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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
Tesla logo
Tesla
Easy
Software Engineer Locked

Handle API Errors with Python Requests

Handle API failures with Python Requests by separating HTTP and JSON errors, bounding retries, honoring rate-limit delays, and preserving failure deta...

Software Engineering FundamentalsAPI Integration & HTTP ClientsDistributed Transactions & Idempotency
7
0
70 people solved
Sep 4, 2026
Google logo
GoogleMicrosoftAmazon

Also asked at Amazon, Turing, Bloomberg, Meta, Visa, Paytm

Medium
Software Engineer

Generate the One-Based Sequence of Ugly Numbers

Problem Return the nth positive integer whose prime factors are limited to 2, 3 and 5. The first such integer is 1. Preserve the original int nthUglyN...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
1
0
14 people solved
Google logo
Google
Medium
Data Scientist

Measure Bird Species Segregation

You are a data scientist analyzing bird observations from a forest. The ecology team wants to know whether different bird species are spatially segreg...

Statistics & MathHypothesis Testing
124
2
2255 people solved
May 28, 2026
Stripe logo
Stripe
Medium
Product Manager

Product Design: A Guided Tax-Filing Product Like TurboTax for Individual Filers

Design a tax-preparation product like TurboTax that walks individuals through preparing and filing their income tax returns. `hint Start from the shoe...

Product Design & StrategyProduct Sense
1
0
16 people solved
Sep 14, 2026
Google logo
Google
Medium
Software Engineer Locked

Find the Longest Non-Decreasing Subarray After One Replacement

Find the longest contiguous non-decreasing run obtainable after replacing at most one array element. The prompt permits any integer replacement or no ...

Coding & Algorithms
19
0
249 people solved
Aug 30, 2026
Citadel logo
Citadel
Medium
Software EngineerIntern Locked

Return a Valid Dependency Order for Named Tasks

Solve a named-task dependency graph with deterministic topological sorting and explicit cycle detection. Learn to include dependency-only tasks, dedup...

Coding & AlgorithmsGraphs
41
0
501 people solved
Aug 13, 2026
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Meta, Bloomberg, IBM, Accenture, Flipkart, EPAM Systems, Target, Visa, Salesforce, Wissen Technology

Medium
Software Engineer

Order Character Blocks by Their Frequencies

Order Character Blocks by Their Frequencies Given a string s, rearrange all of its characters so that characters occurring more often come before char...

Coding & AlgorithmsSortingArrays & Strings
0
0
13 people solved
Tradedesk logo
Tradedesk
Medium
Frontend Engineer Locked

Debug a Frontend Component That Shows Wrong API Results

A front-end debugging question in which a React component that fetches data sometimes shows results that do not match the current input, even though e...

Software Engineering FundamentalsDebuggingConcurrency
5
1
63 people solved
Sep 15, 2026
Affirm logo
Affirm
Medium
Software Engineer Locked

Analyze Returning Borrowers Across Two Days of Logs

Analyze two days of loan activity to find users who appear on both days and have at least two distinct loan types across their combined records. Retai...

Data Manipulation (SQL/Python)Data Cleaning & Wrangling
29
2
392 people solved
Jul 14, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Measure LRU Cache Hits and Misses for an Access Workload

Simulate an LRU cache with hit and miss counters, correct recency updates, bounded capacity, and explicit empty-workload behavior.

Coding & AlgorithmsData Structure Design
6
1
118 people solved
Sep 12, 2026
Microsoft logo
MicrosoftAmazonGoogle

Also asked at Google, Meta, Bloomberg

Easy
Software Engineer

Maximize the Sum of Pair Minima

Problem Partition the 2n elements of nums into n pairs, using every occurrence once. Return the greatest possible sum of the smaller value in each pai...

Coding & AlgorithmsGreedySorting
2
1
19 people solved
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Maximize Equal Array Length After Contiguous Sum Merges

Find the maximum length of equal arrays obtainable by merging adjacent positive values into their sums, or report that equality is impossible.

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
11
0
147 people solved
Sep 5, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Find a Distributed Mode Efficiently

Design an exact distributed algorithm for finding the mode of a multiset partitioned across workers without shipping every raw item. Quantify communic...

System DesignBatch & Stream Processing
36
0
593 people solved
Jul 8, 2026
Pinduoduo logo
Pinduoduo
Easy
Software Engineer

Height of the First Strictly Taller Building to the Right of Each Building

A row of buildings is given as their heights, listed from left to right. For each building, find the first building to its right that is strictly tall...

Coding & AlgorithmsStacks & Queues
0
0
6 people solved
Oct 30, 2026
Reddit logo
Reddit
Medium
Software Engineer Locked

Implement a Stateful Chatter Message Store

Design a stateful message store that appends ordered batches, saves current data, returns bounded neighborhoods, merges overlapping reads, and edits t...

Software Engineering FundamentalsData Structure DesignArrays & Strings
20
0
200 people solved
Jul 30, 2026
Snapchat logo
Snapchat
Hard
Machine Learning Engineer

What Happens When All Neural-Network Weights Start at Zero?

What Happens When All Neural-Network Weights Start at Zero? What happens if every weight in a neural network is initialized to zero? Explain why the a...

Machine LearningNeural Networks & Training
2
0
36 people solved
Sep 12, 2026
Meta logo
Meta
Medium
Data Scientist Locked

Calculate Daily Survey Response Rates by Country

Work through a PostgreSQL survey-analysis task that compares impressions and responses by date and country. It exercises careful joins, distinct-user ...

Data Manipulation (SQL/Python)SQL
52
9
620 people solved
Jul 6, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Debug a Python Job Scheduler: Failed Jobs Stuck in PENDING and Async Jobs Never Run

You are given an existing Python job scheduler repository and a set of bug reports. For each report, read the code, find the cause, fix it, and write ...

Software Engineering FundamentalsDebuggingConcurrency
6
0
58 people solved
Jul 29, 2026
Snapchat logo
Snapchat
Medium
Software Engineer Locked

Remove the Maximum Number of Connected Stones

Find the maximum stones removable when each move requires another remaining stone in the same row or column. The prompt defines unique coordinates, tr...

Coding & Algorithms
10
0
93 people solved
Aug 19, 2026
Virtu Financial logo
Virtu Financial
Medium
Quantitative TraderNew Grad

Fewest Balance-Scale Weighings to Find the One Ball With a Different Weight

You have a set of balls that look identical, and exactly one of them has a different weight from the others. You also have a two-pan balance that only...

Statistics & MathPuzzles & BrainteasersMath & Number Theory
0
0
5 people solved
Oct 21, 2026
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