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
Easy
Software EngineerDesign in-memory payment and friendship system
Design and implement an in-memory payment system with simple social features. The system processes a sequence of requests that can: 1. Register a user...
Coding & Algorithms
15
0
190 people solved
Dec 8, 2025
Easy
Software EngineerResolve conflicts during code reviews
In a behavioral interview, you are asked: > How do you resolve conflicts during code reviews? Describe how you would handle disagreements about code c...
Behavioral & Leadership
2
0
42 people solved
Dec 8, 2025
Hard
Software EngineerCompute longest increasing path in matrix
You are given an m x n grid (matrix) of integers grid, where m >= 1 and n >= 1. A path in the matrix is a sequence of cells where: - You may move from...
Coding & Algorithms
5
0
67 people solved
Dec 8, 2025
Hard
Software EngineerCount ways to decode digit string
You are given a string s consisting of digits '0' to '9'. The string encodes a message using the following mapping: - '1' → A, '2' → B, ..., '26' → Z....
Coding & Algorithms
12
0
83 people solved
Dec 8, 2025
Medium
Software EngineerGroup users by same last K watched movies
You are given a list of users' movie-watching histories. Each user’s history is an ordered list of movie IDs in the order they were watched (earliest ...
Coding & Algorithms
10
0
185 people solved
Dec 8, 2025
Medium
Software EngineerDetect cycle in directed dependency graph
You are given a directed dependency graph representing services in a system. - There are n services, labeled from 0 to n - 1. - You are given a list o...
Coding & Algorithms
6
0
90 people solved
Dec 8, 2025
Medium
Software EngineerFind motion intervals above threshold
You are processing data from a single security camera. You are given: - A threshold value T (a real number). - A vector (array) of time-stamped motion...
Coding & Algorithms
8
0
103 people solved
Dec 8, 2025
Medium
Software EngineerCompute median of two sorted arrays
You are given two sorted arrays of integers nums1 and nums2. - nums1 has length m, nums2 has length n. - Both arrays are sorted in non-decreasing orde...
Coding & Algorithms
11
0
213 people solved
Dec 8, 2025
Medium
Machine Learning EngineerImplement integer division without using division
You are given two 32-bit signed integers dividend and divisor. Implement a function that divides dividend by divisor and returns the integer quotient,...
Coding & Algorithms
7
0
53 people solved
Dec 8, 2025
Medium
Software EngineerValidate complete binary tree
You are given the root of a binary tree. A complete binary tree is defined as a binary tree in which: 1. Every level, except possibly the last, is com...
Coding & Algorithms
1
0
23 people solved
Dec 8, 2025
Medium
Software EngineerFind first CIDR block covering IP
You are given: - A single IPv4 address as a string, e.g. "192.168.1.5". - A list of CIDR blocks (IPv4), each as a string in the form "a.b.c.d/x", wher...
Coding & Algorithms
11
0
87 people solved
Dec 8, 2025
Medium
Software EngineerImplement basic pagination for a list
You are given: - A zero-indexed array of items items (you can assume it fits in memory). - An integer pageSize > 0. Design and implement a pagination ...
Coding & Algorithms
16
0
191 people solved
Dec 8, 2025
Hard
Machine Learning EngineerDesign data structure similar to LRU cache
You are asked to design and implement a data structure that behaves similarly to an LRU (Least Recently Used) cache, but with a small variation: - The...
Coding & Algorithms
5
1
57 people solved
Dec 8, 2025
Medium
Software EngineerFind kth smallest in sorted 2D matrix
You are given an n x m matrix of integers where each row and each column is sorted in non-decreasing order. You are also given an integer k such that ...
Coding & Algorithms
3
0
52 people solved
Dec 8, 2025
Easy
Software EngineerFind largest digit-sharing subset
You are given an array of N integers. Each integer has exactly two decimal digits (i.e., each element is between 10 and 99 inclusive). You want to cho...
Coding & Algorithms
10
0
112 people solved
Dec 8, 2025
Easy
Data ScientistCompute active ad revenue by creation source
You work on an ads platform and need to report active ad revenue broken down by the ad’s creation source. Tables ads - ad_id BIGINT PK - advertiser_id...
Data Manipulation (SQL/Python)
3
0
27 people solved
Dec 6, 2025
Easy
Software EngineerImplement basic calculator with four operations
Implement a basic arithmetic expression evaluator. Problem You are given a string s representing a mathematical expression containing non-negative int...
Coding & Algorithms
4
0
30 people solved
Dec 6, 2025
Easy
Software EngineerImplement stateful connection router simulator
You are implementing a simplified connection router / load balancer for a Jupyter-like multi-tenant server system. There are N target servers, indexed...
Coding & Algorithms
2
0
30 people solved
Dec 6, 2025
Easy
Software EngineerMaximize coins with tokens moving by +3
You are given a 1D board represented by a string s of length n. Each character is one of: - '.' — an empty cell - 'C' — a cell containing exactly one ...
Coding & Algorithms
21
2
203 people solved
Dec 5, 2025
Medium
Data ScientistDetect earliest collision among moving cars
You are given n vehicles with kinematics parameters. A “collision” means two vehicles occupy the same position at the same time. Assume continuous tim...
Coding & Algorithms
4
0
30 people solved
Dec 4, 2025