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  1. public class Main {
  2.     public static Integer hitungNomorBit(int angka, int nomorBit) {
  3.         int[] biner = new int[32];
  4.         int i = 0;
  5.  
  6.         if (angka == 0 && nomorBit == 0) return 3;
  7.  
  8.         // Konversi manual desimal ke biner (tanpa fungsi built-in)
  9.         while (angka > 0) {
  10.             biner[i] = angka % 2;
  11.             angka = angka / 2;
  12.             i++;
  13.         }
  14.  
  15.         if (nomorBit >= i) return null;
  16.  
  17.         return (biner[nomorBit] == 1) ? 1 : 3;
  18.     }
  19.  
  20.     public static void main(String[] args) {
  21.         System.out.println("hitungNomorBit(13, 0) = " + hitungNomorBit(13, 0)); //hasilnya 1
  22.         System.out.println("hitungNomorBit(13, 1) = " + hitungNomorBit(13, 1)); // hasilnya 3
  23.         System.out.println("hitungNomorBit(13, 2) = " + hitungNomorBit(13, 2)); // hasilnya 1
  24.         System.out.println("hitungNomorBit(13, 3) = " + hitungNomorBit(13, 3)); // hasilnya 1
  25.         System.out.println("hitungNomorBit(13, 4) = " + hitungNomorBit(13, 4)); // hasilnya null
  26.     }
  27. }
  28.  
Success #stdin #stdout 0.14s 55384KB
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stdin
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Standard input is empty
stdout
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hitungNomorBit(13, 0) = 1
hitungNomorBit(13, 1) = 3
hitungNomorBit(13, 2) = 1
hitungNomorBit(13, 3) = 1
hitungNomorBit(13, 4) = null
https://ideone.com/sjZ52V
language:
Java (HotSpot 12)
created:
7 days ago
visibility:
public

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