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快速排序
阅读量:225 次
发布时间:2019-02-28

本文共 577 字,大约阅读时间需要 1 分钟。

归并排序是每一次的递归调用会确定正确排序中的一个值。

然后这时只确定了个元素的位置。
再通过

fun(left,i-1);fun(i+1,right);

确定这个元素两边的正确排序的位置

#include 
using namespace std;int a[5005];int fun(int left,int right){ if(left >= right) return 0; int i = left; int j = right; int x = a[i]; while(i < j){ while(i < j && a[j] >= x) j--; if(i < j) a[i++] = a[j]; while(i < j && a[i] < x) i++; if(i < j) a[j--] = a[i]; } a[i] = x; fun(left,i-1); fun(i+1,right); return 0;}int main(){ int n; scanf("%d",&n); for(int i = 0;i < n;i++){ scanf("%d",a+i); } fun(0,n-1); for(int i = 0;i < n;i++){ printf("%d\n",a[i]); } return 0;}

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