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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
333
Companies
980
Updated
11.06.2026
333 Questions 980 Companies11.06.2026
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 EngineerIntern

Longest Substring That Occurs at Least Twice, Overlaps Allowed

Given a string s, find the longest substring that occurs in s at least twice. The occurrences may overlap. Return that substring, or the empty string ...

Coding & AlgorithmsString AlgorithmsBinary Search
25
0
455 people solved
Oct 25, 2026
Airbnb logo
Airbnb
Hard
Software Engineer

Design a Banking Ledger with Accepted Transfers and Account Merges

Design a banking simulation in four stages: account creation, deposits and payments; activity ranking; transfers that reserve funds until accepted or ...

Software Engineering FundamentalsSimulation & State MachinesLow-Level Design (OOP)
13
0
163 people solved
Nov 5, 2026
Stripe logo
Stripe
Hard
Software EngineerNew Grad

Split-Tender Payment Events with Gift Card Expiry, ZIP Surcharges and Refunds

A retail customer often pays for one purchase with several payment methods, for example covering a 100-dollar purchase with a 40-dollar gift card plus...

Coding & AlgorithmsSimulation & State Machines
123
0
1367 people solved
Oct 10, 2026
Google logo
Google
Medium
Software EngineerSenior+

Map Uniform Draws to Indices for Weighted Random Selection

An index of a list of positive integer weights is to be chosen at random, with each index chosen with probability proportional to its weight. In an in...

Coding & AlgorithmsBinary SearchArrays & Strings
21
0
194 people solved
Oct 24, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg, Rippling, Infosys, Goldman Sachs, SpaceX, TCS, Zoho, eBay, Udemy, Apple, Oracle, Yandex, Cognizant, Walmart Labs, Accenture, Deshaw, Uber, Autodesk

Hard
Software Engineer

Locate the Middle Value Across Two Sorted Inputs

Problem Two integer arrays, first and second, are already sorted in nondecreasing order. Return the median of the values in their combined multiset, r...

Coding & AlgorithmsBinary Search
21
0
215 people solved
DoorDash logo
DoorDash
Medium
Software Engineer

Explain Consistent Hashing with Routing Pseudocode

Explain consistent hashing and sketch pseudocode for routing a key to a server. Show how the routing rule behaves when the lookup reaches the end of t...

Software Engineering FundamentalsPartitioning & Consistent Hashing
8
0
56 people solved
Nov 4, 2026
Roblox logo
Roblox
Medium
Software EngineerNew Grad

Number Line Obstacles: Check Whether a Centered Block Can Be Built

You are working on an infinite integer number line that starts with no obstacles. Process a sequence of operations of two types: - [1, x] builds an ob...

Coding & AlgorithmsBinary Search
58
1
516 people solved
Oct 3, 2026
Rippling logo
Rippling
Medium
Software EngineerSenior+

Design Historical Driver Rates and Constant-Time Delivery Cost Totals

Design a Python model for a food-delivery company using Unix timestamps and dictionaries for driver rates and delivery records. Support rate updates w...

Software Engineering FundamentalsLow-Level Design (OOP)Data Structure Design
6
0
53 people solved
Oct 30, 2026
Optiver logo
Optiver
Medium
Software Engineer

Fastest 1000 Meters: Max Average Speed from 5-Second Distance Splits

A runner's workout is recorded as a list of integers distances, where distances[i] is the number of meters covered during the i-th consecutive 5-secon...

Coding & AlgorithmsTwo Pointers & Sliding Window
46
4
597 people solved
Sep 26, 2026
Google logo
Google
Medium
Software EngineerSenior+

Median of All Values Across Several Sorted Integer Arrays

You are given several integer arrays, each sorted in non-decreasing order. Return the median of all of their elements taken together. The question was...

Coding & AlgorithmsBinary SearchHeaps & Priority Queues
33
2
482 people solved
Oct 6, 2026
Amazon logo
Amazon
Medium
Software Engineer

Minimize Grid Inconvenience by Adding One Delivery Center

A binary grid represents delivery coverage: 1 marks a delivery center and 0 marks an ordinary location. The distance between cells (r1, c1) and (r2, c...

Coding & AlgorithmsGrids & MatricesBinary Search
39
0
513 people solved
Sep 4, 2026
Stripe logo
Stripe
Hard
Software Engineer

Deployment Window Scheduler: Allowed Minus Freeze Windows, Time Zones, Filters

Implement a scheduler that computes when a service may be deployed. Time is measured as minute_of_week, an integer in [0, 10079]; a week has 10080 min...

Software Engineering FundamentalsIntervals & Scheduling
82
2
755 people solved
Sep 11, 2026
LinkedIn logo
LinkedIn
Medium
Machine Learning EngineerSenior+

Weighted Die Roller from Per-Face Probabilities, with Corner Cases

Implement rolling a biased die. The die has k faces, and you are given the probability of each face as a list probs: face i should come up with probab...

Software Engineering FundamentalsMath & Number TheoryBinary Search
6
1
44 people solved
Oct 23, 2026
Medium
Software Engineer

Versioned Key-Value Store with Out-of-Order Writes, Snapshots and Read Freezing

You are building an in-memory key-value store that a distributed training job uses to checkpoint model metadata. Every key keeps a history of values, ...

Software Engineering FundamentalsData Structure DesignBinary Search
3
0
29 people solved
Oct 30, 2026
Microsoft logo
Microsoft
Medium
Software EngineerNew Grad

Maximum Team Size with an Overlapping Hub

There are n employees. Employee i works during the closed interval [startTime[i], endTime[i]]. Two employees can interact if their working intervals o...

Coding & AlgorithmsIntervals & SchedulingSorting
5
0
57 people solved
Oct 15, 2026
Stripe logo
Stripe
Medium
Software Engineer

Match Payments to Invoices by Memo ID, Exact Amount, then Amount Tolerance

You are given one payment record and a list of invoice records, each encoded as a string. Parse them, find the invoice the payment should be applied t...

Software Engineering FundamentalsCode Quality & MaintainabilityPayments & Ledgers
41
0
373 people solved
Sep 24, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Timestamped Parcel Attribute Store With Compare-and-Set, Prefix Listing and TTL

Implement an in-memory store of parcels. Each parcel is identified by a parcel ID and can hold many attributes with different names, each attribute be...

Software Engineering FundamentalsData Structure Design
12
0
161 people solved
Oct 2, 2026
IBM logo
IBM
Medium
Software Engineer

Count Index Triplets Whose Max Minus Min Is at Most d

You are given an integer array arr and a non-negative integer d. A triplet is a choice of three distinct positions i < j < k of arr. Its spread is the...

Coding & AlgorithmsTwo Pointers & Sliding WindowSorting
56
0
488 people solved
Sep 30, 2026
Citadel logo
Citadel
Medium
Software Engineer

Constant-Time Ticker Portfolio With Uniform, Weighted and Streaming Random Picks

Design and implement a portfolio of stock ticker symbols (strings such as AAPL) that supports three operations, each in constant time: - add(ticker): ...

Software Engineering FundamentalsData Structure DesignMath & Number Theory
0
2
11 people solved
Nov 6, 2026
Valon logo
Valon
Medium
Software Engineer

Loan Ledger: Fee-First Payments and Out-of-Order Event Processing

You are implementing a simplified loan-accounting component. Loan accounting tracks the state of a loan over time, and this version tracks only two fi...

Software Engineering FundamentalsData Structure Design
28
0
258 people solved
Sep 24, 2026
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