public class QuickSort {
/**主方法*/
public static void main(String[] args) {
//声明数组
int[] nums = {27, 8, 57, 9, 23, 41, 65, 19, 0, 1, 2, 4, 5};
//应用快速排序方法
quickSort(nums, 0, nums.length-1);
//显示排序后的数组
for(int i = 0; i < nums.length; ++i) {
System.out.print(nums[i] + ",");
}
System.out.println("");
}
/**快速排序方法*/
public static void quickSort(int[] a, int lo0, int hi0) {
int lo = lo0;
int hi = hi0;
if (lo >= hi)
return;
//确定指针方向的逻辑变量
boolean transfer=true;
while (lo != hi) {
if (a[lo] > a[hi]) {
//交换数字
int temp = a[lo];
a[lo] = a[hi];
a[hi] = temp;
//决定下标移动,还是上标移动
transfer = (transfer == true) ? false : true;
}
//将指针向前或者向后移动
if(transfer)
hi--;
else
lo++;
//显示每一次指针移动的数组数字的变化
/*for(int i = 0; i < a.length; ++i) {
System.out.print(a[i] + ",");
}
System.out.print(" (lo,hi) = " + "(" + lo + "," + hi + ")");
System.out.println("");*/
}
//将数组分开两半,确定每个数字的正确位置
lo--;
hi++;
quickSort(a, lo0, lo);
quickSort(a, hi, hi0);
}
}