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
Data ScientistHow do you lead and drive impact?
You are interviewing for a senior or tech-lead data scientist role. Prepare to answer the following behavioral prompts with concrete examples from you...
Behavioral & Leadership
4
0
55 people solved
Oct 12, 2025
Medium
Software EngineerCheck if CIDR is fully canceled by rules
You are given: - A target CIDR block T as a string, e.g. "10.0.0.0/16". - A list of rule CIDR blocks. Each rule has: - A type: either "allow" or "de...
Coding & Algorithms
24
0
205 people solved
Dec 8, 2025
Medium
Software EngineerPaginate forward and backward through results
You are asked to extend a basic pagination system to support forward and backward navigation, similar to a cursor-based API. You are given: - A zero-i...
Coding & Algorithms
20
0
177 people solved
Dec 8, 2025
Medium
Software EngineerDescribe how you learn quickly in new domains
Interview-style behavioral question: "Tell me about a time you had to learn something very quickly in order to succeed in a project or role. How did y...
Behavioral & Leadership
17
0
213 people solved
Dec 8, 2025
Easy
Data Scientist LockedDesign a Top Dasher experiment with interference
Practice designing an interference-aware experiment for a Top Dasher incentive program in a delivery marketplace. The solution covers goal setting, zo...
Analytics & Experimentation
11
0
85 people solved
Jul 1, 2025
Medium
Product ManagerAnswer EA PM behavioral prompts
For a Product Manager interview with EA's Plants vs. Zombies studio, prepare concise but compelling answers to first-round HR and written behavioral q...
Behavioral & Leadership
8
0
74 people solved
Jan 5, 2025
Medium
Software EngineerSenior+Design Real-Time Auctions for Social Posts
Design a real-time auction feature for a large social photo and video app. A creator can attach an auction to a post. Viewers can place bids, and ever...
System Design
2
0
28 people solved
Feb 11, 2026
Medium
Machine Learning Engineer LockedDesign a system to detect weapon posts
This question evaluates system design and machine learning engineering competencies, including multi-modal content detection, real-time model serving,...
System Design
8
0
67 people solved
Feb 11, 2026
Hard
Software EngineerCheck if each prefix forms 1..k permutation
You are given an integer array arr of length n that is a permutation of the numbers 1..n (each number appears exactly once), but in arbitrary order. F...
Coding & Algorithms
20
0
206 people solved
Feb 11, 2026
Medium
Software EngineerFind minimum reversals to orient edges away from root
You are given a connected graph with n nodes labeled 0..n-1 and n-1 directed edges. If you ignore edge directions, the edges form a tree. Each directe...
Coding & Algorithms
35
0
251 people solved
Feb 11, 2026
Medium
Software EngineerCompute final prices with next smaller discount
You are given an integer array prices of length n, where prices[i] is the original price of the i-th item. For each item i, find the first index j > i...
Coding & Algorithms
7
0
85 people solved
Feb 11, 2026
Hard
Software Engineer LockedImplement idempotent request handling with idempotency keys
This question evaluates understanding of idempotency semantics, idempotency-key handling, concurrency control, synchronization, and in-memory TTL-base...
Coding & Algorithms
5
0
45 people solved
Feb 11, 2026
Medium
Software Engineer LockedExtend a BFS maze solver stepwise
This question evaluates proficiency in grid-based graph traversal and pathfinding, covering BFS mechanics, stateful reachability with keys and doors, ...
Coding & Algorithms
7
0
53 people solved
Feb 11, 2026
Medium
Software Engineer LockedSolve common interview coding problems
This set evaluates algorithmic problem-solving, data structure selection, and time/space complexity analysis across common patterns such as maximum su...
Coding & Algorithms
10
0
85 people solved
Feb 11, 2026
Medium
Software Engineer LockedCompute sums and max path in N-ary tree
This question evaluates implementation and traversal skills for N-ary tree data structures, including recursion/DFS techniques, aggregation of node va...
Coding & Algorithms
6
0
87 people solved
Feb 11, 2026
Medium
Software Engineer LockedDesign a pipeline orchestration system on Kubernetes
This question evaluates a candidate's ability to design scalable, highly available pipeline and workflow orchestration systems on Kubernetes, emphasiz...
System Design
12
0
122 people solved
Feb 11, 2026
Medium
Software Engineer LockedImplement an LFU cache with O(1) operations
This question evaluates a candidate's ability to design and implement efficient data structures for caching, including understanding frequency-based e...
Coding & Algorithms
5
0
63 people solved
Feb 11, 2026
Hard
Software Engineer LockedCount subarrays with sum equals k
This question evaluates a candidate's competency in array algorithms and reasoning about contiguous subarray sums, including correct handling of negat...
Coding & Algorithms
23
0
173 people solved
Feb 11, 2026
Hard
Software Engineer LockedAnswer suffix maximum-frequency queries
This question evaluates algorithm design skills and array-processing competency for answering repeated queries efficiently, focusing on time and space...
Coding & Algorithms
5
0
100 people solved
Feb 11, 2026
Hard
Software Engineer LockedDetermine escape path with blockers and spreading fire
This question evaluates graph traversal and grid-based pathfinding skills, including connectivity analysis, obstacle handling, and reasoning about tim...
Coding & Algorithms
2
0
45 people solved
Feb 11, 2026