add day 11

2024/11/part1.c

@@ -6,7 +6,7 @@
 /*   By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/07/17 23:03:36 by tomoron           #+#    #+#             */
-/*   Updated: 2024/12/11 17:17:34 by tomoron          ###   ########.fr       */
+/*   Updated: 2024/12/11 22:19:45 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -30,6 +30,7 @@ static t_pebble *get_input(char *input)
 	while(*input && (ft_isdigit(*input) || *input == ' '))
 	{
 		cur = malloc(sizeof(t_pebble));
+		cur->next = 0;
 		cur->value = atol(input);
 		if(prev)
 			prev->next = cur;
@@ -44,7 +45,7 @@ static t_pebble *get_input(char *input)
 	return(res);
 }
 
-int count_digits(long int nb)
+static int count_digits(long int nb)
 {
 	int res;
 
@@ -57,71 +58,57 @@ int count_digits(long int nb)
 	return(res);
 }
 
-void split_pebble(t_pebble *pebble)
+static void split_pebble(long int *l, long int *r)
 {
-	t_pebble *new;
-	t_pebble *tmp;
 	int len;
 	long exp;
 	int i;
 
-	new = malloc(sizeof(t_pebble));
-	len = count_digits(pebble->value) / 2;
-	new->value = 0;
+	len = count_digits(*l) / 2;
+	*r = 0;
 	i = 0;
 	exp = 1;
 	while(i < len)
 	{
-		new->value += (pebble->value % 10) * exp;
-		pebble->value /= 10;
+		*r += (*l % 10) * exp;
+		*l /= 10;
 		exp *= 10;
 		i++;
 	}
-	tmp = pebble->next;
-	pebble->next = new;
-	new->next = tmp;
 }
 
-long int update(t_pebble *pebble)
+static long int get_nb(long int nb, int depth)
 {
 	long int res;
+	long int tmp;
 
-	res = 0;
-	while(pebble)
+	if(depth == 25)
+		return(1);
+	if(nb == 0)
+		return(get_nb(1, depth + 1));
+	else if(count_digits(nb) % 2 == 0)
 	{
-		if(!pebble->value)
-			pebble->value = 1;
-		else if(count_digits(pebble->value) % 2 == 0)
-		{
-			split_pebble(pebble);
-			pebble = pebble->next;
-		}
-		else
-			pebble->value *= 2024;
-		pebble = pebble->next;
-		res++;
+		split_pebble(&nb, &tmp);
+		res = get_nb(nb, depth + 1);
+		return(res + get_nb(tmp, depth + 1));
 	}
-	return(res);
+	else
+		return(get_nb(nb * 2024, depth + 1));
 }
 
 long int resolve_part1(char *input, char **split)
 {
 	(void)split;
+	(void)input;
 	t_pebble *pebble;
 	pebble = get_input(input);
-	int i;
 	long int res;
+	(void)get_input;
 
-	i = 0;
 	res = 0;
-	while(i < 25)
+	while(pebble)
 	{
-		printf("step : %d, len :%ld\n",i, update(pebble));
-		i++;
-	}
-	while(pebble)	
-	{
-		res++;
+		res += get_nb(pebble->value, 0);
 		pebble = pebble->next;
 	}
 	return(res);