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

Coinbase

Medium

Software Engineer

Implement iterators and write tests in Java

Implement iterators and write tests in Java In Java, write everything from scratch (no IDE scaffolding): 1) Define a generic Iterator<T> interface wit...

Price a Sequential Four-Box Search Game

Price a Sequential Four-Box Search Game Four boxes contain one \$100 prize. Each opening costs the same fee x; you choose an unopened box and may stop...

Machine Learning EngineerIntern

Explain Transformers and deploy an LLM safely

Answer the following LLM-focused questions. 1) Transformer basics - What problem does the Transformer architecture solve compared with RNNs? - Explain...

Machine Learning EngineerSenior+ Locked

Implement Linear Regression Training

This question evaluates understanding of linear regression, mean squared error loss, gradient computation, parameter updates, and proficiency with vec...

Software Engineer Locked

Design a Data Stream Processor

This question evaluates the ability to design real-time data stream processing systems, testing competencies such as high-throughput ingestion, event ...

Software Engineer Locked

Filter Invalid Data Events

This question evaluates a candidate's ability to implement data validation, deduplication, stable filtering, time-range and allow-list checks, and to ...

Machine Learning Engineer

Insert parentheses to minimize expression value

You are given a string expression of the form A+B, where A and B are non-empty strings of digits (no digit is '0'). You must insert exactly one pair o...

Software Engineer Locked

Design a data structure to find streaming median

This question evaluates proficiency in data structure and streaming algorithm design for maintaining the median of a dynamic integer stream, testing c...

Machine Learning Engineer

Describe how you reduced measurable cost

Behavioral question (focus on ownership/delivery): > Tell me about a time you identified and solved a problem that caused measurable cost (e.g., cloud...

Behavioral & Leadership

Data Scientist Locked

Define and critique a user activity metric

This question evaluates a candidate's ability to design and critique user-activity metrics, covering event-level instrumentation, metric validity, and...

Analytics & Experimentation

Explain ETL schema changes and ensure integrity

Behavioral / Data Engineering Discussion Prompts You’re interviewing for a Data Engineer role. Answer the following prompts with concrete examples fro...

Behavioral & Leadership

Explain C++ default constructor generation rules

You are given a C++ class type T. 1. When will the compiler implicitly declare a default constructor for T? 2. When will the implicitly-declared defau...

Software Engineering Fundamentals

90 people solved

Sep 1, 2025

Maximize Unique Letters

This question evaluates proficiency in combinatorial optimization, bit manipulation, and state-compression techniques for selecting subsets under uniq...

Coding & Algorithms

38 people solved

Feb 8, 2026

Extend a Maze Solver

This question evaluates proficiency in implementing and debugging graph search algorithms and state-space modeling, including correct visited-state ha...

Design KPI dashboard tables: retention, weekly rollups, timezone

Question You are designing the analytical data model behind a fast KPI dashboard for a large-scale photo-sharing app. The dashboard is reported daily ...

Write SQL for basic user metrics

You are given a simplified schema for a fictional social app called Nextagram: - users(user_id PK, username, created_at TIMESTAMP) - follows(follower_...

Software Engineer Locked

Design and implement an LRU cache

This question evaluates knowledge of data structures, algorithmic design, API design, and memory/resource management required to implement an efficien...

Software EngineerIntern Locked

Merge two sorted arrays in-place

This question evaluates array-manipulation and in-place algorithm skills, including understanding of sorted-data merging, index/pointer management, an...

Software Engineer Locked

Explain How You Build Team Trust

This Behavioral & Leadership question evaluates interpersonal trust-building, leadership and accountability competencies—such as communication, reliab...

Behavioral & Leadership

Data Scientist Locked

Build a Churn Prediction Model

This question evaluates a candidate's competency in end-to-end churn modeling, including precise label definition, point-in-time feature engineering a...

Machine Learning

72 people solved

May 29, 2026

Interview Questions

Implement iterators and write tests in Java

Price a Sequential Four-Box Search Game

Explain Transformers and deploy an LLM safely

Implement Linear Regression Training

Design a Data Stream Processor

Filter Invalid Data Events

Insert parentheses to minimize expression value

Design a data structure to find streaming median

Describe how you reduced measurable cost

Define and critique a user activity metric

Explain ETL schema changes and ensure integrity

Explain C++ default constructor generation rules

Maximize Unique Letters

Extend a Maze Solver

Design KPI dashboard tables: retention, weekly rollups, timezone

Write SQL for basic user metrics

Design and implement an LRU cache

Merge two sorted arrays in-place

Explain How You Build Team Trust

Build a Churn Prediction Model

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