schedule Overlapping Meetings

Given meetings as half-open time intervals, find the smallest number of rooms needed so that no two meetings sharing a room overlap. Tests interval re...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
42
1
333 people solved
Sep 7, 2026
Google logo
GoogleAmazonInfosys

Also asked at Infosys, LinkedIn, Meta, Bloomberg, TCS, Microsoft, Adobe, Deshaw, IBM, Morgan Stanley, Walmart Labs, Juspay, TikTok, Goldman Sachs, Siemens

Medium
Software Engineer

Maximize Products over Contiguous Nonempty Segments

Problem Return the largest product of any nonempty contiguous subarray. A single-element subarray has that element's value. Elements cannot be skipped...

Coding & AlgorithmsDynamic Programming
4
0
23 people solved
Capital One logo
Capital One
Medium
Software EngineerSenior+

Explain How AI Supports Your Engineering Work

Describe how you use AI in day-to-day engineering work and how it can improve your output. Give a concrete example involving coding or design, and exp...

Behavioral & LeadershipAI-Assisted Development
7
0
117 people solved
Aug 23, 2026
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