标签:comm addclass net length turn rac lap glsl asc
找到在二维平面中两个相交矩形的总面积。
每一个矩形都定义了其左下角和右上角的坐标。
(矩形例如以下图)
如果,总占地面积永远不会超过int的最大值。
这题前天试过,写了一堆推断。终究还是无果……
贴几个别人的解决方式……
int computeArea(int A, int B, int C, int D, int E, int F, int G, int H)
{
int64_t xmin1 = min( A, C );
int64_t xmax1 = max( A, C );
int64_t ymin1 = min( B, D );
int64_t ymax1 = max( B, D );
int64_t xmin2 = min( E, G );
int64_t xmax2 = max( E, G );
int64_t ymin2 = min( F, H );
int64_t ymax2 = max( F, H );
int64_t xa = min( xmax1, xmax2 ) - max( xmin1, xmin2 );
int64_t ya = min( ymax1, ymax2 ) - max( ymin1, ymin2 );
int64_t z = 0, ca = max( xa, z ) * max( ya, z );
int64_t a1 = (xmax1 - xmin1) * (ymax1 - ymin1);
int64_t a2 = (xmax2 - xmin2) * (ymax2 - ymin2);
return a1 + a2 - ca;
}
int computeArea(int A, int B, int C, int D, int E, int F, int G, int H) {
int overlap = (min(C,G)-max(A,E))*(min(D,H)-max(B,F));
if ( min(C,G)<=max(A,E) || min(D,H)<=max(B,F) )
overlap = 0;
return (C-A)*(D-B)+(G-E)*(H-F)-overlap;
}
int computeArea(int A, int B, int C, int D, int E, int F, int G, int H) {
int common = (C <= E || A >= G || B >= H || D <= F) ? 0 : (min(C, G) - max(A, E)) * (min(D, H) - max(B, F));
return (C - A) * (D - B) + (G - E) * (H - F) - common;
}
LeetCode 223 Rectangle Area(矩形面积)
标签:comm addclass net length turn rac lap glsl asc
原文地址:http://www.cnblogs.com/mfmdaoyou/p/7043511.html