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
435
Companies
980
Updated
11.12.2026
435 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
Bloomberg logo
BloombergGoogleMeta

Also asked at Meta, Microsoft, Amazon, Uber, TCS, Yandex, Instacart, Whatnot, Infosys, Adobe, Accenture, Ozon, Deutsche Bank, CrowdStrike

Easy
Software Engineer

Square a Sorted Array and Return the Squares in Order

Problem Given nums in nondecreasing order, return every value squared, also in nondecreasing order. Negative values may cause squared values to appear...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
0
0
13 people solved
Amazon logo
AmazonGoogleTCS

Also asked at TCS, Microsoft, Bloomberg, LinkedIn, Meta, PhonePe, Flipkart

Hard
Software Engineer

Find the Narrowest Interval Meeting Every Sorted List

Problem Return [a,b] containing at least one element from every sorted list in nums. Minimize b-a, breaking equal-width ties by the smaller a. Endpoin...

Coding & AlgorithmsHeaps & Priority QueuesGreedy
1
0
14 people solved
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+

Find the K Values Closest to a Target in a Binary Search Tree

A binary search tree holds distinct integer values: for every node, every value in its left subtree is smaller than the node's value and every value i...

Coding & AlgorithmsTrees
7
0
51 people solved
Aug 15, 2026
Amazon logo
AmazonLyftMicrosoft

Also asked at Microsoft, Google, Meta, Bloomberg, Infosys, Snowflake, LinkedIn, TikTok, Adobe, Oracle, IBM, Snapchat, Salesforce, Goldman Sachs, SoFi

Hard
Software Engineer

Find the Shortest Substring Covering Required Characters

Problem Find the shortest contiguous substring of text that contains every character required by needed, respecting how many times each character occu...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
0
0
13 people solved
Salesforce logo
Salesforce
Medium
Software EngineerSenior+

Solve Two OA Coding Problems

The online assessment included two coding problems: 1. In-place character run compression - You are given an array of characters. - Compress con...

Coding & AlgorithmsGreedyArrays & Strings
67
0
453 people solved
Apr 5, 2026
Meta logo
MetaYandexAmazon

Also asked at Amazon, Verkada, Oscar, Google, Microsoft, Mixpanel, Bloomberg, Apple, Nuro

Medium
Software Engineer

Intersect Two Sorted Lists of Disjoint Closed Intervals

Problem Each input list contains sorted, pairwise disjoint closed intervals. Return all nonempty intersections between the two lists, in their natural...

Coding & AlgorithmsIntervals & SchedulingTwo Pointers & Sliding Window
1
0
23 people solved
Bloomberg logo
BloombergStripeAmazon

Also asked at Amazon, Google, Microsoft, Oracle

Medium
Software Engineer

Transactions Flagged by Amount or Cross-City Timing

Problem Each transaction string has the form name,time,amount,city. Flag a transaction if its amount exceeds 1000 dollars, or if another transaction w...

Coding & AlgorithmsArrays & StringsParsing & Interpreters
1
0
19 people solved
Headlands logo
Headlands
Medium
Data Scientist Locked

C++ Sliding-Window Mean of a Float Array With Inf, -Inf and NaN Handling

Compute the mean of every fixed-size sliding window over a C++ float array that may contain inf, -inf and NaN. It tests IEEE-754 semantics for special...

Software Engineering FundamentalsTwo Pointers & Sliding WindowProgramming Languages
5
0
54 people solved
Aug 30, 2026
Waymo logo
Waymo
Medium
Software Engineer Locked

Sort the Results of Applying a Quadratic Function to a Sorted Array

Apply the quadratic function axx + b*x + c to every element of a sorted integer array and return the results in sorted order, where a may be negative ...

