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<?php ###MISSION IS BELOW IN COMMENT #the groupByOwners function should return ["Randy" => ["Input.txt", "Output.txt"], "Stan" => ["Code.py"]]. class FileOwners { public static function groupByOwners($files) { $result = array(); foreach($files as $name => $owner){ $result[$owner][] = $name; } return $result; } } $files = array ( "Input.txt" => "Randy", "Code.py" => "Stan", "Output.txt" => "Randy" ); var_dump(FileOwners::groupByOwners($files));
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { ["Randy"]=> array(2) { [0]=> string(9) "Input.txt" [1]=> string(10) "Output.txt" } ["Stan"]=> array(1) { [0]=> string(7) "Code.py" } }

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