change Makefile and add day 2

2025/2/part1.c

@@ -0,0 +1,71 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   part1.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/07/17 23:03:36 by tomoron           #+#    #+#             */
+/*   Updated: 2025/12/03 16:31:41 by tomoron          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include "libft/libft.h"
+
+static long int is_rep(long int nb)
+{
+	long int tmp;
+	int len;
+	long int div;
+
+	tmp = nb;
+	len = 1;
+	while(tmp > 9)
+	{
+		tmp /= 10;
+		len++;
+	}
+
+	div = pow(10, len / 2);
+	if (nb / div == nb % div)
+		return(nb);
+	return(0);
+}
+
+long int resolve_part1(char *input, char **split)
+{
+	(void)split;
+	long int start;
+	long int end;
+	long int res;
+
+	res = 0;
+	while(*input)
+	{
+		start = atol(input);
+		while(ft_isdigit(*input))
+			input++;
+		input++;
+		end = atol(input);
+		while(ft_isdigit(*input))
+			input++;
+		input++;
+		
+		if(start > end)
+		{
+			res = start;
+			start = end;
+			end = res;
+		}
+
+		while(start <= end)
+		{
+			res += is_rep(start);
+			start++;
+		}
+	}
+	return(res);
+}