Answer Posted / rohit1729

#include<iostream>
using namespace std;
int main()
{
int i,j,k,t,n,c,a[20];
cin>>t;
for(k=0;k<20;k++)
a[k]=(k+1);
while(t--)
{
cin>>n;
for(i=0;i<n;i++)
{
c=i-1;
for(j=0;j<(2*i+1);j++)
{
if(i>=j)
cout<<a[j];
else
{
cout<<a[c];
c--;
}
}cout<<" ";
}cout<<endl;
}
return 0;
}

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