Interview Questions
Practice the exact questions companies are asking right now.
"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"
"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"
"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."
"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."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"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."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"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."
"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."
"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."
"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."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"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."
How would you test a bike delivery option?
Case: Launch a bike-delivery option You work on a food delivery marketplace (customers place orders; couriers deliver). The team is considering launch...
Compute letter frequencies from encoded string
Problem You are given an encoded string s representing a string of lowercase English letters (a–z). The encoding follows these rules: 1. Letters a to ...
Implement Event Filtering and Queue Routing
An upstream event pipeline continuously emits events as JSON strings. You need to implement an in-memory routing service that decides which downstream...
Find Maximum Eastbound City Visits and Parse CSV
Answer both coding questions. Question 1: Maximum eastbound city visits You are given two arrays of the same length: - cities[i]: the name of the i-th...
Solve OA tasks on string, grid path, subarrays
You are given three independent coding tasks. Task 1: Reverse the middle if ends are vowels Given a string s (ASCII letters), if both the first and la...
Show role fit using past ad experience
In a manager interview for an ads engineering role, you’re often evaluated on whether you can “join and immediately contribute.” How would you: - Map ...
Diagnose Weekly Session Conversion Anomalies
You are a Data Scientist supporting an e-commerce platform. You receive a weekly time-series dashboard covering the past three years. The dashboard in...
Answer Behavioral Leadership Questions
The interview included a leadership-focused behavioral round. Prepare strong responses to the following prompts: - Describe a difficult challenge you ...
Design a smartwatch sensor subsystem
You are designing the sensing subsystem for a health-focused smartwatch. Describe how you would take the product from requirements to production. Your...
Implement worker time and payroll tracker
You are building an in-memory worker management module. Each worker has metadata and a history of office attendance intervals. Implement the following...
Solve Expression and Tree-List Problems
The coding portion included two algorithm problems: 1. Generate expressions with left-to-right evaluation Given a string num containing only di...
Design a geo-distributed rate limiter
Design a rate limiting system that works across multiple geographic regions (e.g., us-east, eu-west, ap-south). Requirements: - Enforce per-API-key li...
Present a Marketplace ML Project Deep Dive
In a Machine Learning Engineer interview for a pricing, marketplace, or growth team, present a recent representative ML project. Your deep dive should...
Discuss ML Project Tradeoffs
You are interviewing for a senior machine learning role and are asked to discuss a past recommendation or prediction project in depth. Use one concret...
Design pipeline using classification and embedding services
You are given two black-box ML services: 1. Classification Service - Input: One or more text documents. - Output: A label for each document (e.g...
Design a low-latency trading system
System Design: Low-Latency Electronic Trading Platform (Equities) You are designing a single-region electronic trading platform (exchange/ATS-like) th...
Find minimal rate k and subset sum
Question LeetCode 875. Koko Eating Bananas — Given vault sizes [3, 6, 7, 11] and time h = 8 hours, find the minimum integer rate k (vault units per ho...
Implement crawler, dedup, and persistent LRU
Implement crawler, dedup, and persistent LRU LeetCode 1236. Web Crawler: Crawl web pages starting from a given URL within the same hostname. LeetCode ...
Solve Array Distance and Wiki Navigation
You are given two independent coding tasks. For each task, clarify edge cases, implement the function, and write meaningful test cases. Task 1: Minimu...
Design a Payment Fraud Detection Service
Design a real-time fraud detection service for a payment platform. When a user submits a payment attempt, the platform calls your service before autho...