For well-distributed points, nearest neighbor search is often near O(logn)O(\log n)O(logn) in practice. In the worst case (all points clustered tightly or along a line), it can degrade to O(n)O(n)O(n), but this is uncommon with typical spatial data.
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The earbuds have a "more refined, computationally designed fit" too, according to Samsung. The company claims the latest earbuds have smaller earbud heads that allow for a better, more secure fit and a more "comfortable experience during all-day wear." The Galaxy Buds 4 remain in an open-fit format while the Buds Pro 4 have a canal-fit design.
家庭和社會的作用同樣不可替代。江蘇省老年大學協會秘書長徐建設表示，一方面要加快實施「數字掃盲」，幫助老人提升數字素養；另一方面，要「為習慣智能技術的老人營造清朗網絡空間，開展老人防沉迷、防詐騙等方面教育引導」。