add day 7

2024/7/Makefile

@@ -0,0 +1,69 @@
+# **************************************************************************** #
+#                                                                              #
+#                                                         :::      ::::::::    #
+#    Makefile                                           :+:      :+:    :+:    #
+#                                                     +:+ +:+         +:+      #
+#    By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+         #
+#                                                 +#+#+#+#+#+   +#+            #
+#    Created: 2024/07/17 15:48:36 by tomoron           #+#    #+#              #
+#    Updated: 2024/10/29 20:43:12 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

2024/7/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);
+}

2024/7/part1.c

@@ -0,0 +1,116 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   part1.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/07/17 23:03:36 by tomoron           #+#    #+#             */
+/*   Updated: 2024/12/07 13:14:36 by tomoron          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "libft/libft.h"
+
+static int *get_numbers(char *line, int *len)
+{
+	int i;
+	int *res;
+
+	*len = 0;
+	i = 0;
+	while(line[i])
+	{
+		if(line[i] == ' ')
+			(*len)++;
+		i++;
+	}
+	*len += 1;
+	res = malloc((*len) * sizeof(int));
+	i = 0;
+	while(*line)
+	{
+		res[i] = ft_atoi(line);
+		i++;
+		while(ft_isdigit(*line))
+			line++;
+		while(*line && !ft_isdigit(*line))
+			line++;
+	}
+	return(res);
+}
+
+static int next_op(char *op, int i)
+{
+	while(i >= 0 && op[i] == '+')
+	{
+		op[i] = '*';
+		i--;
+	}
+	if(i < 0)
+		return(0);
+	if(i >= 0)
+		op[i] = '+';
+	return(1);
+}
+
+static long int test_nbrs(long int test_val, int *nbrs, char *op, int len)
+{
+	int i;
+	long int tmp;
+
+	tmp = 0;
+	while(tmp != test_val)
+	{
+		tmp = *nbrs;
+		i = 1;
+		while(i < len)
+		{
+			if(op[i - 1] == '+')
+				tmp += nbrs[i];
+			else if(op[i - 1] == '*')
+				tmp *= nbrs[i];
+			if(tmp > test_val)
+				break;
+			i++;
+		}
+		if(!next_op(op, i - 1) && tmp != test_val)
+			return(0);
+		
+	}
+	return(test_val);
+}
+
+static long int check_line(char *line)
+{
+	long int test_val;
+	int		*nbrs;
+	int		len;
+	char	*op;
+
+	test_val = atol(line);
+	while(ft_isdigit(*line))
+		line++;
+	while(*line && !ft_isdigit(*line))
+		line++;
+	nbrs = get_numbers(line, &len);
+	op = malloc(len);
+	ft_memset(op, '*', len);
+	return(test_nbrs(test_val, nbrs, op, len));
+}
+
+long int resolve_part1(char *input, char **split)
+{
+	(void)input;
+	long int res;
+	
+	res = 0;
+	while(*split)
+	{
+		res+= check_line(*split);
+		split++;
+	}
+	return(res);
+}

2024/7/part2.c

@@ -0,0 +1,137 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   part2.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/07/17 23:03:36 by tomoron           #+#    #+#             */
+/*   Updated: 2024/12/07 13:17:09 by tomoron          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "libft/libft.h"
+
+static int *get_numbers(char *line, int *len)
+{
+	int i;
+	int *res;
+
+	*len = 0;
+	i = 0;
+	while(line[i])
+	{
+		if(line[i] == ' ')
+			(*len)++;
+		i++;
+	}
+	*len += 1;
+	res = malloc((*len) * sizeof(int));
+	i = 0;
+	while(*line)
+	{
+		res[i] = ft_atoi(line);
+		i++;
+		while(ft_isdigit(*line))
+			line++;
+		while(*line && !ft_isdigit(*line))
+			line++;
+	}
+	return(res);
+}
+
+static int next_op(char *op, int i)
+{
+	while(i >= 0 && op[i] == '|')
+	{
+		op[i] = '*';
+		i--;
+	}
+	if(i < 0)
+		return(0);
+	if(op[i] == '*')
+		op[i] = '+';
+	else if(op[i] == '+')
+		op[i] = '|';
+	return(1);
+}
+
+static long int mult_nb(long int tmp, int nb)
+{
+	while(nb)
+	{
+		nb /= 10;
+		tmp *= 10;
+	}
+	return(tmp);
+}
+
+static long int test_nbrs(long int test_val, int *nbrs, char *op, int len)
+{
+	int i;
+	long int tmp;
+
+	tmp = 0;
+	while(tmp != test_val)
+	{
+		tmp = *nbrs;
+		i = 1;
+		while(i < len)
+		{
+			if(op[i - 1] == '+')
+				tmp += nbrs[i];
+			else if(op[i - 1] == '*')
+				tmp *= nbrs[i];
+			else if(op[i - 1] == '|')
+			{
+				tmp = mult_nb(tmp, nbrs[i]);
+				tmp += nbrs[i];
+			}
+			if(tmp > test_val)
+				break;
+			i++;
+		}
+		if(i == len)
+			i--;
+		if(!next_op(op, i - 1) && tmp != test_val)
+			return(0);
+		
+	}
+	return(test_val);
+}
+
+static long int check_line(char *line)
+{
+	long int test_val;
+	int		*nbrs;
+	int		len;
+	char	*op;
+
+	test_val = atol(line);
+	while(ft_isdigit(*line))
+		line++;
+	while(*line && !ft_isdigit(*line))
+		line++;
+	nbrs = get_numbers(line, &len);
+	op = malloc(len);
+	ft_memset(op, '*', len);
+	if(test_nbrs(test_val, nbrs, op, len))
+		return(test_val);
+	return(0);
+}
+
+long int resolve_part2(char *input, char **split)
+{
+	(void)input;
+	long int res;
+	
+	res = 0;
+	while(*split)
+	{
+		res+= check_line(*split);
+		split++;
+	}
+	return(res);
+}

2024/7/test

@@ -0,0 +1,9 @@
+190: 10 19
+3267: 81 40 27
+83: 17 5
+156: 15 6
+7290: 6 8 6 15
+161011: 16 10 13
+192: 17 8 14
+21037: 9 7 18 13
+292: 11 6 16 20