add day 11

2024/11/Makefile

@@ -0,0 +1,69 @@
+# **************************************************************************** #
+#                                                                              #
+#                                                         :::      ::::::::    #
+#    Makefile                                           :+:      :+:    :+:    #
+#                                                     +:+ +:+         +:+      #
+#    By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+         #
+#                                                 +#+#+#+#+#+   +#+            #
+#    Created: 2024/07/17 15:48:36 by tomoron           #+#    #+#              #
+#    Updated: 2024/12/11 18:59:26 by tomoron          ###   ########.fr        #
+#                                                                              #
+# **************************************************************************** #
+
+SRCS =	main.c\
+		part1.c\
+		part2.c
+
+OBJS = $(SRCS:.c=.o)
+
+FLAGS = -Wextra -Werror -Wall -g
+
+LIB = libft/libft.a
+
+all: $(LIB) a.out test
+	cp test cur_input
+	./a.out
+
+f: $(LIB) a.out input
+	cp input cur_input
+	./a.out
+
+test: 
+	touch test
+
+input:
+	touch input
+
+cp:
+	cp part1.c part2.c
+	sed -i 's/resolve_part1/resolve_part2/g' part2.c
+
+$(LIB): libft
+	make -C libft
+
+libft:
+	cp -r ~/Desktop/aoc/libft .
+
+main.c:
+	cp ~/Desktop/aoc/main.c .
+
+part1.c:
+	cp ~/Desktop/aoc/part1.c .
+
+part2.c:
+	cp ~/Desktop/aoc/part2.c .
+
+a.out: main.c $(OBJS) $(LIB)
+	clang $(FLAGS) $(OBJS) $(LIB)
+
+clean:
+	rm -rf $(OBJS)
+	rm -rf libft
+
+fclean: clean
+	rm -rf a.out
+
+.c.o:
+	clang $(FLAGS) -c $< -o $@
+
+.PHONY: t all clean fclean cp

2024/11/main.c

@@ -0,0 +1,67 @@
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "libft/libft.h"
+
+long int resolve_part1(char *input, char **split);
+long int resolve_part2(char *input, char **split);
+
+char *get_input(char *file)
+{
+	int fd;
+	int rd_len;
+	char buffer[1000];
+	int len;
+	char *res;
+
+	fd = open(file, O_RDONLY);
+	len = 0;
+	if(fd < 0)
+		return(0);
+	rd_len = -1;
+	while(rd_len)
+	{
+		rd_len = read(fd, buffer, 1000);
+		len+= rd_len;
+	}
+	close(fd);
+	res = malloc(len + 1);
+	if(!res)
+		return(0);
+	fd = open(file, O_RDONLY);
+	if(fd < 0)
+		return(0);
+	rd_len = read(fd,res, len);
+	res[len] = 0;
+	close(fd);
+	return(res);
+}
+
+int main(void)
+{
+	char *input;
+	char *input_cpy;
+	char **split;
+
+	input = get_input("cur_input");
+	input_cpy = ft_strdup(input);
+	if(!input || !input_cpy)
+	{
+		fprintf(stderr, "file read error\n");
+		return(1);
+	}
+	split = ft_split(input, '\n');
+	if(!split)
+		return(1);
+	printf("result part 1: %ld\n", resolve_part1(input, split));
+	ft_free_str_arr(split);
+	split = ft_split(input_cpy, '\n');
+	if(!split)
+		return(1);
+	printf("result part 2: %ld\n", resolve_part2(input, split));
+	ft_free_str_arr(split);
+	free(input);
+	free(input_cpy);
+	return(0);
+}

