add day 7

2025/7/Makefile

@@ -0,0 +1,69 @@
+# **************************************************************************** #
+#                                                                              #
+#                                                         :::      ::::::::    #
+#    Makefile                                           :+:      :+:    :+:    #
+#                                                     +:+ +:+         +:+      #
+#    By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+         #
+#                                                 +#+#+#+#+#+   +#+            #
+#    Created: 2024/07/17 15:48:36 by tomoron           #+#    #+#              #
+#    Updated: 2025/12/02 14:14:04 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 ../../libft .
+
+main.c:
+	cp ../../main.c .
+
+part1.c:
+	cp ../../part1.c .
+
+part2.c:
+	cp ../../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

2025/7/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);
+}

2025/7/part1.c

@@ -0,0 +1,51 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   part1.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/07/17 23:03:36 by tomoron           #+#    #+#             */
+/*   Updated: 2025/12/09 12:30:27 by tomoron          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "libft/libft.h"
+
+long int resolve_part1(char *input, char **split)
+{
+	(void)input;
+	int x = 0;
+	int y = 0;
+	long int res;
+
+	int map_height = 0;
+
+	res = 0;
+	while(split[map_height])
+		map_height++;
+
+	while(y < map_height - 1)
+	{
+		x = 0;
+		while(split[y][x])
+		{
+			if(split[y][x] == 'S')
+			{
+				if(split[y+1][x] == '^')
+				{
+					split[y + 1][x - 1] = 'S';
+					split[y + 1][x + 1] = 'S';
+					res++;
+				}
+				else
+					split[y + 1][x] = 'S';
+			}
+			x++;
+		}
+		y++;
+	}
+	return(res);
+}

2025/7/part2.c

@@ -0,0 +1,77 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   part2.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/07/17 23:03:36 by tomoron           #+#    #+#             */
+/*   Updated: 2025/12/09 12:37:36 by tomoron          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "libft/libft.h"
+
+long int get_timelines(char **map, int x, int y, long int *hash, int len)
+{
+	long int res;
+	int start_x;
+	int start_y;
+
+	start_x = x;
+	start_y = y;
+	if(hash[y * len + x])
+		return(hash[y * len + x]);
+
+	while(map[y] && map[y][x] == '.')
+		y++;	
+	if(map[y])
+	{
+		res = get_timelines(map, x+1, y, hash, len);
+		res += get_timelines(map, x-1, y, hash, len);
+	}
+	else
+		res = 1;
+	hash[start_y * len + start_x] = res;
+	return(res);
+
+}
+
+long int *create_hashmap(char **map)
+{
+	int len;
+	int height;
+
+	len = 0;
+	height = 0;
+	while(map[0][len])
+		len++;
+	while(map[height])
+		height++;
+	return(malloc(len * height * sizeof(long int)));
+}
+
+long int resolve_part2(char *input, char **split)
+{
+	(void)input;
+	long int res;
+	long int *hash;
+	int len;
+	int s_pos;
+
+	len = 0;
+	hash = create_hashmap(split);
+	s_pos = 0;
+	if(!hash)
+		return(0);
+	while(split[0][len])
+	{
+		if(split[0][len] == 'S')
+			s_pos = len;
+		len++;
+	}
+	res = get_timelines(split, s_pos, 0, hash,len);
+	return(res);
+}

2025/7/test

@@ -0,0 +1,16 @@
+.......S.......
+...............
+.......^.......
+...............
+......^.^......
+...............
+.....^.^.^.....
+...............
+....^.^...^....
+...............
+...^.^...^.^...
+...............
+..^...^.....^..
+...............
+.^.^.^.^.^...^.
+...............