2d map code coach case4 test faild

Question

I need help please
I made the code as you see to found the first "P",the x represent to the row and the y represent to the column
could any body tell me why case 4 always faild
https://sololearn.com/compiler-playground/cvUpQaUkgF5S/?ref=app

Answer 1

ELBARAA Gamal Galal ,

the code is nearly perfect, except the line:
...
Console.Write((yb-ya)+(xb-xa));
...

in some cases during the calculation of this line (depending on the test cases used), results can get *negative values* which causes incorrect results.
we can avoid this by using Math.Abs(...) around of each of both expressions.

Answer 2

ELBARAA Gamal Galal

Lothar is right, use Math.Abs()
Console.Write(Math.Abs(yb-ya)+Math.Abs(xb-xa));

also, maybe this is a shorter way to do it:

https://sololearn.com/compiler-playground/cZg7FxaHsZYX/?ref=app