She gave me one programming problem.

We communicated on the phone, and I had to type my code in a Google Doc.

I applied online and had to pass an online assignment before getting the interview.

The problem was to write a function that takes in a 3x3 array portraying a grid of 1s and 0s. The function needed to figure out if swapping any two grid positions would form a row or column of 1s in the grid. The function should simply return a boolean to indicate the result.