swap(&arr[low], &arr[randomIdx]); // 基准换到开头
受此影响，OPPO、一加、vivo、小米、iQOO、荣耀等主流品牌已拟定于 3 月初启动新一轮价格调整，这将成为近五年来规模最大、涨幅最显著的一轮集体调价。甚至有分析之处，千元机市场或将迎来「发布即亏，卖出即赔」的窘境。。safew官方下载对此有专业解读
You look at a region of the image. If all the pixels are roughly the same color (below some threshold), you store the average color for the whole region as a single value. If the pixels vary too much, you split the region into four quadrants and try again.，推荐阅读WPS官方版本下载获取更多信息
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