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 EngineerProduce asymmetric side views of a binary tree
Produce asymmetric side views of a binary tree Given a binary tree, output two sequences: ( 1) Left-bottom-up view: for each depth, the first node vis...
Coding & Algorithms
2
0
43 people solved
Jul 26, 2025
Medium
Software EngineerCount clusters covered by dashers
Count clusters covered by dashers You are given two m×n binary matrices of equal size: D for dasher availability and U for user presence. A cell value...
Coding & Algorithms
7
0
72 people solved
Jul 26, 2025
Medium
Software EngineerTransform tree with subtree sum mapping
Transform tree with subtree sum mapping You are given the roots of two complete binary trees T1 and T2 that have identical structure (same shape and n...
Coding & Algorithms
7
0
59 people solved
Jul 26, 2025
Medium
Software EngineerCount IoT devices matching date and threshold
Implement function numDevices(statusQuery, threshold, dateStr) that returns the number of IoT devices from a paginated REST API that were added in the...
Data Manipulation (SQL/Python)
0
0
8 people solved
Jul 26, 2025
Medium
Software EngineerCompute sum of minima with removals
Compute sum of minima with removals You are given an array weights[0..n-1] of positive integers representing product weights in a line. Repeat until n...
Coding & Algorithms
2
0
21 people solved
Jul 26, 2025
Medium
Software EngineerOptimize machines for distributed merging cost
Optimize machines for distributed merging cost Optimize k to Minimize Distributed Runtime Context You are splitting a dataset of size n across k ident...
System Design
2
0
25 people solved
Jul 26, 2025
Medium
Software EngineerSolve median extremes and segment flips
Solve median extremes and segment flips Part A — Sliding-window median extremes: - Input: an integer k (1 ≤ k ≤ n) and an array nums of length n. - Fo...
Coding & Algorithms
2
0
25 people solved
Jul 26, 2025
Medium
Software EngineerExplain hash maps and solve array intersection
1) Explain the internal implementation of a hash map: underlying array/bucket layout, hash function choice, collision resolution strategies (separate ...
Coding & Algorithms
12
0
107 people solved
Jul 26, 2025
Medium
Software EngineerCompute unique visitors by department
You have two tables: products(product_id, department, category, subcategory) where department > category > subcategory form a parent–child hierarchy, ...
Data Manipulation (SQL/Python)
0
0
8 people solved
Jul 26, 2025
Medium
Software EngineerImplement classes in existing abstract hierarchy
You are given an existing Python codebase that defines multiple classes, including abstract base classes using abc.ABC and @abstractmethod decorators....
Coding & Algorithms
7
0
96 people solved
Jul 26, 2025
Medium
Software EngineerCreate SQL report of top extensions by weekday
You are given a PostgreSQL table service_access_log with columns: method TEXT (HTTP verb), path TEXT (URL path that may include a filename and optiona...
Data Manipulation (SQL/Python)
0
0
4 people solved
Jul 26, 2025
Medium
Software EngineerCount the Days Between Two Dates
Count the Days Between Two Dates You are given two calendar dates as strings in YYYY-MM-DD format. Return the number of days between them as a non-neg...
Coding & Algorithms
0
0
8 people solved
Jul 23, 2025
Hard
Software EngineerCompute maximum currency exchange rate
Compute maximum currency exchange rate You are given a set of currencies and the direct exchange rates between some pairs of them. Each direct exchang...
Coding & Algorithms
17
0
147 people solved
Jul 20, 2025
Medium
Machine Learning EngineerImplement placeholder-based pattern matcher
Implement placeholder-based pattern matcher You are given: 1. A string s that may contain placeholders delimited by the % character. 2. A dictionary d...
Coding & Algorithms
1
0
32 people solved
Jul 18, 2025
Medium
Machine Learning EngineerFind max min-plus-max over all subarrays
Find max min-plus-max over all subarrays You are given an array arr of n integers. A subarray is a contiguous non-empty segment of the array. For any ...
Coding & Algorithms
5
0
37 people solved
Jul 18, 2025
Medium
Machine Learning EngineerInternValidate normalized palindromes with variants
Implement a function isNormalizedPalindrome(s) that returns true if s reads the same forward and backward after removing non‑alphanumeric characters a...
Coding & Algorithms
15
1
109 people solved
Jul 17, 2025
Medium
Software EngineerImplement a simplified multi-level banking system
Implement a simplified multi-level banking system Implement a simplified banking system with multi-level requirements. All operations accept a stringi...
Coding & Algorithms
9
0
83 people solved
Jul 17, 2025
Medium
Software EngineerSolve three mini-game algorithm tasks
Solve three mini-game algorithm tasks Solve three mini-game algorithm tasks: (a) Move-House Puzzle: Given initial and target arrangements of N labeled...
Coding & Algorithms
12
0
86 people solved
Jul 17, 2025
Medium
Software EngineerCompute nearest dashmart and busiest assignments
Compute nearest dashmart and busiest assignments You are given an m x n grid of characters where 'D' marks a dashmart, 'X' marks an impassable cell, a...
Coding & Algorithms
7
0
75 people solved
Jul 17, 2025
Medium
Software EngineerImplement string sum and weighted city picker
Implement string sum and weighted city picker Part A — Add two numbers represented as strings: Given two non‑negative integers provided as decimal str...
Coding & Algorithms
3
0
36 people solved
Jul 17, 2025