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.
// console.log(dailyTemperatures([73,74,75,71,69,72,76,73])); // [1,1,4,2,1,1,0,0]
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