part 1 backup

2024/11/part1.c

@@ -0,0 +1,128 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   part1.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   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       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "libft/libft.h"
+
+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->value = atol(input);
+		if(prev)
+			prev->next = cur;
+		else
+			res = cur;
+		prev = cur;
+		while(ft_isdigit(*input))
+			input++;
+		while(*input == ' ')
+			input++;
+	}
+	return(res);
+}
+
+int count_digits(long int nb)
+{
+	int res;
+
+	res = 1;
+	while(nb > 9)
+	{
+		nb /= 10;
+		res++;
+	}
+	return(res);
+}
+
+void split_pebble(t_pebble *pebble)
+{
+	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;
+	i = 0;
+	exp = 1;
+	while(i < len)
+	{
+		new->value += (pebble->value % 10) * exp;
+		pebble->value /= 10;
+		exp *= 10;
+		i++;
+	}
+	tmp = pebble->next;
+	pebble->next = new;
+	new->next = tmp;
+}
+
+long int update(t_pebble *pebble)
+{
+	long int res;
+
+	res = 0;
+	while(pebble)
+	{
+		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++;
+	}
+	return(res);
+}
+
+long int resolve_part1(char *input, char **split)
+{
+	(void)split;
+	t_pebble *pebble;
+	pebble = get_input(input);
+	int i;
+	long int res;
+
+	i = 0;
+	res = 0;
+	while(i < 25)
+	{
+		printf("step : %d, len :%ld\n",i, update(pebble));
+		i++;
+	}
+	while(pebble)	
+	{
+		res++;
+		pebble = pebble->next;
+	}
+	return(res);
+}