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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
Coinbase logo
Coinbase
Hard
Data Scientist

Solve the 12-coin balance puzzle

The 12-Coin Counterfeit Puzzle (Three Weighings) You are given 12 visually identical coins. Exactly one of them is counterfeit. The counterfeit coin d...

Statistics & MathPuzzles & Brainteasers
28
0
231 people solved
Oct 13, 2025
Whatnot logo
Whatnot
Hard
Software Engineer Locked

Remove All Adjacent Duplicate Pairs

Repeatedly remove equal adjacent character pairs until a Unicode string becomes stable. Use a stack-like single pass to expose newly adjacent duplicat...

Coding & Algorithms
13
0
123 people solved
Jul 14, 2026
Asana logo
Asana
Medium
Software Engineer

Explain code complexity and design two games

You are given three independent interview prompts. 1) Code comprehension & complexity - Given two short code snippets (language-agnostic), explain in ...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
62
0
440 people solved
Feb 8, 2026
Optiver logo
Optiver
Hard
Software Engineer Locked

Analyze an Unfair-Coin Bankroll Game

A player starts with a bankroll of 10. Explain the assumptions and derivation clearly, check edge cases, and show how the result changes when those as...

Statistics & MathProbabilityPuzzles & Brainteasers
28
0
222 people solved
May 24, 2026
Google logo
GoogleMetaMicrosoft

Also asked at Microsoft, Oracle, SoFi

Hard
Software Engineer

Select the Most Disjoint Palindromic Substrings of Sufficient Length

Problem Choose non-overlapping contiguous substrings of lowercase s. Every selected substring must be a palindrome and have length at least k. Return ...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
9 people solved
Microsoft logo
Microsoft
Medium
Software Engineer

Find max consecutive elements with sum below target

You are given: - An integer array nums of length n, sorted in non-decreasing order. - An integer index such that 0 ≤ index < n. - An integer target. S...

Coding & AlgorithmsArrays & Strings
16
0
161 people solved
Nov 17, 2025
Turo logo
Turo
Medium
Software Engineer

Design trip booking REST API and schema

Design a RESTful API for a guest to book a trip. Include: - Core endpoints (search availability, create booking, view/cancel booking, payment/confirma...

System DesignAPI DesignIndexing & Query Performance
16
0
169 people solved
Feb 12, 2026
DoorDash logo
DoorDash
Medium
Product Manager

DoorDash Rewards Program That Keeps Delivery Customers Coming Back

You are interviewing for a product manager role at DoorDash. Design a loyalty program for DoorDash customers whose purpose is better retention: keepin...

Product Design & StrategyGrowth & MonetizationMetrics & KPIs
0
0
9 people solved
Sep 20, 2026
C3 AI logo
C3 AI
Easy
Software Engineer

Design a restaurant reservation system

Problem Design a restaurant reservation system similar to common booking products. The system should allow customers to search availability and book t...

System DesignSystem Design FundamentalsTransactions & Isolation
31
0
370 people solved
Nov 7, 2025
OpenAI logo
OpenAI
Hard
Software Engineer

Explain Your Engineering Ownership

You are on an initial technical screening call for a Software Engineer role. Despite being an early-stage "recruiter" screen, it is unusually technica...

Behavioral & LeadershipProject Deep DiveReact & UI Frameworks
17
0
226 people solved
Apr 4, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad Locked

Median of a Data Stream

Implement add and median-query operations for a number stream, including overflow-safe averaging of the two middle values.

Coding & Algorithms
44
3
392 people solved
Sep 2, 2026
Meta logo
Meta
Hard
Software EngineerSenior+

Solve Subarray Sum and Local Minimum

Two coding problems were reported in the same phone-screen round: 1. Count target-sum subarrays. Given an integer array nums and an integer k, return ...

Coding & Algorithms
11
1
78 people solved
Apr 15, 2026
Google logo
GoogleSamsung
Medium
Software Engineer

Check a Path Through Mutually Connected Street Tiles

Problem Each grid tile has two street openings:1 left/right,2 up/down,3 left/down,4 right/down,5 left/up,and 6 right/up. Determine whether a continuou...

Coding & AlgorithmsGrids & MatricesGraphs
0
0
9 people solved
The New York Times logo
The New York Times
Easy
Data Analyst

Write SQL for content-view analytics

Context You work with page-view event logs and need to compute several engagement/usage summaries. Assume a single table: page_views | column | type |...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
5
0
83 people solved
Jan 17, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Software Engineer Locked

Implement a Simplified std::vector with Manual Memory Management

This question evaluates a candidate's grasp of low-level memory management in C++, including the distinction between raw allocation and object constru...

Software Engineering Fundamentals
16
0
115 people solved
Jun 15, 2026
Squarepoint logo
Squarepoint
Medium
Software Engineer

Parse payroll file and answer queries

You are given a payroll "file" as a StringIO (file-like) object in Python. The underlying text represents manually-entered payroll data. Assume the fo...

Coding & AlgorithmsData Cleaning & WranglingParsing & Interpreters
13
0
239 people solved
Dec 8, 2025
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Find Optimal Property Combination

This question evaluates combinatorial optimization and algorithmic problem-solving skills, focusing on subset selection under capacity constraints and...

Coding & AlgorithmsDynamic Programming
9
1
160 people solved
May 26, 2026
DoorDash logo
DoorDash
Hard
Software Engineer Locked

How to prepare for AI-assisted coding interviews?

This question evaluates proficiency in integrating AI coding assistants and developer tooling with core software engineering competencies such as debu...

Software Engineering FundamentalsAI-Assisted DevelopmentDebugging
71
0
651 people solved
Feb 12, 2026
Medium
Analytics Engineer

Continue Entry Numbers for a Daily Incremental Batch

Continue Entry Numbers for a Daily Incremental Batch The source relation is named entries for this exercise and has these columns: | Column | Meaning ...

Data Manipulation (SQL/Python)SQL
2
0
29 people solved
Sep 12, 2026
Millennium logo
Millennium
Medium
Software EngineerIntern

Explain a Project and Its Hardest Engineering Challenge

Choose a project you actually worked on and explain what you built, what you personally owned, and which engineering problem was hardest. Be prepared ...

Behavioral & LeadershipProject Deep Dive
8
0
61 people solved
Apr 26, 2026
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