<strong><span style="font-size:14px;">#include<iostream>
using namespace std;
int main()
{
	int n;
	cin>>n;
	for(int i=1;i<=2*n+1;i++)
	cout<<n<<"  ";
	cout<<endl;
	for(int j=1;j<n;j++)
		{
			cout<<n<<"  ";
			for(int h=1;h<=j;h++)
				cout<<(n-h)<<"  ";
			for(int i=1;i<=2*n-(2*j+1);i++)
				cout<<(n-j)<<"  ";
			for(int h=j;h>0;h--)
				cout<<(n-h)<<"  ";
			cout<<n<<endl;
		}
			for(int j=n;j>=1;j--)
		{
			cout<<n<<"  ";
			for(int h=1;h<=j;h++)
				cout<<(n-h)<<"  ";
			for(int i=1;i<=2*n-(2*j);i++)       
				cout<<(n-j)<<"  ";
			for(int h=j-1;h>0;h--)
				cout<<(n-h)<<"  ";
			cout<<n<<endl;
		}
		for(int i=1;i<=2*n+1;i++)
	    cout<<n<<"  ";
	    cout<<endl;
	    for(int i=1;i<=6*n+1;i++)
	    cout<<"-";
		cout<<endl; 
		int i,j,k;
       for (i=1;i<=n*2-1;++i)
{
           if(i<=n) 
              k=i;
           else
              k=2*n-i;
           for (j=1;j<=k; ++j)
              cout <<j<<"  ";
           for(j=1;j<=(n-k)*2;++j)
              cout << k << "  ";
           for (j=k-1;j>=1;--j)
              cout <<j<<"  ";
           cout<<endl;
}
}</span></strong>

執行結果：