PGS_12941.java

package programmers;

import java.util.Arrays;

public class PGS_12941 {
    public static void main(String[] args) {
        System.out.println(solution(new int[]{1, 4, 2}, new int[] {5, 4, 4}));
        System.out.println(solution(new int[]{1, 2}, new int[] {3, 4}));
    }

    public static int solution(int []A, int []B)
    {
        int answer = 0;

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

        for (int i =0; i < A.length; i++) {
            answer += A[i] * B[A.length - 1 - i];
        }
        return answer;
    }
}