How is it possible? While first element is smaller than the other.

Question

https://code.sololearn.com/cBjG8oWpgcRb/?ref=app

Answer 1

Just an idea.
Try to read the string backwards.
If next char value was less than current char value, subtract
If next char value was greater than current char value, add

Answer 2

Ok now it works fine
Good job! 👍

Answer 3

I go backwad and it is supposed true. You should go backward because the second element is bigger than first.