public function solve()
{
$input_string = Helpers::getStringInputForDay(3);
$input_array = str_split($input_string);
$map = [];
$x = 0;
$y = 0;
$map[$x][$y] = 1;
$houses = 1;
foreach ($input_array as $coord) {
switch ($coord) {
case '^':
$y++;
break;
case '>':
$x++;
break;
case 'v':
$y--;
break;
case '<':
$x--;
break;
}
if (isset($map[$x][$y])) {
$map[$x][$y]++;
} else {
$map[$x][$y] = 1;
$houses++;
}
}
echo $houses;
}
public function solve()
{
$input_string = Helpers::getStringInputForDay(1);
$input_array = str_split($input_string);
$floor = 0;
foreach ($input_array as $char) {
switch ($char) {
case '(':
$floor++;
break;
case ')':
$floor--;
break;
}
}
echo $floor;
}
public function solve()
{
$input_string = Helpers::getStringInputForDay(1);
$input_array = str_split($input_string);
$floor = 0;
foreach ($input_array as $position => $char) {
switch ($char) {
case '(':
$floor++;
break;
case ')':
$floor--;
break;
}
if ($floor == -1) {
echo $position + 1;
return;
}
}
}
public function solve()
{
$input_string = Helpers::getStringInputForDay(3);
$input_array = str_split($input_string);
$map = [];
$x = 0;
$y = 0;
$a = 0;
$b = 0;
$map[$x][$y] = 1;
$map[$a][$b]++;
$houses = 1;
$array_length = count($input_array);
for ($i = 0; $i < $array_length; $i++) {
switch ($input_array[$i]) {
case '^':
if ($i % 2 == 0) {
$b++;
} else {
$y++;
}
break;
case '>':
if ($i % 2 == 0) {
$a++;
} else {
$x++;
}
break;
case 'v':
if ($i % 2 == 0) {
$b--;
} else {
$y--;
}
break;
case '<':
if ($i % 2 == 0) {
$a--;
} else {
$x--;
}
break;
}
if ($i % 2 == 0) {
if (isset($map[$a][$b])) {
$map[$a][$b]++;
} else {
$map[$a][$b] = 1;
$houses++;
}
} else {
if (isset($map[$x][$y])) {
$map[$x][$y]++;
} else {
$map[$x][$y] = 1;
$houses++;
}
}
}
echo $houses;
}
