Microsoft Coding & Algorithms Interview Questions
Microsoft Coding & Algorithms interview questions are centered on algorithmic problem solving, clear coding, and the ability to reason about complexity under time pressure. At Microsoft you’ll typically be evaluated on problem decomposition, correctness, time/space complexity, edge-case handling, and communication: interviewers want to see that you can produce a correct solution, explain your approach, and iterate when given feedback. Expect online assessments and phone screens that use collaborative coding editors, followed by a loop of focused technical interviews that mix coding problems with occasional system or design-style questions depending on level. For effective interview preparation, prioritize pattern recognition and timed practice: master arrays and strings, trees and graphs, hashing, dynamic programming, and complexity analysis, and practice explaining tradeoffs aloud. Simulate the coding environment you’ll face, write and test complete solutions, and rehearse concise, structured explanations of your thought process. Balance breadth with depth so you can move quickly between easy and medium problems while still handling harder algorithmic puzzles when required.

"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."
Implement Memory Allocation and In-Memory Records
This question evaluates implementation skills in memory management and in-memory data modeling, covering first-fit allocation semantics, free/merge be...
Sort Three Categories In Place
You are given an array items containing only the values 0, 1, and 2, where each value represents a category. Rearrange the array in-place so that all ...
Implement K-Means and Detect Divisible Subarrays
Solve both coding tasks. Part A: Implement K-Means Clustering Implement K-means clustering for a set of points. Given: - points: a list of n points, w...
Retain Top K Elements
Given a list of integers nums and an integer k, return a new list formed from the original list after removing every element except the k largest elem...
Implement SQL Table and DNA Ordering
Two independent coding exercises were asked. Solve both. Problem A: CSV-backed in-memory table Build a tiny in-memory relational table initialized fro...
Solve power jumps and graph tour
This pair of problems evaluates algorithmic problem-solving in number representation and combinatorial graph optimization, focusing on competencies in...
Find Top K Largest Numbers
This question evaluates proficiency with heap/priority-queue data structures, selection algorithms, and the ability to analyze time and space complexi...
Write an average-income function
This question evaluates proficiency in data manipulation and basic statistical aggregation, particularly handling missing values and computing average...
Compute discounted prices and full-price indices
You are given an array prices of length \(n\). Items are sold from left to right, and each item’s final selling price is computed as follows: For item...
Reconstruct DNA from tagged fragments
This question evaluates understanding of sequence reconstruction, graph modeling, and traversal/orientation constraints, focusing on ordering labeled ...
Traverse an Org Chart by Level
You are given an organization's reporting structure as a flat list of employee-manager relationships. Exactly one employee is the root (the CEO) and h...
Implement cache and merge intervals
This question evaluates proficiency in designing and implementing efficient data structures (a fixed-capacity LRU key-value cache) and interval-proces...
Implement Matrix Move and Logger
This question evaluates array manipulation and in-place algorithm design for handling overlapping submatrix moves, along with data-structure and time-...
Implement Calendar, Tokenizer, and Meeting Optimizer
This question evaluates competencies in interval scheduling and overlap detection, custom string tokenization and parsing rules, and combinatorial opt...
Remove duplicates in-place from unsorted array
This question evaluates understanding of in-place array manipulation, duplicate removal, and algorithmic analysis under strict extra-space constraints...
Compute product of array except self
This question evaluates understanding of array manipulation, modular arithmetic, and algorithmic optimization by requiring computation of per-element ...
Implement idempotent request handling with idempotency keys
This question evaluates understanding of idempotency semantics, idempotency-key handling, concurrency control, synchronization, and in-memory TTL-base...
Implement a resumable data loader
This question evaluates a candidate's ability to design stateful, resumable data iteration with deterministic shuffling and compact serializable check...
Traverse org chart level by level
This question evaluates understanding of hierarchical data modeling and tree traversal, specifically breadth-first (level-order) traversal and reconst...
Fill rooms with nearest-gate distance
You are given an m×n grid representing a building floor plan: - -1 = wall/blocked cell - 0 = gate - A large positive number (e.g., INF = 2^31-1) = emp...