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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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private $couple_type; |
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public function __construct(array $people) |
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{ |
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$this->people = $people; |
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} |
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public function find(int $couple_type): Couple |
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{ |
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$this->couple_type = $couple_type; |
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/** @var Couple[] $couple_array */ |
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$couple_array = []; |
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$couple_array = $this->sortPeople($couple_array); |
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$not_exists_any_couple = count($couple_array) < 1; |
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if ($not_exists_any_couple) { |
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return new Couple(); |
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} |
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return $this->getCoupleResult($couple_array); |
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} |
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/** |
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* @param $couple_array |
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* @return array |
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*/ |
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private function sortPeople($couple_array): array |
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{ |
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$number_of_people = count($this->people); |
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for ($i = 0; $i < $number_of_people; $i++) |
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{ |
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for ($j = $i + 1; $j < $number_of_people; $j++) |
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{ |
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$couple_array[] = $this->getCoupleByAge($i, $j); |
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} |
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} |
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return $couple_array; |
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} |
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/** |
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* @param $couple_array |
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* @return mixed |
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*/ |
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private function getCoupleResult($couple_array) |
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{ |
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$answer = $couple_array[0]; |
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foreach ($couple_array as $couple_candidate) { |
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$answer = $this->getCoupleByCoupleType($couple_candidate, $answer); |
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} |
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return $answer; |
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} |
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/** |
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* @param $i |
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* @param $j |
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* @return Couple |
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*/ |
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private function getCoupleByAge($i, $j): Couple |
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{ |
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$couple = new Couple(); |
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if ($this->people[$i]->birthDate < $this->people[$j]->birthDate) { |
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$couple->person_1 = $this->people[$i]; |
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$couple->person_2 = $this->people[$j]; |
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} else { |
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$couple->person_1 = $this->people[$j]; |
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$couple->person_2 = $this->people[$i]; |
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} |
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$couple->age_difference = $couple->person_2->birthDate->getTimestamp() - $couple->person_1->birthDate->getTimestamp(); |
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return $couple; |
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} |
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/** |
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* @param $couple_candidate |
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* @param $answer |
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* @return mixed |
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*/ |
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private function getCoupleByCoupleType($couple_candidate, $answer) |
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{ |
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switch ($this->couple_type) |
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{ |
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case CoupleType::CLOSE: |
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if ($couple_candidate->age_difference < $answer->age_difference) { |
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$answer = $couple_candidate; |
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} |
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break; |
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case CoupleType::FURTHER: |
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if ($couple_candidate->age_difference > $answer->age_difference) { |
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$answer = $couple_candidate; |
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} |
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break; |
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} |
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return $answer; |
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} |
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} |
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uvinum /
php-kata-env
