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

Citadel

Medium

Software Engineer Locked

Find the Shortest Target-Sum Path

This question evaluates skills in binary tree traversal, path-sum computation, and optimization for selecting a root-to-leaf path with the minimal num...

Site Reliability Engineer

Determine Complete Interval Coverage

You need to process a stream of real-valued points on a one-dimensional target segment from 0 to 50. Each time a point x arrives, it contaminates the ...

Populate next pointers in a perfect binary tree

You are given a perfect binary tree (all leaves at the same level; every internal node has two children). Each node has fields left, right, and next. ...

Coding & Algorithms

78 people solved

Feb 7, 2026

Solve maze reachability and two follow-ups

This set of tasks evaluates graph and state-space search with constrained movement (maze rolling ball), tree algorithms and recursion for computing di...

Should you roll out if NSM decreases?

Scenario You ran an experiment. The north star metric (NSM) is profit per order. Observed results - Average order volume increased in treatment vs con...

Analytics & Experimentation

Compute signup rate and retention from raw logs

Scenario You are analyzing an A/B test for a marketing campaign offering a free 1-month trial. You are given raw “upstream” tables that resemble produ...

Data Manipulation (SQL/Python)

Calculate Daily Driver Pay

You are given a one-day event log for a delivery driver. Each input record is a JSON event with fields such as order_id, event_type, timestamp, and ba...

Data Scientist Locked

Design experiments for payments, search, and promotions

This question evaluates a data scientist's skills in product experimentation, causal inference, metric selection, and marketplace impact analysis acro...

Analytics & Experimentation

Describe Your Most Complex Project

The behavioral rounds focused on two areas: 1. Describe the most complex project you have worked on. Expect deep follow-up questions about: - the busi...

Behavioral & Leadership

Software Engineer Locked

Implement KV Store and Token Bucket

This question evaluates a candidate's skills in implementing core data structures and concurrent algorithms, specifically in-memory key-value store de...

Write SQL to compute max and min marks

Tables marks | column | type | notes | |---|---|---| | student_id | INT | primary key | | marks | INT | not null | Task Write a SQL query that returns...

Data Manipulation (SQL/Python)

Implement popup and redirect in JavaScript

You are working in a browser environment and must use vanilla JavaScript only (no external libraries). Task Implement a function showPopupAndRedirect(...

Compare XGBoost and LightGBM

In a machine learning interview, explain the key differences between XGBoost and LightGBM for a tabular booking-conversion prediction problem. Your an...

Software Engineer Locked

Design appointment scheduling data model and APIs

This question evaluates backend data modeling, REST API design, and enforcement of domain constraints within a web framework, focusing on scheduling, ...

System Design

28 people solved

Feb 5, 2026

Answer conflict, ambiguity, feedback, difficult coworker prompts

Prepare behavioral answers for these prompts: 1) Describe a time you had a conflict with your manager. How did you resolve it? 2) Describe a project w...

Behavioral & Leadership

46 people solved

Oct 2, 2025

Design keyword search for social posts

Design a Facebook-like post search feature: - Input: one or more keywords. - Output: all (or top-K) posts that contain the keyword(s). - Assume posts ...

Find high-value crypto users and top-CTR product

You are given three tables (timezone: UTC). Assume create_date, transaction_time, and event_time are timestamps. Tables users - user_id BIGINT PRIMARY...

Data Manipulation (SQL/Python)

Maximize memory capacity with primary-backup servers

You are helping to optimize the capacity of a cloud system. There are n servers, where n is always even. The memory capacity of the i-th server is giv...

Explain GC, singleton, and OOP principles

Answer the following Java/software-engineering fundamentals questions: 1. How does Java garbage collection work at a high level (generational GC, mark...

Software Engineering Fundamentals

Design market price change notifications

Design a system that notifies users when market prices change for the symbols they track. Context and requirements: - Users maintain a watchlist of sy...

System Design

200 people solved

Feb 4, 2026

Interview Questions

Find the Shortest Target-Sum Path

Determine Complete Interval Coverage

Populate next pointers in a perfect binary tree

Solve maze reachability and two follow-ups

Should you roll out if NSM decreases?

Compute signup rate and retention from raw logs

Calculate Daily Driver Pay

Design experiments for payments, search, and promotions

Describe Your Most Complex Project

Implement KV Store and Token Bucket

Write SQL to compute max and min marks

Implement popup and redirect in JavaScript

Compare XGBoost and LightGBM

Design appointment scheduling data model and APIs

Answer conflict, ambiguity, feedback, difficult coworker prompts

Design keyword search for social posts

Find high-value crypto users and top-CTR product

Maximize memory capacity with primary-backup servers

Explain GC, singleton, and OOP principles

Design market price change notifications

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