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 EngineerSearch target in unknown-length sorted array
You have read-only access to a sorted, increasing array-like interface of unknown length that supports get(i), which returns a valid integer for in-bo...
Coding & Algorithms
4
0
51 people solved
Sep 6, 2025
Medium
Data EngineerImplement classes within an abstract Python framework
You are given an existing Python codebase (~200 lines shown) that defines an abstract base class DataProcessor with abstract methods load(self), trans...
Coding & Algorithms
6
0
65 people solved
Sep 6, 2025
Medium
Data EngineerWrite Postgres string parsing and aggregation query
You are given a PostgreSQL table events(user_id TEXT, raw TEXT) where raw stores pipe-delimited key=value pairs, for example 'user=U1|country=US|ts=20...
Data Manipulation (SQL/Python)
0
0
2 people solved
Sep 6, 2025
Medium
Software EngineerFind all pairs summing to target in sorted array
Given a non-decreasing array of integers nums and an integer target, return all unique pairs of indices (i, j) with i < j such that nums[i] + nums[j] ...
Coding & Algorithms
6
0
45 people solved
Sep 6, 2025
Medium
Software EngineerSegment a message with width-constrained suffixes
Given a message string s and an integer width W, split s into consecutive segments and append a suffix "i/n" to each segment indicating its 1-indexed ...
Coding & Algorithms
5
0
42 people solved
Sep 6, 2025
Medium
Software EngineerDesign LCA and find K closest points
Part A — LCA with parent pointers: You are given two nodes a and b in a rooted tree where each node has a parent pointer (you may or may not have dire...
Coding & Algorithms
2
0
24 people solved
Sep 6, 2025
Medium
Software EngineerImplement scalable word count locally
Write a function that reads a very large text file and outputs the frequency of each word. Define your tokenization and normalization rules (case fold...
Data Manipulation (SQL/Python)
0
0
19 people solved
Sep 6, 2025
Medium
Software EngineerCompute delivery times on a grid
You are given a 2D grid with cells marked as 'M' (warehouses), 'C' (customers), 'X' (obstacles), and '.' (roads). You can move up, down, left, or righ...
Coding & Algorithms
12
0
84 people solved
Sep 6, 2025
Medium
Software EngineerDemonstrate ownership and resilience
Behavioral & Leadership Prompts (Software Engineer Onsite) Context: You are interviewing onsite for a Software Engineer role. Answer the following pro...
Behavioral & Leadership
5
0
60 people solved
Sep 6, 2025
Medium
Software EngineerPivot transactions by date without date libs
Given a stream of transaction rows (shopper_id, date_str, amount) where date_str is ISO format 'YYYY-MM-DD', produce a pivoted report for a specified ...
Data Manipulation (SQL/Python)
0
0
8 people solved
Sep 6, 2025
Medium
Software EngineerCompute delivery wait times
You're building a last‑mile delivery simulator. Given n orders, each with arrival_time (non-decreasing integers) and service_time (positive integers),...
Coding & Algorithms
5
0
87 people solved
Sep 6, 2025
Medium
Software EngineerMinimize steps to reduce integer
Given a positive integer n (1 <= n <= 2^61 - 1), in one step you may replace n with n/2 if n is even, or with n+1 or n-1 if n is odd. Return the minim...
Coding & Algorithms
10
0
69 people solved
Sep 6, 2025
Medium
Software EngineerSolve four algorithmic problems
Answer the following independent algorithmic questions: 1) Count extendable prefixes for '10' subsequences: Given a binary string s and an integer k, ...
Coding & Algorithms
21
0
204 people solved
Sep 6, 2025
Medium
Software EngineerImplement Python LRU cache with varargs
Implement an LRU cache in Python as a decorator cache(maxsize) that memoizes a target function's results. Must support positional args, args, and *kwa...
Coding & Algorithms
14
0
122 people solved
Sep 6, 2025
Medium
Software EngineerImplement a same-host web crawler
Implement a web crawler that, given a starting URL and an interface get_links(url) -> Iterable[str], discovers all pages under the same hostname. Requ...
Coding & Algorithms
3
0
59 people solved
Sep 6, 2025
Medium
Software EngineerCompute costs with validation and sorting in Python
Implement a three-part Python task to compute costs for purchase line items. Part 1: Write compute_cost(line_items, price_db) where line_items is a li...
Data Manipulation (SQL/Python)
1
0
9 people solved
Sep 6, 2025
Medium
Software EngineerCompute tree diameter
Given a (potentially large) binary tree, compute its diameter (the number of edges on the longest path between any two nodes). Implement an O(n) solut...
Coding & Algorithms
4
0
41 people solved
Sep 6, 2025
Medium
Software EngineerCount regions with DFS
Given an m x n grid of 0s and 1s, count the number of connected regions consisting of 1s using depth-first search (4-directional adjacency). Return th...
Coding & Algorithms
6
0
44 people solved
Sep 6, 2025
Medium
Software EngineerSerialize and deserialize a dictionary trie
Question Design and implement serialization and deserialization for a trie (prefix tree) that stores a large dictionary of lowercase English words. Th...
Coding & Algorithms
7
0
101 people solved
Sep 6, 2025
Medium
Machine Learning EngineerImplement binary search lower/upper bounds
Question Given a non-decreasing sorted integer array nums of length n and a target value, implement two functions using binary search: 1. lower_bound(...
Coding & Algorithms
5
0
45 people solved
Sep 6, 2025