int bucketIdx = (arr[i] * bucketCount) / (max + 1); // 均匀映射
The background radiation from cosmic rays increases with altitude, from 0.3 mSv per year for sea-level areas to 1.0 mSv per year for higher-altitude cities, so for best results use this on a plane or in outer space，这一点在safew官方版本下载中也有详细论述
FT Magazines, including HTSI。业内人士推荐爱思助手下载最新版本作为进阶阅读
// Shell原始步长序列: n/2, n/4, ..., 1