上一题的

#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    for(int i=1;i<=n;i++)
    {
        cout << " ";
        for(int j=1;j<=n;j++)
        {
            if((i-1)*n+j<10)
            {
                cout << " ";
            }
            cout << (i-1)*n+j << " ";
        }
        cout << endl;
    }
}

这一题的

#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    for(int i=n;i>=1;i--)
    {
        cout << " ";
        for(int j=1;j<=n;j++)
        {
            if((i-1)*n+j<10)
            {
                cout << " ";
            }
            cout << (i-1)*n+j << " ";
        }
        cout << endl;
    }
}

#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    int x = n * n, a[n + 1][n + 1];
    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= n; j++)
        {
            a[i][j] = x;
            x--;
        }
    }
    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= n / 2; j++)
        {
            swap(a[i][j], a[i][n - j + 1]);
        }
    }
    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= n; j++)
        {
            if (a[i][j] / 10 == 0)
            {
                cout << "  " << a[i][j];
            }
            else
            {
                cout << " " << a[i][j];
            }
        }
        cout << endl;
    }
    return 0;
}