/*diff21

* Given an int n, return the absolute difference between n and 21, except return double the absolute difference if n is over 21.

* diff21(19) → 2

* diff21(10) → 11

* diff21(21) → 0

*/

public class diff21 {

//Class for testing and setting dummy values

public static void main( String [] args ) {

int n = 23;

//Output tests

System.out.println( diff21( n ) );

}

public static int diff21( int n ) {

return ( 21 - n < 0 ) ? ( 2 * Math.abs( 21 - n ) ) : Math.abs( 21 - n );

}

}