What is the .size() for used over here ( taken from editorial solution)

```
ret.push_back(A[(i + B)%A.size()]);
```

What is the .size() for used over here ( taken from editorial solution)

```
ret.push_back(A[(i + B)%A.size()]);
```

size() is to calculate length of List here ArrayList since, we can’t use length() for List type.

Lets also declare new array “ret” to copy the result.

first iteration-

i=0 so A[(0+2)%5]=A[2]=3

push_back(3) to ret

ret contains 3

second iteration-

i=1 so A[(1+2)%5]=A[3]=4

push_back(4) to ret

ret contains 3 4

third iteration-

i=2 so A[(2+2)%5]=A[4]=5

push_back(5) to ret

ret contains 3 4 5

fourth iteration-

i=3 so A[(3+2)%5]=A[0]=1

push_back(1) to ret

ret contains 3 4 5 1

fifth iteration-

i=4 so A[(4+2)%5]=A[1]=2

push_back(2) to ret

ret contains 3 4 5 1 2

if i = 5 loop breaks and returns ret