代码

#include <cstdio>
#include <algorithm>

int d[11];

// blank: ---- / 420.733 ms
void blank(const int size)
{
    int tot = 1, i, j, *pi, *pe = d+size-1;
    for (i = 0; i < size; i++) d[i] = i+1, tot *= i+1;
    while (tot--) {
        for (i = 0; i < size-1; i++) printf("%d ", d[i]); printf("%d\n", d[i]);
        // for (pi = d; pi != pe; pi++) printf("%d ", *pi); printf("%d\n", *pe);
    }
}

int main()
{
    blank(9);
    return 0;
}

评测结果