快速排序

#include <iostream>

using namespace std;
int Partion(int arr[],int low,int high)
{

    int index_low=low;
    int index_high=high;
    while(index_low<index_high)
    {
        while(index_low<index_high&&arr[index_low]<arr[index_high])
        {
            index_high--;
        }
        if(arr[index_low]>arr[index_high])
        {
            swap(arr[index_low],arr[index_high]);
            index_low++;
        }
        while(index_low<index_high&&arr[index_low]<arr[index_high])
        {
            index_low++;

        }
        if(arr[index_low]>arr[index_high])
        {
            swap(arr[index_low],arr[index_high]);
            index_high--;
        }
    }

    return index_high;



}
void QSort(int arr[],int low,int high)
{

    int mid=Partion(arr,low,high);
    if(low<mid-1)
    {
        QSort(arr,low,mid-1);
    }
    if(mid+1<high)
    {
        QSort(arr,mid+1,high);
    }
}


int main()
{
    int arr[]={32,434,54,432,435,333,555,666,76,312,53};
    //Partion(arr,0,3);
    QSort(arr,0,10);
    for(int i=0;i<=10;i++)
    {
        cout<<arr[i]<<" ";
    }

    //cout << "Hello world!" << endl;
    return 0;
}

 

posted on 2016-08-01 17:29  达达123567  阅读(163)  评论(0编辑  收藏  举报

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