//___________________________________________________________________________________________
Bool_t KVIntegerList::Remove(Int_t val, Int_t freq)
{
//On retire "freq" fois la valeur val
//la methode retourne kTRUE si cette valeur etait effectivement presente, kFALSE sinon
//Si freq > la frequence initiale ( KVIntegerList::GetFrequency(Int_t ) )de la valeur, on la retire complétement
//
return remove_values(val, freq);
}
/* randomly swap out values, by num_itr,
* number of iterations, of known solved puzzle;
* should result in a new (completed) random puzzle
*/
static int build_puzzle(int* puzzle, int* matrix)
{
int num_itr = 0, x = 0, y = 0;
puts("generating sudoku puzzle ...");
/* There is a stdlib call "rand"; this function is tuned primarily for speed
* and distribution, not for unpredictability. Almost all built-in random
* functions for various languages and frameworks use this function by
* default. There are also "cryptographic" random number generators that are
* much less predictable, but run much slower. These should be used in any sort
* of security-related application. - tylerl
* http://stackoverflow.com/questions/822323/how-to-generate-a-random-number-in-c
*/
#ifdef JSW_RANDOM
puts("using jsw_srand()");
jsw_seed(time(NULL));
num_itr = (jsw_rand() % 1000000);
#else
puts("using srand()");
srand(time(NULL));
num_itr = (rand() % 1000000);
#endif
printf("number iterations: %d\n", num_itr);
for (int i = 0; i<num_itr; i++)
{
#ifdef JSW_RANDOM
x = (jsw_rand() % 9);
y = (jsw_rand() % 9);
#else
x = (rand() % 9);
y = (rand() % 9);
#endif
x++;
y++;
/* printf("x = %d, y = %d\n", x, y); */
swap_numbers(puzzle, x, y);
}
print_grid(puzzle_solution);
remove_values(matrix);
return 0;
}