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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
Shein logo
Shein
Medium
Software Engineer

Solve array modulo and parentheses tasks

Implement two tasks: 1) Count subarrays by modulo remainder - Input: integer array nums (length n), integers K (1 ≤ K ≤ 10^ 4) and R (0 ≤ R < K). - Ou...

Coding & Algorithms
4
0
71 people solved
Sep 6, 2025
Qube Research & Technologies logo
Qube Research & Technologies
Medium
Software Engineer

Implement a type-erased function wrapper

Implement a minimal std::function-like callable wrapper in C++ using type erasure via inheritance and a virtual call. Define a template Function<R(Arg...

Coding & AlgorithmsProgramming LanguagesMemory Management
14
0
158 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer

Maintain real-time top-K products from events

Design a data structure/class that ingests a stream of product events and returns the current top‑K products at any time. Events include {timestamp, p...

Coding & Algorithms
6
1
95 people solved
Sep 6, 2025
Amperity logo
Amperity
Medium
Software EngineerSenior+

Explain Responsible AI Adoption on an Engineering Team

Explain Responsible AI Adoption on an Engineering Team Discuss how you use AI tools in your own engineering work, how you would help a team adopt them...

Behavioral & LeadershipAI-Assisted DevelopmentPrivacy & Compliance
2
0
32 people solved
Apr 7, 2026
Meta logo
Meta
Medium
Data Scientist

Measure scheduled posts feature success

Facebook is considering launching a new feature that allows users to schedule a post to be published at a future time. The product hypothesis is that ...

Analytics & ExperimentationExperiment Design (A/B Testing)Bayesian Statistics
14
0
162 people solved
Apr 30, 2026
Jump Trading logo
Jump Trading
Medium
Software Engineer

Explain C++ vector, unordered_map, and virtual functions

Explain C++ vector, unordered_map, and virtual functions In C++, explain: - The amortized and worst-case time complexity of vector::push_back, and how...

Coding & AlgorithmsProgramming Languages
38
0
279 people solved
Jul 16, 2025
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Explain normalization, regularization, CTR, imbalance handling

This question evaluates mastery of normalization methods, regularization techniques, click-through-rate modeling, and class-imbalance strategies, with...

Machine LearningNeural Networks & TrainingCTR Prediction & Ads ML
7
0
96 people solved
Feb 12, 2026
Qube Research & Technologies logo
Qube Research & Technologies
Hard
Software Engineer Locked

Explain left-skewed returns and Black–Scholes terms

This question evaluates understanding of quantitative finance and statistical concepts—specifically interpretation of left-skewed return distributions...

Software Engineering Fundamentals
3
0
53 people solved
Jan 15, 2026
Google logo
Google
Medium
Product Manager

Build vs. Buy Decision Framework

Product Decision Prompt: Build vs. Buy Framework Your team needs to deliver a new system to support a product. You can either build it in-house or buy...

Product / Decision MakingProduct StrategyTechnical Tradeoffs for PMs
23
0
232 people solved
Jul 4, 2025
Salesforce logo
Salesforce
Medium
Software Engineer

Find the Minimum Word Transformation Steps

Problem Transform a start word into an end word by changing exactly one character at a time. Every intermediate word and the end word must belong to t...

Coding & Algorithms
3
0
41 people solved
Feb 22, 2026
Crowdstrike logo
Crowdstrike
Medium
Software Engineer

Implement templated string replacement

You are given: 1. A dictionary (map) of placeholder keys to values, for example: `python values = { "db_host": "example.com", "db_port": 5001 } ` ...

Coding & AlgorithmsParsing & InterpretersArrays & Strings
10
0
158 people solved
Oct 5, 2025
Microsoft logo
Microsoft
Medium
Product Manager

Product Improvement: Making It Easier to Share and Collect Photos in Google Photos

How would you make sharing photos and videos in Google Photos better? `hint Find the sharing moment that breaks Think of a specific occasion when seve...

Product Design & StrategyProduct Design & Improvement
0
0
7 people solved
Aug 8, 2026
Salesforce logo
Salesforce
Medium
Software Engineer

Find the Lowest Common Ancestor Using Parent Pointers

Problem Nodes in a rooted forest have parent pointers but no child lists and no root pointer. Given the parent relationship and two node indices, retu...

Coding & Algorithms
4
0
53 people solved
Apr 11, 2026
Meta logo
Meta
Hard
Software EngineerSenior+

Build a Mistral-powered RAG agent

Build a Minimal RAG Tool Using the Mistral API Context You have an API token and need to implement a small retrieval-augmented generation (RAG) tool i...

ML System Design
13
0
142 people solved
Sep 6, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Paginate forward and backward through results

You are asked to extend a basic pagination system to support forward and backward navigation, similar to a cursor-based API. You are given: - A zero-i...

Coding & AlgorithmsData Structure Design
26
0
225 people solved
Dec 8, 2025
Disney logo
Disney
Medium
Product Manager

Disney PM strategy: key challenges and growth levers in customer acquisition marketing

You are interviewing for a product manager role at Disney. What do you see as the biggest opportunities, and the hardest challenges, in acquisition ma...

Product Design & StrategyGrowth & MonetizationMarket & Competitive Analysis
0
0
11 people solved
Nov 2, 2025
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
Meta logo
Meta
Medium
Software Engineer Locked

Solve three array/string/graph coding tasks

This set of three coding tasks evaluates proficiency in fundamental data structures and algorithms, covering multi-way array merging, custom character...

Coding & Algorithms
6
0
78 people solved
Feb 11, 2026
Otter.Ai logo
Otter.Ai
Medium
Data EngineerSenior+

Defend a Data Pipeline Architecture and Its Trade-offs

Prompt Choose one production data pipeline that you personally designed or substantially changed. Walk through its architecture, the requirements that...

System Design
2
0
45 people solved
Apr 2, 2026
Roblox logo
Roblox
Hard
Machine Learning Engineer

Design a real-time game recommendation system

Design a real-time game recommendation system System Design: Real‑Time Game Recommendation System (Architecture Focus) You are designing a real‑time r...

ML System DesignRecommendation SystemsReal-Time Systems
14
0
244 people solved
Jul 16, 2025
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