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AC 了 用选择排序就好了啊#include<iostream>
using namespace std;
int main()
{
int d;
cin>>d;
while(d--)
{
int n;
int* p;
cin>>n;
p=new int[n];
int i,j;
for(i=0;i<n;i++)
cin>>p[i];
int s=0;
for(i=0;i<n;i++)
{
int min=p[i];
int k;
for(j=i;j<n;j++)
{
if(p[j]<min)
{
min=p[j];
k=j;
}
}
if(min!=p[i])
{
int t=p[i];
p[i]=min;
p[k]=t;
s++;
}
}
cout<<s<<endl;
}
return 0;
}
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