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
Software EngineerDesign Stock Price Alerts
Design a stock price alert system that allows users to create alerts for securities and receive notifications when the market price crosses a specifie...
System Design
12
0
224 people solved
Dec 28, 2025
Medium
Software EngineerIntern LockedMaximize 1D deliveries within distance and minimize total distance
This question evaluates combinatorial optimization and constrained matching skills, focusing on reasoning about distance-based pairings, lexicographic...
Coding & Algorithms
7
0
81 people solved
Dec 27, 2025
Medium
Machine Learning EngineerConnect-N on an Infinite Board with Gravity
You are asked to implement a variant of the classic Connect Four game, played on an unbounded board. Game Rules - The board consists of vertical colum...
Coding & Algorithms
1
0
17 people solved
Dec 26, 2025
Medium
Software EngineerMaximize non-adjacent sum on an N-ary tree
You are given an N-ary tree (each node may have 0..k children). Each node contains an integer value (can be 0 or positive). You want to select a set o...
Coding & Algorithms
28
0
288 people solved
Dec 26, 2025
Medium
Software EngineerSenior+ LockedCompute graph distance and impacted services
This question evaluates proficiency in graph algorithms and traversal (shortest-path/BFS and cycle handling), file-path/tree modeling, dependency grap...
Coding & Algorithms
15
0
164 people solved
Dec 26, 2025
Hard
Software EngineerFind cheapest flight with at most K stops
Problem You are given a directed weighted graph representing flights between cities. Inputs - An integer n: number of cities, labeled 0..n-1. - A list...
Coding & Algorithms
8
0
79 people solved
Dec 25, 2025
Medium
Software EngineerImplement cloud storage with quotas and compression
Problem Implement an in-memory cloud storage service that supports multiple users, per-user storage quotas, changing quotas with eviction, and file co...
Coding & Algorithms
22
0
217 people solved
Dec 25, 2025
Easy
Software EngineerImplement a multi-rover Mars controller
Problem Build a small command-line “Mars Rover Controller” program. Single rover (v1) A rover starts at coordinate (0, 0) on an infinite 2D grid and i...
Coding & Algorithms
34
0
383 people solved
Dec 23, 2025
Medium
Software EngineerCan the character reach the destination?
You control a character starting at a start cell and want to reach a target cell in a 2D grid. Some cells are blocked by obstacles and cannot be enter...
Coding & Algorithms
9
0
100 people solved
Dec 21, 2025
Medium
Software EngineerImplement timestamped task management system APIs
You are implementing an in-memory Task Management System. All API methods are called with a timestamp representing the logical time when the operation...
Coding & Algorithms
25
0
223 people solved
Dec 21, 2025
Medium
Machine Learning EngineerSolve stock and banana problems
Solve both coding problems below. 1. Maximum single-transaction stock profit: Given an array prices where prices[i] is the stock price on day i, retur...
Coding & Algorithms
3
0
42 people solved
Dec 17, 2025
Medium
Software EngineerSenior+Describe a recent innovation you delivered
Behavioral question: “Tell me about a recent innovation you delivered.” Include: - What problem/opportunity you identified - What was novel about your...
Behavioral & Leadership
2
0
32 people solved
Dec 17, 2025
Hard
Software EngineerSenior+Implement User Sessionization From Event Stream
You are building a backend data-processing component that consumes a stream of newline-delimited JSON events. Each event represents a user sending a m...
Coding & Algorithms
1
0
21 people solved
Dec 16, 2025
Medium
Software EngineerCompute courier pay and implement load balancing
Problem 1: Compute courier (delivery driver) pay You are given a sequence of delivery-related events for a courier during a day. Your task is to compu...
Coding & Algorithms
121
0
949 people solved
Dec 16, 2025
Medium
Software EngineerAnswer four string/array/battery coding questions
You are given four independent coding questions. Problem A — Uppercase vs lowercase count difference Given a string s (ASCII), count how many characte...
Coding & Algorithms
4
0
46 people solved
Dec 16, 2025
Hard
Software EngineerImplement binary encode/decode with frequency tree
Problem Implement a binary encoding and decoding scheme for strings based on character frequencies (Huffman-like coding). You must implement two funct...
Coding & Algorithms
8
0
132 people solved
Dec 15, 2025
Easy
Software EngineerImplement an LRU cache
Problem: LRU Cache Design and implement a data structure that supports an LRU (Least Recently Used) cache with a fixed capacity. Requirements Implemen...
Coding & Algorithms
5
0
74 people solved
Dec 15, 2025
Easy
Software EngineerFind a special person using knows(a,b)
Problem You are given n people labeled 0 to n-1 at a party. You can call an API: - knows(a, b) -> bool: returns true if person a knows person b, other...
Coding & Algorithms
13
0
102 people solved
Dec 15, 2025
Medium
Machine Learning EngineerNew GradWrite a generator for substring pattern matches
Problem Write a generator that scans a string and emits a value whenever a substring matches a given pattern. Input - A string s - A string pattern (n...
Coding & Algorithms
6
0
125 people solved
Dec 15, 2025
Medium
Machine Learning EngineerNew GradImplement TF-IDF scoring for documents
Problem Implement a simplified TF–IDF scorer. You are given: - A list of documents docs, where each document is a string. - A query string q. Tokeniza...
Coding & Algorithms
7
0
71 people solved
Dec 15, 2025