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傻逼了,==写成了=,wa了一次,题水我更水,附ac代码#include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;
int main()
{
int a[10001],b[10001];
int t,n;
scanf("%d",&t);
while(t--)
{
scanf("%d",&n);
for(int i=0;i<n;i++)
{
scanf("%d",&a[i]);
b[i]=a[i];
}
sort(b,b+n);
int v=0;
for(int i=0;i<n;i++)
{
if(a[i]!=b[i])
{
for(int j=i+1;j<n;j++)
{
if(a[j]==b[i])
{
swap(a[i],a[j]);
v++;
break;
}
}
}
}
cout<<v<<endl;
}
return 0;
}
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