Microsoft Coding Interview Questions

Review this list of 41 Microsoft Coding interview questions and answers verified by hiring managers and candidates.

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Build a TTL cache.
a month ago1 answer
Delete Node in a Binary Search Tree (BST).
a year ago4 answers
Given an integer, reverse it. Integers are within range [-2^15, 2^15 - 1].
a year ago1 answer
Construct a binary tree given its preorder and inorder traversals.
+2a month ago12 answers
Burst Balloons
2 years ago
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Find the number of rotations in a circularly sorted array. Has video answer
+17 months ago16 answers
Given an array of integers and an integer k, find the kth largest element in the array.
8 months ago4 answers
Accounts Merge
9 months ago
Given a list of sentences, find the top n most frequent words.
2 years ago1 answer
Implement @ tagging like Teams/Slack.
7 months ago
Given a binary tree, find the shortest path from the root to a leaf.
6 months ago
Implement a function to justify a list of words within a given width.
2 years ago1 answer
Given a list of numbers, find the median without sorting the entire list. Hint: Use quick sort algorithm.
2 years ago
Implement a method to convert an integer to a string of bytes without using built-in helper functions.
6 months ago
Determine if an array of integers from 1 to n contains a duplicate in constant time and space.
2 years ago2 answers
Given two empty jugs with capacities a and b liters and an infinite water supply, determine a way to end up with exactly X liters of water.
2 years ago1 answer
Print all words from a dictionary that can be found on a given Boggle board. Has video answer
4 years ago1 answer
Top k frequent elements
+13 months ago1 answer
Given a list of transactions between friends, return the minimum number of transactions required to settle the debts. For e.g. Alice gave $5 to Bob and Bob gave $5 to Bill. Answer will be 1.
2 years ago
Write a PowerShell script to detect C2 beaconing.
10 months ago

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Microsoft Coding Interview Questions

Build a TTL cache.

Delete Node in a Binary Search Tree (BST).

Given an integer, reverse it. Integers are within range [-2^15, 2^15 - 1].

Construct a binary tree given its preorder and inorder traversals.

Burst Balloons

Find the number of rotations in a circularly sorted array. Has video answer

Given an array of integers and an integer k, find the kth largest element in the array.

Accounts Merge

Given a list of sentences, find the top n most frequent words.

Implement @ tagging like Teams/Slack.

Given a binary tree, find the shortest path from the root to a leaf.

Implement a function to justify a list of words within a given width.

Given a list of numbers, find the median without sorting the entire list. Hint: Use quick sort algorithm.

Implement a method to convert an integer to a string of bytes without using built-in helper functions.

Determine if an array of integers from 1 to n contains a duplicate in constant time and space.

Given two empty jugs with capacities a and b liters and an infinite water supply, determine a way to end up with exactly X liters of water.

Print all words from a dictionary that can be found on a given Boggle board. Has video answer

Top k frequent elements

Given a list of transactions between friends, return the minimum number of transactions required to settle the debts. For e.g. Alice gave $5 to Bob and Bob gave $5 to Bill. Answer will be 1.

Write a PowerShell script to detect C2 beaconing.

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