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Oct 15th, 2018
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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. int i,j,k=0,temp=0,x,n,m=0;
  6. cin>>x;
  7. while(x--)
  8. {
  9. cin>>n;
  10. int a[n];
  11. for(i=0;i<n;i++)
  12. cin>>a[i];
  13. for(i=0;i<n-1;i++)
  14. {
  15. for(j=0;j<n-i-1;j++)
  16. {
  17. if(a[j]>a[j+1])
  18. {
  19. temp=a[j];
  20. a[j]=a[j+1];
  21. a[j+1]=temp;
  22.  
  23. }
  24. }
  25. }
  26. int b[n];
  27. m=(n-1)/2;
  28. b[m]=a[0];
  29. i=m+1;
  30. j=m-1;
  31. k=1;
  32.  
  33. do
  34. {
  35. b[i]=a[k];
  36. k++;
  37. b[j]=a[k];
  38. i++,j--;
  39. k++;
  40. }while(j>=0 && i<=n);
  41. for(i=0;i<n;i++)
  42. printf("%d ",b[i]);
  43.  
  44.  
  45. cout<<endl;
  46. }
  47. return 0;
  48. }
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