Two screening interviews:

• Software - on-site
• Linux - remote

Interview day with five interviews.

All interviewers were very pleasant and tried to help with questions that were difficult for me.

Given an m x n matrix board where each cell is a battleship 'X' or empty '.', return the number of battleships on the board.

Battleships can only be placed horizontally or vertically on the board. In other words, they can only be made of the shape 1 x k (1 row, k columns) or k x 1 (k rows, 1 column), where k can be of any size. At least one horizontal or vertical cell separates two battleships (i.e., there are no adjacent battleships).