The interview process started with an HR person reaching out and conducting a phone screening. They asked mostly personality questions but ended the interview with a puzzle.

The onsite interview lasted from 9 am to 4 pm on the Redmond campus. During that time, I had meetings with 5 different people and was asked 7 different whiteboarding questions.

My advice to anyone preparing for the interview would be to buy a coding interview prep book, for example 'Cracking the Coding Interview,' and memorize all the answers.

If you have a 2D array representing islands (with 1's) and ocean (with 0's), how do you count the number of islands? Note: two adjacent 1's make a single island.

Implement find and replace.

Print out a 2D matrix in a spiral. This is similar to a more common problem: rotate a matrix 90 degrees.

Find the median of an unsorted list of integers in O(n) time.