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."
Solve two set and graph problems
Implement solutions for the following two data-structure / algorithm problems. --- Problem 1: Friend-purchase recommendations You are given three enti...
Compare audio preprocessing and training
Suppose you are building an audio model for a voice assistant. Compare common audio data preprocessing approaches and explain their trade-offs. For ex...
Find Feature Activation Order
You are building a feature-flag system for a product. There are n features labeled 0 to n - 1. Each dependency pair [a, b] means feature a depends on ...
Design a rate limiter
Design a rate limiting system for an API gateway. Your design should address: - Rate limits such as "N requests per second/minute" per key (e.g., per ...
Compute DID estimate and pretrend flag
You are given three equal-length arrays describing observations from a panel-like dataset: - period[i] ∈ {0,1}: 0 = pre period, 1 = post period - trea...
Wildcard Dictionary Matching
Wildcard Dictionary Matching You are given a list of words (a dictionary) and a single search pattern. Return every word in the dictionary that the pa...
Find Shortest Paths in Road Network
You are reviewing code for a road-network graph. The domain objects are: `java class Location { String name; Location(String name) { this.name...
Design an online chess platform
Design an online chess platform. Requirements: - User matchmaking (ranked/unranked). - Real-time gameplay with low latency moves. - Enforce game rules...
Walk through your background and proud project
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Write SQL to compute campaign net revenue
Using the schema and sample data below, write SQL to produce, for each campaign_id and segment, the following metrics for August 2025: total_reached, ...
Write monthly touches and last-touch SQL
You have two tables tracking marketing touches and downstream conversions. Write SQL to answer the three prompts below. Assume a warehouse like Postgr...
Handle an irate passenger after flight delay
Role-Play: Irregular Operations Recovery and Communication Plan Scenario - A flight is delayed 5 hours due to a crew time-out cascading from weather a...
Design robust primary and guardrail metrics
Experiment Metric Design, Guardrails, and Power for a 14-Day A/B Test Context You are testing a newly launched, guest-facing booking feature in a glob...
Implement Linear Regression Gradient Descent
Implement simple linear regression from scratch using batch gradient descent. Given training data with one input feature x and target y, fit a model o...
Explain container image flow in CI/CD
Scenario Walk through what happens in a typical CI/CD pipeline that builds and deploys a containerized service. Questions 1. During CI, how is a conta...
Answer SDET internship behavioral interview questions
You are interviewing for an SDET Intern role. Prepare structured answers for the following behavioral prompts: 1. Tell me about your most recent inter...
Implement an in-memory database with TTL and backup
In-Memory Database (Levels 1–4: TTL and Backup/Restore) Implement an in-memory database that stores records identified by a string key. Each record co...
Answer range queries for alternating parity subarrays
Problem You are given an integer array nums of length n and q queries. Each query is a pair [l, r] (0-indexed, inclusive). A subarray nums[l..r] is ca...
Explain PD model validation steps
Explain PD model validation steps Validate a Newly Developed Probability of Default (PD) Model Context Assume you have built a retail credit Probabili...
Build a Searchable Sentence Index
Design and implement an in-memory data structure for a collection of sentences. Each sentence has a unique integer id and a text body. Support the fol...