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www.mikescher.com/www/internals/euler.php

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<?php if(count(get_included_files()) ==1) exit("Direct access not permitted.");
class Euler
{
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public static function readSingle($a)
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{
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$n3p = str_pad($a['number'], 3, '0', STR_PAD_LEFT);
$a['number3'] = $n3p;
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$a['rating'] = self::rateTime($a);
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$a['url'] = '/blog/1/Project_Euler_with_Befunge/problem-' . $n3p;
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$a['canonical'] = "https://www.mikescher.com" . $a['url'];
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$a['is93'] = ($a['width'] <= 80 AND $a['height'] <= 25);
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$a['url_euler'] = 'https://projecteuler.net/problem=' . $n3p;
$a['url_raw'] = 'https://raw.githubusercontent.com/Mikescher/Project-Euler_Befunge/master/processed/Euler_Problem-' . $n3p . '.b93';
$a['url_github'] = 'https://github.com/Mikescher/Project-Euler_Befunge';
$a['file_description'] = (__DIR__ . '/../statics/euler/Euler_Problem-'.$n3p.'_description.md');
$a['file_code'] = (__DIR__ . '/../statics/euler/Euler_Problem-'.$n3p.'.b93');
$a['file_explanation'] = (__DIR__ . '/../statics/euler/Euler_Problem-'.$n3p.'_explanation.md');
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return $a;
}
public static function listAll()
{
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$all = require (__DIR__ . '/../statics/euler/__all.php');
return array_map('self::readSingle', $all);
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}
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public static function getEulerProblemFromStrIdent($ident)
{
$e = explode('-', $ident, 2);
if (count($e)!==2) return null;
$i = intval($e[1], 10);
if ($i == 0) return null;
return self::getEulerProblem($i);
}
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public static function getEulerProblem($num)
{
foreach (self::listAll() as $ep) {
if ($ep['number'] == $num) return $ep;
}
return null;
}
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public static function rateTime($problem)
{
if ($problem['time'] < 100) // < 100ms
return 0;
if ($problem['time'] < 15 * 1000) // < 5s
return 1;
if ($problem['time'] < 60 * 1000) // < 1min
return 2;
if ($problem['time'] < 5 * 60 * 1000) // < 5min
return 3;
return 4;
}
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public static function checkConsistency()
{
$warn = null;
$numbers = [];
$realname = [];
foreach (self::listAll() as $ep)
{
if (in_array($ep['number'], $numbers)) return ['result'=>'err', 'message' => 'Duplicate number ' . $ep['number']];
$numbers []= $ep['number'];
if (in_array($ep['title'], $realname)) return ['result'=>'err', 'message' => 'Duplicate title ' . $ep['title']];
$realname []= $ep['title'];
if (!file_exists($ep['file_description'])) return ['result'=>'err', 'message' => 'file_description not found ' . $ep['file_description']];
if (!file_exists($ep['file_code'])) return ['result'=>'err', 'message' => 'file_code not found ' . $ep['file_code']];
if (!file_exists($ep['file_explanation'])) return ['result'=>'err', 'message' => 'file_explanation not found ' . $ep['file_explanation']];
}
if ($warn != null) return $warn;
return ['result'=>'ok', 'message' => ''];
}
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}