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arr[j + 1] = arr[j]; // 元素后移
。关于这个话题，下载安装 谷歌浏览器 开启极速安全的 上网之旅。提供了深入分析
"We are quite different people - very much yin and yang - but I think decisions are better made with two brains rather than one as it stops hubris," says Begg, who is London-based.
Что думаешь? Оцени!
优点：计算简单，导数恒为1（正区间），缓解梯度消失