ex5pg93

#include<iostream>
using namespace std;
int main()
 {
  int n,i,j,a[25][25];
  cin>>n;
  for(i=1;i<=n;i++)
  {
   for(j=1;j<=n;j++)
   {
    if(i+j<=n+1)
      {
       a[i][j]=i+j-1;
      }
     if(i+j>n+1)
       {
        a[i][j]=a[n+1-j][n+1-i];
       }
    }
  }
     for(i=1;i<=n;i++)
      {
       for(j=1;j<=n;j++)
        cout<<a[i][j]<<" ";
        cout<<endl;
      }
   }