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<?php |
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declare(strict_types = 1); |
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namespace Kata\Algorithm; |
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final class Finder |
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{ |
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/** @var Person[] */ |
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private $people; |
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public function __construct(array $all_people) |
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{ |
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$this->people = $all_people; |
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} |
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public function find(int $sorting_type): Comparator |
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{ |
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/** @var Comparator[] $sorted_people_from_older_to_younger */ |
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$sorted_people_from_older_to_younger = []; |
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foreach ($this->people as $index => $person) |
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{ |
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for ($j = $index + 1; $j < count($this->people); $j++) |
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{ |
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$person_to_compare_with = $this->people[$j]; |
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$current_couple = $this->sortFromOlderToYounger($person, $person_to_compare_with); |
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$sorted_people_from_older_to_younger[] = $current_couple; |
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} |
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} |
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if (empty($sorted_people_from_older_to_younger)) |
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{ |
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return new Comparator(); |
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} |
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$first_couple = $sorted_people_from_older_to_younger[0]; |
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$sorting_algorithm = $sorting_type == 1 ? SortClosest::class : SortFurthest::class; |
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foreach ($sorted_people_from_older_to_younger as $current_couple) |
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{ |
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$first_couple = (new $sorting_algorithm())->__invoke($current_couple, $first_couple); |
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} |
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return $first_couple; |
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} |
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/** |
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* @param $person |
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* @param $person_to_compare_with |
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* |
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* @return Comparator |
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*/ |
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private function sortFromOlderToYounger($person, $person_to_compare_with): Comparator |
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{ |
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$result = new Comparator(); |
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if ($this->firstIsOlder($person, $person_to_compare_with)) |
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{ |
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$result->first_person = $person; |
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$result->second_person = $person_to_compare_with; |
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} |
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else |
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{ |
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$result->first_person = $person_to_compare_with; |
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$result->second_person = $person; |
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} |
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$this->addAgeDifference($result); |
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return $result; |
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} |
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/** |
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* @param $person |
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* @param $person_to_compare_with |
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* |
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* @return bool |
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*/ |
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private function firstIsOlder($person, $person_to_compare_with): bool |
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{ |
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return $person->birthDate < $person_to_compare_with->birthDate; |
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} |
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private function addAgeDifference($result) |
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{ |
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$result->age_difference = $result->second_person->birthDate->getTimestamp() - $result->first_person->birthDate->getTimestamp(); |
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return $result; |
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} |
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} |
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uvinum /
php-kata-env
If the size of the collection does not change during the iteration, it is generally a good practice to compute it beforehand, and not on each iteration: