Interview Questions

Practice the exact questions companies are asking right now.

Questions

10.0k

Companies

520

Updated

08.21.2026

10.0k Questions 520 Companies08.21.2026

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

Role

Amazon

Medium

Data Scientist

Select Top Customers Using Transaction Data Filters

transactions +----+---------+------------+--------+ | id | user_id | order_date | amount | +----+---------+------------+--------+ | 1 | 101 | 202...

Data Manipulation (SQL/Python)

Retrieve First Active and Last Inactive Dates per User

Given a table activity that tracks user activities, write a SQL query to retrieve the first active date and last inactive date for each user. Table Sc...

Data Manipulation (SQL/Python)

Identify Bugs in Python Script for User Assignment

Scenario A simple Python script assigns users to experiment groups and triggers the free-trial offer. Question Inspect the script and list any bugs or...

Ensure Fairness Beyond Gender Parity in Lending Practices

Ensure Fairness Beyond Gender Parity in Lending Practices Fair Lending Behavioral Interview Prompt Scenario You are discussing fair lending practices ...

Behavioral & Leadership

Design A/B Test for Cost-Per-Conversion Efficiency Analysis

Design A/B Test for Cost-Per-Conversion Efficiency Analysis Multi-Arm A/B Test: Comparing Cost-Per-Conversion Across Channels Scenario You need to com...

Analytics & Experimentation

155

329 people solved

Aug 4, 2025

Evaluate Probability of Positive User Comments and Model Performance

Evaluate Probability of Positive User Comments and Model Performance Social-Media Positivity: Independence and Model Comparison Context You are evalua...

Optimize Driver Repositioning for Minimal Pickup Time

Scenario Design and implement algorithms for ride-sharing dispatch and capacity planning. Question Given historical rider demand density and current d...

Coding & Algorithms

109 people solved

Aug 4, 2025

Evaluate account re-ranking via logs and A/B test

A product has users with multiple accounts. In the UI, these accounts are shown as a list. - Current ranking: accounts are sorted by most recent visit...

Analytics & Experimentation

Implement a multi-button click detector

Implement a click detector for multiple physical buttons. You receive button state updates as a stream. Each update provides: - button_id (integer) - ...

Machine Learning Engineer Locked

Minimize batches and allocate riders by time

This question set evaluates algorithmic problem-solving in scheduling and resource allocation, assessing understanding of batching under capacity and ...

Decide Whether an LSTM Is Appropriate for Sequence Data

You are considering an LSTM for a prediction problem with sequential observations. Explain what an LSTM is designed to capture, how you would prepare ...

Diagnose and Validate a Regression Model

You fit a regression model to predict a continuous outcome. The headline error metric looks acceptable, but the team asks whether the model is trustwo...

Statistics & Math

22 people solved

Aug 4, 2025

Write SQL for call pickup and usage metrics

This question evaluates proficiency in SQL data manipulation—specifically aggregation, joins, filtering, and safe handling of edge cases—to compute ca...

Data Manipulation (SQL/Python)

Plan DS approach for biker delivery project

You are a Data Scientist supporting a “biker” (delivery rider) product/project for a food-delivery platform. An interviewer gives only a short descrip...

Analytics & Experimentation

Data ScientistSenior+

Implement Integer Square Root

Given a non-negative integer x, implement sqrt(x) and return the integer part of its square root, i.e., floor(sqrt(x)). Requirements: - Do not use a b...

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 ...

Machine Learning EngineerNew Grad

Marketplace Data Store: Order Matching and End-of-Day Reconciliation

Marketplace Data Store: Order Matching and End-of-Day Reconciliation You are building the core of a marketplace where sellers list individual units of...

Data Scientist Locked

Design a short-video recommender system

This question evaluates a data scientist's competency in end-to-end machine learning system design for recommender systems, including retrieval and ra...

Implement a leaky-bucket rate limiter

Implement a leaky-bucket rate limiter Implement a Leaky-Bucket Rate Limiter with Tests and Distributed Design Context and Assumptions - Implement in a...

Explain job-change motivation despite mission fit

Explain job-change motivation despite mission fit Behavioral: Motivation for Change — Impact, Growth, Mission You are a software engineering candidate...

Behavioral & Leadership

66 people solved

Aug 1, 2025

Interview Questions

Select Top Customers Using Transaction Data Filters

Retrieve First Active and Last Inactive Dates per User

Identify Bugs in Python Script for User Assignment

Ensure Fairness Beyond Gender Parity in Lending Practices

Design A/B Test for Cost-Per-Conversion Efficiency Analysis

Evaluate Probability of Positive User Comments and Model Performance

Optimize Driver Repositioning for Minimal Pickup Time

Evaluate account re-ranking via logs and A/B test

Implement a multi-button click detector

Minimize batches and allocate riders by time

Decide Whether an LSTM Is Appropriate for Sequence Data

Diagnose and Validate a Regression Model

Write SQL for call pickup and usage metrics

Plan DS approach for biker delivery project

Implement Integer Square Root

Maximize weighted sum with disjoint adjacent swaps

Marketplace Data Store: Order Matching and End-of-Day Reconciliation

Design a short-video recommender system

Implement a leaky-bucket rate limiter

Explain job-change motivation despite mission fit

Explore by company

Explore by role

Explore by category

Popular interview guides

Popular question categories