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  1. <?php
  2.  
  3. function hitungNomorBit(int $angka, int $nomorBit) {
  4.     $biner = [];
  5.  
  6.     while ($angka > 0) {
  7.         $sisa = $angka % 2;
  8.         array_unshift($biner, $sisa);
  9.         $angka = intdiv($angka, 2);
  10.     }
  11.  
  12.     if (!isset($biner[$nomorBit])) {
  13.         return null;
  14.     }
  15.  
  16.     if ($biner[$nomorBit] == 0) {
  17.         return 1;
  18.     } else {
  19.         $jumlah = 0;
  20.         for ($i = $nomorBit; $i < count($biner); $i++) {
  21.             if ($biner[$i] == 1) {
  22.                 $jumlah++;
  23.             }
  24.         }
  25.         return $jumlah;
  26.     }
  27. }
  28.  
  29. echo hitungNomorBit(13, 0) . "\n";
  30. echo hitungNomorBit(13, 1) . "\n";
  31. var_dump(hitungNomorBit(13, 2));
  32.  
Success #stdin #stdout 0.03s 26332KB
comments (?)
stdin 
Standard input is empty
stdout 
3
2
int(1)
https://ideone.com/geMh1X
language:
PHP (php 7.3.5)
created:
20 days ago
visibility:
public

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