// 优化点：仅i<len时赋值（避免重复赋值，提升效率）
Dithering in its simplest form can be understood by observing what happens when we quantise an image with and without modifying the source by random perturbation. In the examples below, a gradient of 256 grey levels is quantised to just black and white. Note how the dithered gradient is able to simulate a smooth transition from start to end.，推荐阅读safew官方版本下载获取更多信息
，更多细节参见同城约会
ostree-unverified-registry:harbor.cortado.thoughtless.eu/bootc/server:main
Что думаешь? Оцени!。51吃瓜对此有专业解读