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.

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Implement a resumable data loader
Problem: Resumable DataLoader You are implementing a mini data-loading component for model training. Design a ResumableDataLoader that iterates over a...
Implement concurrent structures and debug queue code
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Solve binary-search knapsack & graph shortest path
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Solve Three Coding Interview Problems
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Count k for consecutive-sum generator
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Merge multiple sorted arrays using min-heap
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Implement a type-based mutex for tasks
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Identify the Extra Directed Edge
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Check palindrome and find next larger palindrome
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Solve load balancing and perfect pairs
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Reverse a list in-place
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Implement Matrix Move and Logger
Implement the following two coding tasks. 1. Move a submatrix in place. You are given an m x n matrix, a source rectangle defined by its top-left corn...
Solve three scheduling and array problems
In this round you are given three separate coding problems to solve. --- Problem 1: Schedule tasks with cooldown You are given: - A list of tasks, whe...
Find lowest common ancestor in tree
You are given the root of a binary search tree (BST) and two distinct nodes p and q that are guaranteed to exist in the tree. Task (BST case): - Find ...
Find max consecutive elements with sum below target
You are given: - An integer array nums of length n, sorted in non-decreasing order. - An integer index such that 0 ≤ index < n. - An integer target. S...
Find maximum collinear points
Given a list of 2D points with integer coordinates, return the maximum number of points that lie on the same straight line. Input - points: a list of ...
Stream output until stop token appears
You are implementing a simplified streaming conversational AI output filter. Text arrives in chunks (strings) in order. There is a special stop token ...
Detect stop tokens during streaming inference
Problem: Stop-token / stop-sequence detection in streaming generation During LLM inference you receive tokens incrementally (streaming). Implement log...
Implement a sliding-window rate limiter allow()
Problem Implement a sliding-window log rate limiter. Design a class RateLimiter initialized with: - maxRequests (e.g., 100) - windowMillis (e.g., 60_0...
Traverse org chart level by level
Problem You are given an organization chart as manager relationships. Each employee is represented by: - employee_id (string/int) - manager_id (string...