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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
Amazon logo
AmazonGoogleLinkedIn

Also asked at LinkedIn, Microsoft, Meta, Zeta Global

Medium
Software Engineer

Divide All Values into Equal-Sum Groups

Problem Decide whether every element of nums can be assigned to exactly k nonempty groups so that all group sums agree. Each array position must be us...

Coding & AlgorithmsBacktracking & RecursionDynamic Programming
1
0
9 people solved
Two Sigma logo
Two Sigma
Medium
Software Engineer

Implement a Hash Map with Separate Chaining and Resizing

Implement a hash map data structure from scratch, without using any built-in hash table types from your language's standard library (no dict, HashMap,...

Coding & Algorithms
16
0
147 people solved
Aug 26, 2025
Citadel logo
Citadel
Medium
Software Engineer

Maximize Earnings by Adding Working Days

Implement maximum_earnings(schedule, k, pay, bonus). schedule is a string of 0 and 1, where 1 means a working day and 0 means a day off. You may chang...

Coding & AlgorithmsGreedyArrays & Strings
9
0
85 people solved
Mar 10, 2026
Stripe logo
Stripe
Medium
Software Engineer Locked

Debug an Asynchronous SDK Race Condition with a Customer

Diagnose an intermittent SDK race that returns data from a previous asynchronous request. Trace request-scoped state and completion order, define canc...

Software Engineering Fundamentals
15
0
125 people solved
Jun 9, 2026
Nike logo
Nike
Medium
Software Engineer Locked

Write Pseudocode for Embedding Creation and Vector Search

Write production-oriented pseudocode for batched document embedding and vector upserts plus filtered similarity search, including chunk identity, idem...

Machine Learning
3
0
30 people solved
Aug 4, 2026
Amazon logo
AmazonBloombergMicrosoft

Also asked at Microsoft, Google, Meta, Nutanix

Medium
Software Engineer

Detect a Strictly Increasing Three-Index Pattern

Problem Return whether there exist indices i<j<k with nums[i]<nums[j]<nums[k]. Only existence is returned, not the triple itself. `cpp bool increasing...

Coding & AlgorithmsGreedy
1
0
10 people solved
Akuna Capital logo
Akuna Capital
Hard
Software Engineer

Design an order-matching engine

In-Memory Limit Order-Matching Engine (Limit Order Book) Context Design and implement an in-memory, single-instrument limit order book that supports l...

System Design
57
0
536 people solved
Sep 6, 2025
Shopify logo
Shopify
Medium
Software Engineer AI

Implement an In-Memory File System

Implement an In-Memory File System The source reports an in-memory file-system exercise but not its exact error serialization or current-directory rem...

Coding & Algorithms
11
0
138 people solved
Apr 28, 2026
Palantir logo
Palantir
Medium
Software Engineer

Discuss logistics and compensation

Discuss logistics and compensation Behavioral Screen: Logistics and Preferences Context: You are interviewing for a Software Engineer role. The interv...

Behavioral & Leadership
28
3
328 people solved
Jul 26, 2025
OpenAI logo
OpenAI
Medium
Software Engineer

Implement map serialization and deserialization

You are given an in-memory map (dictionary) from strings to strings. Implement two functions: - string serialize(map<string, string> m) - map<string, ...

Coding & AlgorithmsParsing & Interpreters
96
0
758 people solved
Dec 1, 2025
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Find Minimum Compatible Version

This question evaluates binary search, monotonic predicates, careful version ordering, and cost-aware optimization of expensive compatibility checks. ...

Coding & AlgorithmsBinary Search
18
1
254 people solved
Mar 9, 2026
Airbnb logo
Airbnb
Medium
Machine Learning Engineer Locked

Minimum Canisters to Top Up an Exact Target

This question evaluates a candidate's grasp of dynamic programming, specifically the unbounded knapsack (coin change) pattern for finding the minimum ...

Coding & Algorithms
11
2
130 people solved
Jun 22, 2026
LinkedIn logo
LinkedIn
Easy
Software EngineerSenior+ Locked

Design O(1) Randomized Multiset

This question evaluates data-structure design skills, understanding of hashing and randomization for uniform sampling, handling of duplicate elements,...

Coding & AlgorithmsData Structure DesignArrays & Strings
17
0
165 people solved
Apr 6, 2026
Jane Street logo
Jane Street
Medium
Quantitative Trader

Solve queue switch and coin change puzzles

This entry contains two separate interview-style quantitative/algorithmic questions. --- 1. Queue switching decision problem You are standing in a sin...

Coding & AlgorithmsPuzzles & BrainteasersDynamic Programming
53
0
467 people solved
Oct 14, 2025
Dropbox logo
Dropbox
Medium
Product Manager

Dropbox Product Sense: Applying AI to Speed Up File Retrieval

As a product manager at Dropbox, how would you use AI to help people get to the files they need more quickly? Choose the users you would build for, ex...

Product Design & StrategyAI Product ManagementMetrics & KPIs
0
0
8 people solved
Aug 24, 2026
Medium logo
Medium
Medium
Product Manager

Medium Five-Year Revenue Plan: Growth Math, Membership Levers and New Revenue Lines

You are a product manager at Medium, the online publishing platform where readers pay for a membership and writers earn money from their stories. Lay ...

Product Design & StrategyGrowth & MonetizationBusiness Case Analysis
1
0
10 people solved
Oct 15, 2026
Stripe logo
Stripe
Medium
Software Engineer

Implement account scheduler with locking and LRU

Design a class AccountScheduler that manages the time-based availability of a fixed set of account IDs. Initialization You are given: - accounts: a li...

Coding & Algorithms
24
1
190 people solved
Dec 8, 2025
Anthropic logo
Anthropic
Medium
Software Engineer

Implement a Least-Recently-Used Cache

Design and implement an in-memory least-recently-used cache. Requirements: - The cache is initialized with a positive integer capacity. - Implement ge...

Coding & Algorithms
5
0
78 people solved
Apr 19, 2026
Optiver logo
Optiver
Medium
Quantitative Trader

Quant Trading Game: Expected-Value Betting and Market Making on Coins, Dice, and Cards

Quant Trading Game: Expected-Value Betting and Market Making on Coins, Dice, and Cards You are playing a live, 30-minute trading game against the inte...

Machine Learning
12
0
162 people solved
Jul 25, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Diagnose Cold-Food Deliveries and Make a Launch Decision

You are the data scientist for a food-delivery marketplace. Customers are reporting that some orders arrive cold. The product team proposes an interve...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
23
0
158 people solved
May 7, 2026
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