Instructions

Count the rectangles in an ASCII diagram like the one below.

   +--+
  ++  |
+-++--+
|  |  |
+--+--+

The above diagram contains these 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).

Sign up to Exercism to learn and master JavaScript with 33 concepts, 149 exercises, and real human mentoring, all for free.