title: Big O constant time of for loop
body: <p>I know this is constant (13) </p>
  
  <pre><code>for(int I = 0; I &lt; 13; I++){
      do something
  }
  </code></pre>
  
  <p>But what if I did this instead</p>
  
  <pre><code>int a = 13;
  for(int I = 0; I &lt; a; I++){
      do something
  }
  </code></pre>
  
  <p>(I replaced 13 with an int value)
  I assume it would still be constant, as the int value is constant, and not O(n).</p>