PracHub
QuestionsExperienceLearningGuidesInterview Prep
Visa Tools

Visa Tools

Visa Sponsors

Find employers with sponsorship filings

H-1B Odds Calculator

Explore your lottery selection odds

Visa Bulletin

Monthly green-card priority dates

PracHub

Master your tech interviews with 18,000+ real questions from top companies.

Product

  • Questions
  • Learning Tracks
  • Interview Guides
  • Resources
  • Green Card Tracker
  • Premium
  • Practice with AI agents
  • For Universities
  • Careers

Browse

  • By Company
  • By Role
  • By Category
  • Topic Hubs
  • Interview Experiences
  • SQL Questions
  • Blind 75
  • AI Coding Questions
  • Compare Platforms
  • Discord Community

Support

  • support@prachub.com

Legal

  • Privacy Policy
  • Terms of Service
  • About Us

© 2026 PracHub. All rights reserved.

Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
404
Companies
980
Updated
11.12.2026
404 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
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Compute infection spread time

This question evaluates understanding of grid-based graph traversal and propagation dynamics, testing competencies in breadth-first search concepts, s...

Coding & AlgorithmsGrids & MatricesStacks & Queues
13
0
198 people solved
Jan 9, 2026
Google logo
Google
Medium
Software EngineerNew Grad Locked

Search a Pattern Across the Leaf Text of a Binary Tree

Search for a pattern across the left-to-right concatenation of binary-tree leaf strings, including matches that cross leaf boundaries. This algorithm ...

Coding & AlgorithmsString AlgorithmsTrees
29
1
235 people solved
Jun 17, 2026
Google logo
Google
Medium
Software Engineer

Solve three coding interview problems

You are given three independent coding questions. 1) Decode an encoded string Given an encoded string s, decode it using the following rule: - Pattern...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
28
1
321 people solved
Oct 9, 2025
Rippling logo
Rippling
Medium
Software Engineer

Track article votes and last three flips

Problem Design an in-memory data structure for voting on articles. Users can vote on an article with either: - Thumbs up - Thumbs down - No vote (user...

Coding & AlgorithmsData Structure Design
47
0
385 people solved
Oct 17, 2025
Tesla logo
Tesla
Medium
Software Engineer

Solve classic array, graph, and parsing problems

Implement and analyze solutions to the following independent tasks: 1) Expression evaluator: Given a string s of digits, '+', '-', '*', '/', and space...

Coding & AlgorithmsArrays & StringsParsing & Interpreters
19
0
150 people solved
Aug 14, 2025
Google logo
Google
Medium
Software Engineer

Evaluate a Lisp-Style Expression Language with let, add and mult Scoping

Reported from a Google software engineering coding interview. Write an evaluator for a tiny Lisp-like expression language. Given one valid expression ...

Coding & AlgorithmsParsing & Interpreters
1
0
23 people solved
Mar 4, 2026
Two Sigma logo
Two Sigma
Medium
Machine Learning Engineer

Solve tree partition and IPO allocation

1) Tree partitioning for minimum difference: Given a rooted tree as an array parent of length n (parent[i] gives the parent of node i, and parent[root...

Coding & AlgorithmsTreesTrading Systems
11
0
155 people solved
Sep 6, 2025
Ramp logo
Ramp
Medium
Software EngineerIntern

Per-IP Sliding-Window Rate Limiter: Accept or Reject Each Request

A service receives a sequence of requests. Request i arrives at time timestamps[i] from the IP address ip_addresses[i]. Each IP address may have at mo...

Coding & AlgorithmsRate LimitingStacks & Queues
9
0
90 people solved
Jun 16, 2025
Google logo
Google
Medium
Software Engineer Locked

Implement text wrapping, waitlist, and intervals

This question evaluates skills in string parsing and word-wrapping logic, data-structure design for FIFO queue management and deletions, and interval ...

Coding & AlgorithmsData Structure DesignIntervals & Scheduling
32
0
255 people solved
Feb 12, 2026
Jump Trading logo
Jump Trading
Medium
Machine Learning Engineer

Solve stock trading with pattern rules

Question Given an array of daily stock prices and two pattern arrays: sellPattern and buyPattern, each consisting of 1 (price up) and -1 (price down) ...

Coding & AlgorithmsArrays & StringsSimulation & State Machines
14
0
136 people solved
Aug 4, 2025
Optiver logo
Optiver
Medium
Software Engineer Locked

Design a circular queue data structure

This question evaluates understanding of circular buffer data structures and the ability to implement fixed-capacity queue operations with O(1) time a...

Coding & AlgorithmsStacks & QueuesData Structure Design
16
0
142 people solved
Jan 13, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Answer multi-round grid and data-structure questions

You are given several independent interview-style coding questions. 1) Find first/last occurrence in sorted array (+ dynamic updates follow-ups) Given...

Coding & AlgorithmsBinary SearchData Structure Design
26
0
195 people solved
Oct 30, 2025
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Find shortest path in a maze grid

This question evaluates proficiency in graph traversal and shortest-path reasoning on grid-based data structures, testing skills in pathfinding, state...

