分治法的应用 将序列A(0：n-1)中元素按照升序排序方法:归并排序和快速排序((1)对于快速排序,主元采用三者A(low),A(high),A((low+high)/2)中其值居中者-Divide and conquer the application of the sequence A (0: n-1) elements in ascending sorted by: Merge sort and quick sort ((a) for Quick Sort, the main elemen