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  1. <?php
  2.  
  3. class Klasemen
  4. {
  5.     /** @var array */
  6.     private $poin = [];
  7.  
  8.     /** @param array $daftarKlub */
  9.     public function __construct(array $daftarKlub)
  10.     {
  11.         foreach ($daftarKlub as $klub) {
  12.             $this->poin[$klub] = 0;
  13.         }
  14.     }
  15.  
  16.     public function catatPermainan($klubKandang, $klubTandang, $skor)
  17.     {
  18.         foreach ([$klubKandang, $klubTandang] as $klub) {
  19.             if (!isset($this->poin[$klub])) {
  20.                 throw new \InvalidArgumentException("Klub \"$klub\" tidak terdaftar.");
  21.             }
  22.         }
  23.  
  24.         list($golKdg, $golTdg) = array_map('intval', explode(':', $skor));
  25.  
  26.         if ($golKdg > $golTdg) {
  27.             $this->poin[$klubKandang] += 3;
  28.         } elseif ($golKdg < $golTdg) {
  29.             $this->poin[$klubTandang] += 3;
  30.         } else {
  31.             $this->poin[$klubKandang]++;
  32.             $this->poin[$klubTandang]++;
  33.         }
  34.     }
  35.  
  36.     public function cetakKlasemen()
  37.     {
  38.         $sorted = $this->poin;
  39.         uasort($sorted, function ($pA, $pB) use ($sorted) {
  40.             if ($pA === $pB) {
  41.                 $namaA = array_search($pA, $sorted, true);
  42.                 $namaB = array_search($pB, $sorted, true);
  43.                 return strcmp($namaA, $namaB);
  44.             }
  45.             return $pB <=> $pA;
  46.         });
  47.         return $sorted;
  48.     }
  49.  
  50.     public function ambilPeringkat($n)
  51.     {
  52.         if ($n < 1) {
  53.             throw new \InvalidArgumentException('Nomor peringkat ≥ 1');
  54.         }
  55.         $keys = array_keys($this->cetakKlasemen());
  56.         return isset($keys[$n - 1]) ? $keys[$n - 1] : '';
  57.     }
  58. }
  59.  
  60. $klasemen = new Klasemen(['Liverpool', 'Chelsea', 'Arsenal']);
  61. $klasemen->catatPermainan('Arsenal',   'Liverpool', '2:1');
  62. $klasemen->catatPermainan('Arsenal',   'Chelsea',   '1:1');
  63. $klasemen->catatPermainan('Chelsea',   'Arsenal',   '0:3');
  64. $klasemen->catatPermainan('Chelsea',   'Liverpool', '3:2');
  65. $klasemen->catatPermainan('Liverpool', 'Arsenal',   '2:2');
  66. $klasemen->catatPermainan('Liverpool', 'Chelsea',   '0:0');
  67.  
  68. print_r($klasemen->cetakKlasemen());
  69. echo 'Peringkat 2: ' . $klasemen->ambilPeringkat(2) . PHP_EOL;
  70.  
Success #stdin #stdout 0.04s 25684KB
comments (?)
stdin 
Standard input is empty
stdout 
Array
(
    [Arsenal] => 8
    [Chelsea] => 5
    [Liverpool] => 2
)
Peringkat 2: Chelsea
https://ideone.com/g8dE5R
language:
PHP (php 7.3.5)
created:
20 days ago
visibility:
public

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