#include <iostream>
using namespace std;
int a[105][105],h,k=1,l,hy=0;
int main(){
    int n;
    cin >> n;
    hy = n-1;
    for(int i = 1;i<=n;i++) {
        h = n-hy;
        l = 1;
        for (; h != 0;) {
            a[h][l] = k++;
            h--;
            l++;
        }
        hy--;
    }
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++) {
            if (a[i][j] == 0){
                continue;
            }else {
                printf("%d ", a[i][j]);
            }
        }
        cout << "\n";
    }
}

（this is 博客on 白的码）