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- #include <iostream>
- using namespace std;
- int main() {
- int i,j,k=0,temp=0,x,n,m=0;
- cin>>x;
- while(x--)
- {
- cin>>n;
- int a[n];
- for(i=0;i<n;i++)
- cin>>a[i];
- for(i=0;i<n-1;i++)
- {
- for(j=0;j<n-i-1;j++)
- {
- if(a[j]>a[j+1])
- {
- temp=a[j];
- a[j]=a[j+1];
- a[j+1]=temp;
- }
- }
- }
- int b[n];
- m=(n-1)/2;
- b[m]=a[0];
- i=m+1;
- j=m-1;
- k=1;
- do
- {
- b[i]=a[k];
- k++;
- b[j]=a[k];
- i++,j--;
- k++;
- }while(j>=0 && i<=n);
- for(i=0;i<n;i++)
- printf("%d ",b[i]);
- cout<<endl;
- }
- return 0;
- }
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