精心编写的带有4个基本算法的程序，能加深大家对希尔排序、冒泡排序、快速排序、选择排序的理解，并清楚其中的区别，以及算法优劣性-Carefully prepared with a basic algorithm for four procedures, to strengthen the U.S. on the Hill sort, bubble sort, quick sort, selection sort of understanding, and clearly one of the di