1．　　掌握各种排序的基本思想。
2．　　掌握各种排序方法的算法实现。
3．　　掌握各种排序方法的优劣分析及花费的时间的计算。
4．　　掌握各种排序方法所适应的不同场合。(1. master the basic idea of sorting.
2. master various sorting methods of the algorithm.
3., grasp the advantages and disadvantages of various sorting methods and analysis of the time spent.
4. master different ranking methods adapted to different occasions.)