（三）违反国家规定，对计算机信息系统中存储、处理、传输的数据和应用程序进行删除、修改、增加的；
（二）植入用户无法卸载的非基本功能软件，或者未经用户同意强行植入软件的；
，更多细节参见谷歌浏览器【最新下载地址】
A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.
Git can't help. You didn't commit.