从后向前扫描已排序部分，找到插入位置，元素后移腾出空间
DECLRMM might work for us - it is approximately what we’re doing by deleting a character on each line when moving horizontally - but it has extremely poor terminal support so I didn’t want to rely on it.
。下载安装 谷歌浏览器 开启极速安全的 上网之旅。对此有专业解读
Active and passive voice changer
flush privileges;