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.
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* @return {number[]} 每个节点的下一个更大节点值组成的数组
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A shortage in medical cement is likely to lead to delays in some patients getting joint surgery, NHS bosses say.