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c语言快速排序

weipeng2k 2022-04-07 阅读 56
c语言

#include<stdio.h>
#define maxsize 100
void quick(int *a,int low,int high)
{
    int l=low,r=high;
    a[0]=a[low];
    while(low<high)
    {
        while(low<high&&a[0]<=a[high])
        {
            high--;
        }
        if(low<high)
        {
            a[low]=a[high];
        }
        while(low<high&&a[0]>=a[low])
        {
            low++;
        }
        if(low<high)
        {
            a[high]=a[low];
        }
    }
    a[low]=a[0];
    if(l<low-1)
        quick(a,l,low-1);
    if(low+1<r)
        quick(a,low+1,r);
    return;
}
int main()
{
    int a[maxsize];
    int n;
    int i;
    scanf("%d",&n);
    for(i=1; i<=n; i++)
    {
        scanf("%d",&a[i]);
    }
    quick(a,1,n);
    for(i=1; i<=n; i++)
    {
        printf("%d",a[i]);
    }
    return 0;
}

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