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(*l) / 2;
-	len = count_digits(pebble->value) / 2;
+	*r = 0;
-	new->value = 0;
 	i = 0;
 	exp = 1;
 	while(i < len)
 	{
-		new->value += (pebble->value % 10) * exp;
+		*r += (*l % 10) * exp;
-		pebble->value /= 10;
+		*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;
+	if(depth == 25)
-	while(pebble)
+		return(1);
+	if(nb == 0)
+		return(get_nb(1, depth + 1));
+	else if(count_digits(nb) % 2 == 0)
 	{
-		if(!pebble->value)
+		split_pebble(&nb, &tmp);
-			pebble->value = 1;
+		res = get_nb(nb, depth + 1);
-		else if(count_digits(pebble->value) % 2 == 0)
+		return(res + get_nb(tmp, depth + 1));
-		{
-			split_pebble(pebble);
-			pebble = pebble->next;
-		}
-		else
-			pebble->value *= 2024;
-		pebble = pebble->next;
-		res++;
 	}
-	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));
+		res += get_nb(pebble->value, 0);
-		i++;
-	}
-	while(pebble)	
-	{
-		res++;
 		pebble = pebble->next;
 	}
 	return(res);

2024/11/part2.c

@@ -0,0 +1,132 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   part2.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/07/17 23:03:36 by tomoron           #+#    #+#             */
+/*   Updated: 2024/12/11 22:52:44 by tomoron          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "libft/libft.h"
+
+#define MAX_NB_MAP 1000
+
+typedef struct s_pebble
+{
+	long int value;
+	struct s_pebble *next;
+}	t_pebble;
+
+static t_pebble *get_input(char *input)
+{
+	t_pebble *res;
+	t_pebble *prev;
+	t_pebble *cur;
+
+	prev = 0;
+	while(*input && (ft_isdigit(*input) || *input == ' '))
+	{
+		cur = malloc(sizeof(t_pebble));
+		cur->next = 0;
+		cur->value = atol(input);
+		if(prev)
+			prev->next = cur;
+		else
+			res = cur;
+		prev = cur;
+		while(ft_isdigit(*input))
+			input++;
+		while(*input == ' ')
+			input++;
+	}
+	return(res);
+}
+
+static int count_digits(long int nb)
+{
+	int res;
+
+	res = 1;
+	while(nb > 9)
+	{
+		nb /= 10;
+		res++;
+	}
+	return(res);
+}
+
+static void split_pebble(long int *l, long int *r)
+{
+	int len;
+	long exp;
+	int i;
+
+	len = count_digits(*l) / 2;
+	*r = 0;
+	i = 0;
+	exp = 1;
+	while(i < len)
+	{
+		*r += (*l % 10) * exp;
+		*l /= 10;
+		exp *= 10;
+		i++;
+	}
+}
+
+static long int get_nb(long int nb, long int depth, long int *map)
+{
+	long int res;
+	long int tmp;
+	long int fuck;
+
+	fuck = nb;
+	if(depth == 75)
+		return(1);
+	if(map && nb >= 0 && nb < MAX_NB_MAP && map[(depth * MAX_NB_MAP) + nb])
+		return(map[(depth * MAX_NB_MAP) + nb]);
+	res = 0;
+	if(nb == 0)
+		res = get_nb(1, depth + 1, map);
+	else if(count_digits(nb) % 2 == 0)
+	{
+		split_pebble(&nb, &tmp);
+		res = get_nb(nb, depth + 1, map);
+		res += get_nb(tmp, depth + 1, map);
+	}
+	else
+		res = get_nb(nb * 2024, depth + 1, map);
+	if(map && fuck >= 0 && fuck < MAX_NB_MAP)
+		map[(depth * MAX_NB_MAP) + fuck] = res;
+	return(res);
+}
+
+long int resolve_part2(char *input, char **split)
+{
+	(void)split;
+	(void)input;
+	t_pebble *pebble;
+	long int res;
+	long int *map;		
+	size_t		map_len;
+	(void)get_input;
+
+	res = 0;
+	pebble = get_input(input);
+	map_len = MAX_NB_MAP * 75 * sizeof(long int);
+	map = malloc(map_len);
+	bzero(map, map_len);
+	while(pebble)
+	{
+		res += get_nb(pebble->value, 0, map);
+		pebble = pebble->next;
+	}
+	free(map);
+	return(res);
+}

2024/11/test

@@ -0,0 +1 @@
+125 17