How to right rotate a linked list in java?

Question

input-1 2 3 4
2
output -3 4 1 2
input-1 2 3 4
3
output-2 3 4 1

Answer 1

1 2 3 4
3
no. of elements of linked list is n=4 & b=3 ,
take out b elements from (n-b)th posn & then take out (n-b) elements from the starting