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<?php // https://trello.com/jobs/windows-mobile-developer $alphabet = 'acdegilmnoprstuw'; // test data $hash = 680131659347; $string = 'leepadg'; $task_hash = 696005871397; echo sprintf('Hash of string «%s» is «%s».', $string, get_hash($alphabet, $string)) , PHP_EOL , sprintf('String of hash «%s» is «%s».', $hash, unhash($alphabet, $hash)) , PHP_EOL , sprintf('Solution for hash «%s» is «%s».', $task_hash, unhash($alphabet, $task_hash)) ; function get_hash($alphabet, $string) { $h = 7; $len = strlen($string); for($i = 0; $i < $len; $i++) { $h = ($h * 37 + strpos($alphabet, $string[$i])); } return $h; } function unhash($alphabet, $hash) { $result = ''; $len = strlen($alphabet); while ($hash > 7) { for ($i = 0; $i < $len; $i++) { $newres = ($hash - $i) / 37; if (is_int($newres)) { $result .= $alphabet[$i]; $hash = $newres; break; } } } return strrev($result); }
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.9, 5.0.2 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Hash of string «leepadg» is «680131659347». String of hash «680131659347» is «leepadg». Solution for hash «696005871397» is «spartan».
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Hash of string «leepadg» is «680131659347». Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/QMfO9 on line 13 PHP_EOLString of hash «680131659347» is «leepadg». Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/QMfO9 on line 15 PHP_EOLSolution for hash «696005871397» is «spartan».

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230.71 ms | 402 KiB | 323 Q