这段代码应该产生一个已解出的数独矩阵,但是 while 语句将其置于无限循环中。删除 while 语句给了我一个矩阵,其中一些值仍然是 99 或 0。而且我不能一个一个地唯一地生成 9 个随机数。如果要运行并检查代码,请删除 while 语句。
int a[9][9];
int b[9][9];
int inputvalue(int x, int y, int value) //checks horizontally, vertically and 3*3matrix for conflicts
{
int i, j;
for (i = 0; i < 9; i++)
{
if (value == a[x][i] || value == a[i][y])
return 0;
}
for (i = (x / 3) * 3; i <= ((x / 3) * 3) + 2; i++)
{
for (j = (y / 3) * 3; j <= ((y / 3) * 3) + 2; j++)
if (b[i][j] == value)
return 0;
}
return value;
}
int main()
{
int i, j, k;
unsigned int s;
cout << "sudoku\n";
time_t t;
s = (unsigned) time(&t);
srand(s);
for (i = 0; i < 9; i++)
{
for (j = 0; j < 9; j++)
a[i][j] = 99;
}
for (i = 0; i < 9; i++)
{
for (j = 1; j <= 9; j++)//j is basically the value being given to cells in the matrix while k assigns the column no.
while(a[i][k]==99||a[i][k]==0)
{
k = rand() % 9;
a[i][k] = inputvalue(i, k, j);
}
}
for (i = 0; i < 9; i++)
{
for (j = 0; j < 9; j++)
{
cout << a[i][j] << " ";
}
cout << endl;
}
return 0;
getch();
}