Coding & AlgorithmsGrids & Matrices
11
0
154 people solved
Jan 21, 2026
Aurora logo
Aurora
Medium
Software Engineer

Compute streaming sliding-window minimums

Problem You are given an integer array nums of length n and an integer window size k. You scan nums from left to right (streaming). At each index i, y...

Coding & AlgorithmsStacks & QueuesTwo Pointers & Sliding Window
23
0
162 people solved
Feb 11, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Explain Backend Infrastructure Fundamentals

This question evaluates understanding of Kafka fundamentals—topics, partitions, consumer groups—plus rebalance mechanics and consumer-group message di...

Software Engineering FundamentalsMessaging & Event-DrivenConcurrency
10
0
83 people solved
Jun 3, 2026
Grammarly logo
Grammarly
Easy
Software Engineer

Implement string reduction and time map

In a coding interview, you are asked to solve two algorithm problems. 1. String reduction with adjacent duplicates - Basic version: Given a string ...

Coding & AlgorithmsStacks & QueuesData Structure Design
22
1
182 people solved
Nov 29, 2025
Balyasny logo
Balyasny
Hard
Software Engineer Locked

Schedule Dependent Tasks on a Bounded Thread Pool

Design a bounded multithreaded scheduler that releases tasks after prerequisite completion, handles failures, and preserves dependency and task-state ...

System DesignJob Scheduling & WorkflowsConcurrency
3
0
47 people solved
May 25, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Bloomberg, Microsoft

Medium
Software Engineer

Count Subarrays Whose Values Stay Within Two

Count Subarrays Whose Values Stay Within Two You are given a 0-indexed integer array nums. Call a subarray continuous if every pair of its elements di...

Coding & AlgorithmsTwo Pointers & Sliding WindowStacks & Queues
0
0
9 people solved
Chime logo
Chime
Medium
Software Engineer

Implement single-tab browser history navigation

Implement a BrowserSession for a single-tab browser. APIs: - BrowserSession(string homepage): Initialize with homepage; current page starts at homepag...

Coding & AlgorithmsData Structure Design
17
0
249 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Applied Scientist

Find shortest path in a grid with obstacles

You are given a 2D grid of size m x n representing a maze. Each cell in the grid is either empty (0) or blocked (1). You are also given two coordinate...

Coding & AlgorithmsGrids & Matrices
8
0
108 people solved
Dec 8, 2025
Previous1...151617...21Next
Popular Categories
SQLBlind 75
Daily Quest

Sign in to earn XP for every problem you solve.

Choose your next challenge

All learning

Blind 75

75 free coding problems to build your foundations, with hints, explanations, and a progress checklist.

Arrays · Graphs · Dynamic programming

Explore Blind 75

ML System Design

Work through the decisions behind machine learning systems, from data to serving.

Data · Models · Evaluation

Explore the course

System Design Interview

Practice reasoning about architecture, scale, and the tradeoffs that shape a system.

Architecture · Scale · Tradeoffs

Explore the course

Explore by company

All companies
  • Meta
  • Google
  • Amazon
  • Apple
  • Microsoft
  • Netflix
  • Capital One
  • TikTok
  • DoorDash
  • Uber
  • Coinbase
  • Airbnb
  • LinkedIn
  • Salesforce
  • Snapchat
  • Spotify
  • PayPal
  • Lyft
  • Pinterest
  • Anthropic
  • OpenAI
  • Databricks
  • Rippling
  • Jane Street

Explore by role

  • Data Scientist
  • Software Engineer
  • Machine Learning Engineer
  • Product Manager
  • Data Engineer
  • Data Analyst
  • Frontend Engineer
  • Backend Engineer
  • Site Reliability Engineer
  • Technical Program Manager

Explore by category

  • Blind 75
  • Coding & Algorithms
  • System Design
  • Machine Learning
  • ML System Design
  • SQL & Python
  • Analytics & Experimentation
  • Behavioral & Leadership
  • Statistics & Math
  • Product / Decision Making
  • Product Design & Strategy
  • SWE Fundamentals

Popular interview guides

  • Meta SWE
  • Meta DS
  • Meta PM
  • Google SWE
  • Google DS
  • Google MLE
  • Amazon SWE
  • Amazon DS
  • Amazon DE
  • Apple SWE
  • Apple MLE
  • Microsoft SWE
  • Microsoft DS
  • TikTok SWE
  • TikTok DS
  • Uber SWE
  • Uber DS
  • DoorDash SWE
  • DoorDash DS
  • Airbnb SWE
  • Airbnb DS
  • LinkedIn SWE
  • LinkedIn DS
  • Netflix SWE
  • Coinbase SWE
  • Capital One DS
  • OpenAI SWE
  • Anthropic SWE

Popular question categories

  • Blind 75
  • Meta Coding
  • Google System Design
  • Amazon Coding
  • Meta Analytics
  • Google ML
  • Amazon System Design
  • Capital One SQL
  • TikTok ML
  • Meta SQL
  • Uber Analytics
  • DoorDash Coding
  • Google Coding
  • Netflix System Design
  • Airbnb Analytics
  • LinkedIn SQL