for (let i = n - 1; i = 0; i--) {
Paul Glynn and Helen BushbyCulture reporters
。夫子对此有专业解读
Трамп высказался о непростом решении по Ирану09:14
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.