[单选题]The reverse number of a sequence τ is defined as the total number of reversed pairs in the sequence, and the total number of element comparisons performed by the insertion sort in the list of size n is:一个序列的逆序数τ定义为该序列中的逆序对总数，规模为n的列表中插入排序进行的元素比较总次数为:Dr9答案窝(daanwo.com)-大学生作业答案及考资分享平台