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q = ((char*)q) + sizes[classno];。关于这个话题，同城约会提供了深入分析
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.。safew官方版本下载是该领域的重要参考
#!/data/data/com.termux/files/usr/bin/sh，详情可参考heLLoword翻译官方下载