hello . in java challenges i tried to reverse my char array but sololearn says my code is not correct dont know why?

Question

https://code.sololearn.com/cekQLQWS4Y6k/?ref=app

Answer 1

for (int i=arr.length-1;i>=0 ;i-- ){…

Answer 2

In your for loop it must be
int i = arr.length - 1

because the last index of the char array is not the length of the array but 1 less