Interview Questions
Practice the exact questions companies are asking right now.
Questions
10.0k
Companies
520
Updated
08.21.2026
10.0k Questions 520 Companies08.21.2026
PLTCHK
"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"
_The_TaNk_
"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"
ChrisSenior SWE, LinkedIn
"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."
sleepy33
"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."
JakeSenior ML Engineer, Lyft
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
nuggetlord
"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."
CarlosFull Stack, Shopify
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
boba.tea.vibes
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
AndySWE-II, Google
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
couchpotato99
"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."
ShrutiData Engineer, Salesforce
"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."
midnightramen
"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."
BiancaFrontend Eng, Figma
"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."
tambrahm007
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
toa
"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."
Showing 20 results
Role
Medium
Machine Learning Engineer AI LockedImplement a Capacity-Bounded Cache
This question evaluates a candidate's ability to design and implement an efficient capacity-bounded in-memory key-value cache, assessing understanding...
Coding & Algorithms
6
0
72 people solved
Feb 3, 2026
Medium
Software Engineer LockedDesign a voting counter for restaurants
This question evaluates familiarity with hash-table–based counting, efficient update and lookup operations, handling of ties with a deterministic tie-...
Coding & Algorithms
4
0
34 people solved
Feb 2, 2026
Medium
Technical Program ManagerDesign and evaluate Snap recommendations
You are interviewing for a Technical Program Manager, ML Platform role at Snap. Explain the key ML evaluation and experimentation concepts a TPM shoul...
Product Design & Strategy
7
0
69 people solved
Jun 12, 2025
Easy
Data ScientistCompute article-type diversity per user and histogram
You track article views and article metadata. Tables article_views - user_id INT - article_id INT - view_date DATE articles - article_id INT (PK) - ar...
Data Manipulation (SQL/Python)
5
0
41 people solved
Feb 1, 2026
Medium
Data ScientistEvaluating the Impact of Duplicate and Stolen Posts on a Content Platform
Evaluating the Impact of Duplicate and Stolen Posts on a Content Platform You are a data scientist at a large user-generated-content platform (think a...
Analytics & Experimentation
0
0
10 people solved
Feb 1, 2026
Medium
Data ScientistPosts and Replies Engagement
Posts and Replies Engagement A content platform stores user-generated posts and the replies that those posts receive. You need to answer two questions...
Data Manipulation (SQL/Python)
0
0
8 people solved
Feb 1, 2026
Easy
Software EngineerDescribe Over-Engineering and UX Wins
After a project deep dive, the interviewer asked two behavioral questions: 1. Describe a time when you designed or implemented something that became m...
Behavioral & Leadership
3
0
59 people solved
Feb 1, 2026
Medium
Software Engineer LockedSolve Four Interview Coding Problems
This question set evaluates algorithmic problem-solving skills including graph traversal and itinerary reconstruction, time-sorted search and binary s...
Coding & Algorithms
8
0
61 people solved
Feb 1, 2026
Medium
Software EngineerDescribe conflict resolution and leadership
In a senior software engineering phone screen, you may be asked several behavioral questions around collaboration, conflict management, and leadership...
Behavioral & Leadership
2
0
45 people solved
Feb 1, 2026
Medium
Data ScientistMove zeros to the front
Given an integer array nums, move all elements equal to 0 to the beginning of the array while preserving the relative order of all non-zero elements. ...
Coding & Algorithms
4
1
56 people solved
Feb 1, 2026
Medium
Software Engineer LockedImplement JavaScript utility and API functions
This question evaluates JavaScript fundamentals including string and numeric operations, array transformation and grouping, functional concepts such a...
Coding & Algorithms
2
0
31 people solved
Feb 1, 2026
Hard
Software Engineer LockedDesign stack with O(1) minimum query
This question evaluates understanding of stack-based data structures, constant-time operation constraints, and handling edge cases such as empty queri...
Coding & Algorithms
57
0
433 people solved
Feb 1, 2026
Medium
Machine Learning EngineerDesign a chunking strategy for RAG
You are building a Retrieval-Augmented Generation (RAG) system that uses an LLM plus a vector database. Before creating embeddings and indexing docume...
ML System Design
9
0
77 people solved
Sep 24, 2025
Medium
Software EngineerDesign a Rate Limiter with Per-User Token Quotas
Design a Rate Limiter with Per-User Token Quotas Design a distributed rate limiter for a high-traffic API platform, with one twist that drives the who...
System Design
2
0
28 people solved
Sep 23, 2025
Medium
Software EngineerDesign a Rolling Event Counter
Design an in-memory rolling event counter. The counter should support two operations: - record(timestamp): record one event at the given timestamp, me...
Software Engineering Fundamentals
9
0
68 people solved
Jan 30, 2026
Medium
Software EngineerSolve Prime Jumps and Pipeline Scaling
An online assessment contains two independent coding problems. Solve both. Problem 1: Prime-Constrained Score Jump You are given an integer array scor...
Coding & Algorithms
4
0
44 people solved
Jan 30, 2026
Hard
Machine Learning EngineerFind Maximum Path Sum in N-ary Tree
You are given the root of an N-ary tree. Each node contains an integer value and a list of zero or more children. A path is a sequence of nodes where ...
Coding & Algorithms
2
0
34 people solved
Jan 30, 2026
Medium
Software Engineer LockedDesign a Recoverable Iterator
This question evaluates data-structure and state-management skills, focusing on iterator semantics, snapshotting/restore mechanics, and efficient time...
Coding & Algorithms
3
0
36 people solved
Jan 30, 2026
Easy
Software EngineerImplement three whiteboard coding tasks
The interview report described several coding questions in the same category: 1. Binary search: Given a sorted array of integers and a target value, r...
Coding & Algorithms
2
0
29 people solved
Jan 30, 2026
Medium
Data Scientist LockedHow should Uber evaluate lower ETA?
This question evaluates competency in metrics design, causal inference, and experiment strategy for two-sided marketplaces, including detecting and ad...
Analytics & Experimentation
7
0
48 people solved
Jan 30, 2026