Count the Towers

Create a function that counts the number of towers.

Examples

count_towers([
  ["     ##         "],
  ["##   ##        ##"],
  ["##   ##   ##   ##"],
  ["##   ##   ##   ##"]
]) ➞ 4

count_towers([
  ["                         ##"],
  ["##             ##   ##   ##"],
  ["##        ##   ##   ##   ##"],
  ["##   ##   ##   ##   ##   ##"]
]) ➞ 6

count_towers([
  ["##"],
  ["##"]
]) ➞ 1

Notes

• You are given a 2D matrix.
• Towers are two characters in length.
• Towers are made only of the character #.
• Some tests have no towers, return 0.