swap(&arr[low], &arr[randomIdx]); // 基准换到开头
use a PAGESZ that is the LCM of the operating system page size and
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Container Lifecycle
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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.