8种排序算法比较

**              1 --- 冒泡排序                    **
**              2 --- 选择排序                    **
**              3 --- 直接插入排序                **
**              4 --- 希尔排序                    **
**              5 --- 快速排序                    **
**              6 --- 堆排序                      **
**              7 --- 归并排序                    **
**              8 --- 基数排序

https://github.com/c6357/YUSortingAlgorithm