java排序之壹------快速排序代碼

package com.xxzzycq.sort;

public class QuickSort
{
	
	public int data[];
	
	private int partition(int sortArray[], int low, int high)
	{
		int pivot = sortArray[low];
		
		while(low < high)
		{
			while((low < high)&&(sortArray[high] >= pivot))
			{
				high--;
			}
			
			if((low < high)&&(sortArray[high] < pivot))
			{
				sortArray[low++] = sortArray[high];
			}
			
			while((low < high)&&(sortArray[low] <= pivot))
			{
				low++;
			}
			
			if((low < high)&&(sortArray[low] > pivot))
			{
				sortArray[high--] = sortArray[low];
			}
		}
		
		sortArray[low] = pivot;
		
		return low;
	}
	
	public void sort(int low, int high)
	{
		if(low < high)
		{
			int result = partition(data, low ,high);
			sort(low, result - 1);
			sort(result + 1, high);
		}
	}
	 
	public void display()
	{
		for(int i = 0; i < data.length; i++)
		{
			System.out.print(data[i]);
			System.out.print(" ");
		}
		
	}
	
	public static void main(String[] args)
	{
		QuickSort qs = new QuickSort();
		
		int[] data = new int[]{45, 65, 30 , 85, 69, 78,5, 69, 987, 42, 15};
		
		qs.data = data;
		
		qs.sort(0, qs.data.length - 1);
		
		qs.display();
		
	}
}