2. 按步长分组，对每组进行插入排序
Quadtrees aren't limited to point data. They can also partition regions of continuous data, like the pixels of an image.
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As the top boss of their companies, CEOs often rely on layers of management to do their employee bidding—but Match Group leader Spencer Rascoff has broken down the barriers of command. The CEO said the best-kept secret in creating a great company is to encourage transparency, so he asked all his employees to start DMing him.，推荐阅读heLLoword翻译官方下载获取更多信息
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