a_147_Absolute_Difference.java

import java.util.Arrays;

public class a_147_Absolute_Difference {
    public static void main(String[] args) {
        int A[] = {4, 1, 8, 7 } ;
        int B[] = {2, 3 , 6, 5 } ;

        Arrays.sort(A);
        Arrays.sort(B);

        int minDiff = 0 ;

        for(int i=0; i<A.length ; i++){
            minDiff += Math.abs( A[i] - B[i] ) ;
        }

        System.out.println("Minimum Absolute Difference of pair = " + minDiff);

    }
}