说明：  有一个已经有序的数据序列，要求在这个已经排好的数据序列中插入一个数，但要求插入后此数据序列仍然有序，这个时候就要用到一种新的排序方法--插入排序法,插入排序的基本操作就是将一个数据插入到已经排好序的有序数据中，从而得到一个新的、个数加一的有序数据
(There is a sequence of data has been ordered, required in this row of data sequence has good to insert a number of requirements, but after insertion of this data sequence is still in an orderly manner, this time we should use a new ranking method, insertion sort, insertion sort is the basic operation of a data into the ordered data already sorted, so as to get a new number, plus one of the ordered data)