题目
求三个矩形的相交面积
输入:
1 6 4 4
2 5 3 3
0 3 5 5
解释:
三行为三个矩形,第一二列为左上角 横纵坐标,第三四列分别为矩形长宽
输出:
3
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int a1 = input.nextInt();
int a2 = input.nextInt();
int a3 = input.nextInt();
int a4 = input.nextInt();
int b1 = input.nextInt();
int b2 = input.nextInt();
int b3 = input.nextInt();
int b4 = input.nextInt();
int c1 = input.nextInt();
int c2 = input.nextInt();
int c3 = input.nextInt();
int c4 = input.nextInt();
int[] a = {a1, a2, a3, a4};
int[] b = {b1, b2, b3, b4};
int[] c = {c1, c2, c3, c4};
int[] m = commonSpace(a, b);
int[] commonSpace = commonSpace(m, c);
System.out.println(commonSpace[2] * commonSpace[3]);
}
public static int[] commonSpace(int[] a, int[] b){
int x11 = a[0];
int y11 = a[1];
int x12 = a[0]+a[2];
int y12 = a[1]-a[3];
int x21 = b[0];
int y21 = b[1];
int x22 = b[0]+b[2];
int y22 = b[1]-b[3];
int xx = Math.max(x11,x21);
int yy = Math.min(y11,y21);
int x = Math.min(x12,x22);
int y = Math.max(y12,y22);
return new int[]{xx,yy,Math.abs(xx-x),Math.abs(yy-y)};
}