用快速排序法将数组{2,1,7,9,7,6,4,2,3,5}按升序排列
public class Kuaisu { public static void main(String[] args) { int[] arr = {2,1,7,9,7,6,4,2,3,5}; quickSort(arr, 0, arr.length - 1); printArr(arr); } private ...