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各位大哥!!!帮小弟看看呗!!!#include<iostream>
using namespace std;
void f(int data[],int m)
{
int temp=data[0];
int tt;
for(int i=1;i<m;i++)
{
if(temp>data[i])
temp=data[i];
}
for(int j=1;j<m;j++)
{
if(tt<data[j])
tt=data[j];
}
cout<<(tt-temp)*2<<endl;
}
int main()
{
int m;
cin>>m;
while(m--)
{
int n;
int data[30];
cin>>n;
for(int i=0;i<n;i++)
{
cin>>data[i];
}
f(data,n);
}
return 0;
}
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