Microsoft interview questions
Online test → Technical → Technical
DSA
Showing 39 of 1,522 reported in this area
Connect nodes at the same level in a binary tree
Reverse a linked list in groups of size k.
Find the longest palindromic substring in a given string
Find the maximum subarray sum using Kadane’s Algorithm.
Print a given matrix in spiral order.
Find the maximum product subarray in a given array.
Find the majority element in an array
Detect and remove a loop in a linked list.
Find the Lowest Common Ancestor (LCA) in a Binary Tree
Find the Longest Increasing Subsequence (LIS) in an array.
Check whether a given binary tree is a Binary Search Tree (BST).
Find the Lowest Common Ancestor (LCA) of two nodes in a Binary Tree
Find the length of the longest substring without repeating characters.
Find the minimum number of adjacent swaps required to make a given string a palindrome.
Clone a linked list with next and random pointer
Add 1 to a number represented as a linked list
Perform level order traversal of a binary tree
Perform inorder traversal of a binary tree without using recursion.
Reverse every k nodes in a linked list.
Longest Palindromic Subsequence in a string
Reverse a linked list in groups of given size
Find the median in a running stream of numbers
Search an element in a sorted and rotated array
Find the longest increasing subsequence in an array
Group all anagrams together from a list of strings.
Connect all nodes at the same level in a binary tree
Convert an infix expression to a postfix expression.
Find the kth largest element in a Binary Search Tree.
Swap two nodes in a doubly linked list using a hashmap.
Design and implement an LRU (Least Recently Used) Cache.
Find the number of islands in a binary matrix using DFS.
Construct a Binary Search Tree from its preorder traversal.
Design and implement an LRU Cache with optimal time complexity.
Given an array, find the maximum j - i such that arr[j] > arr[i]
Rotate a square matrix (image) by 90 degrees clockwise in-place.
Find the least common ancestor (LCA) of two nodes in a binary tree
Find all nodes at distance K from a given leaf node in a binary tree
Print the boundary traversal of a binary tree in clockwise direction.
Find the point of intersection of two line segments given their endpoints.
CS fundamentals
Showing 9 of 545 reported in this area
What is the difference between a process and a thread?
Predict the output of C and Java code snippets.
Explain the difference between mutex and semaphore
Why would you choose NoSQL over RDBMS?
Implement a thread-safe Singleton class.
Explain how Garbage Collection works in Java
Explain React virtualization and why it is needed
Explain the concept of Virtual Memory in Operating Systems
How would you implement an LRU (Least Recently Used) cache?
System design
Showing 3 of 238 reported in this area
Design and implement an LRU cache
How would you handle very large data in a single reducer?
Design the newsfeed system of Facebook.
Behavioural
Showing 3 of 56 reported in this area
How do you prioritize tasks and manage your time effectively?
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Tell me about a time when you faced a conflict within a team and how you resolved it.
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Can India go completely cashless?
Puzzles
Showing 3 of 33 reported in this area
Three Ants and Triangle Problem
Prove that the number between twin primes is divisible by 6
Solve the puzzle: ABCD × 4 = DCBA. Find the 4-digit number.
Aptitude
Showing 3 of 23 reported in this area
Given two numbers n and m, find the number closest to n that is divisible by m.
Estimate a real-world metric using assumptions (guesstimate).
Find the maximum number of 2×2 squares that can be fit inside a right isosceles triangle.
Showing 60 of 2,029 questions. Ranked by how often the same question came back across reports.
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What questions does Microsoft ask?
Candidate interview reports most often cover DSA (63%) and CS fundamentals (23%).
How many rounds does Microsoft interview have?
Candidate interview reports show an average of 4.1 rounds per experience, with a typical sequence of Online test → Technical → Technical. Individual interview paths can vary.
Is the Microsoft interview hard?
Among questions with a reported difficulty, the mix is easy 30%, medium 60%, hard 10%.