Coding & AlgorithmsTwo Pointers & Sliding Window
3
0
60 people solved
Sep 10, 2026
Amazon logo
AmazonInfosysGoogle

Also asked at Google, Meta, EPAM Systems, Bloomberg, Yandex, Microsoft, Goldman Sachs, Tekion, Deshaw, LinkedIn, IBM, Citadel, Motive, Adobe, TikTok, Salesforce, Nutanix

Medium
Software Engineer

Find the Longest Binary Window Requiring at Most K Zero Flips

Problem You may change at most k zero entries of binary nums to1. Return the greatest length of a consecutive run of ones achievable after those chang...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
0
0
13 people solved
Google logo
GoogleAmazonMeta

Also asked at Meta, Apple, Wells Fargo, Infosys, Revolut, Meesho, Squarepoint, Salesforce, Bloomberg, Microsoft, Airbnb, Samsung, Oracle, TCS, Tekion, Agoda, Yatra

Medium
Software Engineer

Count Segments with a Small Product

Problem Count the contiguous nonempty subarrays of nums whose element product is strictly smaller than k. `cpp class Solution { public: int numSub...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
16 people solved
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, Meta, Databricks, Roblox, Yandex

Easy
Software Engineer

Maintain an Inclusive Three-Second Request Window

Problem Implement RecentCounter() and ping(t). A ping adds a request at integer millisecond time t and returns the number of recorded requests in the ...

Coding & AlgorithmsData Structure DesignStacks & Queues
2
0
17 people solved
Decagon logo
Decagon
Easy
Software Engineer

Implement a CSAT Sliding Window Tracker

Design and implement a class that tracks customer satisfaction scores over a sliding time window. A customer support conversation has: - conversation_...

Coding & AlgorithmsData Structure DesignStacks & Queues
36
0
386 people solved
Apr 1, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, TCS, Microsoft, Qualcomm, Apple, Goldman Sachs, EPAM Systems, Wipro, NVIDIA, Accenture, HCL

Easy
Software Engineer

Reverse the Original Printable-Character Array In Place

Problem Reverse s by modifying its original character array in place, using O(1) extra memory. The function returns void. Preserve every printable ASC...

Coding & AlgorithmsTwo Pointers & Sliding Window
1
0
14 people solved
Optiver logo
Optiver
Medium
Software Engineer Locked

Fastest Rolling One-Kilometer Average Speed from 5-Second Distance Samples

Given the meters a runner covers in each 5-second interval, find the fastest average speed over a rolling one-kilometer stretch, defined as the shorte...

Coding & AlgorithmsTwo Pointers & Sliding Window
8
0
110 people solved
Sep 13, 2026
Google logo
GoogleMetaAmazon

Also asked at Amazon, Microsoft, Bloomberg, IBM, Walmart Labs, Sigmoid, Snowflake

Medium
Software Engineer

Minimize Two-Person Boats under a Weight Limit

Problem Every person in people must board a boat. Each boat carries at most two people, and their combined weight cannot exceed limit. There is no lim...

Coding & AlgorithmsGreedyTwo Pointers & Sliding Window
1
0
16 people solved
Pinterest logo
Pinterest
Medium
Software Engineer

Track a User's Top Trending Viewed Pin Within a Sliding Time Window

On a visual discovery platform, every Pin has a trending score. Build a per-user feature that keeps track of the Pins a user has viewed within a recen...

Software Engineering FundamentalsData Structure DesignHeaps & Priority Queues
2
0
30 people solved
Jul 13, 2026
Asana logo
Asana
Medium
Software Engineer

Design a 2048 Game

Design the object model and core game logic for a 2048 game on an N x N grid. This is an object-oriented design problem: focus on the classes, their r...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
98
0
653 people solved
Apr 2, 2026
Oracle logo
Oracle
Medium
Software Engineer

Rearrange an Integer Array into Its Next Lexicographic Arrangement

Given an array of integers nums, rearrange it into its next arrangement: the smallest arrangement of the same values that is lexicographically greater...

Coding & AlgorithmsArrays & Strings
3
0
38 people solved
Sep 14, 2026
Yandex logo
YandexAdobeRoblox

Also asked at Roblox, VK, Amazon, Google, Snowflake, Samsung, Apple

Medium
Software Engineer

Choose an Empty Seat with the Best Nearest-Neighbor Distance

Problem seats marks occupied positions with 1 and empty positions with 0. Choose an empty position to maximize its index distance to the closest occup...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
11 people solved
Previous1...678...22Next
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