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
Hard
Data ScientistSmallest Palindrome Strictly Greater Than K
A palindrome is a positive integer whose decimal representation reads the same forwards and backwards, with no leading zeros. For example, 7, 44, 121,...
Coding & Algorithms
0
0
7 people solved
Nov 28, 2025
Medium
Machine Learning Engineer LockedDesign concurrent expiring job registry
This question evaluates understanding of concurrent data structures, synchronization primitives, time-based expiration semantics, and efficient cleanu...
Software Engineering Fundamentals
2
0
29 people solved
Nov 28, 2025
Medium
Data Scientist LockedDerive expected inversions and mean distribution
This question evaluates understanding of permutation inversion statistics, computation of random-variable moments (expectation and variance), and the ...
Machine Learning
5
0
43 people solved
Nov 28, 2025
Medium
Software EngineerImplement simple VM manager with CRUD operations
You are asked to implement a simple in-memory virtual machine (VM) manager that can: - List all VMs - Add (create) a new VM - Modify (update) an exist...
Coding & Algorithms
7
0
70 people solved
Nov 28, 2025
Easy
Software EngineerSolve three coding problems
The interview note described the following coding questions: 1. Find the N-th license plate in lexicographic order - A license plate has exactly 6 ...
Coding & Algorithms
8
0
72 people solved
Jun 15, 2025
Medium
Data EngineerInternCount Special Index Pairs
Given an integer array nums of length n, count the number of index pairs (i, j) such that: - 0 <= i < j < n - nums[i] * nums[j] is even - j - i is odd...
Coding & Algorithms
2
0
42 people solved
Jan 26, 2025
Medium
Software Engineer LockedImplement JSON parsing and HTTP integration tasks
This question evaluates proficiency in JSON parsing, file I/O, HTTP client integration, request/response handling, payload construction, mapping data ...
Coding & Algorithms
10
0
128 people solved
Nov 26, 2025
Medium
Product ManagerDescribe a Product You Led
Tell me about a technical product or feature you led end-to-end. Walk through the situation using STAR, explain the major tradeoffs you evaluated, wha...
Behavioral & Leadership
4
0
77 people solved
Jun 12, 2025
Medium
Data ScientistHow do you expand nested placeholders in strings?
You are given a dictionary of string templates. Keys are identifiers like X, Y, Z. A template may contain placeholders of the form %KEY%, which should...
Coding & Algorithms
3
0
36 people solved
Nov 24, 2025
Medium
Data ScientistHow would you predict a car’s turning intention?
At an intersection, there are n vehicles stopped or approaching. For each vehicle, you have a short history (e.g., last 3–10 seconds at 10 Hz) of: - P...
Machine Learning
7
0
54 people solved
Nov 24, 2025
Easy
Software EngineerHow do you manage collaboration and stakeholders?
Scenario You are interviewing for a Lead Frontend Software Engineer role. Prompt Answer the following leadership/behavioral topics with concrete examp...
Behavioral & Leadership
5
0
82 people solved
Nov 24, 2025
Medium
Software EngineerAdd two big integers from digit lists
You are given two non-empty singly linked lists (or arrays) representing two non-negative integers. The digits are stored in reverse order, and each n...
Coding & Algorithms
11
0
102 people solved
Nov 24, 2025
Medium
Software Engineer LockedDesign an online chess game with undo and leaderboard
This question evaluates proficiency in real-time system design, state management, and concurrency control for multiplayer games, including consistency...
System Design
9
0
63 people solved
Nov 22, 2025
Hard
Software EngineerCount same-color squares in a character grid
You are given a 2D grid (matrix) of characters. Each character represents a color: cells with the same character are considered the same color. Formal...
Coding & Algorithms
13
1
158 people solved
Nov 22, 2025
Medium
Machine Learning EngineerFind two numbers that sum to target
Given an integer array nums of length n and an integer target, return the indices (i, j) (0-based) of two distinct elements such that nums[i] + nums[j...
Coding & Algorithms
2
0
28 people solved
Nov 20, 2025
Medium
Software EngineerBuild blog UI with API data and likes
You are asked to implement a small single-page web application in JavaScript (you may use any modern framework or plain JavaScript) to display and int...
Coding & Algorithms
5
0
47 people solved
Nov 20, 2025
Medium
Machine Learning EngineerImplement sqrt and parity-based array rearrangement
You are given two independent coding tasks. --- Task 1: Implement Square Root Without Math Library Implement a function that computes the square root ...
Coding & Algorithms
8
0
61 people solved
Nov 20, 2025
Medium
Machine Learning EngineerDesign a time-travel key-field store with TTL
Problem Implement an in-memory “database” that stores records by key and fields within each key. Each operation is given a timestamp (integer, non-dec...
Coding & Algorithms
5
0
92 people solved
Nov 19, 2025
Hard
Software EngineerImplement staircase printing and distributed mode/median
Problem A: Print a “staircase” pattern Implement a function that prints a staircase with n rows. Input - An integer n (n >= 1) Output - Print n lines....
Coding & Algorithms
68
0
924 people solved
Nov 19, 2025
Medium
Software EngineerDiscuss proudest project and conflict handling
Answer the following behavioral questions in depth, demonstrating ownership and leadership: 1. Proudest project and ownership - Describe the projec...
Behavioral & Leadership
9
0
67 people solved
Nov 19, 2025