#include<bits/stdc++.h>
using namespace std;
int a[20]={9,5,12,3,6,44,55,221,15,51,69,100};
int b[10086];//临时数组
void hb(int low,int mid,int high)
{
int n=high-low+1;
int i=low,end1=mid;
int j=mid+1,end2=high;
int k=0;
while(i<=end1&&j<=end2)
{
if(a[i]<=a[j]) b[k]=a[i++];//将a[i],a[j]较小的那个赋给b[k] ,改变if里的大小可以改变排序方式（从小到大或从大到小
else b[k]=a[j++];
k++;
}
while(i<=end1) b[k++]=a[i++];//
while(j<=end2) b[k++]=a[j++];
for(int x=0;x<k;x++)
a[low+x]=b[x];
}
void gbpx(int low,int high)
{
if(low<high)
{
int mid=low+(high-low)/2;//二分
gbpx(low,mid);//左递归
gbpx(mid+1,high);//右递归
hb(low,mid,high);//二路合并
}
}
int main()
{
gbpx(0,11);
for(int i=1;i<=10;i++)
cout<<a[i]<<' ';
return 0;
}
注：老老实实地从0开始