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."
Implement attention and Transformer with backward pass
Implement Scaled Dot-Product Attention and a Transformer Block (No Autograd) Context: Build multi-head self-attention and a Transformer encoder-style ...
Implement an Arithmetic Expression Evaluator
Implement an arithmetic expression evaluator. Part 1: Given a string expression containing non-negative integers, spaces, and the operators '+', '-', ...
Design a Short-Video Recommendation System
Design an end-to-end recommendation system for a short-video feed product. The system serves a large user base and must choose and rank videos for eac...
Design a prompt playground
Design a prompt playground for working with large language models. Users should be able to write prompts, run them against one or more models, compare...
Discuss Research Experience and Challenges
Behavioral interview focused on prior research experience. Be prepared to describe one or two research projects you personally drove, including the pr...
How would you diagnose a completed orders drop?
Case: Completed orders dropped in Los Angeles You are a Data Scientist supporting a consumer pricing team for a two-sided delivery marketplace (custom...
Design an Event Recommendation Engine
You are building an email marketing recommendation engine for a ticketing marketplace. The marketplace has many users and many events. The engine shou...
Plan for timed probability assessment
Timed Probability/Statistics Assessment Strategy Company: Optiver · Role: Software Engineer You are taking a timed online assessment of 30 probability...
Solve interval merge and string dedup problems
You are given three coding questions from a phone screen. Solve each independently. 1) Merge overlapping intervals Input: A list of intervals interval...
Determine Safe Bomb Defusal
You are given a finite state machine representing a bomb defusal process. - Each state is represented by a string. - initialState is the starting stat...
Compute Company Suggestion Funnels
An AI workflow suggestion product logs suggestion-related events in a single event table. Table: suggestion_events - event_id STRING: unique event rec...
Design Search Autocomplete
Design a large-scale autocomplete service for a search engine. As a user types a query prefix, the system should return the top 5 suggested full queri...
Design an ML search system with RAG
Design an ML search system with RAG System Design: ML-Powered Enterprise Search with RAG Design an ML-powered enterprise search system using Retrieval...
How to host many domains on one IP?
You have a single Linux server with one public IPv4 address. A coffee shop, butcher shop, and auto repair shop each want their own website and their o...
Find largest group of two-digit numbers sharing digits
You are given an integer array A of length n (1 <= n <= 100). Each element is a two-digit number (e.g., from 10 to 99). Two numbers are considered con...
Count Blocked Rate-Limited Requests
You are given an in-memory request log for a web platform. Each log entry has: - timestamp: an ISO-8601 UTC timestamp - request_ip: the client IPv4 ad...
Design a rare-book lending and returns system
Design a rare-book lending and returns system System Design: Rare Books Circulation Across Multiple Branches Context Design a system to manage borrowi...
How do you prioritize and influence?
In a behavioral interview for an AI/ML engineering role, be prepared to answer questions like the following: 1. How do you prioritize multiple project...
Compare arrays, linked lists, hash tables, trees
Answer the following computer-science fundamentals questions: 1) What are the time complexities (Big-O) of common sorting algorithms (e.g., bubble sor...
Write SQL for TikTok Live creator metrics
You are analyzing TikTok Live sessions and their engagement. Tables live_room Each row is a Live session (“room”) launched by a creator. | column | ty...