* @param arr 待排序数组
В России создали жевательную резинку для защиты от кариесаРоссийские ученые создали умную жевательную резинку для защиты от кариеса
1. 选择步长序列（如: n/2, n/4, ..., 1），详情可参考旺商聊官方下载
A few months later, the Korean War broke out and his former fellow apprentice pilots were sent to South East Asia. Many never got to finish their education.
。WPS官方版本下载是该领域的重要参考
人民警察在公安机关以外询问被侵害人或者其他证人，应当出示人民警察证。，详情可参考搜狗输入法2026
Thought to be made from a cattle femur, this decorated Anglo-Saxon spindle whorl, used to provide weight while spinning yarn, was unearthed from farmland near Bishopstone, Buckinghamshire.