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."
Simulate robot moves on a grid
You are given an m x n grid and a robot that starts at position (r, c) (0-indexed). You are also given a string commands consisting of characters 'U',...
Demonstrate project impact and teach something
In a hiring-manager or behavioral interview: 1. Pick one recent project and explain: - the problem and why it mattered, - your role and scope, ...
Derive MLE and Bayesian posterior for Bernoulli
Bernoulli/Binomial Inference Task You observe n independent Bernoulli trials with unknown success probability p, and you record k successes (so K ~ Bi...
Count anagram-based replacements per phrase
Problem You are given: - phrases: a list of strings, where each string is a phrase containing words separated by single spaces. - words: a list of str...
Design a house-price prediction model
Problem You are asked to build a model to predict house sale prices for a city of your choice. Data (assume typical real-estate fields) You have a his...
Match readings with latest same-city humidity
Problem You are given two time-sorted lists of sensor readings: - Temperature records: (time, city, reading) - Humidity records: (time, city, reading)...
Explain your VLM project end-to-end
You are asked to deep-dive (“resume grilling”) on a Vision-Language Model (VLM) project listed on your resume. Cover the following clearly and concret...
Simulate bubble elimination and maximize common prefix
You are given two independent coding tasks (as in a multi-question OA). Solve each. Task A — Grid “bubble/candy” elimination simulation You are given ...
Explain Bootstrap and Prove Uniformity
You are interviewing for a Data Scientist role. Answer the following statistics-theory prompts: 1. What is the bootstrap, when would you use it, and c...
Answer multi-round grid and data-structure questions
You are given several independent interview-style coding questions. 1) Find first/last occurrence in sorted array (+ dynamic updates follow-ups) Given...
Design an Enterprise Tool-Using Agent
Design an enterprise LLM agent that can use external tools to complete multi-step business tasks. Assume the agent may call tools such as document ret...
Answer leadership scenarios about influence and integrity
Answer the following behavioral questions with concrete examples (use STAR: Situation, Task, Action, Result): 1. Describe a time you convinced others ...
Construct a BST and read spiral order
The coding round reportedly included two algorithmic tasks: 1. Rebuild a binary search tree from a preorder sequence - You are given an array of di...
Build a fair loan classifier
You are given a dataset of loan applicants. Each row represents one loan application and contains applicant attributes, loan attributes, and a binary ...
Fetch Public S3 Object Metadata
In Node.js, using AWS SDK for JavaScript v3, write a program that accesses the public S3 bucket coderbytechallengesandbox in region us-east-1 without ...
Solve two online assessment problems
An online assessment contained two coding problems: 1. Maximize skipped positions You are given an array of length n indexed from 0 to n - 1. Start...
Solve Two OA Algorithm Problems
Problem 1: Maximize Pipeline Throughput A pipeline contains n services connected in series. The overall pipeline throughput is the minimum throughput ...
Simulate round-robin package assignment to servers
You are simulating a round-robin dispatcher across m servers labeled 0..m-1. - Each server i has an initial remaining capacity cap[i] (a non-negative ...
Find a valid course order from prerequisites
You are given numCourses labeled from 0 to numCourses-1 and a list of prerequisite pairs prerequisites, where each pair [a, b] means you must complete...
Design auth, session security, and top-N users
Web App Design: Authentication, Security, and Top-N Active Users Context: Build a browser-based web application where a user signs in and the page dis...