#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int board[9][9] = {0}, f[9] = {0};
void f1()
{
    printf("|");
    for (int i = 0; i < 23; i++)
    {
        printf("-");
    }
    printf("|\n");
}
void operate()
{
    for (int i = 0; i < 9; i++)
    {
        if (i % 3 == 0)
        {
            f1();
        }
        printf("| ");
        for (int j = 0; j < 9; j++)
        {
            if (j % 3 == 0 && j)
            {
                printf("| ");
            }
            printf("%d ", board[i][j]);
        }
        printf("|\n");
    }
    f1();
}
void Random(int n)
{
    int k = 9;
    while (k)
    {
        int i = rand() % 3, j =rand() % 9;
        i += (n - 1) * 3;
        if (f[i] == 0)
        {
            if (board[i][j] == 0)
            {
                board[i][j] = k;
                k--;
            }
        }
        int cnt = 0;
        for (int m = 0; m < 9; m++)
        {
            if (board[i][m])
            {
                cnt++;
            }
        }
        if (cnt == 3)
        {
            f[i] = 1;
        }
    }
}
int main()
{
    printf("随机生成一个9×9的不完整的矩阵：\n");
    srand(time(NULL));
    Random(1);
    Random(2);
    Random(3);
    operate();
}