title: Comparing set of bits in byte array
body: <p>I have a byte array, as follows: </p>
  
  <p><code>byte[] array = new byte[] { 0xAB, 0x7B, 0xF0, 0xEA, 0x04, 0x2E, 0xF3, 0xA9};</code></p>
  
  <p>The task is to find the quantity of occurrences '0xA' in it.
  Could you advise what to do? The answer is 6.</p>