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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
Anthropic logo
Anthropic
Medium
Software Engineer

Implement Python LRU cache with varargs

Implement an LRU cache in Python as a decorator cache(maxsize) that memoizes a target function's results. Must support positional args, args, and *kwa...

Coding & AlgorithmsData Structure DesignProgramming Languages
28
0
240 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Product Manager

Building a product on Facebook for people planning and taking trips

You are a product manager at Meta. Design a travel product that lives inside Facebook, makes the experience better for people who travel, and serves n...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
9 people solved
Apr 25, 2026
Meta logo
Meta
Medium
Software Engineer

Optimize flight costs and find grid path

1) Given two integer arrays D and R of equal length n, where D[i] is the cost to depart on day i and R[j] is the cost to return on day j, choose indic...

Coding & AlgorithmsArrays & StringsGrids & Matrices
15
0
107 people solved
Sep 6, 2025
L
Latitudeai
Medium
Backend EngineerSenior+ Locked

Design a Thread-Safe Bounded Blocking Queue

Design a thread-safe bounded blocking queue for multiple producers and consumers, with FIFO ordering and well-defined put, take, and close behavior. D...

Software Engineering Fundamentals
10
0
73 people solved
Jul 2, 2026
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Solve Shipping and Bundle-Cost Problems

This question evaluates algorithmic reasoning for scheduling and capacity planning (minimum daily shipping capacity) and combinatorial optimization wi...

Coding & Algorithms
4
0
77 people solved
Nov 17, 2025
Google logo
Google
Medium
Software EngineerNew Grad

Return the Lexicographically Smallest Two-Sum Index Pair

Return the Lexicographically Smallest Two-Sum Index Pair Problem Implement twoSumSmallestPair(nums, target) -> pair. Return the lexicographically smal...

Coding & Algorithms
15
0
94 people solved
Dec 8, 2025
Garner Health logo
Garner Health
Medium
Software EngineerSenior+ Locked

Validate a String of Brackets

Validate a bracket string by ensuring every closing symbol matches the most recent unmatched opener. The task tests stack discipline, nesting order, e...

Coding & Algorithms
4
0
42 people solved
May 24, 2026
Slack logo
Slack
Medium
Product Manager

Real-Time Team Chat System Design for Slack: Channels, Delivery and Message History

Design Slack: the system behind a workplace messaging app where members of a workspace talk in channels and direct messages and see new messages appea...

System DesignTechnical Tradeoffs for PMsReal-Time Systems
0
0
7 people solved
Mar 17, 2026
Meta logo
Meta
Medium
Data Scientist

Write SQL for visibility, calls, and cohort activity

You have the following schema and toy data. Assume "today" = 2025-09-01. users(user_id INT, signup_date DATE) Sample: user_id | signup_date -------...

Data Manipulation (SQL/Python)
3
0
25 people solved
Oct 13, 2025
Reevo logo
Reevo
Medium
Software Engineer

Maximize weighted sum with disjoint adjacent swaps

You are given an integer array arr of length n (0-indexed). Define the weighted sum as: S = Σ_{i=0..n-1} arr[i] * (i + 1). You may perform any number ...

Coding & Algorithms
6
0
66 people solved
Feb 2, 2026
Rbcroyalbank logo
Rbcroyalbank
Easy
Data EngineerIntern

Explain pandas and SQL basics

You are interviewing for a Data Engineer co-op/intern role. Answer the following short technical questions. Python / pandas: 1. What is the difference...

Data Manipulation (SQL/Python)SQLPandas & Python Data
11
0
82 people solved
Jan 14, 2026
Apple logo
Apple
Hard
Data Scientist

Compute optimal matrix-chain multiplication order

Matrix Chain Multiplication: Optimal Parenthesization and Analysis You are given five matrices to multiply: A1 (10×30), A2 (30×5), A3 (5×60), A4 (60×2...

Coding & Algorithms
11
0
110 people solved
Oct 13, 2025
Supio logo
Supio
Easy
Software Engineer

Debug and extend a streaming chat app

Scenario You are given a small codebase for a web chat UI that calls an LLM API (similar to a ChatGPT-style interface). You can run it locally. During...

Software Engineering FundamentalsDebuggingState Management
11
0
90 people solved
Feb 11, 2026
LinkedIn logo
LinkedIn
Easy
Data Scientist Locked

Sketch distributions and compare mean/median/mode

This question evaluates understanding of distributional shape, central tendency (mean, median, mode), skewness, outliers, and the effects of combining...

Statistics & MathProbability
14
0
121 people solved
Feb 16, 2026
MongoDB logo
MongoDB
Medium
Software EngineerSenior+ Locked

Explain Modern Python Features and Ecosystem

This question evaluates a candidate's expertise in modern Python language features, the surrounding ecosystem of libraries and frameworks, GUI toolkit...

Software Engineering FundamentalsProgramming LanguagesConcurrency
4
0
89 people solved
May 21, 2026
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Design weapon-selling ad detection from posts

This question evaluates a candidate's ability to design a production-scale multimodal ML system for detecting weapon-selling ads, testing competencies...

ML System DesignModel EvaluationSupervised Learning
17
0
136 people solved
Dec 15, 2025
Cloudflare logo
Cloudflare
Easy
Software Engineer

Resolve conflicts during code reviews

In a behavioral interview, you are asked: > How do you resolve conflicts during code reviews? Describe how you would handle disagreements about code c...

Behavioral & Leadership
3
0
70 people solved
Dec 8, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Compute Differences Between Catalog Trees

You are given two rooted catalog trees. Each node has a unique string key among its siblings and an associated value. Compare the two trees and return...

Coding & AlgorithmsTrees
21
0
167 people solved
Sep 6, 2025
Otter.Ai logo
Otter.Ai
Medium
Software Engineer

Fixed-Width Text Display

Fixed-Width Text Display You are building a text display that renders a sequence of words inside a viewport of a fixed character width maxWidth. The d...

Coding & Algorithms
6
0
70 people solved
Mar 24, 2026
Airbnb logo
Airbnb
Hard
Software Engineer

Implement retry wrapper and interdependent validators

Context You are implementing reusable utilities that are commonly needed in modern web apps: 1) a robust retry wrapper for functions that can fail syn...

Software Engineering FundamentalsJavaScript & TypeScriptFault Tolerance & Failover
23
0
200 people solved
Sep 6, 2025
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