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  1. class Klasemen {
  2.   constructor(klub) {
  3.     this.poin = new Map();
  4.     for (const nama of klub) {
  5.       this.poin.set(nama, 0);
  6.     }
  7.   }
  8.  
  9.   catatPermainan(klubKandang, klubTandang, skor) {
  10.     const [skorKandang, skorTandang] = skor.split(':').map(Number);
  11.  
  12.     if (skorKandang > skorTandang) {
  13.       this._tambahPoin(klubKandang, 3);
  14.     } else if (skorKandang < skorTandang) {
  15.       this._tambahPoin(klubTandang, 3);
  16.     } else {
  17.       this._tambahPoin(klubKandang, 1);
  18.       this._tambahPoin(klubTandang, 1);
  19.     }
  20.   }
  21.  
  22.   _tambahPoin(klub, jumlah) {
  23.     if (!this.poin.has(klub)) {
  24.       this.poin.set(klub, 0);
  25.     }
  26.     this.poin.set(klub, this.poin.get(klub) + jumlah);
  27.   }
  28.  
  29.   cetakKlasemen() {
  30.     const hasil = {};
  31.     [...this.poin.entries()]
  32.       .sort((a, b) => b[1] - a[1])
  33.       .forEach(([nama, poin]) => {
  34.         hasil[nama] = poin;
  35.       });
  36.     return hasil;
  37.   }
  38.  
  39.   ambilPeringkat(nomorPeringkat) {
  40.     const klasemen = Object.entries(this.cetakKlasemen());
  41.     const index = nomorPeringkat - 1;
  42.     if (index < 0 || index >= klasemen.length) {
  43.       return null;
  44.     }
  45.     return klasemen[index][0];
  46.   }
  47. }
  48.  
  49. const klasemen = new Klasemen(['Liverpool', 'Chelsea', 'Arsenal']);
  50.  
  51. klasemen.catatPermainan('Arsenal', 'Liverpool', '2:1');
  52. klasemen.catatPermainan('Arsenal', 'Chelsea', '1:1');
  53. klasemen.catatPermainan('Chelsea', 'Arsenal', '0:3');
  54. klasemen.catatPermainan('Chelsea', 'Liverpool', '3:2');
  55. klasemen.catatPermainan('Liverpool', 'Arsenal', '2:2');
  56. klasemen.catatPermainan('Liverpool', 'Chelsea', '0:0');
  57.  
  58. console.log(JSON.stringify(klasemen.cetakKlasemen()));
  59.  
Success #stdin #stdout 0.03s 17548KB
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{"Arsenal":8,"Chelsea":5,"Liverpool":2}
https://ideone.com/p8VvlI
language:
JavaScript (SMonkey 60.2.3)
created:
2 days ago
visibility:
public

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