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
Software EngineerIntern LockedMaximize minimum value after k decrements
This question evaluates array-based optimization skills, resource-allocation reasoning under a fixed decrement budget, and algorithmic complexity anal...
Coding & Algorithms
2
0
32 people solved
Jan 22, 2026
Medium
Machine Learning EngineerSenior+ LockedDesign a weapon-ad harmful content detection system
This question evaluates skills in end-to-end system design and applied machine learning for multi-modal harmful content detection, covering scalabilit...
System Design
6
0
70 people solved
Jan 22, 2026
Medium
Machine Learning EngineerSenior+ LockedDeep copy a linked list with random pointers
This question evaluates understanding of linked-list structures, pointer/reference manipulation, deep versus shallow copying, and the ability to analy...
Coding & Algorithms
4
0
70 people solved
Jan 22, 2026
Hard
Software Engineer LockedDecode a password string into letters
This question evaluates string parsing and encoding/decoding skills, specifically mapping numeric tokens and handling delimiter characters within the ...
Coding & Algorithms
16
0
138 people solved
Jan 22, 2026
Hard
Software Engineer LockedEvaluate query ratios from equations
This question evaluates a candidate's skill in modeling variable ratios as relational structures, reasoning about transitive numeric relationships, an...
Coding & Algorithms
10
0
119 people solved
Jan 22, 2026
Medium
Software Engineer LockedBracket substrings matching any pattern
This question evaluates string manipulation and pattern-matching competency, including substring search, prioritization rules for leftmost and longest...
Coding & Algorithms
8
0
78 people solved
Jan 22, 2026
Hard
Software Engineer LockedDesign an async job system and cache layer
This question evaluates system design competencies including asynchronous job orchestration, reliable background processing (state transitions, retrie...
System Design
15
0
151 people solved
Jan 22, 2026
Hard
Software Engineer LockedDesign a cloud database write path and recovery
This question evaluates expertise in designing transactional write paths and crash recovery for cloud-native relational databases that separate comput...
System Design
19
0
169 people solved
Jan 22, 2026
Hard
Software Engineer LockedExplain Aurora-style internals: WAL, MVCC, replication, recovery
This question evaluates knowledge of database storage engine and distributed database internals, covering write-ahead logging, MVCC, replication model...
Software Engineering Fundamentals
6
0
54 people solved
Jan 22, 2026
Hard
Software EngineerSenior+ LockedImplement array and tree traversal tasks
This question evaluates algorithmic problem-solving and data-structure competency, specifically array-based optimization for single-trade profit and t...
Coding & Algorithms
6
0
81 people solved
Jan 22, 2026
Medium
Software EngineerSenior+ LockedDesign a constrained cache and secure string validator
This question evaluates proficiency in data structures and algorithms (constrained cache design), concurrent programming, complexity analysis, and sec...
Coding & Algorithms
5
0
100 people solved
Jan 22, 2026
Medium
Software Engineer LockedScale Game of Life to huge matrices
This question evaluates a candidate's ability to design space-efficient, I/O-aware algorithms and streaming or external-memory techniques for processi...
Coding & Algorithms
3
0
39 people solved
Jan 22, 2026
Medium
Software Engineer LockedValidate JSON against a protobuf-like schema
This question evaluates schema validation and data-typing skills, including understanding of JSON primitive types, recursive message structures, and c...
Coding & Algorithms
1
0
16 people solved
Jan 22, 2026
Hard
Software Engineer LockedReturn a topological ordering of a graph
This question evaluates understanding of graph algorithms—particularly topological sorting and cycle detection—and competency in ordering dependencies...
Coding & Algorithms
4
0
74 people solved
Jan 22, 2026
Medium
Software Engineer LockedDesign playlist with add/remove/shuffle
This question evaluates data structure design and algorithmic complexity skills, focusing on managing dynamic sets, uniform random selection, and aver...
Coding & Algorithms
31
0
222 people solved
Jan 22, 2026
Medium
Software Engineer LockedFlatten a nested JSON object
This question evaluates the ability to traverse and manipulate nested JSON-like structures, emphasizing concepts such as recursion or iterative traver...
Coding & Algorithms
16
0
119 people solved
Jan 22, 2026
Medium
Software Engineer LockedImplement an LRU cache
This question evaluates understanding of data structures and algorithmic optimization for constant-time cache operations, with emphasis on cache evict...
Coding & Algorithms
6
0
71 people solved
Jan 22, 2026
Medium
Software Engineer LockedFilter ads by a single rule
This question evaluates understanding of rule-based filtering for a single-rule ad filter, including set containment for locations, numeric range chec...
Coding & Algorithms
16
0
131 people solved
Jan 22, 2026
Medium
Software Engineer LockedBuild a hit/miss word guessing game
This question evaluates implementation skills in managing stateful systems and data structures for pattern matching, as well as algorithmic and advers...
Coding & Algorithms
8
0
162 people solved
Jan 22, 2026
Medium
Software Engineer LockedScale a file-crawling API using async jobs
This question evaluates a candidate's ability to design scalable, fault-tolerant systems for long-running file-crawl operations, including async job o...
System Design
15
1
140 people solved
Jan 22, 2026