프로그래머스-최소직사각형 java

class Solution {
    public int solution(int[][] sizes) {
        int answer = 0;
        int x = 0;
        int y = 0;
        for(int i= 0; i<sizes.length; i++){
            int max = Math.max(sizes[i][0],sizes[i][1]);
            int min = Math.min(sizes[i][0],sizes[i][1]);      
            
            x = Math.max(x, max);
            y = Math.max(y, min);
        }        
        return answer = x*y;
    }
}