4 A good discussion on luminance and how to calculate it can be found on this stack exchange question. ↑
圖像來源，Enid Din/@enid.din
。im钱包官方下载对此有专业解读
// console.log(canSeePersonsCount([1,2,3,4,5])); // 输出 [1,1,1,1,0]（正确）
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