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 EngineerHandle invalid Lisp expression parsing
Question LeetCode 736. Parse Lisp Expression – Given a string representing a Lisp-like expression containing let/add/mult operations and variable bind...
Coding & Algorithms
2
0
50 people solved
Aug 4, 2025
Medium
Software EngineerSolve palindrome pairs and key path
Question LeetCode 336. Palindrome Pairs; LeetCode 864. Shortest Path to Get All Keys https://leetcode.com/problems/palindrome-pairs/description/ https...
Coding & Algorithms
8
0
14 people solved
Aug 4, 2025
Medium
Software EngineerSolve Open the Lock BFS
Question LeetCode 752. Open the Lock – Given an initial lock state "0000", a target combination, and a list of deadend combinations that cannot be use...
Coding & Algorithms
4
0
65 people solved
Aug 4, 2025
Medium
Software EngineerDelete duplicate files via DFS
Question LeetCode 609. Find Duplicate File in System – Implement an algorithm (using DFS/backtracking) to delete files with duplicate content in a fil...
Coding & Algorithms
12
0
34 people solved
Aug 4, 2025
Medium
Software EngineerSolve sliding-window and heap problems
Question Design an algorithm using a sliding window to compute the maximum sum of any contiguous subarray of length k; explain time- and space-complex...
Coding & Algorithms
28
0
101 people solved
Aug 4, 2025
Medium
Software EngineerFind duplicate files by size
Question LeetCode 609. Find Duplicate File in System — find duplicate files using file size instead of content comparison https://leetcode.com/problem...
Coding & Algorithms
15
0
116 people solved
Aug 4, 2025
Medium
Software EngineerSolve Rotting Oranges and Bus Walk Reachability
Question LeetCode 994. Rotting Oranges. 2) Given start and end grid coordinates, an integer k (maximum walking distance), and a bidirectional graph of...
Coding & Algorithms
4
0
38 people solved
Aug 4, 2025
Medium
Software EngineerCompute max-ons and deletion indices
Question Given a circular array of n computers represented by 0 (off) and 1 (on), determine the maximum possible number of on computers within any con...
Coding & Algorithms
17
0
46 people solved
Aug 4, 2025
Hard
Software EngineerDesign notification and project architecture
Design notification and project architecture System Design: Multi-Channel Notification Platform Design a scalable Notification System that supports re...
System Design
10
0
124 people solved
Aug 4, 2025
Medium
Software EngineerSolve odd-string, digit swap, patient slot assignment
Question Task 1 – Odd-occurrence string: Write a function that, given an integer N (1..200 000), returns a length-N lowercase string in which every le...
Coding & Algorithms
4
0
74 people solved
Aug 4, 2025
Medium
Software EngineerMerge overlapping intervals
Question LeetCode 56. Merge Intervals – Given a collection of intervals, merge all overlapping intervals into one and return an array of the non-overl...
Coding & Algorithms
23
0
218 people solved
Aug 4, 2025
Medium
Data ScientistCalculate Longest Transaction Streak for Each User
transactions +---------------+---------+--------+----------------+-----------+----------+ | transaction_id| user_id | amount | transaction_date| merch...
Data Manipulation (SQL/Python)
0
0
8 people solved
Aug 4, 2025
Medium
Data ScientistSolve Data-Structure Problems in Python Interview Round
Scenario Interview coding round focusing on simple data-structure problems in Python. Question Given an integer, rearrange its digits (considering onl...
Coding & Algorithms
4
0
47 people solved
Aug 4, 2025
Medium
Data ScientistAnalyze Bookstore Data to Identify Top Payment Methods
books +---------+------------+----------+-------+ | book_id | title | author_id| price | +---------+------------+----------+-------+ | 1 | ...
Data Manipulation (SQL/Python)
0
0
5 people solved
Aug 4, 2025
Medium
Data ScientistCalculate Jaccard Similarity Score for Two String Lists
Scenario During pair programming, the interviewer asks you to compare two lists of merchant tags and quantify their similarity. Question Implement a P...
Coding & Algorithms
11
0
148 people solved
Aug 4, 2025
Medium
Data ScientistDetermine Growth of Pirated Theme Installations Over Years
merchants +-------------+------------+ | merchant_id | join_date | +-------------+------------+ | 1 | 2020-01-02 | | 2 | 2020-03-...
Data Manipulation (SQL/Python)
1
0
8 people solved
Aug 4, 2025
Medium
Data ScientistIdentify Repeat Advertisers from Consecutive Weeks
SUBMISSIONS +--------------+-----------+-----------+ | advertiser_id| ad_id | week_id | +--------------+-----------+-----------+ | A123 ...
Data Manipulation (SQL/Python)
0
0
3 people solved
Aug 4, 2025
Medium
Data ScientistCalculate Top Countries' Gmail Usage and MoM Change
emails +----+---------+-----------+-----------+------------+ | id | user_id | country | provider | send_date | +----+---------+-----------+-------...
Data Manipulation (SQL/Python)
0
0
4 people solved
Aug 4, 2025
Medium
Data ScientistCalculate Second-Degree Followers for Each YouTuber
following +----------+----------+ | YouTuber | follower | +----------+----------+ | A | B | | A | C | | B | D ...
Data Manipulation (SQL/Python)
0
0
7 people solved
Aug 4, 2025
Medium
Data ScientistAnalyze Retention Metrics Using SQL and Python
transactions +----------+--------+------------+---------+-----------+ | user_id | txn_id | txn_date | amount | is_fraud | +----------+--------+--...
Data Manipulation (SQL/Python)
0
0
10 people solved
Aug 4, 2025