static i32
get_start(const char *str, char const *set) {
	i32	check;

    for (i32 i = 0; str[i]; i++) {
		check = 0;
        for (i32 y = 0; set[y]; y++) 
			if (str[i] == set[y])
				check = 1;
		if (check == 0)
			return (i);
	}
	return (0);
}

static i32
get_end(const char *str, char const *set) {
	i32	check;

    for (i32 i = ft_strlen(str) - 1; i > 0; i--) {
		check = 0;
        for (i32 y = 0; set[y]; y++)
			if (str[i] == set[y])
				check = 1;
		if (check == 0)
			return (i + 1);
	}
	return (0);
}

char *
ft_strtrim(char const *s1, char const *set) {
	char	*str;

	if (s1 == NULL || set == NULL)
		return (NULL);
	i32 start = get_start(s1, set);
	i32 end = get_end(s1, set);
	str = malloc(end - start + 1);
	if (str == NULL)
		return (NULL);
    i32 i = 0;
    for (; start < end; i++) {
		str[i] = s1[start];
		i++;
		start++;
	}
	str[i] = '\0';
	return (str);
}