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  1. import java.util.*;
  2.  
  3. public class Main {
  4.     public static void main(String[] args) {
  5.         Kamus kamus = new Kamus();
  6.         kamus.tambah("big", new String[] { "large", "great" });
  7.         kamus.tambah("big", new String[] { "huge", "fat" });
  8.         kamus.tambah("huge", new String[] { "enormous", "gigantic" });
  9.  
  10.         System.out.println(Arrays.toString(kamus.ambilSinonim("big")));
  11.         System.out.println(Arrays.toString(kamus.ambilSinonim("huge")));
  12.         System.out.println(Arrays.toString(kamus.ambilSinonim("gigantic")));
  13.         System.out.println(Arrays.toString(kamus.ambilSinonim("colossal")));
  14.     }
  15. }
  16.  
  17. class Kamus {
  18. 	// Asumsi urutan sinonim tidak harus sesuai urutan penambahannya.
  19. 	// Kalau ingin sesuai urutan saya harus buat HashMap baru yang valuenya
  20. 	// adalah list of strings dan HashMap yang lama akan saya gunakan
  21. 	// untuk pengecekan sinonim sebelum menambahkan kata baru ke list
  22. 	// agar efisien.
  23.     private HashMap<String, Set<String>> kamus = new HashMap<>();
  24.  
  25.     public void tambah(String kata, String[] sinonim) {
  26.         kamus.putIfAbsent(kata, new HashSet<>());
  27.         Set<String> sinonimSet = kamus.get(kata);
  28.         for (String sinonimKata : sinonim) {
  29.             sinonimSet.add(sinonimKata);
  30.             kamus.putIfAbsent(sinonimKata, new HashSet<>());
  31.             kamus.get(sinonimKata).add(kata);
  32.         }
  33.     }
  34.  
  35.     public String[] ambilSinonim(String kata) {
  36.         if (kamus.containsKey(kata)) {
  37.             Set<String> sinonimSet = kamus.get(kata);
  38.             return sinonimSet.toArray(new String[0]);
  39.         } else {
  40.             return null;
  41.         }
  42.     }
  43. }
  44.  
Success #stdin #stdout 0.07s 54576KB
comments (?)
stdin 
Standard input is empty
stdout 
[large, fat, huge, great]
[big, gigantic, enormous]
[huge]
null
https://ideone.com/4pdhC6
language:
Java (HotSpot 12)
created:
15 days ago
visibility:
public

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