谁说要用二维数组的？我不用数组都行，就是极端思想嘛（类似于反弹思想或曲折思想那种），🍳（谐音梗，煎蛋=简单）！

已AC，请放心食用

#include <iostream>
using namespace std;
int main()
{
    int n, x, s;
    cin >> n;
    for (int i = 1; i <= n; i++)
    {
        x = i;
        s = 0;
        for (int j = 1; j <= n; j++)
        {
            cout << "  " << x;
            if (x == 1)
            {
                s = 0;
            }
            if (x == n)
            {
                s = 1;
            }
            if (s == 0)
            {
                x++;
            }
            else
            {
                x--;
            }
        }
        cout << endl;
    }
    return 0;
}

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