[프로그래머스]직사각형 넓이 구하기

class Solution {
    public int solution(int[][] dots) {
        int minX = dots[0][0];
        int maxX = dots[0][0];
        int minY = dots[0][1];
        int maxY = dots[0][1];

        for (int i = 1; i < dots.length; i++) {
            minX = Math.min(minX, dots[i][0]);
            maxX = Math.max(maxX, dots[i][0]);
            minY = Math.min(minY, dots[i][1]);
            maxY = Math.max(maxY, dots[i][1]);
        }

        return (maxX - minX)*(maxY - minY);
    }
}