Software Engineer Coding & Algorithms Interview Questions
Practice 2,712 real Coding & Algorithms interview questions for Software Engineer roles. From companies including Meta, Amazon, Google, Uber, Microsoft.
"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"
"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"
"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."
"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."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"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."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"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."
"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."
"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."
"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."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"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."
Filter Repeated Robot Status Messages
Filter Repeated Robot Status Messages Implement filter_messages(events) for a robot status stream. Each event is a pair [timestamp, message]. Return, ...
Solve Parser, Trading, Tree, And Deck Tasks
You will solve several independent programming tasks. For each task, implement clean, tested code and state the time and space complexity. 1. Validate...
Solve two coding assessment tasks
The online assessment contained two coding problems: 1. Maximize store revenue You are given an integer array quantity of length n, where quantity[i...
Implement Python feature and resolver metaprogramming
You are given a skeleton for a small Python "feature" framework. The goal is to use metaprogramming to: 1. Parse type-annotated classes into Feature o...
Solve chat, grid paths, and car rentals
You are given three independent programming tasks. For each, describe and implement an efficient algorithm, and be prepared to analyze its time and sp...
Build a Local URL Shortener
Implement a local URL shortener that runs on a single machine. Design a small library or service with two core operations: - shorten(long_url) -> shor...
Solve four coding problems
The interview included four independent coding problems: 1. Longest all-healthy service streak You are given the daily health-check results for mul...
Moderator System with Ranking, Communities, and Demotion
This question tests practical data structure design and object-oriented system modeling, requiring the implementation of a hierarchical moderator mana...
Restore an Array with One Displaced Element
Restore an Array with One Displaced Element An integer array was originally sorted in nondecreasing order. It was then changed by removing at most one...
Calculate Driver Payments
This question evaluates a candidate's ability to implement interval arithmetic and overlap computation, perform data deduplication and filtering, hand...
Implement a Circular Buffer
This question evaluates understanding of data structures and buffer management, specifically FIFO semantics, fixed-capacity storage, wraparound indexi...
Top-K Largest Elements in Every Sliding Window
This question evaluates the ability to design and maintain an ordered data structure that efficiently tracks the top K largest values within a moving ...
Busiest Rental Car
This question evaluates a candidate's ability to simulate a resource-allocation process using interval scheduling and greedy assignment rules. It test...
Minimal Unique Word Abbreviations
Minimal Unique Word Abbreviations You are given an array words of n distinct strings. Produce a minimal abbreviation for every word according to the r...
Grid Robot Command Simulator
This question tests practical coding ability by requiring implementation of a command-driven state machine on a bounded 2D grid. It evaluates simulati...
Design Spreadsheet Formula Cells
Design an in-memory spreadsheet that supports assigning either literal integer values or formulas to cells. Cells are identified by names such as A1, ...
Assign meetings to rooms with delays
This question evaluates skill in scheduling algorithms, priority queue and heap usage, greedy decision-making, and time-based event simulation for man...
Solve Five OA Coding Tasks
This is an online-assessment screen consisting of five independent coding tasks. Each task is self-contained — there is no shared state between them —...
Verify Ordering Under a Scrambled Alphabet
Verify Ordering Under a Scrambled Alphabet Given a sequence of words and an alphabet string that lists every allowed character from smallest to larges...
Determine Whether Two Strings Are Isomorphic
Determine Whether Two Strings Are Isomorphic Problem Implement areIsomorphic(source, target) -> result. Two strings are isomorphic when every characte...