1 class Solution 2 { 3     public: 4         bool isBoomerang(vector
     
      
       >& points) 5         { 6             if(points[0][0] == points[1][0] && points[0][1] == points[1][1] 7               || points[1][0] == points[2][0] && points[1][1] == points[2][1] 8               ||points[0][0] == points[2][0] && points[0][1] == points[2][1] 9               || points[0][0] == points[1][0] && points[1][0] == points[2][0]10               || points[0][1] == points[1][1] && points[1][1] == points[2][1])11             return false;12             double a = (double)(points[0][0] - points[1][0]) / (points[0][1] - points[1][1]);13             double b = (double)(points[1][0] - points[2][0]) / (points[1][1] - points[2][1]);14             double c = (double)(points[0][0] - points[2][0]) / (points[0][1] - points[2][1]);15 16             if(abs(a-b)<1e-3 && abs(a-c)<1e-3)17                 return false;18             return true;19         }20 };
      
     

也不知道在写什么，加特判加一堆，还好过了