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."
Scale Game of Life to huge matrices
You are given starter code for computing one step of a Game of Life–style cellular automaton on a binary grid, but the naive implementation loads the ...
Implement cursor-based query pagination
You are building a small in-memory database that stores rows with the following fields: - id (string, unique) - score (integer) - payload (string) You...
Build a sortable, searchable movie list UI
Frontend coding: Movie list with sort and search Build a small UI that displays a list of movies loaded from a JSON endpoint. Data source - Load movie...
How to prepare for a hiring manager round
You have an upcoming hiring manager (HM) / behavioral interview round (plus a separate HR round) for a quantitative/tech role. Question 1. What does a...
Implement K-means clustering from scratch
Task Implement K-means clustering from scratch (no ML libraries). You are given a dataset of points: - Input: an array X of shape (n, d) (n points, ea...
Answer why Jane Street
HR Screen Behavioral Question: Why Jane Street? You are interviewing for a Software Engineer role. In 60–90 seconds, explain: 1. Why Jane Street speci...
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...
List regularization methods and trade-offs
Question: Compare Regularization Techniques and When to Use Them Context: You are interviewing for a machine learning engineering role and are asked t...
Find a secret word using match feedback
You are given a list of unique words, each with the same length (e.g., 6 lowercase letters). One of these words is the secret. You can repeatedly make...
Evaluate AI-assisted ad creation
A company is launching an AI-assisted ad creation feature for advertisers. The tool helps advertisers generate ad copy and creatives, and the team wan...
Answer impact, disagreement, and motivation questions
You are in a 30-minute hiring-manager screen for a senior/staff-level individual contributor role. The manager asks several behavioral questions. Prov...
Explain your career and flagship project
Walk through your background from university to your current role. For each major transition, explain why you made that choice, what challenge you fac...
Solve Stack and String Shift Problems
You are asked to solve two independent coding problems. Problem 1: Validate Delimiter Pairs Given a string s containing only the characters (, ), {, }...
Simulate Transaction Lock Scheduling
Implement an in-memory transaction lock simulator. You do not need to create real threads; you only need to simulate how transactions acquire locks, b...
Evaluate marketplace interventions
You are a data scientist at a two-sided delivery marketplace. Answer the following product analytics and experimentation cases. For each case, define ...
Implement bagging with decision trees
Implement a simple bagging (bootstrap aggregating) classifier that uses decision trees as base learners. You are given a template with a DecisionTree ...
Design a Checkers Game Simulator
Design and partially implement an object-oriented simulator for a two-player checkers-like board game. Requirements: - The game is played on an 8 x 8 ...
Compute monthly signups, conversion, and YoY growth
You work at a subscription company and are given a user-level table. Table company_users - id (INT, PK) — user/customer id - signup_date (DATE) — date...
Explain ETL schema changes and ensure integrity
Behavioral / Data Engineering Discussion Prompts You’re interviewing for a Data Engineer role. Answer the following prompts with concrete examples fro...
Implement Buffer Parsers and Generic Map Class
In C++, complete the following two independent implementation tasks. 1. Sequential buffer reader You are given a raw byte buffer and a current poin...