C#算法-------(四)快速排序

前面我已经推出了三种排序的算法,比较简单。今天我又写了快速排序的算法。希望多多指教。具体的思想,我不做答了。前人的经验。

using System;

namespace QuickSorter
{
public class QuickSorter
{
private void Swap(ref int l,ref int r)
{
int s;
s=l;
l=r;
r=s;
}
public void Sort(int [] list,int low,int high)
{
int pivot;
int l,r;
int mid;
if(high<=low)
return;
else if(high==low+1)
{
if(list[low]>list[high])
Swap(ref list[low],ref list[high]);
return;
}
mid=(low+high)>>1;
pivot=list[mid];
Swap(ref list[low],ref list[mid]);
l=low+1;
r=high;
do
{
while(l<=r&&list[l]

 1<pivot) l++;="" while(list[r]="">=pivot)   
 2r--;   
 3if(l&lt;r)   
 4Swap(ref list[l],ref list[r]);   
 5}while(l&lt;r);   
 6list[low]=list[r];   
 7list[r]=pivot;   
 8if(low+1&lt;r)   
 9Sort(list,low,r-1);   
10if(r+1&lt;high)   
11Sort(list,r+1,high);   
12}   
13}   
14public class MainClass   
15{   
16public static void Main()   
17{   
18int[] iArrary=new int[]{1,5,3,6,10,55,9,2,87,12,34,75,33,47};   
19QuickSorter q=new QuickSorter();   
20q.Sort(iArrary,0,13);   
21for(int m=0;m&lt;=13;m++)   
22Console.WriteLine("{0}",iArrary[m]);   
23}   
24} 
25
26}   
27已经编译通过,运行环境:windows xp VC#.net 7.0 
28
29作者: 顾剑辉</pivot)>
Published At
Categories with Web编程
Tagged with
comments powered by Disqus