Interview Questions
Practice the exact questions companies are asking right now.
Questions
9.8k
Companies
511
Updated
08.16.2026
9.8k Questions 511 Companies08.16.2026
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
Data ScientistAnalyze User Engagement with SQL Queries
events +----------+---------+---------------------+ | event_id | user_id | event_time | +----------+---------+---------------------+ | 1 ...
Data Manipulation (SQL/Python)
104
0
275 people solved
Aug 4, 2025
Medium
Data ScientistCompute 3-Day Rolling Revenue Averages with Pandas
sales +------------+-----------+-------+---------+ | date | product_id| units | revenue | +------------+-----------+-------+---------+ | 2023-01...
Data Manipulation (SQL/Python)
100
0
460 people solved
Aug 4, 2025
Medium
Data ScientistAnalyze Monthly Prime vs Non-Prime Sales and Price Buckets
sales +-----------+------------+----------+-------+ | order_id | order_date | is_prime | price | +-----------+------------+----------+-------+ | 1001...
Data Manipulation (SQL/Python)
82
0
256 people solved
Aug 4, 2025
Medium
Data ScientistCompare RNNs and Transformers for Long-Sequence Text Classification
Compare RNNs and Transformers for Long-Sequence Text Classification Scenario You are designing a long-sequence text classification system under tight ...
Machine Learning
48
0
102 people solved
Aug 4, 2025
Medium
Data ScientistImplement BFS to Find Shortest Path in Graph
Scenario Social network needs to compute the shortest friend-distance between two users in an undirected graph containing millions of nodes. Question ...
Coding & Algorithms
13
0
27 people solved
Aug 4, 2025
Medium
Data ScientistCreate Country-Level Spend Report Using Pandas
users +---------+---------+ | user_id | country | +---------+---------+ | 1 | US | | 2 | CA | | 3 | US | +---------+-...
Data Manipulation (SQL/Python)
82
0
195 people solved
Aug 4, 2025
Medium
Data ScientistList Transactions During Active 'Gold' Membership Period
customer_profile +-------------+----------------+--------------------+-------------------+ | customer_id | membership_type| membership_start_date| mem...
Data Manipulation (SQL/Python)
70
0
188 people solved
Aug 4, 2025
Medium
Data ScientistImplement and Analyze 'Merge k Sorted Lists' Algorithm
Scenario Algorithm coding challenge during the final interview round. Question Implement LeetCode 23 ‘Merge k Sorted Lists’ and explain your complexit...
Coding & Algorithms
18
0
47 people solved
Aug 4, 2025
Medium
Data ScientistDesign a Scalable, Fault-Tolerant Distributed Order System
Scenario Round covering distributed-system design and algorithm implementation. Question Design a highly available, low-latency distributed order-proc...
Coding & Algorithms
23
0
65 people solved
Aug 4, 2025
Medium
Data ScientistDetermine Top Advertisers by Conversion Rate and CTR Analysis
ads +-------+---------------+------------+ | ad_id | advertiser_id | created_at | +-------+---------------+------------+ | 1 | 101 | 202...
Data Manipulation (SQL/Python)
78
0
127 people solved
Aug 4, 2025
Medium
Data ScientistOptimal Stopping for Die Rolls That Bust on Perfect Squares
You repeatedly roll a fair six-sided die and keep a running cumulative sum $S$ of all the values rolled so far (starting from $S = 0$ before the first...
Coding & Algorithms
0
0
5 people solved
Aug 3, 2025
Medium
Data ScientistTwo Opaque Boxes: Place or Take for Maximum Expected Payoff
You are playing a one-player game with two opaque boxes, both of which start empty. The game lasts exactly 100 turns, and on every turn you must choos...
Coding & Algorithms
0
0
10 people solved
Aug 3, 2025
Medium
Data ScientistFind available reservation time slots
Problem You are building an API to show which time slots are available for booking at a restaurant. You are given: - The restaurant’s opening hours (p...
Coding & Algorithms
12
0
101 people solved
Aug 2, 2025
Medium
Software EngineerOptimize password transform and discount scheduling
Optimize password transform and discount scheduling Part 1 — Transform to palindromic k-periodic string: Input: a lowercase string currentPassword and...
Coding & Algorithms
15
0
134 people solved
Aug 1, 2025
Medium
Software EngineerDesign user communication manager APIs
Design user communication manager APIs In-Memory Communication Manager (Bidirectional Sessions) Goal Design a lightweight, in-memory manager that trac...
System Design
3
0
43 people solved
Aug 1, 2025
Medium
Software EngineerSolve budget queries and shortest path
1) Budgeted purchases with sorted array: You are given an array prices of n positive integers and q budget queries. For each budget B, you may buy ite...
Coding & Algorithms
2
0
49 people solved
Aug 1, 2025
Medium
Software EngineerParse Markdown Links Without Regex
Implement a function that converts simplified link syntax text into an HTML anchor tag <a href="url">text</a> across an entire input string. Constrain...
Coding & Algorithms
13
0
103 people solved
Aug 1, 2025
Medium
Data EngineerWrite SQL for Transactions and Customers
You are given two tables: - customers(customer_id INT PRIMARY KEY, signup_date DATE, region VARCHAR, segment VARCHAR) - transactions(transaction_id IN...
Data Manipulation (SQL/Python)
0
0
6 people solved
Aug 1, 2025
Medium
Software EngineerCompute longest palindromic subsequence
Given a string s (1 ≤ |s| ≤ 2000), implement a function that returns the length of the longest subsequence of s that reads the same forward and backwa...
Coding & Algorithms
1
0
25 people solved
Aug 1, 2025
Medium
Data EngineerReturn top-3 content per category
Given a collection of items with fields (content_id, category, rating), implement top_k_by_category(items, k= 3) that returns, for each category, the ...
Data Manipulation (SQL/Python)
1
0
3 people solved
Aug 1, 2025