Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

383

Companies

980

Updated

11.12.2026

383 Questions 980 Companies11.12.2026

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_

"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"

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

"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."

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

"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."

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

_The_TaNk_

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

"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."

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

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

GoogleAmazonMeta

Easy

Software Engineer

Select Products Marked Both Low Fat and Recyclable

Problem Return product_id for products whose low_fats and recyclable values are both Y. Each flag is the source Y/N category. Rows may be returned in ...

Data Manipulation (SQL/Python)SQL

6 people solved

MicrosoftGoogleAmazon

Easy

Software Engineer

Match the Diabetes Prefix at a Space-Delimited Condition Boundary

Problem Return patient_id, patient_name and conditions for patients with a condition code beginning DIAB1. Conditions contains zero or more codes sepa...

Data Manipulation (SQL/Python)SQL

6 people solved

Oracle

Medium

Software EngineerSenior+ Locked

Classify Tree Nodes in SQL

Classify each tree node as Root, Inner, or Leaf in PostgreSQL using its parent ID and whether it has children, returning one classification per node.

Data Manipulation (SQL/Python)SQLTrees

Define Ultra success metrics and detect suspicious transactions

You work on a fintech product with these existing tables (UTC timestamps). You may only use these tables/columns; if a metric cannot be measured direc...

Analytics & ExperimentationMetrics & KPIsSQL

Compute Ride Metrics in SQL

You are given two tables for a ride-hailing product. Tables: - users: one row per registered user. - user_id BIGINT PRIMARY KEY - city VARCHAR NOT...

Data Manipulation (SQL/Python)SQLMetrics & KPIs

Find Tweets Whose Character Count Exceeds Fifteen

Problem Return tweet_id for Tweets rows whose content uses more than 15 characters. A tweet with exactly 15 characters does not qualify. Preserve the ...

Data Manipulation (SQL/Python)SQL

Calculate Order Request Metrics

You are working with DoorDash order and delivery-request data. Write SQL to answer the questions below. Tables: 1. orders - order_id BIGINT, primary k...

Data Manipulation (SQL/Python)SQLMetrics & KPIs

Analyze member video posting behavior by country

Question You are given two tables describing LinkedIn members and the videos they upload. Write SQL (and optionally Python where noted) to answer the ...

Data Manipulation (SQL/Python)SQL

Compute Cohort Retention Rate

You are given two tables: - users(user_id BIGINT, signup_ts TIMESTAMP) — one row per user. - user_activity(user_id BIGINT, activity_ts TIMESTAMP, even...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis

149 people solved

Feb 10, 2026

AmazonBloombergGoogle

Easy

Software Engineer

Calculate Contest Registration Percentages with the Source Tie Order

Problem For each contest present in Register, report contest_id and percentage of all Users registered in it, rounded to two decimal places. Sort perc...

Data Manipulation (SQL/Python)SQL

5 people solved

Medium

Data ScientistSenior+

Write Queries for Pinterest Engagement Tasks

You are given several data-manipulation tasks based on Pinterest-style product data. Use UTC for all timestamp-to-date conversions unless stated other...

Data Manipulation (SQL/Python)SQLMetrics & KPIs

Return Every Row in a Long High-Attendance ID Run

Problem Report Stadium records belonging to a run of at least three consecutive ids, with people >= 100 on every row in the run. Consecutive ids matte...

Data Manipulation (SQL/Python)SQL

7 people solved

Solve SQL and Python coding tasks

You are given a small library system with the following relational schema and several Python data-processing tasks. Answer the SQL questions and imple...

Coding & AlgorithmsSQLDynamic Programming

Exchange Neighboring Seat Assignments in the Result

Problem Return the Seat assignment after exchanging each consecutive pair of students: seats 1 and 2, then 3 and 4, and so on. If the student count is...

Data Manipulation (SQL/Python)SQL

9 people solved

Scribd

Medium

Software Engineer Locked

Many-to-Many Schema Design With a Join Table, Composite Primary Key, and Queries

A database schema and SQL question that asks you to model a many-to-many relationship between documents and tags with a join table and a composite pri...

Data Manipulation (SQL/Python)SQLIndexing & Query Performance

Sum Investment Values after Two Independent Group Tests

Problem Report tiv_2016, rounded to two decimal places, summing policies that share their tiv_2015 with at least one other policy and whose exact (lat...

Data Manipulation (SQL/Python)SQL

Full-Stack Data Table: Raw-SQL API, React Rendering, Row Flags and Pagination

You are given a small full-stack starter project: a SQL database that is already created and seeded, a minimal backend (you choose a Python backend or...

Software Engineering FundamentalsAPI DesignReact & UI Frameworks

Compute DAU and rolling MAU with zero days

You have two tables in PostgreSQL: Tables users - user_id (STRING / INT, PK) - signup_date (DATE) logins - user_id (STRING / INT, FK → users.user_id) ...

Data Manipulation (SQL/Python)Metrics & KPIsSQL

Data Scientist Locked

Monthly Cohort Retention

This question evaluates practical SQL skills in user retention analysis, specifically the ability to build a monthly cohort retention table from raw a...

Data Manipulation (SQL/Python)Segmentation & Cohort AnalysisSQL

Data Scientist Locked

Handle repeated churn in SQL

This question evaluates proficiency in time-based data manipulation and analytics, including handling repeated churn and resubscription, interval logi...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis

220 people solved

Jan 22, 2026

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Tech Interview Questions

Select Products Marked Both Low Fat and Recyclable

Match the Diabetes Prefix at a Space-Delimited Condition Boundary

Classify Tree Nodes in SQL

Define Ultra success metrics and detect suspicious transactions

Compute Ride Metrics in SQL

Find Tweets Whose Character Count Exceeds Fifteen

Calculate Order Request Metrics

Analyze member video posting behavior by country

Compute Cohort Retention Rate

Calculate Contest Registration Percentages with the Source Tie Order

Write Queries for Pinterest Engagement Tasks

Return Every Row in a Long High-Attendance ID Run

Solve SQL and Python coding tasks

Exchange Neighboring Seat Assignments in the Result

Many-to-Many Schema Design With a Join Table, Composite Primary Key, and Queries

Sum Investment Values after Two Independent Group Tests

Full-Stack Data Table: Raw-SQL API, React Rendering, Row Flags and Pagination

Compute DAU and rolling MAU with zero days

Monthly Cohort Retention

Handle repeated churn in SQL

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