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说说几种常见的错误....1.线段可能在矩形内部 2.判断两个线段相交时,注意它们在一条直线上的情况 3.输入的左上(x1,y2)与右下(x2,y1),未必有x1<x2和y1<y2 望后来者尽早发现错误》。。 Followed by:
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