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."
Design a GPU-Efficient Video Service
Design a text-to-video generation platform similar to a modern generative video product. Treat the actual model inference on GPUs as a black box: a jo...
Solve Array, Matrix, and Recommendation Problems
During an onsite coding interview, solve the following independent tasks. Problem 1: In-place unique prefix You are given a nondecreasing integer arra...
Solve Wonderful Strings and Grid Queries
Two algorithmic tasks were reported. Task 1: Minimum-cost wonderful string A string is considered wonderful if, among the letters 'a' through 'j', at ...
Print a binary tree as aligned text
Implement a function that prints (or returns) an ASCII layout of a binary tree. Requirements: - Each node has a string value (assume it contains no sp...
Design real-time delivery tracking system
Question Design a real-time delivery / courier-tracking platform that gives dispatchers, operations, and customers live visibility into each courier's...
How would you choose between shows?
You are a data scientist at a streaming company similar to Netflix or Hulu. Leadership wants a recommendation on whether to renew an existing series o...
Explain your database experience and debugging approach
Interview prompts (practical engineering) 1. What databases have you worked with? - Which engines (SQL/NoSQL), what scale, and what features you us...
Build a Weekly Calendar
Implement an interactive weekly calendar UI. Requirements: - Display a one-week calendar with 7 days. - The calendar should be divided into 1-hour tim...
Solve Three Array Coding Problems
An online assessment contains the following three independent coding problems. For each problem, write a function that returns the requested value. Us...
Choose models for trading tasks
You are given several modeling options for quantitative trading or pricing work: linear regression, convolutional neural networks, transformers, and r...
Design Identity-Trust A/B Test
You are interviewing for a Data Scientist role on an Identity & Trust team at a consumer product company. The team wants to launch a feature that stre...
Describe conflict resolution and initiative
The behavioral round reportedly consisted of 7-8 standard questions. A polished version of the expected prompts would be: - Tell me about a time you h...
Find the First Unique Log
You are given a list of log entries in the order they were produced. Each log entry can be treated as a string. Return the first log entry that appear...
Select words to maximize unique characters
Problem You are given an array of strings words. You may choose any subset of these strings and concatenate the chosen strings in any order. Your goal...
Design a multimodal RAG assistant
Prompt Design a Retrieval-Augmented Generation (RAG) system that can answer user questions using an internal knowledge base containing multiple modali...
Design model deployment, monitoring, and low-latency inference
You have trained a fraud detection model and need to productionize it. Part A: Deployment - How would you deploy an ML model to production? - What art...
Reverse Linked List Groups
Given the head of a singly linked list and a positive integer k, reverse the list in consecutive groups of size k. Unlike the common variant where a f...
Assign Reviewers from Changed Files
Write a Java program that helps automatically assign a code reviewer after a pull request is opened. You are given: 1. A local Git repository path. 2....
Assess Demand for Group Video Chat
Meta is considering adding a group video chat feature to an existing communication product that currently supports messaging and possibly 1:1 calling....
Answer common behavioral questions
Behavioral Interview: STAR Responses for a Technical Screen (Software Engineer) You are preparing for a technical screen that includes behavioral and ...