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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
Microsoft logo
Microsoft
Medium
Software EngineerSenior+ Locked

Find Unique Zero-Sum Triplets

Find unique zero-sum triplets with distinct indices, deterministic ordering, careful duplicate suppression, and explicit time and space analysis.

Coding & AlgorithmsTwo Pointers & Sliding WindowSorting
5
0
100 people solved
Sep 10, 2026
Anthropic logo
Anthropic
Hard
Software EngineerSenior+

Why Join an AI Safety-Focused Lab, and What Is Your View on AI Safety?

You are interviewing for a senior software engineering role at Anthropic, an AI company that places AI safety at the center of its public mission. Bef...

Behavioral & LeadershipMotivation & FitEthics & Responsibility
3
0
30 people solved
Jul 26, 2026
Squarepoint logo
Squarepoint
Medium
Quantitative Researcher Locked

Shortest Subarray with at Least K Distinct Values

Find the shortest contiguous subarray containing at least k distinct values. Practice sliding-window invariants, frequency maps, and linear-time minim...

Coding & Algorithms
26
0
281 people solved
Aug 29, 2026
Google logo
GoogleMetaAmazon

Also asked at Amazon, Bloomberg, Microsoft, Arista Networks, TCS, Apple

Easy
Software Engineer

Remove Every Matching Node from a Linked Chain

Problem Remove every node whose value equals val from a singly linked list, and return the new head. Keep the remaining nodes in their existing list o...

Coding & AlgorithmsLinked Lists
0
0
12 people solved
Databricks logo
Databricks
Hard
Software Engineer Locked

Design a Key-Value Store with Hit Counting

Design an in-memory key-value store whose successful reads feed a configurable per-key hit counter over time windows. Clarify counting semantics, then...

Software Engineering FundamentalsData Structure DesignStacks & Queues
18
0
214 people solved
Jul 25, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Implement A Contiguous Memory Allocator With Free-Block Coalescing

Review a contiguous memory allocator coding prompt with malloc, free, first-fit allocation, block coalescing, and a best-fit follow-up. The interview ...

Coding & AlgorithmsData Structure DesignMemory Management
51
1
388 people solved
Jun 5, 2026
PhonePe logo
PhonePeGoogleAmazon

Also asked at Amazon, Media.net, Meta, Microsoft, Bloomberg, Snowflake, Snapchat

Medium
Software Engineer

Maximize Stone Removals Using Shared Rows or Columns

Problem Each pair in stones is a distinct occupied integer coordinate. You may remove a stone only while another remaining stone shares its row or its...

Coding & AlgorithmsGraphs
0
0
10 people solved
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Explain How You Know a Professional Referrer

Prepare a concise, de-identified explanation of a professional referral grounded in shared work and independently demonstrated qualifications.

Behavioral & Leadership
14
0
179 people solved
Aug 28, 2026
ByteDance logo
ByteDance
Medium
Data Scientist

Evaluate an In-Platform Ad Video Editor: Experiment Design and 2% Adoption

An ads platform's self-serve ads manager lets advertisers upload video creatives while they build a campaign. Today, when an uploaded video has a prob...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
0
0
3 people solved
Oct 29, 2026
HelloFresh logo
HelloFresh
Medium
Product Manager

Getting work done under dual reporting lines as a product manager

As a product manager, how do you work effectively in a matrix organization, where you and the people around you answer to more than one line of manage...

Behavioral & LeadershipLeadership & InfluenceCommunication & Stakeholders
0
0
6 people solved
Oct 10, 2026
NVIDIA logo
NVIDIA
Medium
Software EngineerSenior+ Locked

Reason About Endianness, Ring Buffers, and Stack Behavior in Firmware

Review three firmware fundamentals together: portable byte-order decoding, fixed-capacity ring-buffer invariants, and bounded call-stack behavior. Dis...

Software Engineering Fundamentals
8
0
128 people solved
Jul 7, 2026
Tesla logo
Tesla
Hard
Software EngineerSenior+ Locked

Senior Project Deep Dive: Design Rationale, Your Most Complex Project, Questions for the HM

A senior infrastructure loop probes past work in a resume deep dive on design rationale and rejected alternatives, then the hiring manager asks for yo...

Behavioral & LeadershipProject Deep Dive
7
0
62 people solved
Sep 7, 2026
Lyft logo
Lyft
Medium
Data Scientist Locked

Investigate a 7% Monthly Active Riders Drop and a 20% Wait-Time Increase

This question evaluates a data scientist's ability to diagnose simultaneous metric regressions in a marketplace product using structured root-cause an...

Analytics & ExperimentationMetric DiagnosticsSegmentation & Cohort Analysis
48
0
364 people solved
Jun 6, 2026
Mercor logo
Mercor
Hard
Software Engineer Locked

Compare Merge Sort with Factorial and Randomized Inefficient Sorts

Explain merge sort, adaptive merging, permutation sorting, and random-shuffle sorting while distinguishing expected complexity from worst-case guarant...

Software Engineering FundamentalsSorting
5
0
84 people solved
Sep 3, 2026
Google logo
Google
Medium
Product Manager

Launch Decision for a More Accurate Model That Is Twice as Slow

You are the product manager for a feature powered by a machine-learning model. The team brings you a candidate model that is 20% more accurate than th...

Product / Decision MakingAI Product ManagementExperiment Design (A/B Testing)
0
0
10 people solved
Oct 7, 2026
Plaid logo
Plaid
Medium
Machine Learning Engineer

Design a Fraud Detection System

Design a machine learning system for a fintech data-connectivity platform such as Plaid that detects fraudulent activity across the user lifecycle — b...

ML System Design
30
0
300 people solved
Apr 30, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Grammarly, Bloomberg, Microsoft, LinkedIn

Medium
Software Engineer

Find Distinct Repeated Ten-Base DNA Windows

Problem Return every distinct length-10 substring that occurs more than once in the DNA string s. Overlapping occurrences count. Include a repeated se...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
0
0
9 people solved
Capital One logo
Capital One
Medium
Software Engineer

Sorted Sums of Absolute Differences Over All Cyclic Shifts of an Array

You are given two integer arrays nums1 and nums2 of the same length n. For each shift t from 0 to n - 1, rotate nums1 cyclically by t positions and ad...

Coding & AlgorithmsArrays & Strings
2
0
29 people solved
Aug 4, 2026
Snapchat logo
Snapchat
Hard
Machine Learning Engineer Locked

Render an Organization Chart and Find Skip-Level Pairs

Build and render an organization tree with ordered indentation, infer its root, and return exactly two-level manager-descendant pairs.

Coding & AlgorithmsTrees
9
0
86 people solved
Sep 9, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Bloomberg, Microsoft

Medium
Software Engineer

Decide Whether an Integer Is a Sum of Two Squares

Problem Return whether nonnegative c equals a × a + b × b for some integers a,b. Zero is allowed for either integer. `cpp class Solution { public: ...

Coding & AlgorithmsMath & Number TheoryTwo Pointers & Sliding Window
1
0
11 people solved
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