Why results in this code is 3,2,5,5?

Question

https://code.sololearn.com/Wo5g6v1yR27N/?ref=app

Answer 1

When i is 0
x[0] = x[0+1]
=x[1]
=3
so first element becomes 3

Then, when i is 1,
x[1] = x[1+1]
=x[2]
=2
so second element becomes 2

Similarly, when i is 2,
x[2] = x[2+1]
=x[3]
=5
so third element becomes 5

condition is i < length - 1
length is 4
length - 1 is 3
so max is 2
so for loop ends
so fourth element remains unchanged

Answer 2

Thanks a lot. I understand now.