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
LinkedIn logo
LinkedIn
Easy
Software Engineer AI Locked

Debug Queues and Solve Arrays

This multi-part question evaluates competencies in data structures (heap invariants and in-place array manipulation), concurrent programming (designin...

Coding & AlgorithmsHeaps & Priority QueuesArrays & Strings
19
0
259 people solved
Mar 10, 2026
PhonePe logo
PhonePeAdobeMicrosoft

Also asked at Microsoft, Uber, Google, Meesho, MathWorks, Amazon, Morgan Stanley, Meta

Hard
Software Engineer

Count Segments Whose Exact Minimum and Maximum Match Two Bounds

Problem Count nonempty contiguous subarrays of nums whose minimum is exactly minK and whose maximum is exactly maxK. Return the number of index interv...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
11 people solved
Amazon logo
AmazonMetaGoogle

Also asked at Google, Microsoft, Bloomberg, Generalmotors

Hard
Software Engineer

Choose Three Disjoint Equal-Length Windows with Lexicographic Ties

Problem Choose three nonoverlapping length-k contiguous subarrays of nums maximizing their combined sum. Return their starting indices in increasing o...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
18 people solved
Citadel logo
Citadel
Medium
Software Engineer Locked

Minimize Changes to Make Every Password Block Palindromic

Return the minimum character changes needed so every fixed-length block in a lowercase password becomes a palindrome while block boundaries remain unc...

Coding & AlgorithmsTwo Pointers & Sliding Window
15
3
283 people solved
Aug 7, 2026
Google logo
Google
Easy
Software Engineer

Shortest Distance Between Two Words, Then a Word-List Class With an Anagram Check

You are given a list of words, which may contain repeats, and two words word1 and word2. Return the smallest distance between an occurrence of word1 a...

Software Engineering FundamentalsArrays & Strings
2
0
26 people solved
Jun 28, 2026
Instacart logo
Instacart
Medium
Machine Learning Engineer

Square a Sorted Array in Linear Time

Given integers already in nondecreasing order, return their squares in nondecreasing order. Seek a linear-time solution instead of sorting the squares...

Coding & AlgorithmsTwo Pointers & Sliding Window
1
0
15 people solved
Jul 15, 2026
Amazon logo
AmazonGoogleMicrosoftCouchbase

Also asked at Microsoft, Couchbase

Easy
Software Engineer

Place Even Values at Even Indices and Odd Values at Odd Indices

Problem Exactly half the values in nums are even and half are odd. Rearrange the array so every index has a value of matching parity: even indices con...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
13 people solved
Databricks logo
Databricks
Medium
Software EngineerNew Grad

Design KV store with sliding-window average QPS

Problem Design an in-memory key–value store that supports mutation operations and can report the average QPS (queries per second) over a recent time w...

Coding & AlgorithmsData Structure Design
53
0
688 people solved
Dec 17, 2025
Capital One logo
Capital One
Hard
Software Engineer

Solve multiple algorithmic interview questions

Below are several independent coding tasks. For each task, implement a function that returns the required output. Assume: - Arrays/lists are 0-indexed...

Coding & AlgorithmsArrays & Strings
24
0
417 people solved
Feb 12, 2026
Uber logo
Uber
Medium
Software Engineer

Determine balanced k values in a permutation

You are given a permutation p of the integers 1..n. For a number k (where 1 <= k <= n), call k balanced if there exists a contiguous subarray p[l..r] ...

Coding & AlgorithmsTwo Pointers & Sliding Window
56
0
451 people solved
Feb 11, 2026
Microsoft logo
MicrosoftAmazonGoogle

Also asked at Google, IBM, Qualcomm

Hard
Software Engineer

Lexicographically Greatest Contiguous Substring

Problem Return the lexicographically greatest nonempty contiguous substring of s. Standard lexicographic order treats a proper prefix as smaller than ...

Coding & AlgorithmsTwo Pointers & Sliding WindowString Algorithms
0
0
10 people solved
Arista Networks logo
Arista Networks
Medium
Software Engineer

Fewest Adjacent-Sum Merges to Turn an Array Into a Palindrome

You are given an array of positive integers. In one operation, you choose two adjacent elements and replace them with a single element equal to their ...

Coding & AlgorithmsTwo Pointers & Sliding WindowGreedy
0
0
16 people solved
Jul 11, 2026
UiPath logo
UiPath
Medium
Machine Learning Engineer

Probability a draw-until-threshold score ends at or below a limit

A player starts with 0 points and draws repeatedly. Each draw adds an integer chosen uniformly at random from 1 to max_points (inclusive) to the playe...

Coding & AlgorithmsDynamic ProgrammingProbability
1
0
21 people solved
Sep 9, 2026
Amazon logo
Amazon
Medium
Software Engineer

Design a Structure That Returns the Max of the Last k Inserted Numbers

Design a data structure that receives a stream of numbers and reports the maximum of the most recent k numbers inserted. Implement this interface: `py...

Software Engineering FundamentalsData Structure DesignStacks & Queues
2
0
25 people solved
Aug 29, 2026
Apple logo
Apple
Medium
Software Engineer Locked

Find the K Closest Pairs in a Sorted Array

Implement k_closest_pairs(nums, k) for a strictly increasing sorted array. Work through the function contract, boundary cases, correctness argument, a...

Coding & AlgorithmsHeaps & Priority Queues
15
2
253 people solved
Aug 9, 2026
Capital One logo
Capital One
Medium
Software Engineer Locked

Reorder a String by Alternating Its Left and Right Ends

Reorder a string by alternately taking the next character from its left and right ends until every character appears exactly once. This string-process...

Coding & AlgorithmsTwo Pointers & Sliding Window
30
5
241 people solved
Jul 21, 2026
Arista Networks logo
Arista Networks
Medium
Software Engineer

Distinct Value Pairs With a Target Sum in a Sorted Doubly Linked List

A doubly linked list holds integers sorted in non-decreasing order. Find every pair of nodes whose values add up to a given target. As a follow-up, th...

Coding & AlgorithmsTwo Pointers & Sliding Window
1
0
17 people solved
Jul 11, 2026
Glean logo
Glean
Medium
Software Engineer

Implement 2048 Game Logic

Implement the core movement logic for the 2048 game. You are given an n x n integer board where 0 represents an empty cell and every nonzero value rep...

Coding & AlgorithmsSimulation & State Machines
49
0
339 people solved
Mar 1, 2026
Google logo
Google
Medium
Software EngineerSenior+ Locked

Compute the Union of Two Sorted Interval Lists

Compute the union of two sorted, nonoverlapping lists of closed intervals. Merge the two streams in linear time, combining endpoint-touching, duplicat...

Coding & AlgorithmsIntervals & SchedulingTwo Pointers & Sliding Window
52
0
366 people solved
Aug 6, 2026
Vanta logo
Vanta
Medium
Software Engineer

Implement a uniq-like function

Implement a function similar to the Unix uniq utility. You are given a sequence of strings representing lines of text in the order they appear in a fi...

Coding & AlgorithmsTwo Pointers & Sliding Window
60
1
407 people solved
Feb 23, 2026
Previous1...8910...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