Count the rectangles in an ASCII diagram like the one below.
+--+
++ |
+-++--+
| | |
+--+--+
The above diagram contains 6 rectangles:
+-----+
| |
+-----+
+--+
| |
| |
| |
+--+
+--+
| |
+--+
+--+
| |
+--+
+--+
| |
+--+
++
++
You may assume that the input is always a proper rectangle (i.e. the length of every line equals the length of the first line).
You can run all the tests for an exercise by entering
$ gradle test
in your terminal.
It's possible to submit an incomplete solution so you can see how others have completed the exercise.