直接插入排序（Straight Insertion Sorting）的基本思想是：把n个待排序的元素看成为一个有序表和一个无序表，开始时有序表中只包含一个元素，无序表中包含有n-1个元素，排序过程中每次从无序表中取出第一个元素，将它插入到有序表中的适当位置，使之成为新的有序表，重复n-1次可完成排序过程。

-The basic idea is to direct insertion sort (Straight Insertion Sorting): n be sorted elements seen as an ordered table and an unordered list, beginning orderly table contains only one element, unordered list containing n-1 elements, the sorting process every time removed from the unordered list, the first element, and insert it into the appropriate location in the ordered table, into a new order table, repeat n-1 to be completed by the sort process.