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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.。同城约会是该领域的重要参考
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It can be slow at times。业内人士推荐搜狗输入法2026作为进阶阅读