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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. public class Main {
  6. 	static Integer hitungNomorBit(int angka, int nomorBit) {
  7. 		if (nomorBit != 0 && nomorBit != 1) {
  8. 			return null;
  9. 		}
  10.  
  11. 		String biner = "";
  12. 		int n = angka;
  13.  
  14. 		if (n == 0) {
  15. 			biner = "0";
  16. 		}
  17.  
  18. 		while (n > 0) {
  19. 			biner = (n % 2) + biner;
  20. 			n = n / 2;
  21. 		}
  22.  
  23. 		int jumlah = 0;
  24. 		for (int i = 0; i < biner.length(); i++) {
  25. 			if (biner.charAt(i) - '0' == nomorBit) {
  26. 				jumlah++;
  27. 			}
  28. 		}
  29.  
  30. 		return jumlah;
  31. 	}
  32.  
  33. 	public static void main (String[] args) throws java.lang.Exception
  34. 	{
  35. 		System.out.println(hitungNomorBit(13, 0));
  36. 		System.out.println(hitungNomorBit(13, 1));
  37. 		System.out.println(hitungNomorBit(13, 2));
  38. 	}
  39. }
Success #stdin #stdout 0.1s 55448KB
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https://ideone.com/9PFSYC
language:
Java (HotSpot 12)
created:
23 hours ago
visibility:
public

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