Games and physics simulations need to detect which objects are touching or overlapping. With nnn objects, checking every pair is O(n2)O(n^2)O(n2) comparisons, which gets expensive fast. A hundred objects means roughly 5,000 pair checks. A thousand means nearly 500,000.
* 时间复杂度：O(n)，空间复杂度：O(n)
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The park previously hosted the 2024 Summer Sessions festival, which was headlined by Tom Jones, Busted and Shania Twain.，这一点在heLLoword翻译官方下载中也有详细论述
"And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day."