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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

Apply bitwise tricks for performance

For an integer-heavy inner loop, propose bit-level optimizations that reduce branches and memory traffic: e.g., population count usage, fast modulo by...

Coding & AlgorithmsBit Manipulation
34
0
255 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Hard
Data ScientistSenior+

Design and analyze a free-trial A/B test

A/B Test Design: 1‑Month Free Trial Impact on Paid Subscription Conversion You are evaluating whether offering a 1‑month free trial increases paid sub...

Analytics & ExperimentationExperiment Design (A/B Testing)
43
0
323 people solved
Oct 13, 2025
Coinbase logo
Coinbase
Medium
Data Scientist

Write SQL and Python for funnels/retention

Given the following schema and small samples, answer Parts A–C. Assume timestamps are UTC and "today" is 2025-09-01. Schema: users(id INT, country STR...

Data Manipulation (SQL/Python)
5
0
53 people solved
Oct 13, 2025
Rippling logo
Rippling
Easy
Software EngineerIntern

Clarify and Find Common Ancestors in a Graph

Explain how you would find common ancestors in a graph. Begin by clarifying the edge direction, graph structure, queried vertices, and whether the res...

Software Engineering FundamentalsGraphs
9
0
94 people solved
Dec 12, 2025
Amazon logo
AmazonGoogleBloomberg
Easy
Software Engineer

Finish One Land Ride and One Water Ride

Finish One Land Ride and One Water Ride A visitor must take exactly one land ride and exactly one water ride. The two rides may be taken in either ord...

Coding & AlgorithmsIntervals & Scheduling
0
0
8 people solved
Pinterest logo
Pinterest
Medium
Software Engineer

Round numeric string values

Question Given a numeric string, implement rounding to the nearest integer (e.g., '3.5' → '4', '100.01' → '100'). Follow-up: round to the last signifi...

Coding & Algorithms
24
0
135 people solved
Jul 29, 2025
Google logo
Google
Hard
Software EngineerNew Grad Locked

Compute Turnstile Crossing Times

This question evaluates proficiency in queue simulation, event-driven scheduling, and handling priority and tie-breaking rules while achieving linear ...

Coding & AlgorithmsSimulation & State MachinesStacks & Queues
12
1
129 people solved
May 4, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Design an Uber Eats Cart Service

This question evaluates a candidate's ability to design a distributed shopping-cart service for a food-delivery platform, testing competencies in syst...

System DesignSystem Design FundamentalsConsistency & Availability
69
0
470 people solved
May 7, 2026
Shopify logo
Shopify
Medium
Machine Learning Engineer

Describe an end-to-end ML project

Behavioral & Leadership: Describe an End-to-End ML Project You Led Context: You are interviewing for a Machine Learning Engineer role in a consumer ma...

Behavioral & LeadershipProject Deep DiveML Data Pipelines & Feature Stores
24
0
193 people solved
Sep 6, 2025
Jane Street logo
Jane Street
Medium
Frontend Engineer

Field Layout: getOffset and insert

An object's binary layout is defined by an ordered list of fields. Each field has a unique name and a size in bytes. Fields are packed contiguously st...

Coding & Algorithms
13
0
136 people solved
Sep 29, 2025
Coupang logo
Coupang
Medium
Software Engineer

Find shortest distance between two islands

Problem You are given an R x C binary grid where: - 1 represents land - 0 represents water The grid contains exactly two 4-directionally connected isl...

Coding & Algorithms
15
0
103 people solved
Dec 13, 2025
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Design a simple greeting-card web app

This question evaluates a candidate's ability to design a minimal web application architecture for an MVP greeting-card service, covering frontend/bac...

System Design
10
0
131 people solved
Feb 11, 2026
Google logo
GoogleMicrosoftBloomberg

Also asked at Bloomberg, Meta, LinkedIn, Zoho

Easy
Software Engineer

Check Whether Repeated Keystrokes Can Produce a Typed Name

Problem Each character of name must be typed in order, but a long press may repeat that character one or more times. Return whether typed could result...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
1
0
9 people solved
IBM logo
IBM
Medium
Software Engineer Locked

Count Replacements Needed to Separate Equal Adjacent Characters

Count the minimum replacements needed to eliminate equal adjacent characters across many lowercase words by reducing each maximal repeated run without...

Coding & Algorithms
8
0
77 people solved
Jun 16, 2026
Meta logo
Meta
Medium
Data Scientist

Diagnose a sudden KPI drop and validate causes

A core KPI (comments_per_DAU) suddenly drops materially. Outline a structured root-cause analysis and validation plan. a) Scoping and sanity: Quantify...

Analytics & Experimentation
5
0
69 people solved
Oct 13, 2025
Creditkarma logo
Creditkarma
Medium
Machine Learning EngineerSenior+ Locked

Debug Sparse Multi-Task Ranking Models

This question evaluates a candidate's ability to debug multi-task ranking models in production, focusing on training stability, extreme label sparsity...

Machine Learning
6
0
95 people solved
Jun 10, 2026
Adobe logo
Adobe
Medium
Software Engineer

Explain a Recent Accomplishment

Question What is your most meaningful recent accomplishment? Describe the situation, your contribution, the choices you made, and the evidence that th...

Behavioral & Leadership
1
0
27 people solved
Apr 19, 2026
Asana logo
Asana
Medium
Software Engineer

Design a Twitter-like microblogging service

Design a Twitter-like microblogging system. You can describe it verbally and with structured notes. Requirements: - Users can post short messages. - U...

System DesignSearch & Feed SystemsSystem Design Fundamentals
16
0
285 people solved
Feb 8, 2026
MathWorks logo
MathWorks
Easy
Software Engineer

Minimize shortest path by adding weight-1 edges

You are given a weighted directed graph with nodes labeled 1..n. The existing edges are described by three arrays of equal length m: - from[i]: start ...

Coding & Algorithms
6
0
91 people solved
Mar 1, 2026
Omnissa logo
Omnissa
Medium
Software Engineer Locked

Find the Maximum Sum of a Contiguous Subarray

Compute the maximum sum of any nonempty contiguous subarray, including all-negative inputs and large 64-bit totals. The exercise calls for a linear sc...

Coding & Algorithms
2
0
28 people solved
Sep 4, 2026
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