Rectangle Area

该题比较简单，首先求重叠区域的面积，让后从总面积减去重叠区域的面积。

class Solution {
public:
    int computeArea(int A, int B, int C, int D, int E, int F, int G, int H) {
        int M = A > E ? A : E;
        int N = B > F ? B : F;
        int P = C < G ? C : G;
        int Q = D < H ? D : H;
        int Chongdie = 0;
        if(M < P && N < Q)
            Chongdie = (P - M) * (Q - N);
        return (C - A) * (D - B) + (G - E) * (H - F) - Chongdie;
    }
};

Rectangle Area

原文：http://blog.csdn.net/ny_mg/article/details/46876541