Codility每週一課：P99.5 PolygonConcavityIndex

P99.5 PolygonConcavityIndex Check whether a given polygon in a 2D plane is convex; if not, return the index of a vertex that doesn’t belong to the convex hull. P99.5 凸包內點 判斷一個多邊形是否是凸多邊形，不是的話，返回在凸包內部的點

>>阅读原文<<