Олег Давыдов (Редактор отдела «Интернет и СМИ»)
The algorithm also visits children in order of distance to the query point. This means it checks the most promising quadrants first, which tends to find a good candidate early and enables aggressive pruning of the remaining quadrants. Without this ordering, the algorithm would still produce the correct result, but it would prune fewer nodes.
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/r/WorldNews Live Thread: Russian Invasion of Ukraine Day 1464, Part 1 (Thread #1611)。关于这个话题，夫子提供了深入分析
* @param arr 待排序数组
usePinned { pinnedBytes -