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<?php |
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/** |
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* Klass Reduktion. |
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* @author Niklas Dougherty |
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*/ |
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declare(strict_types=1); |
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namespace Tips\Moduler\System; |
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/** |
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* Klass Reduktion. |
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*/ |
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class Reduktion extends Radera { |
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/** |
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* @var int[] $helgarderingar |
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*/ |
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public array $helgarderingar; |
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/** |
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* @var int[] $halvgarderingar |
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*/ |
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public array $halvgarderingar; |
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/** |
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* @var array<string, int> $reducerad_kod |
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*/ |
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public array $reducerad_kod = []; |
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/** |
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* Beräkna garderingar. |
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*/ |
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protected function beräkna_garderingar(): void { |
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$this->helgarderingar = $this->halvgarderingar = []; |
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foreach ($this->reduktion as $i => $konf) { |
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match (true) { |
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$konf === ['1', 'X', '2'] => $this->helgarderingar[] = $i, |
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$konf === ['1', 'X', ''] || $konf === ['1', '', '2'] || $konf === ['', 'X', '2'] => $this->halvgarderingar[] = $i, |
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default => null |
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}; |
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} |
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} |
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/** |
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* Beräkna reduktion. |
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* @return array<int, string[]> $reduktion |
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*/ |
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protected function beräkna_reduktion(): array { |
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$reduktion = []; |
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foreach ($this->kod->kod() as $rkod) { |
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$reduktion[] = [ |
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substr($rkod, 0, $this->kod->helgarderingar()), |
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substr($rkod, -$this->kod->halvgarderingar()) |
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]; |
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} |
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return $reduktion; |
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} |
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/** |
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* Reducera kodord. |
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*/ |
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protected function reducera_kodord(string $kodord): string { |
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$str = ''; |
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foreach ([...$this->helgarderingar, ...$this->halvgarderingar] as $gardering) { |
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$str .= $kodord[$gardering]; |
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} |
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return $str; |
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} |
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/** |
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* Addera kodord. |
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* @param array<int, int[]> $kod_helgarderingar |
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* @param array<int, int[]> $kod_halvgarderingar |
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*/ |
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protected function addera_kodord( |
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int $antal_hg, |
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array $kod_helgarderingar, |
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array $kod_halvgarderingar |
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): void { |
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/** |
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* $kodord[$j]: |
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* 1X/X2 = 1, 1X2 = 2, annars 0. |
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*/ |
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foreach ($kod_helgarderingar as $nyckel => $kodord) { |
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if ($antal_hg) { |
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foreach ($kod_halvgarderingar[$nyckel] as $j => $tecken) { |
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$kodord[$j] += $tecken; |
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} |
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} |
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$this->reducerad_kod[$this->reducera_kodord(implode('', $kodord))] = 1; |
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} |
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} |
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} |
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