Machine Learning Engineer + Data Scientist + Software Engineer 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 Top Dasher experiment with interference
Practice designing an interference-aware experiment for a Top Dasher incentive program in a delivery marketplace. The solution covers goal setting, zo...
Find Shortest Clear Grid Path
Given an n x n binary grid, where 0 means open and 1 means blocked, return the length of the shortest clear path from the top-left cell to the bottom-...
Find the Slowest Function from Profiler Events
You are given a time-ordered profiler event log for a single-threaded program. Each event is one of: - START functionName timestamp: execution enters ...
Design a Fixed-Capacity Least-Recently-Used Cache
Design a Fixed-Capacity Least-Recently-Used Cache Design and implement a cache with a fixed maximum capacity that evicts the least recently used entry...
Implement in-memory database insert and delete operations
Design and implement a simple in-memory database (key-value store) that supports the following operations: - insert(key, value): Insert a key-value pa...
Find Longest Increasing Continuous Subarray
Solve the longest increasing contiguous subarray problem in one pass. Includes Python code, edge cases, complexity, and a follow-up for returning the ...
Compute tree right view and target-sum subarrays
You are given two separate programming tasks. --- Task 1: Right-side view of a binary tree You are given the root of a binary tree. Imagine standing o...
Determine Reachability in Train Schedule
You are given a train schedule represented as a list of train routes. Each route is a list of station names, where the element at index t is the stati...
Implement IPv4 and CIDR iterators
This question evaluates understanding of IPv4 addressing and CIDR notation, along with competency in binary/bitwise arithmetic, iterator construction,...
Count super-streak segments in an event stream
You are given a time-ordered sequence of events. Each event has: - type, a string or integer event type. - ts, an integer timestamp in milliseconds or...
Streaming Equivalence of Two Trade Feeds with Per-Company Ordering
A market-data system receives trade events from two independent feeds. Each event is a pair (company, trade_id) identifying one trade for one company....