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 ScientistNew Grad LockedCan one car serve all riders?
This question evaluates understanding of interval scheduling and conflict detection, testing skills in time-interval reasoning, sorting, and efficient...
Coding & Algorithms
6
0
71 people solved
Apr 6, 2026
Medium
Machine Learning EngineerNew GradBuild Ranked Feed With Photo Batching
You are given a list of feed objects. Each object has: - id: a unique string - type: one of Normal, Video, or Photo - score: a numeric ranking score C...
Coding & Algorithms
1
0
15 people solved
Apr 5, 2026
Hard
Software EngineerImplement Nested Transactional Key-Value Store
Implement an in-memory key-value store that processes a batch of commands, one command per line. The store must support nested transactions. Supported...
Coding & Algorithms
2
0
25 people solved
Apr 4, 2026
Medium
Software EngineerSolve Balanced Permutations and Tree Reversals
You have 90 minutes to solve the following two independent coding problems. Problem 1: Balanced Prefix Values in a Permutation You are given a permuta...
Coding & Algorithms
10
0
111 people solved
Apr 3, 2026
Hard
Data EngineerImplement Game Metadata Lookups
You are given a list of game metadata records. Build an in-memory representation that can store each game's name, release date, platforms, genre, publ...
Coding & Algorithms
11
0
143 people solved
Apr 3, 2026
Medium
Machine Learning EngineerDesign Hierarchical Permission Checks
You are given a hierarchy of groups represented as a tree, for example World -> Country -> City. Each advertiser can be granted access at any group no...
Coding & Algorithms
2
0
26 people solved
Apr 3, 2026
Hard
Software EngineerImplement a Versioned Key-Value File Store
Implement an in-memory file store that supports progressive requirements. Operations include set(key, value), get(key), delete(key), scan(), scan_pref...
Coding & Algorithms
1
0
11 people solved
Apr 2, 2026
Hard
Machine Learning EngineerSimulate Plant Infection With Controlled Burning
You are given an R by C grid of plants. Each plant is initially healthy, infected, recovered, or dead. A plant has up to four orthogonal neighbors. De...
Coding & Algorithms
2
0
9 people solved
Apr 2, 2026
Medium
Software Engineer AIImplement a Snowflake Query Client
Build a lightweight query client for a Snowflake-like data warehouse. Implement a QueryClient that can: 1. Connect to the warehouse using configuratio...
Coding & Algorithms
6
0
56 people solved
Apr 2, 2026
Hard
Software EngineerSenior+Find Business Degrees of Separation
Implement a feature for a small-business network. QuickBooks has data showing business relationships, such as one business regularly buying goods or s...
Coding & Algorithms
0
0
4 people solved
Apr 2, 2026
Medium
Backend EngineerFind First Anagram Occurrence
Given two strings text and pattern, return the starting index of the first substring in text that is an anagram of pattern. If no such substring exist...
Coding & Algorithms
13
0
132 people solved
Apr 2, 2026
Medium
Software EngineerSenior+Solve substring and worker assignment
The interview included two algorithm problems: 1. Shortest covering substring: Given two strings s and t, return the shortest contiguous substring of ...
Coding & Algorithms
3
0
35 people solved
Apr 2, 2026
Easy
Software EngineerValidate bracket sequence
Given a string s containing only the characters (, ), [, ], {, and }, determine whether the brackets are properly matched. A string is valid if: - Eve...
Coding & Algorithms
6
0
44 people solved
Apr 2, 2026
Medium
Software EngineerSenior+Design a Randomized Multiset
Implement a data structure for integers that allows duplicate values and supports the following operations in expected O(1) time: - insert(val): Add o...
Coding & Algorithms
4
0
43 people solved
Apr 2, 2026
Hard
Software EngineerSolve Knight and Reversal Problems
The online assessment contained two coding problems: 1. Generalized knight shortest path: Given an integer n, consider an n x n chessboard with coordi...
Coding & Algorithms
17
0
114 people solved
Apr 2, 2026
Medium
Software EngineerIntern LockedValidate Bracket Sequence
This question evaluates proficiency with stack data structures, string parsing and matching logic, and the ability to reason about algorithmic time an...
Coding & Algorithms
2
0
19 people solved
Apr 2, 2026
Medium
Software EngineerMerge Sorted Arrays In Place
You are given two non-decreasing integer arrays. - A has length m + n. - The first m elements of A are valid sorted numbers. - The last n elements of ...
Coding & Algorithms
12
0
111 people solved
Apr 2, 2026
Hard
Software EngineerImplement Recipe Storage CRUD
Implement an in-memory RecipeStore that supports CRUD operations for recipes. Each recipe contains: - id: a string identifier in the form recipe<n> - ...
Coding & Algorithms
8
0
82 people solved
Apr 2, 2026
Medium
Machine Learning Engineer AIImplement URL Shortening Codec
Implement a small in-memory URL-shortening component in a pair-programming interview. Expose two methods: shorten(long_url: str) -> str, which returns...
Coding & Algorithms
0
0
3 people solved
Apr 1, 2026
Medium
Software EngineerSenior+ LockedBuild a Fuzzy Keyword Index
This question evaluates string-processing, text-indexing, approximate string-matching, and data-structure design skills for supporting many repeated q...
Coding & Algorithms
1
0
24 people solved
Apr 1, 2026