Driver code
public static void main ( String [ ] args ) { int n = 5 ; Vector < Integer > A = new Vector < Integer > ( ) ; Vector < Integer > B = new Vector < Integer > ( ) ; A . add ( 4 ) ; A . add ( 8 ) ; A . add ( 2 ) ; A . add ( 6 ) ; A . add ( 2 ) ; B . add ( 4 ) ; B . add ( 5 ) ; B . add ( 4 ) ; B . add ( 1 ) ; B . add ( 3 ) ; System . out . print ( getPairs ( A , B , n ) ) ; } }