The tree starts as a single region covering the whole space. As points arrive, they get dropped into the region that contains them. When a region exceeds its capacity (the maximum number of points it can hold before splitting), the region divides into four children, and the existing points get redistributed.
02、跨界的野心：为什么各大巨头都“盯”上了毛孩子？如果说养宠人的情绪是点火器，那么让宠物经济加速发展的则是各大巨头的入场。宠物消费具备三大优势：生命周期长、复购极强、情绪粘性高，这三点构成消费行业理想的商业结构。
，这一点在同城约会中也有详细论述
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"One day I just woke up and after a year-and-a-half on the streets I thought, 'I need to do something'," he says, remembering how he approached a local charity for support.