Microsoft's most asked interview questions

Like other product based companies, Microsoft also asks data structures and algorithms as part of their technical interview. Below is a of questions prepared from different Microsoft interview experiences.

Most Asked Questions

Check if a Binary Tree is BST or not – Practice here

Remove duplicates from a string, do it in-place – Practice here

Given a rotated array which is sorted search for an element in it – Practice here

Given two linked lists that represent two big numbers (numbers that can not be stored in an int or long long int), write a function that adds the numbers and store the result in a third list.

Variations of above question like subtract two numbers or multiply two numbers represented by linked lists. – Practice here

Print last 10 lines of a big file or big string.

Clone a linked list with next and arbitrary (or random) pointer

Connect nodes at same level. Practice here.

Least common ancestor of a binary tree or a binary search tree

Test case questions like test an ATM.

Run length encoding. – Practice here

Detect cycle in a linked list. Practice here.

Given a sorted array of size n. Each element in array is unique and lies from 1 to n+1. Find the missing element. Write code and test cases for the same. – Practice here

Check if a binary tree is balanced.

Validate a given IP address

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