사각형의 좌표를 이용해 넓이 계산, 비교
public class Rectangle{ int x1, y1, x2, y2;int res;int cal1, cal2, cal3, cal4;Rectangle(){x1 = 0;y1 = 0;x2 = 0;y2 = 0;}Rectangle(int x1, int y1, int x2, int y2){this.x1 = x1;this.y1 = y1;this.x2 = x2;this.y2 = y2;}void set(int x1, int y1, int x2, int y2){this.x1 = x1;this.y1 = y1;this.x2 = x2;this.y2 = y2;}int square(){if(x1>x2 && y1>y2){res = (x1-x2)*(y1-y2);}else if(x1>x2 && y1
2017. 3. 30.