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 ChatGPT-like web chat UI
Scenario You are interviewing for a front-end role. Design a web application similar to a ChatGPT chat experience. The interviewer expects a front-end...
Explain differences between Python list and tuple
In Python, what are the key differences between a list and a tuple? Cover: - Mutability and implications - Performance and memory considerations (high...
Evaluate Smart Wait Launch Impact
A ride-hailing or autonomous-vehicle product launches a feature called Smart Wait. Before a user confirms a ride, Smart Wait shows a more conservative...
How to test account ranking change
A product team is evaluating a change to the account switcher in a multi-account app. Current experience: - When a user opens the account switcher, ac...
Protect SLA and Choose Storage
You own a service that calculates delivery-order payments from order lifecycle events. Discuss two design questions: 1. If an upstream dependency sudd...
Design browser history across tabs
Design a browser-history component. Start with a single tab and support these operations: - visit(url): navigate to a new URL from the current page. I...
Count Referral Descendants
You are building a referral analytics feature. Each referral relationship is represented as a directed pair (referrer, referredUser), meaning referrer...
Explain precision/recall and compute NN output
You are given a short ML fundamentals assessment with three parts. Part A — Precision/Recall/F1 A binary classifier on a dataset produced the followin...
Implement local maxima, bagging, and k-means
You have 70 minutes for three programming tasks. Task 1 — Find local maxima Given an integer array a of length n (1 <= n <= 2e5), return all indices i...
Describe your most memorable bug and fix
Tell me about the most memorable/impactful bug you encountered in a project. Include: - What the system/project was and your role - How the bug manife...
Explain metrics, regularization, and ablation studies
You are interviewing for an Applied Scientist role. 1) For a binary classification problem, explain the following and when you would use each: - Preci...
Find Windows Containing a Target
You are given a list of windows, where each window is represented as an inclusive integer interval [start, end], and an integer target. Return all win...
Fairly Distribute Money With Limits
Fairly Distribute Money With Limits You are given an integer amount representing a total sum of money to distribute, and a list of employees. Each emp...
Design multi-tab browser history and trade-offs
Design: Multi-Tab Browser History Context: Extend a single-tab browser-history component into a multi-tab manager that supports opening/closing tabs, ...
Design a thread-safe bounded queue
Design a Thread-Safe Bounded MPMC Queue with Timeouts and Fairness Context You are building a reusable, in-memory, bounded queue that supports multipl...
Find next terms in sequences
Pattern Recognition: Find the Rule and Next Term You are given 8 number sequences. For each sequence: - Identify a clear rule that generates the terms...
Design an On-Demand Delivery Platform
Design an on-demand local delivery marketplace for restaurants or grocery stores. The platform should support customers browsing merchants, building s...
Design a Real-Time Auction Platform
Design a real-time online auction platform. Users can browse an auction, submit bids, and see the current highest bid and bid history update live. Tra...
Explain SHAP in an ML System
Describe how you would build an end-to-end machine learning system for a business use case such as churn prediction, ad conversion prediction, or cont...
Compute Gaussian Probability and Regression Coefficients
You are given two independent standard normal random variables, X and Y. 1. Compute P[X > 3Y]. 2. In ordinary linear regression with design matrix X i...