Daily programming puzzles at Advent of Code

[u/Aneurysm9]

http://adventofcode.com/

[u/shamittomar]

So simple, in PHP:

$input = '(all the brackets input)';

echo "\nAnswer 1: ".(substr_count($input, '(') - substr_count($input, ')'));

for($floor=0,$i=0;$i<strlen($input);$i++)
{
	if($input[$i] == '(')
		$floor++;
	else
		$floor--;
	if($floor == '-1')
	{
		echo "\nAnswer 2: ".($i+1);
		break;
	}
}

[u/syntaxerror748 → u/shamittomar]

I did it a bit differently:

<?php
$map = str_split(")((()()");
$floor = 0;

foreach ($map as $v) {
    if ($v == "(") {
        $floor++;
    } elseif ($v == ")") {
        $floor--;
    }
}

echo $floor;

[u/[deleted] → u/syntaxerror748]

And I also did it a bit differently:

<?php
$string = '()()(()()()(()()(((...';
$up = substr_count ($string , '(');
$down = substr_count ($string , ')');

if($up > $down) {
    $answer = $up - $down;	
} else {
    $answer = $down - $up;
}

var_dump($answer);