Фото: Evelyn Hockstein / Reuters
在过去的很长一段时间里，麦当劳与肯德基几乎成为了商场的“基础设施”，这种渠道策略锁定了消费层次丰富且人流量较大的中腰部商业体。
。搜狗输入法下载是该领域的重要参考
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The pruned nodes (in red) represent entire regions of space that the algorithm never examines. The points inside those regions are never checked. Compare the "Nodes Visited" count to the total number of points. The quadtree is doing far less work than a brute-force scan.