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
1.5k
Companies
980
Updated
11.12.2026
1.5k 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
Meta logo
MetaGoogleAmazonBloomberg

Also asked at Amazon, Bloomberg

Medium
Software Engineer

Largest Selection That Forms a Symmetric Power Pattern

Largest Selection That Forms a Symmetric Power Pattern You are given an array nums of positive integers. Select some of its elements, using each array...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
0
0
10 people solved
Amazon logo
Amazon
Medium
Software Engineer

Longest Arithmetic Subarray with One Optional Replacement

Problem You are given an integer array nums. You may replace at most one element with any integer, then select a nonempty contiguous subarray. A subar...

Coding & AlgorithmsArrays & StringsDynamic Programming
0
0
9 people solved
Infosys logo
InfosysAmazonMeta
Medium
Software Engineer

Return the Negative x-th Order Statistic of Every Fixed Window

Problem For each contiguous length-k window in nums, its beauty is its x-th smallest value if that value is negative; otherwise its beauty is zero. Re...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
0
0
9 people solved
Google logo
GoogleInfosys
Medium
Software Engineer

Longest Subsequence with a Nonzero XOR

Problem Given an integer array nums, return the greatest length of a subsequence whose bitwise XOR is nonzero. If no such subsequence exists, return 0...

Coding & AlgorithmsBit ManipulationArrays & Strings
0
0
11 people solved
Meta logo
Meta
Medium
Software EngineerSenior+

Group Lowercase Strings into Families Related by a Uniform Letter Shift

Shifting a string of lowercase letters moves every character forward by the same number of places in the alphabet, wrapping from z back to a. Shifting...

Coding & AlgorithmsArrays & Strings
1
0
16 people solved
Apr 1, 2026
Amazon logo
AmazonMetaUber

Also asked at Uber, Google, Bloomberg, Anduril, Apple

Easy
Software Engineer

Verify Lexicographic Word Order under a Supplied Alphabet

Problem The string order is a permutation of the lowercase English alphabet from earliest to latest. Return whether words is lexicographically nondecr...

Coding & AlgorithmsArrays & StringsSorting
0
0
9 people solved
Roblox logo
Roblox
Hard
Software Engineer

Rank queries by prefix, frequency, and time

You are given three arrays of the same length n: - queries[i]: a non-empty string representing the text of the i-th query. - timestamps[i]: an integer...

Coding & AlgorithmsString Algorithms
44
0
392 people solved
Oct 14, 2025
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Move every zero to the end of an array while preserving the order of other values

Given a list of integers nums, move every 0 to the end of the list while keeping the non-zero values in their original relative order. Return the rear...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
15 people solved
Apr 3, 2026
Amazon logo
Amazon
Medium
Software Engineer

Maximum Equal Neighbor Pairs After One Value Replacement

Maximum Equal Neighbor Pairs After One Value Replacement You are given an integer array nums, with positions numbered from 1 through its length. You m...

Coding & AlgorithmsArrays & Strings
0
0
6 people solved
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Find the Earliest Contiguous Removal That Balances Index Sums

Find the earliest fixed-length block to remove so the remaining array has equal even- and odd-index sums, accounting for the reindexed suffix.

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
6
0
105 people solved
Sep 9, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Data Scientist

Count inversions in a permutation

Problem Given an array a of length n that is a permutation of distinct integers (e.g., 1..n), define an inversion as a pair of indices (i, j) such tha...

Coding & AlgorithmsArrays & Strings
21
0
171 people solved
Nov 28, 2025
Verkada logo
Verkada
Hard
Software Engineer

Implement WordGuess feedback scoring

WordGuess (Wordle-like) scoring Implement a function that scores a guess against a secret word of the same length. Scoring rules (per character) Retur...

Coding & AlgorithmsArrays & Strings
23
0
163 people solved
Oct 13, 2025
Google logo
GoogleAmazonBloombergMicrosoft

Also asked at Bloomberg, Microsoft

Medium
Software Engineer

Place Fruit Types in the Leftmost Eligible Baskets

Problem You are given two integer arrays, fruits and baskets, each of length n. The value fruits[i] is the quantity of fruit type i, and baskets[j] is...

Coding & AlgorithmsTreesSimulation & State Machines
0
0
8 people solved
Capital One logo
Capital One
Medium
Machine Learning Engineer Locked

Count ordered fragment pairs forming a password

This question evaluates proficiency with string manipulation, handling duplicate fragments, and combinatorial reasoning about ordered index pairs that...

Coding & AlgorithmsArrays & Strings
16
0
109 people solved
Jan 20, 2026
Google logo
Google
Medium
Software Engineer

Check if all substrings are anagrams of words

You are given a string s (letters only) and access to an English dictionary dict (a set of valid words). Return true if every contiguous substring of ...

Coding & AlgorithmsArrays & Strings
70
0
666 people solved
Mar 11, 2026
Microsoft logo
MicrosoftGoogle
Medium
Software Engineer

Find the Smallest Stable Index II

Find the Smallest Stable Index II You are given an integer array nums of length n and an integer k. For each zero-based index i, its instability score...

Coding & AlgorithmsArrays & Strings
0
0
6 people solved
DRW logo
DRW
Medium
Software Engineer

Solve odd-string, digit swap, patient slot assignment

Question Task 1 – Odd-occurrence string: Write a function that, given an integer N (1..200 000), returns a length-N lowercase string in which every le...

Coding & AlgorithmsGraphsArrays & Strings
13
0
237 people solved
Aug 4, 2025
Bloomberg logo
BloombergAmazonGoogle

Also asked at Google, Meta, Microsoft

Medium
Software Engineer

Sum Frequency Imbalance Across Substrings

Problem For a nonempty string, define its beauty as its largest character frequency minus its smallest positive character frequency. For lowercase str...

Coding & AlgorithmsArrays & Strings
0
0
5 people solved
Google logo
GoogleAmazon
Hard
Software Engineer

Score a Grid After Coloring Column Prefixes

Score a Grid After Coloring Column Prefixes Problem You are given an n x n integer matrix grid. Every cell is initially white. In one operation, choos...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
1
0
8 people solved
Qube Research & Technologies logo
Qube Research & Technologies
Medium
Software Engineer

Implement flat_map, redistribute wealth evenly

Implement flat_map, redistribute wealth evenly Implement std::flat_map in C++, including its iterator; explain design choices and add thorough test ca...

Coding & AlgorithmsProgramming LanguagesArrays & Strings
6
0
121 people solved
Aug 4, 2025
Previous1...545556...75Next
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